OpenShot Library | libopenshot 0.3.3
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FFmpegReader.cpp
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1
12// Copyright (c) 2008-2024 OpenShot Studios, LLC, Fabrice Bellard
13//
14// SPDX-License-Identifier: LGPL-3.0-or-later
15
16#include <thread> // for std::this_thread::sleep_for
17#include <chrono> // for std::chrono::milliseconds
18#include <unistd.h>
19
20#include "FFmpegUtilities.h"
21
22#include "FFmpegReader.h"
23#include "Exceptions.h"
24#include "Timeline.h"
25#include "ZmqLogger.h"
26
27#define ENABLE_VAAPI 0
28
29#if USE_HW_ACCEL
30#define MAX_SUPPORTED_WIDTH 1950
31#define MAX_SUPPORTED_HEIGHT 1100
32
33#if ENABLE_VAAPI
34#include "libavutil/hwcontext_vaapi.h"
35
36typedef struct VAAPIDecodeContext {
37 VAProfile va_profile;
38 VAEntrypoint va_entrypoint;
39 VAConfigID va_config;
40 VAContextID va_context;
41
42#if FF_API_STRUCT_VAAPI_CONTEXT
43 // FF_DISABLE_DEPRECATION_WARNINGS
44 int have_old_context;
45 struct vaapi_context *old_context;
46 AVBufferRef *device_ref;
47 // FF_ENABLE_DEPRECATION_WARNINGS
48#endif
49
50 AVHWDeviceContext *device;
51 AVVAAPIDeviceContext *hwctx;
52
53 AVHWFramesContext *frames;
54 AVVAAPIFramesContext *hwfc;
55
56 enum AVPixelFormat surface_format;
57 int surface_count;
58 } VAAPIDecodeContext;
59#endif // ENABLE_VAAPI
60#endif // USE_HW_ACCEL
61
62
63using namespace openshot;
64
65int hw_de_on = 0;
66#if USE_HW_ACCEL
67 AVPixelFormat hw_de_av_pix_fmt_global = AV_PIX_FMT_NONE;
68 AVHWDeviceType hw_de_av_device_type_global = AV_HWDEVICE_TYPE_NONE;
69#endif
70
71FFmpegReader::FFmpegReader(const std::string &path, bool inspect_reader)
72 : last_frame(0), is_seeking(0), seeking_pts(0), seeking_frame(0), seek_count(0), NO_PTS_OFFSET(-99999),
73 path(path), is_video_seek(true), check_interlace(false), check_fps(false), enable_seek(true), is_open(false),
74 seek_audio_frame_found(0), seek_video_frame_found(0),is_duration_known(false), largest_frame_processed(0),
75 current_video_frame(0), packet(NULL), max_concurrent_frames(OPEN_MP_NUM_PROCESSORS), audio_pts(0),
76 video_pts(0), pFormatCtx(NULL), videoStream(-1), audioStream(-1), pCodecCtx(NULL), aCodecCtx(NULL),
77 pStream(NULL), aStream(NULL), pFrame(NULL), previous_packet_location{-1,0},
78 hold_packet(false) {
79
80 // Initialize FFMpeg, and register all formats and codecs
83
84 // Init timestamp offsets
85 pts_offset_seconds = NO_PTS_OFFSET;
86 video_pts_seconds = NO_PTS_OFFSET;
87 audio_pts_seconds = NO_PTS_OFFSET;
88
89 // Init cache
90 working_cache.SetMaxBytesFromInfo(max_concurrent_frames * info.fps.ToDouble() * 2, info.width, info.height, info.sample_rate, info.channels);
92
93 // Open and Close the reader, to populate its attributes (such as height, width, etc...)
94 if (inspect_reader) {
95 Open();
96 Close();
97 }
98}
99
101 if (is_open)
102 // Auto close reader if not already done
103 Close();
104}
105
106// This struct holds the associated video frame and starting sample # for an audio packet.
107bool AudioLocation::is_near(AudioLocation location, int samples_per_frame, int64_t amount) {
108 // Is frame even close to this one?
109 if (abs(location.frame - frame) >= 2)
110 // This is too far away to be considered
111 return false;
112
113 // Note that samples_per_frame can vary slightly frame to frame when the
114 // audio sampling rate is not an integer multiple of the video fps.
115 int64_t diff = samples_per_frame * (location.frame - frame) + location.sample_start - sample_start;
116 if (abs(diff) <= amount)
117 // close
118 return true;
119
120 // not close
121 return false;
122}
123
124#if USE_HW_ACCEL
125
126// Get hardware pix format
127static enum AVPixelFormat get_hw_dec_format(AVCodecContext *ctx, const enum AVPixelFormat *pix_fmts)
128{
129 const enum AVPixelFormat *p;
130
131 for (p = pix_fmts; *p != AV_PIX_FMT_NONE; p++) {
132 switch (*p) {
133#if defined(__linux__)
134 // Linux pix formats
135 case AV_PIX_FMT_VAAPI:
136 hw_de_av_pix_fmt_global = AV_PIX_FMT_VAAPI;
137 hw_de_av_device_type_global = AV_HWDEVICE_TYPE_VAAPI;
138 return *p;
139 break;
140 case AV_PIX_FMT_VDPAU:
141 hw_de_av_pix_fmt_global = AV_PIX_FMT_VDPAU;
142 hw_de_av_device_type_global = AV_HWDEVICE_TYPE_VDPAU;
143 return *p;
144 break;
145#endif
146#if defined(_WIN32)
147 // Windows pix formats
148 case AV_PIX_FMT_DXVA2_VLD:
149 hw_de_av_pix_fmt_global = AV_PIX_FMT_DXVA2_VLD;
150 hw_de_av_device_type_global = AV_HWDEVICE_TYPE_DXVA2;
151 return *p;
152 break;
153 case AV_PIX_FMT_D3D11:
154 hw_de_av_pix_fmt_global = AV_PIX_FMT_D3D11;
155 hw_de_av_device_type_global = AV_HWDEVICE_TYPE_D3D11VA;
156 return *p;
157 break;
158#endif
159#if defined(__APPLE__)
160 // Apple pix formats
161 case AV_PIX_FMT_VIDEOTOOLBOX:
162 hw_de_av_pix_fmt_global = AV_PIX_FMT_VIDEOTOOLBOX;
163 hw_de_av_device_type_global = AV_HWDEVICE_TYPE_VIDEOTOOLBOX;
164 return *p;
165 break;
166#endif
167 // Cross-platform pix formats
168 case AV_PIX_FMT_CUDA:
169 hw_de_av_pix_fmt_global = AV_PIX_FMT_CUDA;
170 hw_de_av_device_type_global = AV_HWDEVICE_TYPE_CUDA;
171 return *p;
172 break;
173 case AV_PIX_FMT_QSV:
174 hw_de_av_pix_fmt_global = AV_PIX_FMT_QSV;
175 hw_de_av_device_type_global = AV_HWDEVICE_TYPE_QSV;
176 return *p;
177 break;
178 default:
179 // This is only here to silence unused-enum warnings
180 break;
181 }
182 }
183 ZmqLogger::Instance()->AppendDebugMethod("FFmpegReader::get_hw_dec_format (Unable to decode this file using hardware decode)");
184 return AV_PIX_FMT_NONE;
185}
186
187int FFmpegReader::IsHardwareDecodeSupported(int codecid)
188{
189 int ret;
190 switch (codecid) {
191 case AV_CODEC_ID_H264:
192 case AV_CODEC_ID_MPEG2VIDEO:
193 case AV_CODEC_ID_VC1:
194 case AV_CODEC_ID_WMV1:
195 case AV_CODEC_ID_WMV2:
196 case AV_CODEC_ID_WMV3:
197 ret = 1;
198 break;
199 default :
200 ret = 0;
201 break;
202 }
203 return ret;
204}
205#endif // USE_HW_ACCEL
206
208 // Open reader if not already open
209 if (!is_open) {
210 // Prevent async calls to the following code
211 const std::lock_guard<std::recursive_mutex> lock(getFrameMutex);
212
213 // Initialize format context
214 pFormatCtx = NULL;
215 {
217 ZmqLogger::Instance()->AppendDebugMethod("Decode hardware acceleration settings", "hw_de_on", hw_de_on, "HARDWARE_DECODER", openshot::Settings::Instance()->HARDWARE_DECODER);
218 }
219
220 // Open video file
221 if (avformat_open_input(&pFormatCtx, path.c_str(), NULL, NULL) != 0)
222 throw InvalidFile("File could not be opened.", path);
223
224 // Retrieve stream information
225 if (avformat_find_stream_info(pFormatCtx, NULL) < 0)
226 throw NoStreamsFound("No streams found in file.", path);
227
228 videoStream = -1;
229 audioStream = -1;
230
231 // Init end-of-file detection variables
232 packet_status.reset(true);
233
234 // Loop through each stream, and identify the video and audio stream index
235 for (unsigned int i = 0; i < pFormatCtx->nb_streams; i++) {
236 // Is this a video stream?
237 if (AV_GET_CODEC_TYPE(pFormatCtx->streams[i]) == AVMEDIA_TYPE_VIDEO && videoStream < 0) {
238 videoStream = i;
239 packet_status.video_eof = false;
240 packet_status.packets_eof = false;
241 packet_status.end_of_file = false;
242 }
243 // Is this an audio stream?
244 if (AV_GET_CODEC_TYPE(pFormatCtx->streams[i]) == AVMEDIA_TYPE_AUDIO && audioStream < 0) {
245 audioStream = i;
246 packet_status.audio_eof = false;
247 packet_status.packets_eof = false;
248 packet_status.end_of_file = false;
249 }
250 }
251 if (videoStream == -1 && audioStream == -1)
252 throw NoStreamsFound("No video or audio streams found in this file.", path);
253
254 // Is there a video stream?
255 if (videoStream != -1) {
256 // Set the stream index
257 info.video_stream_index = videoStream;
258
259 // Set the codec and codec context pointers
260 pStream = pFormatCtx->streams[videoStream];
261
262 // Find the codec ID from stream
263 const AVCodecID codecId = AV_FIND_DECODER_CODEC_ID(pStream);
264
265 // Get codec and codec context from stream
266 const AVCodec *pCodec = avcodec_find_decoder(codecId);
267 AVDictionary *opts = NULL;
268 int retry_decode_open = 2;
269 // If hw accel is selected but hardware cannot handle repeat with software decoding
270 do {
271 pCodecCtx = AV_GET_CODEC_CONTEXT(pStream, pCodec);
272#if USE_HW_ACCEL
273 if (hw_de_on && (retry_decode_open==2)) {
274 // Up to here no decision is made if hardware or software decode
275 hw_de_supported = IsHardwareDecodeSupported(pCodecCtx->codec_id);
276 }
277#endif
278 retry_decode_open = 0;
279
280 // Set number of threads equal to number of processors (not to exceed 16)
281 pCodecCtx->thread_count = std::min(FF_NUM_PROCESSORS, 16);
282
283 if (pCodec == NULL) {
284 throw InvalidCodec("A valid video codec could not be found for this file.", path);
285 }
286
287 // Init options
288 av_dict_set(&opts, "strict", "experimental", 0);
289#if USE_HW_ACCEL
290 if (hw_de_on && hw_de_supported) {
291 // Open Hardware Acceleration
292 int i_decoder_hw = 0;
293 char adapter[256];
294 char *adapter_ptr = NULL;
295 int adapter_num;
297 fprintf(stderr, "Hardware decoding device number: %d\n", adapter_num);
298
299 // Set hardware pix format (callback)
300 pCodecCtx->get_format = get_hw_dec_format;
301
302 if (adapter_num < 3 && adapter_num >=0) {
303#if defined(__linux__)
304 snprintf(adapter,sizeof(adapter),"/dev/dri/renderD%d", adapter_num+128);
305 adapter_ptr = adapter;
307 switch (i_decoder_hw) {
308 case 1:
309 hw_de_av_device_type = AV_HWDEVICE_TYPE_VAAPI;
310 break;
311 case 2:
312 hw_de_av_device_type = AV_HWDEVICE_TYPE_CUDA;
313 break;
314 case 6:
315 hw_de_av_device_type = AV_HWDEVICE_TYPE_VDPAU;
316 break;
317 case 7:
318 hw_de_av_device_type = AV_HWDEVICE_TYPE_QSV;
319 break;
320 default:
321 hw_de_av_device_type = AV_HWDEVICE_TYPE_VAAPI;
322 break;
323 }
324
325#elif defined(_WIN32)
326 adapter_ptr = NULL;
328 switch (i_decoder_hw) {
329 case 2:
330 hw_de_av_device_type = AV_HWDEVICE_TYPE_CUDA;
331 break;
332 case 3:
333 hw_de_av_device_type = AV_HWDEVICE_TYPE_DXVA2;
334 break;
335 case 4:
336 hw_de_av_device_type = AV_HWDEVICE_TYPE_D3D11VA;
337 break;
338 case 7:
339 hw_de_av_device_type = AV_HWDEVICE_TYPE_QSV;
340 break;
341 default:
342 hw_de_av_device_type = AV_HWDEVICE_TYPE_DXVA2;
343 break;
344 }
345#elif defined(__APPLE__)
346 adapter_ptr = NULL;
348 switch (i_decoder_hw) {
349 case 5:
350 hw_de_av_device_type = AV_HWDEVICE_TYPE_VIDEOTOOLBOX;
351 break;
352 case 7:
353 hw_de_av_device_type = AV_HWDEVICE_TYPE_QSV;
354 break;
355 default:
356 hw_de_av_device_type = AV_HWDEVICE_TYPE_VIDEOTOOLBOX;
357 break;
358 }
359#endif
360
361 } else {
362 adapter_ptr = NULL; // Just to be sure
363 }
364
365 // Check if it is there and writable
366#if defined(__linux__)
367 if( adapter_ptr != NULL && access( adapter_ptr, W_OK ) == 0 ) {
368#elif defined(_WIN32)
369 if( adapter_ptr != NULL ) {
370#elif defined(__APPLE__)
371 if( adapter_ptr != NULL ) {
372#endif
373 ZmqLogger::Instance()->AppendDebugMethod("Decode Device present using device");
374 }
375 else {
376 adapter_ptr = NULL; // use default
377 ZmqLogger::Instance()->AppendDebugMethod("Decode Device not present using default");
378 }
379
380 hw_device_ctx = NULL;
381 // Here the first hardware initialisations are made
382 if (av_hwdevice_ctx_create(&hw_device_ctx, hw_de_av_device_type, adapter_ptr, NULL, 0) >= 0) {
383 if (!(pCodecCtx->hw_device_ctx = av_buffer_ref(hw_device_ctx))) {
384 throw InvalidCodec("Hardware device reference create failed.", path);
385 }
386
387 /*
388 av_buffer_unref(&ist->hw_frames_ctx);
389 ist->hw_frames_ctx = av_hwframe_ctx_alloc(hw_device_ctx);
390 if (!ist->hw_frames_ctx) {
391 av_log(avctx, AV_LOG_ERROR, "Error creating a CUDA frames context\n");
392 return AVERROR(ENOMEM);
393 }
394
395 frames_ctx = (AVHWFramesContext*)ist->hw_frames_ctx->data;
396
397 frames_ctx->format = AV_PIX_FMT_CUDA;
398 frames_ctx->sw_format = avctx->sw_pix_fmt;
399 frames_ctx->width = avctx->width;
400 frames_ctx->height = avctx->height;
401
402 av_log(avctx, AV_LOG_DEBUG, "Initializing CUDA frames context: sw_format = %s, width = %d, height = %d\n",
403 av_get_pix_fmt_name(frames_ctx->sw_format), frames_ctx->width, frames_ctx->height);
404
405
406 ret = av_hwframe_ctx_init(pCodecCtx->hw_device_ctx);
407 ret = av_hwframe_ctx_init(ist->hw_frames_ctx);
408 if (ret < 0) {
409 av_log(avctx, AV_LOG_ERROR, "Error initializing a CUDA frame pool\n");
410 return ret;
411 }
412 */
413 }
414 else {
415 throw InvalidCodec("Hardware device create failed.", path);
416 }
417 }
418#endif // USE_HW_ACCEL
419
420 // Disable per-frame threading for album arts
421 // Using FF_THREAD_FRAME adds one frame decoding delay per thread,
422 // but there's only one frame in this case.
