OpenShot Library | libopenshot 0.3.3
Loading...
Searching...
No Matches
FFmpegUtilities.h
Go to the documentation of this file.
1
9// Copyright (c) 2008-2024 OpenShot Studios, LLC
10//
11// SPDX-License-Identifier: LGPL-3.0-or-later
12
13#ifndef OPENSHOT_FFMPEG_UTILITIES_H
14#define OPENSHOT_FFMPEG_UTILITIES_H
15
16#include "OpenShotVersion.h" // For FFMPEG_USE_SWRESAMPLE
17
18// Required for libavformat to build on Windows
19#ifndef INT64_C
20#define INT64_C(c) (c ## LL)
21#define UINT64_C(c) (c ## ULL)
22#endif
23
24#ifndef IS_FFMPEG_3_2
25#define IS_FFMPEG_3_2 (LIBAVCODEC_VERSION_INT >= AV_VERSION_INT(57, 64, 101))
26#endif
27
28#ifndef USE_HW_ACCEL
29#define USE_HW_ACCEL (LIBAVCODEC_VERSION_INT >= AV_VERSION_INT(57, 107, 100))
30#endif
31
32#ifndef USE_SW
33#define USE_SW FFMPEG_USE_SWRESAMPLE
34#endif
35
36#define HAVE_CH_LAYOUT (LIBAVUTIL_VERSION_INT >= AV_VERSION_INT(57, 28, 100))
37
38// Include the FFmpeg headers
39extern "C" {
40 #include <libavcodec/avcodec.h>
41 #include <libavformat/avformat.h>
42
43#if (LIBAVFORMAT_VERSION_MAJOR >= 57)
44 #include <libavutil/hwcontext.h> //PM
45#endif
46 #include <libswscale/swscale.h>
47
48#if USE_SW
49 #include <libswresample/swresample.h>
50#else
51 #include <libavresample/avresample.h>
52#endif
53
54 #include <libavutil/mathematics.h>
55 #include <libavutil/pixfmt.h>
56 #include <libavutil/pixdesc.h>
57
58 // libavutil changed folders at some point
59#if LIBAVFORMAT_VERSION_MAJOR >= 53
60 #include <libavutil/opt.h>
61#else
62 #include <libavcodec/opt.h>
63#endif
64
65 // channel header refactored
66#if LIBAVFORMAT_VERSION_MAJOR >= 54
67 #include <libavutil/channel_layout.h>
68#endif
69
70#if IS_FFMPEG_3_2
71 #include "libavutil/imgutils.h"
72#endif
73}
74
75// This was removed from newer versions of FFmpeg (but still used in libopenshot)
76#ifndef AVCODEC_MAX_AUDIO_FRAME_SIZE
77 // 1 second of 48khz 32bit audio
78 #define AVCODEC_MAX_AUDIO_FRAME_SIZE 192000
79#endif
80#ifndef AV_ERROR_MAX_STRING_SIZE
81 #define AV_ERROR_MAX_STRING_SIZE 64
82#endif
83#ifndef AUDIO_PACKET_ENCODING_SIZE
84 // 48khz * S16 (2 bytes) * max channels (8)
85 #define AUDIO_PACKET_ENCODING_SIZE 768000
86#endif
87
88// This wraps an unsafe C macro to be C++ compatible function
89inline static const std::string av_err2string(int errnum)
90{
91 char errbuf[AV_ERROR_MAX_STRING_SIZE];
92 av_strerror(errnum, errbuf, AV_ERROR_MAX_STRING_SIZE);
93 return static_cast<std::string>(errbuf);
94}
95
96// Redefine the C macro to use our new C++ function
97#undef av_err2str
98#define av_err2str(errnum) av_err2string(errnum).c_str()
99
100// Define this for compatibility
101#ifndef PixelFormat
102 #define PixelFormat AVPixelFormat
103#endif
104#ifndef PIX_FMT_RGBA
105 #define PIX_FMT_RGBA AV_PIX_FMT_RGBA
106#endif
107#ifndef PIX_FMT_NONE
108 #define PIX_FMT_NONE AV_PIX_FMT_NONE
109#endif
110#ifndef PIX_FMT_RGB24
111 #define PIX_FMT_RGB24 AV_PIX_FMT_RGB24
112#endif
113#ifndef PIX_FMT_YUV420P
114 #define PIX_FMT_YUV420P AV_PIX_FMT_YUV420P
115#endif
116#ifndef PIX_FMT_YUV444P
117 #define PIX_FMT_YUV444P AV_PIX_FMT_YUV444P
118#endif
119
120// Does ffmpeg pixel format contain an alpha channel?
