src/feature/ffmpeg/ffmpeg-encoder.c (view raw)
1/* Copyright (c) 2013-2015 Jeffrey Pfau
2 *
3 * This Source Code Form is subject to the terms of the Mozilla Public
4 * License, v. 2.0. If a copy of the MPL was not distributed with this
5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
6#include "ffmpeg-encoder.h"
7
8#include <mgba/core/core.h>
9#include <mgba/internal/gba/video.h>
10
11#include <libavcodec/version.h>
12#include <libavcodec/avcodec.h>
13
14#include <libavutil/version.h>
15#if LIBAVUTIL_VERSION_MAJOR >= 53
16#include <libavutil/buffer.h>
17#endif
18#include <libavutil/imgutils.h>
19#include <libavutil/mathematics.h>
20#include <libavutil/opt.h>
21
22#include <libavresample/avresample.h>
23#include <libswscale/swscale.h>
24
25static void _ffmpegPostVideoFrame(struct mAVStream*, const color_t* pixels, size_t stride);
26static void _ffmpegPostAudioFrame(struct mAVStream*, int16_t left, int16_t right);
27static void _ffmpegSetVideoDimensions(struct mAVStream*, unsigned width, unsigned height);
28static void _ffmpegSetVideoFrameRate(struct mAVStream*, unsigned numerator, unsigned denominator);
29
30enum {
31 PREFERRED_SAMPLE_RATE = 0x8000
32};
33
34void FFmpegEncoderInit(struct FFmpegEncoder* encoder) {
35 av_register_all();
36
37 encoder->d.videoDimensionsChanged = _ffmpegSetVideoDimensions;
38 encoder->d.postVideoFrame = _ffmpegPostVideoFrame;
39 encoder->d.postAudioFrame = _ffmpegPostAudioFrame;
40 encoder->d.postAudioBuffer = 0;
41 encoder->d.videoFrameRateChanged = _ffmpegSetVideoFrameRate;
42
43 encoder->audioCodec = 0;
44 encoder->videoCodec = 0;
45 encoder->audio = NULL;
46 encoder->video = NULL;
47 encoder->containerFormat = 0;
48 FFmpegEncoderSetAudio(encoder, "flac", 0);
49 FFmpegEncoderSetVideo(encoder, "png", 0);
50 FFmpegEncoderSetContainer(encoder, "matroska");
51 FFmpegEncoderSetDimensions(encoder, VIDEO_HORIZONTAL_PIXELS, VIDEO_VERTICAL_PIXELS);
52 encoder->iwidth = VIDEO_HORIZONTAL_PIXELS;
53 encoder->iheight = VIDEO_VERTICAL_PIXELS;
54 encoder->frameCycles = VIDEO_TOTAL_LENGTH;
55 encoder->cycles = GBA_ARM7TDMI_FREQUENCY;
56 encoder->resampleContext = 0;
57 encoder->absf = 0;
58 encoder->context = 0;
59 encoder->scaleContext = NULL;
60}
61
62bool FFmpegEncoderSetAudio(struct FFmpegEncoder* encoder, const char* acodec, unsigned abr) {
63 static const struct {
64 int format;
65 int priority;
66 } priorities[] = {
67 { AV_SAMPLE_FMT_S16, 0 },
68 { AV_SAMPLE_FMT_S16P, 1 },
69 { AV_SAMPLE_FMT_S32, 2 },
70 { AV_SAMPLE_FMT_S32P, 2 },
71 { AV_SAMPLE_FMT_FLT, 3 },
72 { AV_SAMPLE_FMT_FLTP, 3 },
73 { AV_SAMPLE_FMT_DBL, 4 },
74 { AV_SAMPLE_FMT_DBLP, 4 }
75 };
76
77 if (!acodec) {
78 encoder->audioCodec = 0;
79 return true;
80 }
81
82 AVCodec* codec = avcodec_find_encoder_by_name(acodec);
83 if (!codec) {
84 return false;
85 }
86
87 if (!codec->sample_fmts) {
88 return false;
89 }
90 size_t i;
91 size_t j;
92 int priority = INT_MAX;
93 encoder->sampleFormat = AV_SAMPLE_FMT_NONE;
94 for (i = 0; codec->sample_fmts[i] != AV_SAMPLE_FMT_NONE; ++i) {
95 for (j = 0; j < sizeof(priorities) / sizeof(*priorities); ++j) {
96 if (codec->sample_fmts[i] == priorities[j].format && priority > priorities[j].priority) {
97 priority = priorities[j].priority;
98 encoder->sampleFormat = codec->sample_fmts[i];
99 }
100 }
101 }
102 if (encoder->sampleFormat == AV_SAMPLE_FMT_NONE) {
103 return false;
104 }
105 encoder->sampleRate = PREFERRED_SAMPLE_RATE;
106 if (codec->supported_samplerates) {
107 for (i = 0; codec->supported_samplerates[i]; ++i) {
108 if (codec->supported_samplerates[i] < PREFERRED_SAMPLE_RATE) {
109 continue;
110 }