423 if (HasAlbumArt())
424 {
425 pCodecCtx->thread_type &= ~FF_THREAD_FRAME;
426 }
427
428 // Open video codec
429 int avcodec_return = avcodec_open2(pCodecCtx, pCodec, &opts);
430 if (avcodec_return < 0) {
431 std::stringstream avcodec_error_msg;
432 avcodec_error_msg << "A video codec was found, but could not be opened. Error: " << av_err2string(avcodec_return);
433 throw InvalidCodec(avcodec_error_msg.str(), path);
434 }
435
436#if USE_HW_ACCEL
437 if (hw_de_on && hw_de_supported) {
438 AVHWFramesConstraints *constraints = NULL;
439 void *hwconfig = NULL;
440 hwconfig = av_hwdevice_hwconfig_alloc(hw_device_ctx);
441
442// TODO: needs va_config!
443#if ENABLE_VAAPI
444 ((AVVAAPIHWConfig *)hwconfig)->config_id = ((VAAPIDecodeContext *)(pCodecCtx->priv_data))->va_config;
445 constraints = av_hwdevice_get_hwframe_constraints(hw_device_ctx,hwconfig);
446#endif // ENABLE_VAAPI
447 if (constraints) {
448 if (pCodecCtx->coded_width < constraints->min_width ||
449 pCodecCtx->coded_height < constraints->min_height ||
450 pCodecCtx->coded_width > constraints->max_width ||
451 pCodecCtx->coded_height > constraints->max_height) {
452 ZmqLogger::Instance()->AppendDebugMethod("DIMENSIONS ARE TOO LARGE for hardware acceleration\n");
453 hw_de_supported = 0;
454 retry_decode_open = 1;
455 AV_FREE_CONTEXT(pCodecCtx);
456 if (hw_device_ctx) {
457 av_buffer_unref(&hw_device_ctx);
458 hw_device_ctx = NULL;
459 }
460 }
461 else {
462 // All is just peachy
463 ZmqLogger::Instance()->AppendDebugMethod("\nDecode hardware acceleration is used\n", "Min width :", constraints->min_width, "Min Height :", constraints->min_height, "MaxWidth :", constraints->max_width, "MaxHeight :", constraints->max_height, "Frame width :", pCodecCtx->coded_width, "Frame height :", pCodecCtx->coded_height);
464 retry_decode_open = 0;
465 }
466 av_hwframe_constraints_free(&constraints);
467 if (hwconfig) {
468 av_freep(&hwconfig);
469 }
470 }
471 else {
472 int max_h, max_w;
473 //max_h = ((getenv( "LIMIT_HEIGHT_MAX" )==NULL) ? MAX_SUPPORTED_HEIGHT : atoi(getenv( "LIMIT_HEIGHT_MAX" )));
475 //max_w = ((getenv( "LIMIT_WIDTH_MAX" )==NULL) ? MAX_SUPPORTED_WIDTH : atoi(getenv( "LIMIT_WIDTH_MAX" )));
477 ZmqLogger::Instance()->AppendDebugMethod("Constraints could not be found using default limit\n");
478 //cerr << "Constraints could not be found using default limit\n";
479 if (pCodecCtx->coded_width < 0 ||
480 pCodecCtx->coded_height < 0 ||
481 pCodecCtx->coded_width > max_w ||
482 pCodecCtx->coded_height > max_h ) {
483 ZmqLogger::Instance()->AppendDebugMethod("DIMENSIONS ARE TOO LARGE for hardware acceleration\n", "Max Width :", max_w, "Max Height :", max_h, "Frame width :", pCodecCtx->coded_width, "Frame height :", pCodecCtx->coded_height);
484 hw_de_supported = 0;
485 retry_decode_open = 1;
486 AV_FREE_CONTEXT(pCodecCtx);
487 if (hw_device_ctx) {
488 av_buffer_unref(&hw_device_ctx);
489 hw_device_ctx = NULL;
490 }
491 }
492 else {
493 ZmqLogger::Instance()->AppendDebugMethod("\nDecode hardware acceleration is used\n", "Max Width :", max_w, "Max Height :", max_h, "Frame width :", pCodecCtx->coded_width, "Frame height :", pCodecCtx->coded_height);
494 retry_decode_open = 0;
495 }
496 }
497 } // if hw_de_on && hw_de_supported
498 else {
499 ZmqLogger::Instance()->AppendDebugMethod("\nDecode in software is used\n");
500 }
501#else
502 retry_decode_open = 0;
503#endif // USE_HW_ACCEL
504 } while (retry_decode_open); // retry_decode_open
505 // Free options
506 av_dict_free(&opts);
507
508 // Update the File Info struct with video details (if a video stream is found)
509 UpdateVideoInfo();
510 }
511
512 // Is there an audio stream?
513 if (audioStream != -1) {
514 // Set the stream index
515 info.audio_stream_index = audioStream;
516
517 // Get a pointer to the codec context for the audio stream
518 aStream = pFormatCtx->streams[audioStream];
519
520 // Find the codec ID from stream
521 AVCodecID codecId = AV_FIND_DECODER_CODEC_ID(aStream);
522
523 // Get codec and codec context from stream
524 const AVCodec *aCodec = avcodec_find_decoder(codecId);
525 aCodecCtx = AV_GET_CODEC_CONTEXT(aStream, aCodec);
526
527 // Set number of threads equal to number of processors (not to exceed 16)
528 aCodecCtx->thread_count = std::min(FF_NUM_PROCESSORS, 16);
529
530 if (aCodec == NULL) {
531 throw InvalidCodec("A valid audio codec could not be found for this file.", path);
532 }
533
534 // Init options
535 AVDictionary *opts = NULL;
536 av_dict_set(&opts, "strict", "experimental", 0);
537
538 // Open audio codec
539 if (avcodec_open2(aCodecCtx, aCodec, &opts) < 0)
540 throw InvalidCodec("An audio codec was found, but could not be opened.", path);
541
542 // Free options
543 av_dict_free(&opts);
544
545 // Update the File Info struct with audio details (if an audio stream is found)
546 UpdateAudioInfo();
547 }
548
549 // Add format metadata (if any)
550 AVDictionaryEntry *tag = NULL;
551 while ((tag = av_dict_get(pFormatCtx->metadata, "", tag, AV_DICT_IGNORE_SUFFIX))) {
552 QString str_key = tag->key;
553 QString str_value = tag->value;
554 info.metadata[str_key.toStdString()] = str_value.trimmed().toStdString();
555 }
556
557 // Init previous audio location to zero
558 previous_packet_location.frame = -1;
559 previous_packet_location.sample_start = 0;
560
561 // Adjust cache size based on size of frame and audio
562 working_cache.SetMaxBytesFromInfo(max_concurrent_frames * info.fps.ToDouble() * 2, info.width, info.height, info.sample_rate, info.channels);
564
565 // Scan PTS for any offsets (i.e. non-zero starting streams). At least 1 stream must start at zero timestamp.
566 // This method allows us to shift timestamps to ensure at least 1 stream is starting at zero.
567 UpdatePTSOffset();
568
569 // Override an invalid framerate
570 if (info.fps.ToFloat() > 240.0f || (info.fps.num <= 0 || info.fps.den <= 0) || info.video_length <= 0) {
571 // Calculate FPS, duration, video bit rate, and video length manually
572 // by scanning through all the video stream packets
573 CheckFPS();
574 }
575
576 // Mark as "open"
577 is_open = true;
578
579 // Seek back to beginning of file (if not already seeking)
580 if (!is_seeking) {
581 Seek(1);
582 }
583 }
584}
585
587 // Close all objects, if reader is 'open'
588 if (is_open) {
589 // Prevent async calls to the following code
590 const std::lock_guard<std::recursive_mutex> lock(getFrameMutex);
591
592 // Mark as "closed"
593 is_open = false;
594
595 // Keep track of most recent packet
596 AVPacket *recent_packet = packet;
597
598 // Drain any packets from the decoder
599 packet = NULL;
600 int attempts = 0;
601 int max_attempts = 128;
602 while (packet_status.packets_decoded() < packet_status.packets_read() && attempts < max_attempts) {
603 ZmqLogger::Instance()->AppendDebugMethod("FFmpegReader::Close (Drain decoder loop)",
604 "packets_read", packet_status.packets_read(),
605 "packets_decoded", packet_status.packets_decoded(),
606 "attempts", attempts);
607 if (packet_status.video_decoded < packet_status.video_read) {
608 ProcessVideoPacket(info.video_length);
609 }
610 if (packet_status.audio_decoded < packet_status.audio_read) {
611 ProcessAudioPacket(info.video_length);
612 }
613 attempts++;
614 }
615
616 // Remove packet
617 if (recent_packet) {
618 RemoveAVPacket(recent_packet);
619 }
620
621 // Close the video codec
622 if (info.has_video) {
623 if(avcodec_is_open(pCodecCtx)) {
624 avcodec_flush_buffers(pCodecCtx);
625 }
626 AV_FREE_CONTEXT(pCodecCtx);
627#if USE_HW_ACCEL
628 if (hw_de_on) {
629 if (hw_device_ctx) {
630 av_buffer_unref(&hw_device_ctx);
631 hw_device_ctx = NULL;
632 }
633 }
634#endif // USE_HW_ACCEL
635 }
636
637 // Close the audio codec
638 if (info.has_audio) {
639 if(avcodec_is_open(aCodecCtx)) {
640 avcodec_flush_buffers(aCodecCtx);
641 }
642 AV_FREE_CONTEXT(aCodecCtx);
643 }
644
645 // Clear final cache
647 working_cache.Clear();
648
649 // Close the video file
650 avformat_close_input(&pFormatCtx);
651 av_freep(&pFormatCtx);
652
653 // Reset some variables
654 last_frame = 0;
655 hold_packet = false;
656 largest_frame_processed = 0;
657 seek_audio_frame_found = 0;
658 seek_video_frame_found = 0;
659 current_video_frame = 0;
660 last_video_frame.reset();
661 }
662}
663
664bool FFmpegReader::HasAlbumArt() {
665 // Check if the video stream we use is an attached picture
666 // This won't return true if the file has a cover image as a secondary stream
667 // like an MKV file with an attached image file
668 return pFormatCtx && videoStream >= 0 && pFormatCtx->streams[videoStream]
669 && (pFormatCtx->streams[videoStream]->disposition & AV_DISPOSITION_ATTACHED_PIC);
670}
671
672void FFmpegReader::UpdateAudioInfo() {
673 // Set default audio channel layout (if needed)
674#if HAVE_CH_LAYOUT
675 if (!av_channel_layout_check(&(AV_GET_CODEC_ATTRIBUTES(aStream, aCodecCtx)->ch_layout)))
676 AV_GET_CODEC_ATTRIBUTES(aStream, aCodecCtx)->ch_layout = (AVChannelLayout) AV_CHANNEL_LAYOUT_STEREO;
677#else
678 if (AV_GET_CODEC_ATTRIBUTES(aStream, aCodecCtx)->channel_layout == 0)
679 AV_GET_CODEC_ATTRIBUTES(aStream, aCodecCtx)->channel_layout = av_get_default_channel_layout(AV_GET_CODEC_ATTRIBUTES(aStream, aCodecCtx)->channels);
680#endif
681
682 if (info.sample_rate > 0) {
683 // Skip init - if info struct already populated
684 return;
685 }
686
687 // Set values of FileInfo struct
688 info.has_audio = true;
689 info.file_size = pFormatCtx->pb ? avio_size(pFormatCtx->pb) : -1;
690 info.acodec = aCodecCtx->codec->name;
691#if HAVE_CH_LAYOUT
692 info.channels = AV_GET_CODEC_ATTRIBUTES(aStream, aCodecCtx)->ch_layout.nb_channels;
693 info.channel_layout = (ChannelLayout) AV_GET_CODEC_ATTRIBUTES(aStream, aCodecCtx)->ch_layout.u.mask;
694#else
695 info.channels = AV_GET_CODEC_ATTRIBUTES(aStream, aCodecCtx)->channels;
696 info.channel_layout = (ChannelLayout) AV_GET_CODEC_ATTRIBUTES(aStream, aCodecCtx)->channel_layout;
697#endif
698 info.sample_rate = AV_GET_CODEC_ATTRIBUTES(aStream, aCodecCtx)->sample_rate;
699 info.audio_bit_rate = AV_GET_CODEC_ATTRIBUTES(aStream, aCodecCtx)->bit_rate;
700 if (info.audio_bit_rate <= 0) {
701 // Get bitrate from format
702 info.audio_bit_rate = pFormatCtx->bit_rate;
703 }
704
705 // Set audio timebase
706 info.audio_timebase.num = aStream->time_base.num;
707 info.audio_timebase.den = aStream->time_base.den;
708
709 // Get timebase of audio stream (if valid) and greater than the current duration
710 if (aStream->duration > 0 && aStream->duration > info.duration) {
711 // Get duration from audio stream
712 info.duration = aStream->duration * info.audio_timebase.ToDouble();
713 } else if (pFormatCtx->duration > 0 && info.duration <= 0.0f) {
714 // Use the format's duration
715 info.duration = float(pFormatCtx->duration) / AV_TIME_BASE;
716 }
717
718 // Calculate duration from filesize and bitrate (if any)
719 if (info.duration <= 0.0f && info.video_bit_rate > 0 && info.file_size > 0) {
720 // Estimate from bitrate, total bytes, and framerate
722 }
723
724 // Check for an invalid video length
725 if (info.has_video && info.video_length <= 0) {
726 // Calculate the video length from the audio duration
728 }
729
730 // Set video timebase (if no video stream was found)
731 if (!info.has_video) {
732 // Set a few important default video settings (so audio can be divided into frames)
733 info.fps.num = 24;
734 info.fps.den = 1;
738 info.width = 720;
739 info.height = 480;
740
741 // Use timeline to set correct width & height (if any)
742 Clip *parent = static_cast<Clip *>(ParentClip());
743 if (parent) {
744 if (parent->ParentTimeline()) {