121inline static bool ffmpeg_has_alpha(PixelFormat pix_fmt) {
122 const AVPixFmtDescriptor *fmt_desc = av_pix_fmt_desc_get(pix_fmt);
123 return bool(fmt_desc->flags & AV_PIX_FMT_FLAG_ALPHA);
124}
125
126// FFmpeg's libavutil/common.h defines an RSHIFT incompatible with Ruby's
127// definition in ruby/config.h, so we move it to FF_RSHIFT
128#ifdef RSHIFT
129 #define FF_RSHIFT(a, b) RSHIFT(a, b)
130 #undef RSHIFT
131#endif
132
133// libswresample/libavresample API switching
134#if USE_SW
135 #define SWR_CONVERT(ctx, out, linesize, out_count, in, linesize2, in_count) \
136 swr_convert(ctx, out, out_count, (const uint8_t **)in, in_count)
137 #define SWR_ALLOC() swr_alloc()
138 #define SWR_CLOSE(ctx) {}
139 #define SWR_FREE(ctx) swr_free(ctx)
140 #define SWR_INIT(ctx) swr_init(ctx)
141 #define SWRCONTEXT SwrContext
142
143#else
144 #define SWR_CONVERT(ctx, out, linesize, out_count, in, linesize2, in_count) \
145 avresample_convert(ctx, out, linesize, out_count, (uint8_t **)in, linesize2, in_count)
146 #define SWR_ALLOC() avresample_alloc_context()
147 #define SWR_CLOSE(ctx) avresample_close(ctx)
148 #define SWR_FREE(ctx) avresample_free(ctx)
149 #define SWR_INIT(ctx) avresample_open(ctx)
150 #define SWRCONTEXT AVAudioResampleContext
151#endif
152
153
154#if (LIBAVFORMAT_VERSION_MAJOR >= 58)
155 #define AV_REGISTER_ALL
156 #define AVCODEC_REGISTER_ALL
157 #define AV_FILENAME url
158 #define AV_SET_FILENAME(oc, f) oc->AV_FILENAME = av_strdup(f)
159 #define MY_INPUT_BUFFER_PADDING_SIZE AV_INPUT_BUFFER_PADDING_SIZE
160 #define AV_ALLOCATE_FRAME() av_frame_alloc()
161 #define AV_ALLOCATE_IMAGE(av_frame, pix_fmt, width, height) \
162 av_image_alloc(av_frame->data, av_frame->linesize, width, height, pix_fmt, 1)
163 #define AV_RESET_FRAME(av_frame) av_frame_unref(av_frame)
164 #define AV_FREE_FRAME(av_frame) av_frame_free(av_frame)
165 #define AV_FREE_PACKET(av_packet) av_packet_unref(av_packet)
166 #define AV_FREE_CONTEXT(av_context) avcodec_free_context(&av_context)
167 #define AV_GET_CODEC_TYPE(av_stream) av_stream->codecpar->codec_type
168 #define AV_FIND_DECODER_CODEC_ID(av_stream) av_stream->codecpar->codec_id
169 #define AV_GET_CODEC_CONTEXT(av_stream, av_codec) \
170 ({ AVCodecContext *context = avcodec_alloc_context3(av_codec); \
171 avcodec_parameters_to_context(context, av_stream->codecpar); \
172 context; })
173 #define AV_GET_CODEC_PAR_CONTEXT(av_stream, av_codec) av_codec;
174 #define AV_GET_CODEC_FROM_STREAM(av_stream,codec_in)
175 #define AV_GET_CODEC_ATTRIBUTES(av_stream, av_context) av_stream->codecpar
176 #define AV_GET_CODEC_PIXEL_FORMAT(av_stream, av_context) (AVPixelFormat) av_stream->codecpar->format
177 #define AV_GET_SAMPLE_FORMAT(av_stream, av_context) av_stream->codecpar->format
178 #define AV_GET_IMAGE_SIZE(pix_fmt, width, height) \
179 av_image_get_buffer_size(pix_fmt, width, height, 1)
180 #define AV_COPY_PICTURE_DATA(av_frame, buffer, pix_fmt, width, height) \
181 av_image_fill_arrays(av_frame->data, av_frame->linesize, buffer, pix_fmt, width, height, 1)
182 #define AV_OUTPUT_CONTEXT(output_context, path) avformat_alloc_output_context2( output_context, NULL, NULL, path)
183 #define AV_OPTION_FIND(priv_data, name) av_opt_find(priv_data, name, NULL, 0, 0)
184 #define AV_OPTION_SET( av_stream, priv_data, name, value, avcodec) \
185 av_opt_set(priv_data, name, value, 0); \
186 avcodec_parameters_from_context(av_stream->codecpar, avcodec);
187 #define ALLOC_CODEC_CTX(ctx, codec, stream) \
188 ctx = avcodec_alloc_context3(codec);