111 if (encoder->sampleRate == PREFERRED_SAMPLE_RATE || encoder->sampleRate > codec->supported_samplerates[i]) {
112 encoder->sampleRate = codec->supported_samplerates[i];
113 }
114 }
115 } else if (codec->id == AV_CODEC_ID_AAC) {
116 // HACK: AAC doesn't support 32768Hz (it rounds to 32000), but libfaac doesn't tell us that
117 encoder->sampleRate = 44100;
118 }
119 encoder->audioCodec = acodec;
120 encoder->audioBitrate = abr;
121 return true;
122}
123
124bool FFmpegEncoderSetVideo(struct FFmpegEncoder* encoder, const char* vcodec, unsigned vbr) {
125 static const struct {
126 enum AVPixelFormat format;
127 int priority;
128 } priorities[] = {
129 { AV_PIX_FMT_RGB555, 0 },
130 { AV_PIX_FMT_BGR555, 0 },
131 { AV_PIX_FMT_RGB565, 1 },
132 { AV_PIX_FMT_BGR565, 1 },
133 { AV_PIX_FMT_RGB24, 2 },
134 { AV_PIX_FMT_BGR24, 2 },
135#ifndef USE_LIBAV
136 { AV_PIX_FMT_BGR0, 3 },
137 { AV_PIX_FMT_RGB0, 3 },
138 { AV_PIX_FMT_0BGR, 3 },
139 { AV_PIX_FMT_0RGB, 3 },
140#endif
141 { AV_PIX_FMT_YUV422P, 4 },
142 { AV_PIX_FMT_YUV444P, 5 },
143 { AV_PIX_FMT_YUV420P, 6 }
144 };
145 AVCodec* codec = avcodec_find_encoder_by_name(vcodec);
146 if (!codec) {
147 return false;
148 }
149
150 size_t i;
151 size_t j;
152 int priority = INT_MAX;
153 encoder->pixFormat = AV_PIX_FMT_NONE;
154 for (i = 0; codec->pix_fmts[i] != AV_PIX_FMT_NONE; ++i) {
155 for (j = 0; j < sizeof(priorities) / sizeof(*priorities); ++j) {
156 if (codec->pix_fmts[i] == priorities[j].format && priority > priorities[j].priority) {
157 priority = priorities[j].priority;
158 encoder->pixFormat = codec->pix_fmts[i];
159 }
160 }
161 }
162 if (encoder->pixFormat == AV_PIX_FMT_NONE) {
163 return false;
164 }
165 encoder->videoCodec = vcodec;
166 encoder->videoBitrate = vbr;
167 return true;
168}
169
170bool FFmpegEncoderSetContainer(struct FFmpegEncoder* encoder, const char* container) {
171 AVOutputFormat* oformat = av_guess_format(container, 0, 0);
172 if (!oformat) {
173 return false;
174 }
175 encoder->containerFormat = container;
176 return true;
177}
178
179void FFmpegEncoderSetDimensions(struct FFmpegEncoder* encoder, int width, int height) {
180 encoder->width = width > 0 ? width : VIDEO_HORIZONTAL_PIXELS;
181 encoder->height = height > 0 ? height : VIDEO_VERTICAL_PIXELS;
182}
183
184bool FFmpegEncoderVerifyContainer(struct FFmpegEncoder* encoder) {
185 AVOutputFormat* oformat = av_guess_format(encoder->containerFormat, 0, 0);
186 AVCodec* acodec = avcodec_find_encoder_by_name(encoder->audioCodec);
187 AVCodec* vcodec = avcodec_find_encoder_by_name(encoder->videoCodec);
188 if ((encoder->audioCodec && !acodec) || !vcodec || !oformat) {
189 return false;
190 }
191 if (encoder->audioCodec && !avformat_query_codec(oformat, acodec->id, FF_COMPLIANCE_EXPERIMENTAL)) {
192 return false;
193 }
194 if (!avformat_query_codec(oformat, vcodec->id, FF_COMPLIANCE_EXPERIMENTAL)) {
195 return false;
196 }
197 return true;
198}
199
200bool FFmpegEncoderOpen(struct FFmpegEncoder* encoder, const char* outfile) {
201 AVCodec* acodec = avcodec_find_encoder_by_name(encoder->audioCodec);
202 AVCodec* vcodec = avcodec_find_encoder_by_name(encoder->videoCodec);
203 if ((encoder->audioCodec && !acodec) || !vcodec || !FFmpegEncoderVerifyContainer(encoder)) {
204 return false;
205 }
206
207 encoder->currentAudioSample = 0;
208 encoder->currentAudioFrame = 0;
209 encoder->currentVideoFrame = 0;
210 encoder->nextAudioPts = 0;
211
212 AVOutputFormat* oformat = av_guess_format(encoder->containerFormat, 0, 0);
213#ifndef USE_LIBAV
214 avformat_alloc_output_context2(&encoder->context, oformat, 0, outfile);
215#else
216 encoder->context = avformat_alloc_context();