745 // Set max width/height based on parent clip's timeline (if attached to a timeline)
748 }
749 }
750 }
751
752 // Fix invalid video lengths for certain types of files (MP3 for example)
753 if (info.has_video && ((info.duration * info.fps.ToDouble()) - info.video_length > 60)) {
755 }
756
757 // Add audio metadata (if any found)
758 AVDictionaryEntry *tag = NULL;
759 while ((tag = av_dict_get(aStream->metadata, "", tag, AV_DICT_IGNORE_SUFFIX))) {
760 QString str_key = tag->key;
761 QString str_value = tag->value;
762 info.metadata[str_key.toStdString()] = str_value.trimmed().toStdString();
763 }
764}
765
766void FFmpegReader::UpdateVideoInfo() {
767 if (info.vcodec.length() > 0) {
768 // Skip init - if info struct already populated
769 return;
770 }
771
772 // Set values of FileInfo struct
773 info.has_video = true;
774 info.file_size = pFormatCtx->pb ? avio_size(pFormatCtx->pb) : -1;
775 info.height = AV_GET_CODEC_ATTRIBUTES(pStream, pCodecCtx)->height;
776 info.width = AV_GET_CODEC_ATTRIBUTES(pStream, pCodecCtx)->width;
777 info.vcodec = pCodecCtx->codec->name;
778 info.video_bit_rate = (pFormatCtx->bit_rate / 8);
779
780 // Frame rate from the container and codec
781 AVRational framerate = av_guess_frame_rate(pFormatCtx, pStream, NULL);
782 if (!check_fps) {
783 info.fps.num = framerate.num;
784 info.fps.den = framerate.den;
785 }
786
787 ZmqLogger::Instance()->AppendDebugMethod("FFmpegReader::UpdateVideoInfo", "info.fps.num", info.fps.num, "info.fps.den", info.fps.den);
788
789 // TODO: remove excessive debug info in the next releases
790 // The debug info below is just for comparison and troubleshooting on users side during the transition period
791 ZmqLogger::Instance()->AppendDebugMethod("FFmpegReader::UpdateVideoInfo (pStream->avg_frame_rate)", "num", pStream->avg_frame_rate.num, "den", pStream->avg_frame_rate.den);
792
793 if (pStream->sample_aspect_ratio.num != 0) {
794 info.pixel_ratio.num = pStream->sample_aspect_ratio.num;
795 info.pixel_ratio.den = pStream->sample_aspect_ratio.den;
796 } else if (AV_GET_CODEC_ATTRIBUTES(pStream, pCodecCtx)->sample_aspect_ratio.num != 0) {
797 info.pixel_ratio.num = AV_GET_CODEC_ATTRIBUTES(pStream, pCodecCtx)->sample_aspect_ratio.num;
798 info.pixel_ratio.den = AV_GET_CODEC_ATTRIBUTES(pStream, pCodecCtx)->sample_aspect_ratio.den;
799 } else {
800 info.pixel_ratio.num = 1;
801 info.pixel_ratio.den = 1;
802 }
803 info.pixel_format = AV_GET_CODEC_PIXEL_FORMAT(pStream, pCodecCtx);
804
805 // Calculate the DAR (display aspect ratio)
807
808 // Reduce size fraction
809 size.Reduce();
810
811 // Set the ratio based on the reduced fraction
812 info.display_ratio.num = size.num;
813 info.display_ratio.den = size.den;
814
815 // Get scan type and order from codec context/params
816 if (!check_interlace) {
817 check_interlace = true;
818 AVFieldOrder field_order = AV_GET_CODEC_ATTRIBUTES(pStream, pCodecCtx)->field_order;
819 switch(field_order) {
820 case AV_FIELD_PROGRESSIVE:
821 info.interlaced_frame = false;
822 break;
823 case AV_FIELD_TT:
824 case AV_FIELD_TB:
825 info.interlaced_frame = true;
826 info.top_field_first = true;
827 break;
828 case AV_FIELD_BT:
829 case AV_FIELD_BB:
830 info.interlaced_frame = true;
831 info.top_field_first = false;
832 break;
833 case AV_FIELD_UNKNOWN:
834 // Check again later?
835 check_interlace = false;
836 break;
837 }
838 // check_interlace will prevent these checks being repeated,
839 // unless it was cleared because we got an AV_FIELD_UNKNOWN response.
840 }
841
842 // Set the video timebase
843 info.video_timebase.num = pStream->time_base.num;
844 info.video_timebase.den = pStream->time_base.den;
845
846 // Set the duration in seconds, and video length (# of frames)
847 info.duration = pStream->duration * info.video_timebase.ToDouble();
848
849 // Check for valid duration (if found)
850 if (info.duration <= 0.0f && pFormatCtx->duration >= 0) {
851 // Use the format's duration
852 info.duration = float(pFormatCtx->duration) / AV_TIME_BASE;
853 }
854
855 // Calculate duration from filesize and bitrate (if any)
856 if (info.duration <= 0.0f && info.video_bit_rate > 0 && info.file_size > 0) {
857 // Estimate from bitrate, total bytes, and framerate
859 }
860
861 // Certain "image" formats do not have a valid duration
862 if (info.duration <= 0.0f && pStream->duration == AV_NOPTS_VALUE && pFormatCtx->duration == AV_NOPTS_VALUE) {
863 // Force an "image" duration
864 info.duration = 60 * 60 * 1; // 1 hour duration
865 info.video_length = 1;
866 info.has_single_image = true;
867 }
868
869 // Get the # of video frames (if found in stream)
870 // Only set this 1 time (this method can be called multiple times)
871 if (pStream->nb_frames > 0 && info.video_length <= 0) {
872 info.video_length = pStream->nb_frames;
873 }
874
875 // No duration found in stream of file
876 if (info.duration <= 0.0f) {
877 // No duration is found in the video stream
878 info.duration = -1;
879 info.video_length = -1;
880 is_duration_known = false;
881 } else {
882 // Yes, a duration was found
883 is_duration_known = true;
884
885 // Calculate number of frames (if not already found in metadata)
886 // Only set this 1 time (this method can be called multiple times)
887 if (info.video_length <= 0) {
889 }
890 }
891
892 // Add video metadata (if any)
893 AVDictionaryEntry *tag = NULL;
894 while ((tag = av_dict_get(pStream->metadata, "", tag, AV_DICT_IGNORE_SUFFIX))) {
895 QString str_key = tag->key;
896 QString str_value = tag->value;
897 info.metadata[str_key.toStdString()] = str_value.trimmed().toStdString();
898 }
899}
900
902 return this->is_duration_known;
903}
904
905std::shared_ptr<Frame> FFmpegReader::GetFrame(int64_t requested_frame) {
906 // Check for open reader (or throw exception)
907 if (!is_open)
908 throw ReaderClosed("The FFmpegReader is closed. Call Open() before calling this method.", path);
909
910 // Adjust for a requested frame that is too small or too large
911 if (requested_frame < 1)
912 requested_frame = 1;
913 if (requested_frame > info.video_length && is_duration_known)
914 requested_frame = info.video_length;
915 if (info.has_video && info.video_length == 0)
916 // Invalid duration of video file
917 throw InvalidFile("Could not detect the duration of the video or audio stream.", path);
918
919 // Debug output
920 ZmqLogger::Instance()->AppendDebugMethod("FFmpegReader::GetFrame", "requested_frame", requested_frame, "last_frame", last_frame);
921
922 // Check the cache for this frame
923 std::shared_ptr<Frame> frame = final_cache.GetFrame(requested_frame);
924 if (frame) {
925 // Debug output
926 ZmqLogger::Instance()->AppendDebugMethod("FFmpegReader::GetFrame", "returned cached frame", requested_frame);
927
928 // Return the cached frame
929 return frame;
930 } else {
931
932 // Prevent async calls to the remainder of this code
933 const std::lock_guard<std::recursive_mutex> lock(getFrameMutex);
934
935 // Check the cache a 2nd time (due to the potential previous lock)
936 frame = final_cache.GetFrame(requested_frame);
937 if (frame) {
938 // Debug output
939 ZmqLogger::Instance()->AppendDebugMethod("FFmpegReader::GetFrame", "returned cached frame on 2nd look", requested_frame);
940
941 } else {
942 // Frame is not in cache
943 // Reset seek count
944 seek_count = 0;
945
946 // Are we within X frames of the requested frame?
947 int64_t diff = requested_frame - last_frame;
948 if (diff >= 1 && diff <= 20) {
949 // Continue walking the stream
950 frame = ReadStream(requested_frame);
951 } else {
952 // Greater than 30 frames away, or backwards, we need to seek to the nearest key frame
953 if (enable_seek) {
954 // Only seek if enabled
955 Seek(requested_frame);
956
957 } else if (!enable_seek && diff < 0) {
958 // Start over, since we can't seek, and the requested frame is smaller than our position
959 // Since we are seeking to frame 1, this actually just closes/re-opens the reader
960 Seek(1);
961 }
962
963 // Then continue walking the stream
964 frame = ReadStream(requested_frame);
965 }
966 }
967 return frame;
968 }
969}
970
971// Read the stream until we find the requested Frame
972std::shared_ptr<Frame> FFmpegReader::ReadStream(int64_t requested_frame) {
973 // Allocate video frame
974 bool check_seek = false;
975 int packet_error = -1;
976
977 // Debug output
978 ZmqLogger::Instance()->AppendDebugMethod("FFmpegReader::ReadStream", "requested_frame", requested_frame, "max_concurrent_frames", max_concurrent_frames);
979
980 // Loop through the stream until the correct frame is found
981 while (true) {
982 // Check if working frames are 'finished'
983 if (!is_seeking) {
984 // Check for final frames
985 CheckWorkingFrames(requested_frame);
986 }
987
988 // Check if requested 'final' frame is available (and break out of loop if found)
989 bool is_cache_found = (final_cache.GetFrame(requested_frame) != NULL);
990 if (is_cache_found) {
991 break;
992 }
993
994 if (!hold_packet || !packet) {
995 // Get the next packet
996 packet_error = GetNextPacket();
997 if (packet_error < 0 && !packet) {
998 // No more packets to be found
999 packet_status.packets_eof = true;
1000 }
1001 }
1002
1003 // Debug output
1004 ZmqLogger::Instance()->AppendDebugMethod("FFmpegReader::ReadStream (GetNextPacket)", "requested_frame", requested_frame,"packets_read", packet_status.packets_read(), "packets_decoded", packet_status.packets_decoded(), "is_seeking", is_seeking);
1005
1006 // Check the status of a seek (if any)
1007 if (is_seeking) {
1008 check_seek = CheckSeek(false);
1009 } else {
1010 check_seek = false;
1011 }
1012
1013 if (check_seek) {
1014 // Packet may become NULL on Close inside Seek if CheckSeek returns false
1015 // Jump to the next iteration of this loop
1016 continue;
1017 }
1018
1019 // Video packet
1020 if ((info.has_video && packet && packet->stream_index == videoStream) ||
1021 (info.has_video && packet_status.video_decoded < packet_status.video_read) ||
1022 (info.has_video && !packet && !packet_status.video_eof)) {
1023 // Process Video Packet
1024 ProcessVideoPacket(requested_frame);
1025 }
1026 // Audio packet
1027 if ((info.has_audio && packet && packet->stream_index == audioStream) ||
1028 (info.has_audio && !packet && packet_status.audio_decoded < packet_status.audio_read) ||
1029 (info.has_audio && !packet && !packet_status.audio_eof)) {
1030 // Process Audio Packet
1031 ProcessAudioPacket(requested_frame);
1032 }
1033
1034 // Remove unused packets (sometimes we purposely ignore video or audio packets,
1035 // if the has_video or has_audio properties are manually overridden)
1036 if ((!info.has_video && packet && packet->stream_index == videoStream) ||
1037 (!info.has_audio && packet && packet->stream_index == audioStream)) {
1038 // Keep track of deleted packet counts
1039 if (packet->stream_index == videoStream) {
1040 packet_status.video_decoded++;
1041 } else if (packet->stream_index == audioStream) {
1042 packet_status.audio_decoded++;
1043 }
1044
1045 // Remove unused packets (sometimes we purposely ignore video or audio packets,
1046 // if the has_video or has_audio properties are manually overridden)
1047 RemoveAVPacket(packet);
1048 packet = NULL;
1049 }
1050
1051 // Determine end-of-stream (waiting until final decoder threads finish)
1052 // Force end-of-stream in some situations
1053 packet_status.end_of_file = packet_status.packets_eof && packet_status.video_eof && packet_status.audio_eof;
1054 if ((packet_status.packets_eof && packet_status.packets_read() == packet_status.packets_decoded()) || packet_status.end_of_file) {
1055 // Force EOF (end of file) variables to true, if decoder does not support EOF detection.