189 #define AV_COPY_PARAMS_FROM_CONTEXT(av_stream, av_codec_ctx) \
190 avcodec_parameters_from_context(av_stream->codecpar, av_codec_ctx);
191
192#elif IS_FFMPEG_3_2
193 #define AV_REGISTER_ALL av_register_all();
194 #define AVCODEC_REGISTER_ALL avcodec_register_all();
195 #define AV_FILENAME filename
196 #define AV_SET_FILENAME(oc, f) snprintf(oc->AV_FILENAME, sizeof(oc->AV_FILENAME), "%s", f)
197 #define MY_INPUT_BUFFER_PADDING_SIZE FF_INPUT_BUFFER_PADDING_SIZE
198 #define AV_ALLOCATE_FRAME() av_frame_alloc()
199 #define AV_ALLOCATE_IMAGE(av_frame, pix_fmt, width, height) \
200 av_image_alloc(av_frame->data, av_frame->linesize, width, height, pix_fmt, 1)
201 #define AV_RESET_FRAME(av_frame) av_frame_unref(av_frame)
202 #define AV_FREE_FRAME(av_frame) av_frame_free(av_frame)
203 #define AV_FREE_PACKET(av_packet) av_packet_unref(av_packet)
204 #define AV_FREE_CONTEXT(av_context) avcodec_free_context(&av_context)
205 #define AV_GET_CODEC_TYPE(av_stream) av_stream->codecpar->codec_type
206 #define AV_FIND_DECODER_CODEC_ID(av_stream) av_stream->codecpar->codec_id
207 #define AV_GET_CODEC_CONTEXT(av_stream, av_codec) \
208 ({ AVCodecContext *context = avcodec_alloc_context3(av_codec); \
209 avcodec_parameters_to_context(context, av_stream->codecpar); \
210 context; })
211 #define AV_GET_CODEC_PAR_CONTEXT(av_stream, av_codec) av_codec;
212 #define AV_GET_CODEC_FROM_STREAM(av_stream,codec_in)
213 #define AV_GET_CODEC_ATTRIBUTES(av_stream, av_context) av_stream->codecpar
214 #define AV_GET_CODEC_PIXEL_FORMAT(av_stream, av_context) \
215 (AVPixelFormat) av_stream->codecpar->format
216 #define AV_GET_SAMPLE_FORMAT(av_stream, av_context) av_stream->codecpar->format
217 #define AV_GET_IMAGE_SIZE(pix_fmt, width, height) av_image_get_buffer_size(pix_fmt, width, height, 1)
218 #define AV_COPY_PICTURE_DATA(av_frame, buffer, pix_fmt, width, height) \
219 av_image_fill_arrays(av_frame->data, av_frame->linesize, buffer, pix_fmt, width, height, 1)
220 #define AV_OUTPUT_CONTEXT(output_context, path) \
221 avformat_alloc_output_context2( output_context, NULL, NULL, path)
222 #define AV_OPTION_FIND(priv_data, name) av_opt_find(priv_data, name, NULL, 0, 0)
223 #define AV_OPTION_SET( av_stream, priv_data, name, value, avcodec) \
224 av_opt_set(priv_data, name, value, 0); \
225 avcodec_parameters_from_context(av_stream->codecpar, avcodec);
226 #define ALLOC_CODEC_CTX(ctx, codec, stream) \
227 ctx = avcodec_alloc_context3(codec);
228 #define AV_COPY_PARAMS_FROM_CONTEXT(av_stream, av_codec) \
229 avcodec_parameters_from_context(av_stream->codecpar, av_codec);
230
231#elif LIBAVFORMAT_VERSION_MAJOR >= 55
232 #define AV_REGISTER_ALL av_register_all();
233 #define AVCODEC_REGISTER_ALL avcodec_register_all();
234 #define AV_FILENAME filename
235 #define AV_SET_FILENAME(oc, f) snprintf(oc->AV_FILENAME, sizeof(oc->AV_FILENAME), "%s", f)
236 #define MY_INPUT_BUFFER_PADDING_SIZE FF_INPUT_BUFFER_PADDING_SIZE
237 #define AV_ALLOCATE_FRAME() av_frame_alloc()
238 #define AV_ALLOCATE_IMAGE(av_frame, pix_fmt, width, height) \
239 avpicture_alloc((AVPicture *) av_frame, pix_fmt, width, height)
240 #define AV_RESET_FRAME(av_frame) av_frame_unref(av_frame)
241 #define AV_FREE_FRAME(av_frame) av_frame_free(av_frame)
242 #define AV_FREE_PACKET(av_packet) av_packet_unref(av_packet)
243 #define AV_FREE_CONTEXT(av_context) avcodec_close(av_context)
244 #define AV_GET_CODEC_TYPE(av_stream) av_stream->codec->codec_type
245 #define AV_FIND_DECODER_CODEC_ID(av_stream) av_stream->codec->codec_id