1056 // If we have no more packets, and all known packets have been decoded
1057 ZmqLogger::Instance()->AppendDebugMethod("FFmpegReader::ReadStream (force EOF)", "packets_read", packet_status.packets_read(), "packets_decoded", packet_status.packets_decoded(), "packets_eof", packet_status.packets_eof, "video_eof", packet_status.video_eof, "audio_eof", packet_status.audio_eof, "end_of_file", packet_status.end_of_file);
1058 if (!packet_status.video_eof) {
1059 packet_status.video_eof = true;
1060 }
1061 if (!packet_status.audio_eof) {
1062 packet_status.audio_eof = true;
1063 }
1064 packet_status.end_of_file = true;
1065 break;
1066 }
1067 } // end while
1068
1069 // Debug output
1070 ZmqLogger::Instance()->AppendDebugMethod("FFmpegReader::ReadStream (Completed)",
1071 "packets_read", packet_status.packets_read(),
1072 "packets_decoded", packet_status.packets_decoded(),
1073 "end_of_file", packet_status.end_of_file,
1074 "largest_frame_processed", largest_frame_processed,
1075 "Working Cache Count", working_cache.Count());
1076
1077 // Have we reached end-of-stream (or the final frame)?
1078 if (!packet_status.end_of_file && requested_frame >= info.video_length) {
1079 // Force end-of-stream
1080 packet_status.end_of_file = true;
1081 }
1082 if (packet_status.end_of_file) {
1083 // Mark any other working frames as 'finished'
1084 CheckWorkingFrames(requested_frame);
1085 }
1086
1087 // Return requested frame (if found)
1088 std::shared_ptr<Frame> frame = final_cache.GetFrame(requested_frame);
1089 if (frame)
1090 // Return prepared frame
1091 return frame;
1092 else {
1093
1094 // Check if largest frame is still cached
1095 frame = final_cache.GetFrame(largest_frame_processed);
1096 int samples_in_frame = Frame::GetSamplesPerFrame(requested_frame, info.fps,
1098 if (frame) {
1099 // Copy and return the largest processed frame (assuming it was the last in the video file)
1100 std::shared_ptr<Frame> f = CreateFrame(largest_frame_processed);
1101
1102 // Use solid color (if no image data found)
1103 if (!frame->has_image_data) {
1104 // Use solid black frame if no image data available
1105 f->AddColor(info.width, info.height, "#000");
1106 }
1107 // Silence audio data (if any), since we are repeating the last frame
1108 frame->AddAudioSilence(samples_in_frame);
1109
1110 return frame;
1111 } else {
1112 // The largest processed frame is no longer in cache, return a blank frame
1113 std::shared_ptr<Frame> f = CreateFrame(largest_frame_processed);
1114 f->AddColor(info.width, info.height, "#000");
1115 f->AddAudioSilence(samples_in_frame);
1116 return f;
1117 }
1118 }
1119
1120}
1121
1122// Get the next packet (if any)
1123int FFmpegReader::GetNextPacket() {
1124 int found_packet = 0;
1125 AVPacket *next_packet;
1126 next_packet = new AVPacket();
1127 found_packet = av_read_frame(pFormatCtx, next_packet);
1128
1129 if (packet) {
1130 // Remove previous packet before getting next one
1131 RemoveAVPacket(packet);
1132 packet = NULL;
1133 }
1134 if (found_packet >= 0) {
1135 // Update current packet pointer
1136 packet = next_packet;
1137
1138 // Keep track of packet stats
1139 if (packet->stream_index == videoStream) {
1140 packet_status.video_read++;
1141 } else if (packet->stream_index == audioStream) {
1142 packet_status.audio_read++;
1143 }
1144 } else {
1145 // No more packets found
1146 delete next_packet;
1147 packet = NULL;
1148 }
1149 // Return if packet was found (or error number)
1150 return found_packet;
1151}
1152
1153// Get an AVFrame (if any)
1154bool FFmpegReader::GetAVFrame() {
1155 int frameFinished = 0;
1156
1157 // Decode video frame
1158 AVFrame *next_frame = AV_ALLOCATE_FRAME();
1159
1160#if IS_FFMPEG_3_2
1161 int send_packet_err = 0;
1162 int64_t send_packet_pts = 0;
1163 if ((packet && packet->stream_index == videoStream) || !packet) {
1164 send_packet_err = avcodec_send_packet(pCodecCtx, packet);
1165
1166 if (packet && send_packet_err >= 0) {
1167 send_packet_pts = GetPacketPTS();
1168 hold_packet = false;
1169 ZmqLogger::Instance()->AppendDebugMethod("FFmpegReader::GetAVFrame (send packet succeeded)", "send_packet_err", send_packet_err, "send_packet_pts", send_packet_pts);
1170 }
1171 }
1172
1173 #if USE_HW_ACCEL
1174 // Get the format from the variables set in get_hw_dec_format
1175 hw_de_av_pix_fmt = hw_de_av_pix_fmt_global;
1176 hw_de_av_device_type = hw_de_av_device_type_global;
1177 #endif // USE_HW_ACCEL
1178 if (send_packet_err < 0 && send_packet_err != AVERROR_EOF) {
1179 ZmqLogger::Instance()->AppendDebugMethod("FFmpegReader::GetAVFrame (send packet: Not sent [" + av_err2string(send_packet_err) + "])", "send_packet_err", send_packet_err, "send_packet_pts", send_packet_pts);
1180 if (send_packet_err == AVERROR(EAGAIN)) {
1181 hold_packet = true;
1182 ZmqLogger::Instance()->AppendDebugMethod("FFmpegReader::GetAVFrame (send packet: AVERROR(EAGAIN): user must read output with avcodec_receive_frame()", "send_packet_pts", send_packet_pts);
1183 }
1184 if (send_packet_err == AVERROR(EINVAL)) {
1185 ZmqLogger::Instance()->AppendDebugMethod("FFmpegReader::GetAVFrame (send packet: AVERROR(EINVAL): codec not opened, it is an encoder, or requires flush", "send_packet_pts", send_packet_pts);
1186 }
1187 if (send_packet_err == AVERROR(ENOMEM)) {
1188 ZmqLogger::Instance()->AppendDebugMethod("FFmpegReader::GetAVFrame (send packet: AVERROR(ENOMEM): failed to add packet to internal queue, or legitimate decoding errors", "send_packet_pts", send_packet_pts);
1189 }
1190 }
1191
1192 // Always try and receive a packet, if not EOF.
1193 // Even if the above avcodec_send_packet failed to send,
1194 // we might still need to receive a packet.
1195 int receive_frame_err = 0;
1196 AVFrame *next_frame2;
1197#if USE_HW_ACCEL
1198 if (hw_de_on && hw_de_supported) {
1199 next_frame2 = AV_ALLOCATE_FRAME();
1200 }
1201 else
1202#endif // USE_HW_ACCEL
1203 {
1204 next_frame2 = next_frame;
1205 }
1206 pFrame = AV_ALLOCATE_FRAME();
1207 while (receive_frame_err >= 0) {
1208 receive_frame_err = avcodec_receive_frame(pCodecCtx, next_frame2);
1209
1210 if (receive_frame_err != 0) {
1211 ZmqLogger::Instance()->AppendDebugMethod("FFmpegReader::GetAVFrame (receive frame: frame not ready yet from decoder [\" + av_err2string(receive_frame_err) + \"])", "receive_frame_err", receive_frame_err, "send_packet_pts", send_packet_pts);
1212
1213 if (receive_frame_err == AVERROR_EOF) {
1215 "FFmpegReader::GetAVFrame (receive frame: AVERROR_EOF: EOF detected from decoder, flushing buffers)", "send_packet_pts", send_packet_pts);
1216 avcodec_flush_buffers(pCodecCtx);
1217 packet_status.video_eof = true;
1218 }
1219 if (receive_frame_err == AVERROR(EINVAL)) {
1221 "FFmpegReader::GetAVFrame (receive frame: AVERROR(EINVAL): invalid frame received, flushing buffers)", "send_packet_pts", send_packet_pts);
1222 avcodec_flush_buffers(pCodecCtx);
1223 }
1224 if (receive_frame_err == AVERROR(EAGAIN)) {
1226 "FFmpegReader::GetAVFrame (receive frame: AVERROR(EAGAIN): output is not available in this state - user must try to send new input)", "send_packet_pts", send_packet_pts);
1227 }
1228 if (receive_frame_err == AVERROR_INPUT_CHANGED) {
1230 "FFmpegReader::GetAVFrame (receive frame: AVERROR_INPUT_CHANGED: current decoded frame has changed parameters with respect to first decoded frame)", "send_packet_pts", send_packet_pts);
1231 }
1232
1233 // Break out of decoding loop
1234 // Nothing ready for decoding yet
1235 break;
1236 }
1237
1238#if USE_HW_ACCEL
1239 if (hw_de_on && hw_de_supported) {
1240 int err;
1241 if (next_frame2->format == hw_de_av_pix_fmt) {
1242 next_frame->format = AV_PIX_FMT_YUV420P;
1243 if ((err = av_hwframe_transfer_data(next_frame,next_frame2,0)) < 0) {
1244 ZmqLogger::Instance()->AppendDebugMethod("FFmpegReader::GetAVFrame (Failed to transfer data to output frame)", "hw_de_on", hw_de_on);
1245 }
1246 if ((err = av_frame_copy_props(next_frame,next_frame2)) < 0) {
1247 ZmqLogger::Instance()->AppendDebugMethod("FFmpegReader::GetAVFrame (Failed to copy props to output frame)", "hw_de_on", hw_de_on);
1248 }
1249 }
1250 }
1251 else
1252#endif // USE_HW_ACCEL
1253 { // No hardware acceleration used -> no copy from GPU memory needed
1254 next_frame = next_frame2;
1255 }
1256
1257 // TODO also handle possible further frames
1258 // Use only the first frame like avcodec_decode_video2
1259 frameFinished = 1;
1260 packet_status.video_decoded++;
1261
1262 av_image_alloc(pFrame->data, pFrame->linesize, info.width, info.height, (AVPixelFormat)(pStream->codecpar->format), 1);
1263 av_image_copy(pFrame->data, pFrame->linesize, (const uint8_t**)next_frame->data, next_frame->linesize,
1264 (AVPixelFormat)(pStream->codecpar->format), info.width, info.height);
1265
1266 // Get display PTS from video frame, often different than packet->pts.
1267 // Sending packets to the decoder (i.e. packet->pts) is async,
1268 // and retrieving packets from the decoder (frame->pts) is async. In most decoders
1269 // sending and retrieving are separated by multiple calls to this method.
1270 if (next_frame->pts != AV_NOPTS_VALUE) {
1271 // This is the current decoded frame (and should be the pts used) for
1272 // processing this data
1273 video_pts = next_frame->pts;
1274 } else if (next_frame->pkt_dts != AV_NOPTS_VALUE) {
1275 // Some videos only set this timestamp (fallback)
1276 video_pts = next_frame->pkt_dts;
1277 }
1278
1280 "FFmpegReader::GetAVFrame (Successful frame received)", "video_pts", video_pts, "send_packet_pts", send_packet_pts);
1281
1282 // break out of loop after each successful image returned
1283 break;
1284 }
1285#if USE_HW_ACCEL
1286 if (hw_de_on && hw_de_supported) {
1287 AV_FREE_FRAME(&next_frame2);
1288 }
1289 #endif // USE_HW_ACCEL
1290#else
1291 avcodec_decode_video2(pCodecCtx, next_frame, &frameFinished, packet);
1292
1293 // always allocate pFrame (because we do that in the ffmpeg >= 3.2 as well); it will always be freed later
1294 pFrame = AV_ALLOCATE_FRAME();
1295
1296 // is frame finished
1297 if (frameFinished) {
1298 // AVFrames are clobbered on the each call to avcodec_decode_video, so we
1299 // must make a copy of the image data before this method is called again.
1300 avpicture_alloc((AVPicture *) pFrame, pCodecCtx->pix_fmt, info.width, info.height);
1301 av_picture_copy((AVPicture *) pFrame, (AVPicture *) next_frame, pCodecCtx->pix_fmt, info.width,
1302 info.height);
1303 }
1304#endif // IS_FFMPEG_3_2
1305
1306 // deallocate the frame
1307 AV_FREE_FRAME(&next_frame);
1308
1309 // Did we get a video frame?
1310 return frameFinished;
1311}
1312
1313// Check the current seek position and determine if we need to seek again
1314bool FFmpegReader::CheckSeek(bool is_video) {
1315 // Are we seeking for a specific frame?
1316 if (is_seeking) {
1317 // Determine if both an audio and video packet have been decoded since the seek happened.
1318 // If not, allow the ReadStream method to keep looping
1319 if ((is_video_seek && !seek_video_frame_found) || (!is_video_seek && !seek_audio_frame_found))
1320 return false;
1321
1322 // Check for both streams
1323 if ((info.has_video && !seek_video_frame_found) || (info.has_audio && !seek_audio_frame_found))
1324 return false;
1325
1326 // Determine max seeked frame
1327 int64_t max_seeked_frame = std::max(seek_audio_frame_found, seek_video_frame_found);
1328
1329 // determine if we are "before" the requested frame
1330 if (max_seeked_frame >= seeking_frame) {
1331 // SEEKED TOO FAR
1332 ZmqLogger::Instance()->AppendDebugMethod("FFmpegReader::CheckSeek (Too far, seek again)",
1333 "is_video_seek", is_video_seek,
1334 "max_seeked_frame", max_seeked_frame,
1335 "seeking_frame", seeking_frame,
1336 "seeking_pts", seeking_pts,
1337 "seek_video_frame_found", seek_video_frame_found,
1338 "seek_audio_frame_found", seek_audio_frame_found);
1339
1340 // Seek again... to the nearest Keyframe
1341 Seek(seeking_frame - (10 * seek_count * seek_count));
1342 } else {
1343 // SEEK WORKED
1344 ZmqLogger::Instance()->AppendDebugMethod("FFmpegReader::CheckSeek (Successful)",
1345 "is_video_seek", is_video_seek,
1346 "packet->pts", GetPacketPTS(),
1347 "seeking_pts", seeking_pts,
1348 "seeking_frame", seeking_frame,
1349 "seek_video_frame_found", seek_video_frame_found,
1350 "seek_audio_frame_found", seek_audio_frame_found);
1351
1352 // Seek worked, and we are "before" the requested frame
1353 is_seeking = false;
1354 seeking_frame = 0;
1355 seeking_pts = -1;
1356 }
1357 }
1358
1359 // return the pts to seek to (if any)
1360 return is_seeking;
1361}
1362
1363// Process a video packet
1364void FFmpegReader::ProcessVideoPacket(int64_t requested_frame) {
1365 // Get the AVFrame from the current packet
1366 // This sets the video_pts to the correct timestamp
1367 int frame_finished = GetAVFrame();
1368
1369 // Check if the AVFrame is finished and set it
1370 if (!frame_finished) {
1371 // No AVFrame decoded yet, bail out
1372 if (pFrame) {
1373 RemoveAVFrame(pFrame);
1374 }
1375 return;
1376 }
1377
1378 // Calculate current frame #
1379 int64_t current_frame = ConvertVideoPTStoFrame(video_pts);
1380
1381 // Track 1st video packet after a successful seek
1382 if (!seek_video_frame_found && is_seeking)
1383 seek_video_frame_found = current_frame;
1384
1385 // Create or get the existing frame object. Requested frame needs to be created
1386 // in working_cache at least once. Seek can clear the working_cache, so we must
1387 // add the requested frame back to the working_cache here. If it already exists,
1388 // it will be moved to the top of the working_cache.
1389 working_cache.Add(CreateFrame(requested_frame));
1390
1391 // Debug output
1392 ZmqLogger::Instance()->AppendDebugMethod("FFmpegReader::ProcessVideoPacket (Before)", "requested_frame", requested_frame, "current_frame", current_frame);
1393
1394 // Init some things local (for OpenMP)
1395 PixelFormat pix_fmt = AV_GET_CODEC_PIXEL_FORMAT(pStream, pCodecCtx);
1396 int height = info.height;
1397 int width = info.width;
1398 int64_t video_length = info.video_length;
1399
1400 // Create variables for a RGB Frame (since most videos are not in RGB, we must convert it)
1401 AVFrame *pFrameRGB = nullptr;
1402 uint8_t *buffer = nullptr;
1403
1404 // Allocate an AVFrame structure
1405 pFrameRGB = AV_ALLOCATE_FRAME();
1406 if (pFrameRGB == nullptr)
1407 throw OutOfMemory("Failed to allocate frame buffer", path);
1408
1409 // Determine the max size of this source image (based on the timeline's size, the scaling mode,
1410 // and the scaling keyframes). This is a performance improvement, to keep the images as small as possible,
1411 // without losing quality. NOTE: We cannot go smaller than the timeline itself, or the add_layer timeline
1412 // method will scale it back to timeline size before scaling it smaller again. This needs to be fixed in
1413 // the future.
1414 int max_width = info.width;
1415 int max_height = info.height;
1416
1417 Clip *parent = static_cast<Clip *>(ParentClip());
1418 if (parent) {
1419 if (parent->ParentTimeline()) {
1420 // Set max width/height based on parent clip's timeline (if attached to a timeline)
1421 max_width = parent->ParentTimeline()->preview_width;
1422 max_height = parent->ParentTimeline()->preview_height;
1423 }
1424 if (parent->scale == SCALE_FIT || parent->scale == SCALE_STRETCH) {
1425 // Best fit or Stretch scaling (based on max timeline size * scaling keyframes)
1426 float max_scale_x = parent->scale_x.GetMaxPoint().co.Y;
1427 float max_scale_y = parent->scale_y.GetMaxPoint().co.Y;
1428 max_width = std::max(float(max_width), max_width * max_scale_x);
1429 max_height = std::max(float(max_height), max_height * max_scale_y);
1430
1431 } else if (parent->scale == SCALE_CROP) {
1432 // Cropping scale mode (based on max timeline size * cropped size * scaling keyframes)
1433 float max_scale_x = parent->scale_x.GetMaxPoint().co.Y;
1434 float max_scale_y = parent->scale_y.GetMaxPoint().co.Y;
1435 QSize width_size(max_width * max_scale_x,
1436 round(max_width / (float(info.width) / float(info.height))));
1437 QSize height_size(round(max_height / (float(info.height) / float(info.width))),
1438 max_height * max_scale_y);
1439 // respect aspect ratio
1440 if (width_size.width() >= max_width && width_size.height() >= max_height) {
1441 max_width = std::max(max_width, width_size.width());
1442 max_height = std::max(max_height, width_size.height());
1443 } else {
1444 max_width = std::max(max_width, height_size.width());
1445 max_height = std::max(max_height, height_size.height());
1446 }
1447
1448 } else {
1449 // Scale video to equivalent unscaled size
1450 // Since the preview window can change sizes, we want to always
1451 // scale against the ratio of original video size to timeline size
1452 float preview_ratio = 1.0;
1453 if (parent->ParentTimeline()) {
1454 Timeline *t = (Timeline *) parent->ParentTimeline();
1455 preview_ratio = t->preview_width / float(t->info.width);
1456 }
1457 float max_scale_x = parent->scale_x.GetMaxPoint().co.Y;
1458 float max_scale_y = parent->scale_y.GetMaxPoint().co.Y;
1459 max_width = info.width * max_scale_x * preview_ratio;
1460 max_height = info.height * max_scale_y * preview_ratio;
1461 }
1462 }
1463
1464 // Determine if image needs to be scaled (for performance reasons)
1465 int original_height = height;
1466 if (max_width != 0 && max_height != 0 && max_width < width && max_height < height) {
1467 // Override width and height (but maintain aspect ratio)
1468 float ratio = float(width) / float(height);
1469 int possible_width = round(max_height * ratio);
1470 int possible_height = round(max_width / ratio);
1471
1472 if (possible_width <= max_width) {
1473 // use calculated width, and max_height
1474 width = possible_width;
1475 height = max_height;
1476 } else {
1477 // use max_width, and calculated height
1478 width = max_width;
1479 height = possible_height;
1480 }
1481 }
1482
1483 // Determine required buffer size and allocate buffer
1484 const int bytes_per_pixel = 4;
1485 int buffer_size = (width * height * bytes_per_pixel) + 128;
1486 buffer = new unsigned char[buffer_size]();
1487
1488 // Copy picture data from one AVFrame (or AVPicture) to another one.
1489 AV_COPY_PICTURE_DATA(pFrameRGB, buffer, PIX_FMT_RGBA, width, height);
1490
1491 int scale_mode = SWS_FAST_BILINEAR;
1492 if (openshot::Settings::Instance()->HIGH_QUALITY_SCALING) {
1493 scale_mode = SWS_BICUBIC;
1494 }
1495 SwsContext *img_convert_ctx = sws_getContext(info.width, info.height, AV_GET_CODEC_PIXEL_FORMAT(pStream, pCodecCtx), width,
1496 height, PIX_FMT_RGBA, scale_mode, NULL, NULL, NULL);
1497
1498 // Resize / Convert to RGB
1499 sws_scale(img_convert_ctx, pFrame->data, pFrame->linesize, 0,
1500 original_height, pFrameRGB->data, pFrameRGB->linesize);
1501
1502 // Create or get the existing frame object
1503 std::shared_ptr<Frame> f = CreateFrame(current_frame);
1504
1505 // Add Image data to frame
1506 if (!ffmpeg_has_alpha(AV_GET_CODEC_PIXEL_FORMAT(pStream, pCodecCtx))) {
1507 // Add image with no alpha channel, Speed optimization
1508 f->AddImage(width, height, bytes_per_pixel, QImage::Format_RGBA8888_Premultiplied, buffer);
1509 } else {
1510 // Add image with alpha channel (this will be converted to premultipled when needed, but is slower)
1511 f->AddImage(width, height, bytes_per_pixel, QImage::Format_RGBA8888, buffer);
1512 }
1513
1514 // Update working cache
1515 working_cache.Add(f);
1516
1517 // Keep track of last last_video_frame
1518 last_video_frame = f;
1519
1520 // Free the RGB image
1521 AV_FREE_FRAME(&pFrameRGB);
1522
1523 // Remove frame and packet
1524 RemoveAVFrame(pFrame);
1525 sws_freeContext(img_convert_ctx);
1526
1527 // Get video PTS in seconds
1528 video_pts_seconds = (double(video_pts) * info.video_timebase.ToDouble()) + pts_offset_seconds;
1529
1530 // Debug output
1531 ZmqLogger::Instance()->AppendDebugMethod("FFmpegReader::ProcessVideoPacket (After)", "requested_frame", requested_frame, "current_frame", current_frame, "f->number", f->number, "video_pts_seconds", video_pts_seconds);
1532}
1533
1534// Process an audio packet
1535void FFmpegReader::ProcessAudioPacket(int64_t requested_frame) {
1536 AudioLocation location;
1537 // Calculate location of current audio packet
1538 if (packet && packet->pts != AV_NOPTS_VALUE) {
1539 // Determine related video frame and starting sample # from audio PTS
1540 location = GetAudioPTSLocation(packet->pts);
1541
1542 // Track 1st audio packet after a successful seek
1543 if (!seek_audio_frame_found && is_seeking)
1544 seek_audio_frame_found = location.frame;
1545 }
1546
1547 // Create or get the existing frame object. Requested frame needs to be created
1548 // in working_cache at least once. Seek can clear the working_cache, so we must
1549 // add the requested frame back to the working_cache here. If it already exists,
1550 // it will be moved to the top of the working_cache.