246 #define AV_GET_CODEC_CONTEXT(av_stream, av_codec) av_stream->codec
247 #define AV_GET_CODEC_PAR_CONTEXT(av_stream, av_codec) av_stream->codec
248 #define AV_GET_CODEC_FROM_STREAM(av_stream, codec_in) codec_in = av_stream->codec;
249 #define AV_GET_CODEC_ATTRIBUTES(av_stream, av_context) av_context
250 #define AV_GET_CODEC_PIXEL_FORMAT(av_stream, av_context) av_context->pix_fmt
251 #define AV_GET_SAMPLE_FORMAT(av_stream, av_context) av_context->sample_fmt
252 #define AV_GET_IMAGE_SIZE(pix_fmt, width, height) avpicture_get_size(pix_fmt, width, height)
253 #define AV_COPY_PICTURE_DATA(av_frame, buffer, pix_fmt, width, height) \
254 avpicture_fill((AVPicture *) av_frame, buffer, pix_fmt, width, height)
255 #define AV_OUTPUT_CONTEXT(output_context, path) oc = avformat_alloc_context()
256 #define AV_OPTION_FIND(priv_data, name) av_opt_find(priv_data, name, NULL, 0, 0)
257 #define AV_OPTION_SET(av_stream, priv_data, name, value, avcodec) av_opt_set (priv_data, name, value, 0)
258 #define ALLOC_CODEC_CTX(ctx, av_codec, stream) \
259 avcodec_get_context_defaults3(av_st->codec, av_codec); \
260 ctx = av_st->codec;
261 #define AV_COPY_PARAMS_FROM_CONTEXT(av_stream, av_codec)
262
263#else
264 #define AV_REGISTER_ALL av_register_all();
265 #define AVCODEC_REGISTER_ALL avcodec_register_all();
266 #define AV_FILENAME filename
267 #define AV_SET_FILENAME(oc, f) snprintf(oc->AV_FILENAME, sizeof(oc->AV_FILENAME), "%s", f)
268 #define MY_INPUT_BUFFER_PADDING_SIZE FF_INPUT_BUFFER_PADDING_SIZE
269 #define AV_ALLOCATE_FRAME() avcodec_alloc_frame()
270 #define AV_ALLOCATE_IMAGE(av_frame, pix_fmt, width, height) \
271 avpicture_alloc((AVPicture *) av_frame, pix_fmt, width, height)
272 #define AV_RESET_FRAME(av_frame) avcodec_get_frame_defaults(av_frame)
273 #define AV_FREE_FRAME(av_frame) avcodec_free_frame(av_frame)
274 #define AV_FREE_PACKET(av_packet) av_free_packet(av_packet)
275 #define AV_FREE_CONTEXT(av_context) avcodec_close(av_context)
276 #define AV_GET_CODEC_TYPE(av_stream) av_stream->codec->codec_type
277 #define AV_FIND_DECODER_CODEC_ID(av_stream) av_stream->codec->codec_id
278 #define AV_GET_CODEC_CONTEXT(av_stream, av_codec) av_stream->codec
279 #define AV_GET_CODEC_PAR_CONTEXT(av_stream, av_codec) av_stream->codec
280 #define AV_GET_CODEC_FROM_STREAM(av_stream, codec_in ) codec_in = av_stream->codec;
281 #define AV_GET_CODEC_ATTRIBUTES(av_stream, av_context) av_context
282 #define AV_GET_CODEC_PIXEL_FORMAT(av_stream, av_context) av_context->pix_fmt
283 #define AV_GET_SAMPLE_FORMAT(av_stream, av_context) av_context->sample_fmt
284 #define AV_GET_IMAGE_SIZE(pix_fmt, width, height) avpicture_get_size(pix_fmt, width, height)
285 #define AV_COPY_PICTURE_DATA(av_frame, buffer, pix_fmt, width, height) \
286 avpicture_fill((AVPicture *) av_frame, buffer, pix_fmt, width, height)
287 #define AV_OUTPUT_CONTEXT(output_context, path) oc = avformat_alloc_context()
288 #define AV_OPTION_FIND(priv_data, name) av_opt_find(priv_data, name, NULL, 0, 0)
289 #define AV_OPTION_SET(av_stream, priv_data, name, value, avcodec) av_opt_set (priv_data, name, value, 0)
290 #define ALLOC_CODEC_CTX(ctx, av_codec, stream) \
291 avcodec_get_context_defaults3(stream->codec, av_codec); \
292 ctx = stream->codec;
293 #define AV_COPY_PARAMS_FROM_CONTEXT(av_stream, av_codec)
294#endif
295
296
297#endif // OPENSHOT_FFMPEG_UTILITIES_H
#define AV_ERROR_MAX_STRING_SIZE
#define PixelFormat
Header file that includes the version number of libopenshot.