1551 working_cache.Add(CreateFrame(requested_frame));
1552
1553 // Debug output
1554 ZmqLogger::Instance()->AppendDebugMethod("FFmpegReader::ProcessAudioPacket (Before)",
1555 "requested_frame", requested_frame,
1556 "target_frame", location.frame,
1557 "starting_sample", location.sample_start);
1558
1559 // Init an AVFrame to hold the decoded audio samples
1560 int frame_finished = 0;
1561 AVFrame *audio_frame = AV_ALLOCATE_FRAME();
1562 AV_RESET_FRAME(audio_frame);
1563
1564 int packet_samples = 0;
1565 int data_size = 0;
1566
1567#if IS_FFMPEG_3_2
1568 int send_packet_err = avcodec_send_packet(aCodecCtx, packet);
1569 if (send_packet_err < 0 && send_packet_err != AVERROR_EOF) {
1570 ZmqLogger::Instance()->AppendDebugMethod("FFmpegReader::ProcessAudioPacket (Packet not sent)");
1571 }
1572 else {
1573 int receive_frame_err = avcodec_receive_frame(aCodecCtx, audio_frame);
1574 if (receive_frame_err >= 0) {
1575 frame_finished = 1;
1576 }
1577 if (receive_frame_err == AVERROR_EOF) {
1578 ZmqLogger::Instance()->AppendDebugMethod("FFmpegReader::ProcessAudioPacket (EOF detected from decoder)");
1579 packet_status.audio_eof = true;
1580 }
1581 if (receive_frame_err == AVERROR(EINVAL) || receive_frame_err == AVERROR_EOF) {
1582 ZmqLogger::Instance()->AppendDebugMethod("FFmpegReader::ProcessAudioPacket (invalid frame received or EOF from decoder)");
1583 avcodec_flush_buffers(aCodecCtx);
1584 }
1585 if (receive_frame_err != 0) {
1586 ZmqLogger::Instance()->AppendDebugMethod("FFmpegReader::ProcessAudioPacket (frame not ready yet from decoder)");
1587 }
1588 }
1589#else
1590 int used = avcodec_decode_audio4(aCodecCtx, audio_frame, &frame_finished, packet);
1591#endif
1592
1593 if (frame_finished) {
1594 packet_status.audio_decoded++;
1595
1596 // This can be different than the current packet, so we need to look
1597 // at the current AVFrame from the audio decoder. This timestamp should
1598 // be used for the remainder of this function
1599 audio_pts = audio_frame->pts;
1600
1601 // Determine related video frame and starting sample # from audio PTS
1602 location = GetAudioPTSLocation(audio_pts);
1603
1604 // determine how many samples were decoded
1605 int plane_size = -1;
1606#if HAVE_CH_LAYOUT
1607 int nb_channels = AV_GET_CODEC_ATTRIBUTES(aStream, aCodecCtx)->ch_layout.nb_channels;
1608#else
1609 int nb_channels = AV_GET_CODEC_ATTRIBUTES(aStream, aCodecCtx)->channels;
1610#endif
1611 data_size = av_samples_get_buffer_size(&plane_size, nb_channels,
1612 audio_frame->nb_samples, (AVSampleFormat) (AV_GET_SAMPLE_FORMAT(aStream, aCodecCtx)), 1);
1613
1614 // Calculate total number of samples
1615 packet_samples = audio_frame->nb_samples * nb_channels;
1616 } else {
1617 if (audio_frame) {
1618 // Free audio frame
1619 AV_FREE_FRAME(&audio_frame);
1620 }
1621 }
1622
1623 // Estimate the # of samples and the end of this packet's location (to prevent GAPS for the next timestamp)
1624 int pts_remaining_samples = packet_samples / info.channels; // Adjust for zero based array
1625
1626 // Bail if no samples found
1627 if (pts_remaining_samples == 0) {
1628 ZmqLogger::Instance()->AppendDebugMethod("FFmpegReader::ProcessAudioPacket (No samples, bailing)",
1629 "packet_samples", packet_samples,
1630 "info.channels", info.channels,
1631 "pts_remaining_samples", pts_remaining_samples);
1632 return;
1633 }
1634
1635 while (pts_remaining_samples) {
1636 // Get Samples per frame (for this frame number)
1637 int samples_per_frame = Frame::GetSamplesPerFrame(previous_packet_location.frame, info.fps, info.sample_rate, info.channels);
1638
1639 // Calculate # of samples to add to this frame
1640 int samples = samples_per_frame - previous_packet_location.sample_start;
1641 if (samples > pts_remaining_samples)
1642 samples = pts_remaining_samples;
1643
1644 // Decrement remaining samples
1645 pts_remaining_samples -= samples;
1646
1647 if (pts_remaining_samples > 0) {
1648 // next frame
1649 previous_packet_location.frame++;
1650 previous_packet_location.sample_start = 0;
1651 } else {
1652 // Increment sample start
1653 previous_packet_location.sample_start += samples;
1654 }
1655 }
1656
1657 ZmqLogger::Instance()->AppendDebugMethod("FFmpegReader::ProcessAudioPacket (ReSample)",
1658 "packet_samples", packet_samples,
1659 "info.channels", info.channels,
1660 "info.sample_rate", info.sample_rate,
1661 "aCodecCtx->sample_fmt", AV_GET_SAMPLE_FORMAT(aStream, aCodecCtx));
1662
1663 // Create output frame
1664 AVFrame *audio_converted = AV_ALLOCATE_FRAME();
1665 AV_RESET_FRAME(audio_converted);
1666 audio_converted->nb_samples = audio_frame->nb_samples;
1667 av_samples_alloc(audio_converted->data, audio_converted->linesize, info.channels, audio_frame->nb_samples, AV_SAMPLE_FMT_FLTP, 0);
1668
1669 SWRCONTEXT *avr = NULL;
1670
1671 // setup resample context
1672 avr = SWR_ALLOC();
1673#if HAVE_CH_LAYOUT
1674 av_opt_set_chlayout(avr, "in_chlayout", &AV_GET_CODEC_ATTRIBUTES(aStream, aCodecCtx)->ch_layout, 0);
1675 av_opt_set_chlayout(avr, "out_chlayout", &AV_GET_CODEC_ATTRIBUTES(aStream, aCodecCtx)->ch_layout, 0);
1676#else
1677 av_opt_set_int(avr, "in_channel_layout", AV_GET_CODEC_ATTRIBUTES(aStream, aCodecCtx)->channel_layout, 0);
1678 av_opt_set_int(avr, "out_channel_layout", AV_GET_CODEC_ATTRIBUTES(aStream, aCodecCtx)->channel_layout, 0);
1679 av_opt_set_int(avr, "in_channels", info.channels, 0);
1680 av_opt_set_int(avr, "out_channels", info.channels, 0);
1681#endif
1682 av_opt_set_int(avr, "in_sample_fmt", AV_GET_SAMPLE_FORMAT(aStream, aCodecCtx), 0);
1683 av_opt_set_int(avr, "out_sample_fmt", AV_SAMPLE_FMT_FLTP, 0);
1684 av_opt_set_int(avr, "in_sample_rate", info.sample_rate, 0);
1685 av_opt_set_int(avr, "out_sample_rate", info.sample_rate, 0);
1686 SWR_INIT(avr);
1687
1688 // Convert audio samples
1689 int nb_samples = SWR_CONVERT(avr, // audio resample context
1690 audio_converted->data, // output data pointers
1691 audio_converted->linesize[0], // output plane size, in bytes. (0 if unknown)
1692 audio_converted->nb_samples, // maximum number of samples that the output buffer can hold
1693 audio_frame->data, // input data pointers
1694 audio_frame->linesize[0], // input plane size, in bytes (0 if unknown)
1695 audio_frame->nb_samples); // number of input samples to convert
1696
1697 // Deallocate resample buffer
1698 SWR_CLOSE(avr);
1699 SWR_FREE(&avr);
1700 avr = NULL;
1701
1702 int64_t starting_frame_number = -1;
1703 for (int channel_filter = 0; channel_filter < info.channels; channel_filter++) {
1704 // Array of floats (to hold samples for each channel)
1705 starting_frame_number = location.frame;
1706 int channel_buffer_size = nb_samples;
1707 auto *channel_buffer = (float *) (audio_converted->data[channel_filter]);
1708
1709 // Loop through samples, and add them to the correct frames
1710 int start = location.sample_start;
1711 int remaining_samples = channel_buffer_size;
1712 while (remaining_samples > 0) {
1713 // Get Samples per frame (for this frame number)
1714 int samples_per_frame = Frame::GetSamplesPerFrame(starting_frame_number, info.fps, info.sample_rate, info.channels);
1715
1716 // Calculate # of samples to add to this frame
1717 int samples = std::fmin(samples_per_frame - start, remaining_samples);
1718
1719 // Create or get the existing frame object
1720 std::shared_ptr<Frame> f = CreateFrame(starting_frame_number);
1721
1722 // Add samples for current channel to the frame.
1723 f->AddAudio(true, channel_filter, start, channel_buffer, samples, 1.0f);
1724
1725 // Debug output
1726 ZmqLogger::Instance()->AppendDebugMethod("FFmpegReader::ProcessAudioPacket (f->AddAudio)",
1727 "frame", starting_frame_number,
1728 "start", start,
1729 "samples", samples,
1730 "channel", channel_filter,
1731 "samples_per_frame", samples_per_frame);
1732
1733 // Add or update cache
1734 working_cache.Add(f);
1735
1736 // Decrement remaining samples
1737 remaining_samples -= samples;
1738
1739 // Increment buffer (to next set of samples)
1740 if (remaining_samples > 0)
1741 channel_buffer += samples;
1742
1743 // Increment frame number
1744 starting_frame_number++;
1745
1746 // Reset starting sample #
1747 start = 0;
1748 }
1749 }
1750
1751 // Free AVFrames
1752 av_free(audio_converted->data[0]);
1753 AV_FREE_FRAME(&audio_converted);
1754 AV_FREE_FRAME(&audio_frame);
1755
1756 // Get audio PTS in seconds
1757 audio_pts_seconds = (double(audio_pts) * info.audio_timebase.ToDouble()) + pts_offset_seconds;
1758
1759 // Debug output
1760 ZmqLogger::Instance()->AppendDebugMethod("FFmpegReader::ProcessAudioPacket (After)",
1761 "requested_frame", requested_frame,
1762 "starting_frame", location.frame,
1763 "end_frame", starting_frame_number - 1,
1764 "audio_pts_seconds", audio_pts_seconds);
1765
1766}
1767
1768
1769// Seek to a specific frame. This is not always frame accurate, it's more of an estimation on many codecs.
1770void FFmpegReader::Seek(int64_t requested_frame) {
1771 // Adjust for a requested frame that is too small or too large
1772 if (requested_frame < 1)
1773 requested_frame = 1;
1774 if (requested_frame > info.video_length)
1775 requested_frame = info.video_length;
1776 if (requested_frame > largest_frame_processed && packet_status.end_of_file) {
1777 // Not possible to search past largest_frame once EOF is reached (no more packets)
1778 return;
1779 }
1780
1781 // Debug output
1782 ZmqLogger::Instance()->AppendDebugMethod("FFmpegReader::Seek",
1783 "requested_frame", requested_frame,
1784 "seek_count", seek_count,
1785 "last_frame", last_frame);
1786
1787 // Clear working cache (since we are seeking to another location in the file)
1788 working_cache.Clear();
1789
1790 // Reset the last frame variable
1791 video_pts = 0.0;
1792 video_pts_seconds = NO_PTS_OFFSET;
1793 audio_pts = 0.0;
1794 audio_pts_seconds = NO_PTS_OFFSET;
1795 hold_packet = false;
1796 last_frame = 0;
1797 current_video_frame = 0;
1798 largest_frame_processed = 0;
1799 bool has_audio_override = info.has_audio;
1800 bool has_video_override = info.has_video;
1801
1802 // Init end-of-file detection variables
1803 packet_status.reset(false);
1804
1805 // Increment seek count
1806 seek_count++;
1807
1808 // If seeking near frame 1, we need to close and re-open the file (this is more reliable than seeking)
1809 int buffer_amount = std::max(max_concurrent_frames, 8);
1810 if (requested_frame - buffer_amount < 20) {
1811 // prevent Open() from seeking again
1812 is_seeking = true;
1813
1814 // Close and re-open file (basically seeking to frame 1)
1815 Close();
1816 Open();
1817
1818 // Update overrides (since closing and re-opening might update these)
1819 info.has_audio = has_audio_override;
1820 info.has_video = has_video_override;
1821
1822 // Not actually seeking, so clear these flags
1823 is_seeking = false;
1824 if (seek_count == 1) {
1825 // Don't redefine this on multiple seek attempts for a specific frame
1826 seeking_frame = 1;
1827 seeking_pts = ConvertFrameToVideoPTS(1);
1828 }
1829 seek_audio_frame_found = 0; // used to detect which frames to throw away after a seek
1830 seek_video_frame_found = 0; // used to detect which frames to throw away after a seek
1831
1832 } else {
1833 // Seek to nearest key-frame (aka, i-frame)
1834 bool seek_worked = false;
1835 int64_t seek_target = 0;
1836
1837 // Seek video stream (if any), except album arts
1838 if (!seek_worked && info.has_video && !HasAlbumArt()) {
1839 seek_target = ConvertFrameToVideoPTS(requested_frame - buffer_amount);
1840 if (av_seek_frame(pFormatCtx, info.video_stream_index, seek_target, AVSEEK_FLAG_BACKWARD) < 0) {
1841 fprintf(stderr, "%s: error while seeking video stream\n", pFormatCtx->AV_FILENAME);
1842 } else {
1843 // VIDEO SEEK
1844 is_video_seek = true;
1845 seek_worked = true;
1846 }
1847 }
1848
1849 // Seek audio stream (if not already seeked... and if an audio stream is found)
1850 if (!seek_worked && info.has_audio) {
1851 seek_target = ConvertFrameToAudioPTS(requested_frame - buffer_amount);
1852 if (av_seek_frame(pFormatCtx, info.audio_stream_index, seek_target, AVSEEK_FLAG_BACKWARD) < 0) {
1853 fprintf(stderr, "%s: error while seeking audio stream\n", pFormatCtx->AV_FILENAME);
1854 } else {
1855 // AUDIO SEEK
1856 is_video_seek = false;
1857 seek_worked = true;
1858 }
1859 }
1860
1861 // Was the seek successful?
1862 if (seek_worked) {
1863 // Flush audio buffer
1864 if (info.has_audio)
1865 avcodec_flush_buffers(aCodecCtx);
1866
1867 // Flush video buffer
1868 if (info.has_video)
1869 avcodec_flush_buffers(pCodecCtx);
1870
1871 // Reset previous audio location to zero
1872 previous_packet_location.frame = -1;
1873 previous_packet_location.sample_start = 0;
1874
1875 // init seek flags
1876 is_seeking = true;
1877 if (seek_count == 1) {
1878 // Don't redefine this on multiple seek attempts for a specific frame
1879 seeking_pts = seek_target;
1880 seeking_frame = requested_frame;
1881 }
1882 seek_audio_frame_found = 0; // used to detect which frames to throw away after a seek
1883 seek_video_frame_found = 0; // used to detect which frames to throw away after a seek
1884
1885 } else {
1886 // seek failed
1887 seeking_pts = 0;
1888 seeking_frame = 0;
1889
1890 // prevent Open() from seeking again
1891 is_seeking = true;
1892
1893 // Close and re-open file (basically seeking to frame 1)
1894 Close();
1895 Open();
1896
1897 // Not actually seeking, so clear these flags
1898 is_seeking = false;
1899
1900 // disable seeking for this reader (since it failed)
1901 enable_seek = false;
1902
1903 // Update overrides (since closing and re-opening might update these)
1904 info.has_audio = has_audio_override;
1905 info.has_video = has_video_override;
1906 }
1907 }
1908}
1909
1910// Get the PTS for the current video packet
1911int64_t FFmpegReader::GetPacketPTS() {
1912 if (packet) {
1913 int64_t current_pts = packet->pts;
1914 if (current_pts == AV_NOPTS_VALUE && packet->dts != AV_NOPTS_VALUE)
1915 current_pts = packet->dts;
1916
1917 // Return adjusted PTS
1918 return current_pts;
1919 } else {
1920 // No packet, return NO PTS
1921 return AV_NOPTS_VALUE;
1922 }
1923}
1924
1925// Update PTS Offset (if any)
1926void FFmpegReader::UpdatePTSOffset() {
1927 if (pts_offset_seconds != NO_PTS_OFFSET) {
1928 // Skip this method if we have already set PTS offset
1929 return;
1930 }
1931 pts_offset_seconds = 0.0;
1932 double video_pts_offset_seconds = 0.0;
1933 double audio_pts_offset_seconds = 0.0;
1934
1935 bool has_video_pts = false;
1936 if (!info.has_video) {
1937 // Mark as checked
1938 has_video_pts = true;
1939 }
1940 bool has_audio_pts = false;
1941 if (!info.has_audio) {
1942 // Mark as checked
1943 has_audio_pts = true;
1944 }
1945
1946 // Loop through the stream (until a packet from all streams is found)
1947 while (!has_video_pts || !has_audio_pts) {
1948 // Get the next packet (if any)
1949 if (GetNextPacket() < 0)
1950 // Break loop when no more packets found
1951 break;
1952
1953 // Get PTS of this packet
1954 int64_t pts = GetPacketPTS();
1955
1956 // Video packet
1957 if (!has_video_pts && packet->stream_index == videoStream) {
1958 // Get the video packet start time (in seconds)
1959 video_pts_offset_seconds = 0.0 - (video_pts * info.video_timebase.ToDouble());
1960
1961 // Is timestamp close to zero (within X seconds)
1962 // Ignore wildly invalid timestamps (i.e. -234923423423)
1963 if (std::abs(video_pts_offset_seconds) <= 10.0) {
1964 has_video_pts = true;
1965 }
1966 }
1967 else if (!has_audio_pts && packet->stream_index == audioStream) {
1968 // Get the audio packet start time (in seconds)
1969 audio_pts_offset_seconds = 0.0 - (pts * info.audio_timebase.ToDouble());
1970
1971 // Is timestamp close to zero (within X seconds)
1972 // Ignore wildly invalid timestamps (i.e. -234923423423)
1973 if (std::abs(audio_pts_offset_seconds) <= 10.0) {
1974 has_audio_pts = true;
1975 }
1976 }
1977 }
1978
1979 // Do we have all valid timestamps to determine PTS offset?
1980 if (has_video_pts && has_audio_pts) {
1981 // Set PTS Offset to the smallest offset
1982 // [ video timestamp ]
1983 // [ audio timestamp ]
1984 //
1985 // ** SHIFT TIMESTAMPS TO ZERO **
1986 //
1987 //[ video timestamp ]
1988 // [ audio timestamp ]
1989 //
1990 // Since all offsets are negative at this point, we want the max value, which
1991 // represents the closest to zero
1992 pts_offset_seconds = std::max(video_pts_offset_seconds, audio_pts_offset_seconds);
1993 }
1994}
1995
1996// Convert PTS into Frame Number
1997int64_t FFmpegReader::ConvertVideoPTStoFrame(int64_t pts) {
1998 // Apply PTS offset
1999 int64_t previous_video_frame = current_video_frame;
2000
2001 // Get the video packet start time (in seconds)
2002 double video_seconds = (double(pts) * info.video_timebase.ToDouble()) + pts_offset_seconds;
2003
2004 // Divide by the video timebase, to get the video frame number (frame # is decimal at this point)
2005 int64_t frame = round(video_seconds * info.fps.ToDouble()) + 1;
2006
2007 // Keep track of the expected video frame #
2008 if (current_video_frame == 0)
2009 current_video_frame = frame;
2010 else {
2011
2012 // Sometimes frames are duplicated due to identical (or similar) timestamps
2013 if (frame == previous_video_frame) {
2014 // return -1 frame number
2015 frame = -1;
2016 } else {
2017 // Increment expected frame
2018 current_video_frame++;
2019 }
2020 }
2021
2022 // Return frame #
2023 return frame;
2024}
2025
2026// Convert Frame Number into Video PTS
2027int64_t FFmpegReader::ConvertFrameToVideoPTS(int64_t frame_number) {
2028 // Get timestamp of this frame (in seconds)
2029 double seconds = (double(frame_number - 1) / info.fps.ToDouble()) + pts_offset_seconds;
2030
2031 // Calculate the # of video packets in this timestamp
2032 int64_t video_pts = round(seconds / info.video_timebase.ToDouble());
2033
2034 // Apply PTS offset (opposite)
2035 return video_pts;
2036}
2037
2038// Convert Frame Number into Video PTS
2039int64_t FFmpegReader::ConvertFrameToAudioPTS(int64_t frame_number) {
2040 // Get timestamp of this frame (in seconds)
2041 double seconds = (double(frame_number - 1) / info.fps.ToDouble()) + pts_offset_seconds;
2042
2043 // Calculate the # of audio packets in this timestamp
2044 int64_t audio_pts = round(seconds / info.audio_timebase.ToDouble());
2045
2046 // Apply PTS offset (opposite)
2047 return audio_pts;
2048}
2049
2050// Calculate Starting video frame and sample # for an audio PTS
2051AudioLocation FFmpegReader::GetAudioPTSLocation(int64_t pts) {
2052 // Get the audio packet start time (in seconds)
2053 double audio_seconds = (double(pts) * info.audio_timebase.ToDouble()) + pts_offset_seconds;
2054
2055 // Divide by the video timebase, to get the video frame number (frame # is decimal at this point)
2056 double frame = (audio_seconds * info.fps.ToDouble()) + 1;
2057
2058 // Frame # as a whole number (no more decimals)
2059 int64_t whole_frame = int64_t(frame);
2060
2061 // Remove the whole number, and only get the decimal of the frame
2062 double sample_start_percentage = frame - double(whole_frame);
2063
2064 // Get Samples per frame
2065 int samples_per_frame = Frame::GetSamplesPerFrame(whole_frame, info.fps, info.sample_rate, info.channels);
2066
2067 // Calculate the sample # to start on
2068 int sample_start = round(double(samples_per_frame) * sample_start_percentage);
2069
2070 // Protect against broken (i.e. negative) timestamps
2071 if (whole_frame < 1)
2072 whole_frame = 1;
2073 if (sample_start < 0)
2074 sample_start = 0;
2075
2076 // Prepare final audio packet location
2077 AudioLocation location = {whole_frame, sample_start};
2078
2079 // Compare to previous audio packet (and fix small gaps due to varying PTS timestamps)
2080 if (previous_packet_location.frame != -1) {
2081 if (location.is_near(previous_packet_location, samples_per_frame, samples_per_frame)) {
2082 int64_t orig_frame = location.frame;
2083 int orig_start = location.sample_start;
2084
2085 // Update sample start, to prevent gaps in audio
2086 location.sample_start = previous_packet_location.sample_start;
2087 location.frame = previous_packet_location.frame;
2088
2089 // Debug output
2090 ZmqLogger::Instance()->AppendDebugMethod("FFmpegReader::GetAudioPTSLocation (Audio Gap Detected)", "Source Frame", orig_frame, "Source Audio Sample", orig_start, "Target Frame", location.frame, "Target Audio Sample", location.sample_start, "pts", pts);
2091
2092 } else {
2093 // Debug output
2094 ZmqLogger::Instance()->AppendDebugMethod("FFmpegReader::GetAudioPTSLocation (Audio Gap Ignored - too big)", "Previous location frame", previous_packet_location.frame, "Target Frame", location.frame, "Target Audio Sample", location.sample_start, "pts", pts);
2095 }
2096 }
2097
2098 // Set previous location
2099 previous_packet_location = location;
2100
2101 // Return the associated video frame and starting sample #
2102 return location;
2103}
2104
2105// Create a new Frame (or return an existing one) and add it to the working queue.
2106std::shared_ptr<Frame> FFmpegReader::CreateFrame(int64_t requested_frame) {
2107 // Check working cache
2108 std::shared_ptr<Frame> output = working_cache.GetFrame(requested_frame);
2109
2110 if (!output) {
2111 // (re-)Check working cache
2112 output = working_cache.GetFrame(requested_frame);
2113 if(output) return output;
2114
2115 // Create a new frame on the working cache
2116 output = std::make_shared<Frame>(requested_frame, info.width, info.height, "#000000", Frame::GetSamplesPerFrame(requested_frame, info.fps, info.sample_rate, info.channels), info.channels);
2117 output->SetPixelRatio(info.pixel_ratio.num, info.pixel_ratio.den); // update pixel ratio
2118 output->ChannelsLayout(info.channel_layout); // update audio channel layout from the parent reader
2119 output->SampleRate(info.sample_rate); // update the frame's sample rate of the parent reader
2120
2121 working_cache.Add(output);
2122
2123 // Set the largest processed frame (if this is larger)
2124 if (requested_frame > largest_frame_processed)
2125 largest_frame_processed = requested_frame;
2126 }
2127 // Return frame
2128 return output;
2129}
2130
2131// Determine if frame is partial due to seek
2132bool FFmpegReader::IsPartialFrame(int64_t requested_frame) {
2133
2134 // Sometimes a seek gets partial frames, and we need to remove them
2135 bool seek_trash = false;
2136 int64_t max_seeked_frame = seek_audio_frame_found; // determine max seeked frame
2137 if (seek_video_frame_found > max_seeked_frame) {
2138 max_seeked_frame = seek_video_frame_found;
2139 }
2140 if ((info.has_audio && seek_audio_frame_found && max_seeked_frame >= requested_frame) ||
2141 (info.has_video && seek_video_frame_found && max_seeked_frame >= requested_frame)) {
2142 seek_trash = true;
2143 }
2144
2145 return seek_trash;
2146}
2147
2148// Check the working queue, and move finished frames to the finished queue
2149void FFmpegReader::CheckWorkingFrames(int64_t requested_frame) {
2150
2151 // Prevent async calls to the following code
2152 const std::lock_guard<std::recursive_mutex> lock(getFrameMutex);
2153
2154 // Get a list of current working queue frames in the cache (in-progress frames)
2155 std::vector<std::shared_ptr<openshot::Frame>> working_frames = working_cache.GetFrames();
2156 std::vector<std::shared_ptr<openshot::Frame>>::iterator working_itr;
2157
2158 // Loop through all working queue frames (sorted by frame #)
2159 for(working_itr = working_frames.begin(); working_itr != working_frames.end(); ++working_itr)
2160 {
2161 // Get working frame
2162 std::shared_ptr<Frame> f = *working_itr;
2163
2164 // Was a frame found? Is frame requested yet?
2165 if (!f || f->number > requested_frame) {
2166 // If not, skip to next one
2167 continue;
2168 }
2169
2170 // Calculate PTS in seconds (of working frame), and the most recent processed pts value
2171 double frame_pts_seconds = (double(f->number - 1) / info.fps.ToDouble()) + pts_offset_seconds;
2172 double recent_pts_seconds = std::max(video_pts_seconds, audio_pts_seconds);
2173
2174 // Determine if video and audio are ready (based on timestamps)
2175 bool is_video_ready = false;
2176 bool is_audio_ready = false;
2177 double recent_pts_diff = recent_pts_seconds - frame_pts_seconds;
2178 if ((frame_pts_seconds <= video_pts_seconds)
2179 || (recent_pts_diff > 1.5)
2180 || packet_status.video_eof || packet_status.end_of_file) {
2181 // Video stream is past this frame (so it must be done)
2182 // OR video stream is too far behind, missing, or end-of-file
2183 is_video_ready = true;
2184 ZmqLogger::Instance()->AppendDebugMethod("FFmpegReader::CheckWorkingFrames (video ready)",
2185 "frame_number", f->number,
2186 "frame_pts_seconds", frame_pts_seconds,
2187 "video_pts_seconds", video_pts_seconds,
2188 "recent_pts_diff", recent_pts_diff);
2189 if (info.has_video && !f->has_image_data) {
2190 // Frame has no image data (copy from previous frame)
2191 // Loop backwards through final frames (looking for the nearest, previous frame image)
2192 for (int64_t previous_frame = requested_frame - 1; previous_frame > 0; previous_frame--) {
2193 std::shared_ptr<Frame> previous_frame_instance = final_cache.GetFrame(previous_frame);
2194 if (previous_frame_instance && previous_frame_instance->has_image_data) {
2195 // Copy image from last decoded frame
2196 f->AddImage(std::make_shared<QImage>(previous_frame_instance->GetImage()->copy()));
2197 break;
2198 }
2199 }
2200
2201 if (last_video_frame && !f->has_image_data) {
2202 // Copy image from last decoded frame
2203 f->AddImage(std::make_shared<QImage>(last_video_frame->GetImage()->copy()));
2204 } else if (!f->has_image_data) {
2205 f->AddColor("#000000");
2206 }
2207 }
2208 }
2209
2210 double audio_pts_diff = audio_pts_seconds - frame_pts_seconds;
2211 if ((frame_pts_seconds < audio_pts_seconds && audio_pts_diff > 1.0)
2212 || (recent_pts_diff > 1.5)
2213 || packet_status.audio_eof || packet_status.end_of_file) {
2214 // Audio stream is past this frame (so it must be done)
2215 // OR audio stream is too far behind, missing, or end-of-file
2216 // Adding a bit of margin here, to allow for partial audio packets
2217 is_audio_ready = true;
2218 ZmqLogger::Instance()->AppendDebugMethod("FFmpegReader::CheckWorkingFrames (audio ready)",
2219 "frame_number", f->number,
2220 "frame_pts_seconds", frame_pts_seconds,
2221 "audio_pts_seconds", audio_pts_seconds,
2222 "audio_pts_diff", audio_pts_diff,
2223 "recent_pts_diff", recent_pts_diff);
2224 }
2225 bool is_seek_trash = IsPartialFrame(f->number);
2226
2227 // Adjust for available streams
2228 if (!info.has_video) is_video_ready = true;
2229 if (!info.has_audio) is_audio_ready = true;
2230
2231 // Debug output
2232 ZmqLogger::Instance()->AppendDebugMethod("FFmpegReader::CheckWorkingFrames",
2233 "frame_number", f->number,
2234 "is_video_ready", is_video_ready,
2235 "is_audio_ready", is_audio_ready,
2236 "video_eof", packet_status.video_eof,
2237 "audio_eof", packet_status.audio_eof,
2238 "end_of_file", packet_status.end_of_file);
2239
2240 // Check if working frame is final
2241 if ((!packet_status.end_of_file && is_video_ready && is_audio_ready) || packet_status.end_of_file || is_seek_trash) {
2242 // Debug output
2243 ZmqLogger::Instance()->AppendDebugMethod("FFmpegReader::CheckWorkingFrames (mark frame as final)",
2244 "requested_frame", requested_frame,
2245 "f->number", f->number,
2246 "is_seek_trash", is_seek_trash,
2247 "Working Cache Count", working_cache.Count(),
2248 "Final Cache Count", final_cache.Count(),
2249 "end_of_file", packet_status.end_of_file);
2250
2251 if (!is_seek_trash) {
2252 // Move frame to final cache
2253 final_cache.Add(f);
2254
2255 // Remove frame from working cache
2256 working_cache.Remove(f->number);
2257
2258 // Update last frame processed
2259 last_frame = f->number;
2260 } else {
2261 // Seek trash, so delete the frame from the working cache, and never add it to the final cache.
2262 working_cache.Remove(f->number);
2263 }
2264
2265 }
2266 }
2267
2268 // Clear vector of frames
2269 working_frames.clear();
2270 working_frames.shrink_to_fit();
2271}
2272
2273// Check for the correct frames per second (FPS) value by scanning the 1st few seconds of video packets.
2274void FFmpegReader::CheckFPS() {
2275 if (check_fps) {
2276 // Do not check FPS more than 1 time
2277 return;
2278 } else {
2279 check_fps = true;
2280 }
2281
2282 int frames_per_second[3] = {0,0,0};
2283 int max_fps_index = sizeof(frames_per_second) / sizeof(frames_per_second[0]);
2284 int fps_index = 0;
2285
2286 int all_frames_detected = 0;
2287 int starting_frames_detected = 0;
2288
2289 // Loop through the stream
2290 while (true) {
2291 // Get the next packet (if any)
2292 if (GetNextPacket() < 0)
2293 // Break loop when no more packets found
2294 break;
2295
2296 // Video packet
2297 if (packet->stream_index == videoStream) {
2298 // Get the video packet start time (in seconds)
2299 double video_seconds = (double(GetPacketPTS()) * info.video_timebase.ToDouble()) + pts_offset_seconds;
2300 fps_index = int(video_seconds); // truncate float timestamp to int (second 1, second 2, second 3)
2301
2302 // Is this video packet from the first few seconds?
2303 if (fps_index >= 0 && fps_index < max_fps_index) {
2304 // Yes, keep track of how many frames per second (over the first few seconds)
2305 starting_frames_detected++;
2306 frames_per_second[fps_index]++;
2307 }
2308
2309 // Track all video packets detected
2310 all_frames_detected++;
2311 }
2312 }
2313
2314 // Calculate FPS (based on the first few seconds of video packets)
2315 float avg_fps = 30.0;
2316 if (starting_frames_detected > 0 && fps_index > 0) {
2317 avg_fps = float(starting_frames_detected) / std::min(fps_index, max_fps_index);
2318 }
2319
2320 // Verify average FPS is a reasonable value
2321 if (avg_fps < 8.0) {
2322 // Invalid FPS assumed, so switching to a sane default FPS instead
2323 avg_fps = 30.0;
2324 }
2325
2326 // Update FPS (truncate average FPS to Integer)
2327 info.fps = Fraction(int(avg_fps), 1);
2328
2329 // Update Duration and Length
2330 if (all_frames_detected > 0) {
2331 // Use all video frames detected to calculate # of frames
2332 info.video_length = all_frames_detected;
2333 info.duration = all_frames_detected / avg_fps;
2334 } else {
2335 // Use previous duration to calculate # of frames
2336 info.video_length = info.duration * avg_fps;
2337 }
2338
2339 // Update video bit rate
2341}
2342
2343// Remove AVFrame from cache (and deallocate its memory)
2344void FFmpegReader::RemoveAVFrame(AVFrame *remove_frame) {
2345 // Remove pFrame (if exists)
2346 if (remove_frame) {
2347 // Free memory
2348 av_freep(&remove_frame->data[0]);
2349#ifndef WIN32
2350 AV_FREE_FRAME(&remove_frame);
2351#endif
2352 }
2353}
2354
2355// Remove AVPacket from cache (and deallocate its memory)
2356void FFmpegReader::RemoveAVPacket(AVPacket *remove_packet) {
2357 // deallocate memory for packet
2358 AV_FREE_PACKET(remove_packet);
2359
2360 // Delete the object
2361 delete remove_packet;
2362}
2363
2364// Generate JSON string of this object
2365std::string FFmpegReader::Json() const {
2366
2367 // Return formatted string
2368 return JsonValue().toStyledString();
2369}
2370
2371// Generate Json::Value for this object
2372Json::Value FFmpegReader::JsonValue() const {
2373
2374 // Create root json object
2375 Json::Value root = ReaderBase::JsonValue(); // get parent properties
2376 root["type"] = "FFmpegReader";
2377 root["path"] = path;
2378
2379 // return JsonValue
2380 return root;
2381}
2382
2383// Load JSON string into this object
2384void FFmpegReader::SetJson(const std::string value) {
2385
2386 // Parse JSON string into JSON objects
2387 try {
2388 const Json::Value root = openshot::stringToJson(value);
2389 // Set all values that match
2390 SetJsonValue(root);
2391 }
2392 catch (const std::exception& e) {
2393 // Error parsing JSON (or missing keys)
2394 throw InvalidJSON("JSON is invalid (missing keys or invalid data types)");
2395 }
2396}
2397
2398// Load Json::Value into this object
2399void FFmpegReader::SetJsonValue(const Json::Value root) {
2400
2401 // Set parent data
2403
2404 // Set data from Json (if key is found)
2405 if (!root["path"].isNull())
2406 path = root["path"].asString();
2407
2408 // Re-Open path, and re-init everything (if needed)
2409 if (is_open) {
2410 Close();
2411 Open();
2412 }
2413}
Header file for all Exception classes.
AVPixelFormat hw_de_av_pix_fmt_global
AVHWDeviceType hw_de_av_device_type_global
int hw_de_on
Header file for FFmpegReader class.
Header file for FFmpegUtilities.
#define AV_FREE_CONTEXT(av_context)
#define SWR_INIT(ctx)
#define AV_FREE_FRAME(av_frame)
#define SWR_CONVERT(ctx, out, linesize, out_count, in, linesize2, in_count)
#define SWR_ALLOC()
#define SWR_CLOSE(ctx)
#define AV_GET_CODEC_TYPE(av_stream)
#define PixelFormat
#define AV_GET_CODEC_PIXEL_FORMAT(av_stream, av_context)
#define AV_GET_CODEC_CONTEXT(av_stream, av_codec)
#define AV_FIND_DECODER_CODEC_ID(av_stream)
#define AV_ALLOCATE_FRAME()
#define AV_REGISTER_ALL
#define PIX_FMT_RGBA
#define SWR_FREE(ctx)
#define AV_COPY_PICTURE_DATA(av_frame, buffer, pix_fmt, width, height)
#define AV_FREE_PACKET(av_packet)
#define SWRCONTEXT
#define AVCODEC_REGISTER_ALL
#define AV_GET_CODEC_ATTRIBUTES(av_stream, av_context)
#define AV_GET_SAMPLE_FORMAT(av_stream, av_context)
#define AV_RESET_FRAME(av_frame)
AVDictionary * opts
#define FF_NUM_PROCESSORS
#define OPEN_MP_NUM_PROCESSORS
Header file for Timeline class.
Header file for ZeroMQ-based Logger class.
void SetMaxBytesFromInfo(int64_t number_of_frames, int width, int height, int sample_rate, int channels)
Set maximum bytes to a different amount based on a ReaderInfo struct.
Definition CacheBase.cpp:30
int64_t Count()
Count the frames in the queue.
void Add(std::shared_ptr< openshot::Frame > frame)
Add a Frame to the cache.
std::shared_ptr< openshot::Frame > GetFrame(int64_t frame_number)
Get a frame from the cache.
std::vector< std::shared_ptr< openshot::Frame > > GetFrames()
Get an array of all Frames.
void Remove(int64_t frame_number)
Remove a specific frame.
void Clear()
Clear the cache of all frames.
This class represents a clip (used to arrange readers on the timeline)
Definition Clip.h:89
openshot::Keyframe scale_x
Curve representing the horizontal scaling in percent (0 to 1)
Definition Clip.h:306
openshot::TimelineBase * ParentTimeline() override
Get the associated Timeline pointer (if any)
Definition Clip.h:284
openshot::Keyframe scale_y
Curve representing the vertical scaling in percent (0 to 1)
Definition Clip.h:307
openshot::ScaleType scale
The scale determines how a clip should be resized to fit its parent.
Definition Clip.h:168
double Y
The Y value of the coordinate (usually representing the value of the property being animated)
Definition Coordinate.h:41
void Open() override
Open File - which is called by the constructor automatically.
FFmpegReader(const std::string &path, bool inspect_reader=true)
Constructor for FFmpegReader.
Json::Value JsonValue() const override
Generate Json::Value for this object.
bool GetIsDurationKnown()
Return true if frame can be read with GetFrame()
void SetJsonValue(const Json::Value root) override
Load Json::Value into this object.
CacheMemory final_cache
Final cache object used to hold final frames.
virtual ~FFmpegReader()
Destructor.
std::string Json() const override
Generate JSON string of this object.
std::shared_ptr< openshot::Frame > GetFrame(int64_t requested_frame) override
void Close() override
Close File.
void SetJson(const std::string value) override
Load JSON string into this object.
This class represents a fraction.
Definition Fraction.h:30
int num
Numerator for the fraction.
Definition Fraction.h:32
float ToFloat()
Return this fraction as a float (i.e. 1/2 = 0.5)
Definition Fraction.cpp:35
double ToDouble() const
Return this fraction as a double (i.e. 1/2 = 0.5)
Definition Fraction.cpp:40
int den
Denominator for the fraction.
Definition Fraction.h:33
int GetSamplesPerFrame(openshot::Fraction fps, int sample_rate, int channels)
Calculate the # of samples per video frame (for the current frame number)
Definition Frame.cpp:484
Exception when no valid codec is found for a file.
Definition Exceptions.h:173
Exception for files that can not be found or opened.
Definition Exceptions.h:188
Exception for invalid JSON.
Definition Exceptions.h:218
Point GetMaxPoint() const
Get max point (by Y coordinate)
Definition KeyFrame.cpp:245
Exception when no streams are found in the file.
Definition Exceptions.h:286
Exception when memory could not be allocated.
Definition Exceptions.h:349
Coordinate co
This is the primary coordinate.
Definition Point.h:66
openshot::ReaderInfo info
Information about the current media file.
Definition ReaderBase.h:88
virtual void SetJsonValue(const Json::Value root)=0
Load Json::Value into this object.
virtual Json::Value JsonValue() const =0
Generate Json::Value for this object.
std::recursive_mutex getFrameMutex
Mutex for multiple threads.
Definition ReaderBase.h:79
openshot::ClipBase * ParentClip()
Parent clip object of this reader (which can be unparented and NULL)
Exception when a reader is closed, and a frame is requested.
Definition Exceptions.h:364
int DE_LIMIT_WIDTH_MAX
Maximum columns that hardware decode can handle.
Definition Settings.h:77
int HW_DE_DEVICE_SET
Which GPU to use to decode (0 is the first)
Definition Settings.h:80
int DE_LIMIT_HEIGHT_MAX
Maximum rows that hardware decode can handle.
Definition Settings.h:74
static Settings * Instance()
Create or get an instance of this logger singleton (invoke the class with this method)
Definition Settings.cpp:23
int HARDWARE_DECODER
Use video codec for faster video decoding (if supported)
Definition Settings.h:62
int preview_height
Optional preview width of timeline image. If your preview window is smaller than the timeline,...
int preview_width
Optional preview width of timeline image. If your preview window is smaller than the timeline,...
This class represents a timeline.
Definition Timeline.h:148
void AppendDebugMethod(std::string method_name, std::string arg1_name="", float arg1_value=-1.0, std::string arg2_name="", float arg2_value=-1.0, std::string arg3_name="", float arg3_value=-1.0, std::string arg4_name="", float arg4_value=-1.0, std::string arg5_name="", float arg5_value=-1.0, std::string arg6_name="", float arg6_value=-1.0)
Append debug information.
static ZmqLogger * Instance()
Create or get an instance of this logger singleton (invoke the class with this method)
Definition ZmqLogger.cpp:35
This namespace is the default namespace for all code in the openshot library.
Definition Compressor.h:29
@ SCALE_FIT
Scale the clip until either height or width fills the canvas (with no cropping)
Definition Enums.h:38
@ SCALE_STRETCH
Scale the clip until both height and width fill the canvas (distort to fit)
Definition Enums.h:39
@ SCALE_CROP
Scale the clip until both height and width fill the canvas (cropping the overlap)
Definition Enums.h:37
ChannelLayout
This enumeration determines the audio channel layout (such as stereo, mono, 5 point surround,...
const Json::Value stringToJson(const std::string value)
Definition Json.cpp:16
This struct holds the associated video frame and starting sample # for an audio packet.
bool is_near(AudioLocation location, int samples_per_frame, int64_t amount)
void reset(bool eof)
int audio_bit_rate
The bit rate of the audio stream (in bytes)
Definition ReaderBase.h:59
int video_bit_rate
The bit rate of the video stream (in bytes)
Definition ReaderBase.h:49
bool has_single_image
Determines if this file only contains a single image.
Definition ReaderBase.h:42
float duration
Length of time (in seconds)
Definition ReaderBase.h:43
openshot::Fraction audio_timebase
The audio timebase determines how long each audio packet should be played.
Definition ReaderBase.h:64
int width
The width of the video (in pixesl)
Definition ReaderBase.h:46
int channels
The number of audio channels used in the audio stream.
Definition ReaderBase.h:61
openshot::Fraction fps
Frames per second, as a fraction (i.e. 24/1 = 24 fps)
Definition ReaderBase.h:48
openshot::Fraction display_ratio
The ratio of width to height of the video stream (i.e. 640x480 has a ratio of 4/3)
Definition ReaderBase.h:51
int height
The height of the video (in pixels)
Definition ReaderBase.h:45
int pixel_format
The pixel format (i.e. YUV420P, RGB24, etc...)
Definition ReaderBase.h:47
int64_t video_length
The number of frames in the video stream.
Definition ReaderBase.h:53
std::string acodec
The name of the audio codec used to encode / decode the video stream.
Definition ReaderBase.h:58
std::map< std::string, std::string > metadata
An optional map/dictionary of metadata for this reader.
Definition ReaderBase.h:65
std::string vcodec
The name of the video codec used to encode / decode the video stream.
Definition ReaderBase.h:52
openshot::Fraction pixel_ratio
The pixel ratio of the video stream as a fraction (i.e. some pixels are not square)
Definition ReaderBase.h:50
openshot::ChannelLayout channel_layout
The channel layout (mono, stereo, 5 point surround, etc...)
Definition ReaderBase.h:62
bool has_video
Determines if this file has a video stream.
Definition ReaderBase.h:40
bool has_audio
Determines if this file has an audio stream.
Definition ReaderBase.h:41
openshot::Fraction video_timebase
The video timebase determines how long each frame stays on the screen.
Definition ReaderBase.h:55
int video_stream_index
The index of the video stream.
Definition ReaderBase.h:54
int sample_rate
The number of audio samples per second (44100 is a common sample rate)
Definition ReaderBase.h:60
int audio_stream_index
The index of the audio stream.
Definition ReaderBase.h:63
int64_t file_size
Size of file (in bytes)
Definition ReaderBase.h:44