217 strncpy(encoder->context->filename, outfile, sizeof(encoder->context->filename) - 1);
218 encoder->context->filename[sizeof(encoder->context->filename) - 1] = '\0';
219 encoder->context->oformat = oformat;
220#endif
221
222 if (acodec) {
223#ifdef FFMPEG_USE_CODECPAR
224 encoder->audioStream = avformat_new_stream(encoder->context, NULL);
225 encoder->audio = avcodec_alloc_context3(acodec);
226#else
227 encoder->audioStream = avformat_new_stream(encoder->context, acodec);
228 encoder->audio = encoder->audioStream->codec;
229#endif
230 encoder->audio->bit_rate = encoder->audioBitrate;
231 encoder->audio->channels = 2;
232 encoder->audio->channel_layout = AV_CH_LAYOUT_STEREO;
233 encoder->audio->sample_rate = encoder->sampleRate;
234 encoder->audio->sample_fmt = encoder->sampleFormat;
235 AVDictionary* opts = 0;
236 av_dict_set(&opts, "strict", "-2", 0);
237 if (encoder->context->oformat->flags & AVFMT_GLOBALHEADER) {
238 encoder->audio->flags |= CODEC_FLAG_GLOBAL_HEADER;
239 }
240 avcodec_open2(encoder->audio, acodec, &opts);
241 av_dict_free(&opts);
242#if LIBAVCODEC_VERSION_MAJOR >= 55
243 encoder->audioFrame = av_frame_alloc();
244#else
245 encoder->audioFrame = avcodec_alloc_frame();
246#endif
247 if (!encoder->audio->frame_size) {
248 encoder->audio->frame_size = 1;
249 }
250 encoder->audioFrame->nb_samples = encoder->audio->frame_size;
251 encoder->audioFrame->format = encoder->audio->sample_fmt;
252 encoder->audioFrame->pts = 0;
253 encoder->resampleContext = avresample_alloc_context();
254 av_opt_set_int(encoder->resampleContext, "in_channel_layout", AV_CH_LAYOUT_STEREO, 0);
255 av_opt_set_int(encoder->resampleContext, "out_channel_layout", AV_CH_LAYOUT_STEREO, 0);
256 av_opt_set_int(encoder->resampleContext, "in_sample_rate", PREFERRED_SAMPLE_RATE, 0);
257 av_opt_set_int(encoder->resampleContext, "out_sample_rate", encoder->sampleRate, 0);
258 av_opt_set_int(encoder->resampleContext, "in_sample_fmt", AV_SAMPLE_FMT_S16, 0);
259 av_opt_set_int(encoder->resampleContext, "out_sample_fmt", encoder->sampleFormat, 0);
260 avresample_open(encoder->resampleContext);
261 encoder->audioBufferSize = (encoder->audioFrame->nb_samples * PREFERRED_SAMPLE_RATE / encoder->sampleRate) * 4;
262 encoder->audioBuffer = av_malloc(encoder->audioBufferSize);
263 encoder->postaudioBufferSize = av_samples_get_buffer_size(0, encoder->audio->channels, encoder->audio->frame_size, encoder->audio->sample_fmt, 0);
264 encoder->postaudioBuffer = av_malloc(encoder->postaudioBufferSize);
265 avcodec_fill_audio_frame(encoder->audioFrame, encoder->audio->channels, encoder->audio->sample_fmt, (const uint8_t*) encoder->postaudioBuffer, encoder->postaudioBufferSize, 0);
266
267 if (encoder->audio->codec->id == AV_CODEC_ID_AAC &&
268 (strcasecmp(encoder->containerFormat, "mp4") ||
269 strcasecmp(encoder->containerFormat, "m4v") ||
270 strcasecmp(encoder->containerFormat, "mov"))) {
271 // MP4 container doesn't support the raw ADTS AAC format that the encoder spits out
272#ifdef FFMPEG_USE_NEW_BSF
273 av_bsf_alloc(av_bsf_get_by_name("aac_adtstoasc"), &encoder->absf);
274 avcodec_parameters_from_context(encoder->absf->par_in, encoder->audio);
275 av_bsf_init(encoder->absf);
276#else
277 encoder->absf = av_bitstream_filter_init("aac_adtstoasc");
278#endif
279 }
280#ifdef FFMPEG_USE_CODECPAR
281 avcodec_parameters_from_context(encoder->audioStream->codecpar, encoder->audio);
282#endif
283 }
284
285#ifdef FFMPEG_USE_CODECPAR
286 encoder->videoStream = avformat_new_stream(encoder->context, NULL);
287 encoder->video = avcodec_alloc_context3(vcodec);
288#else
289 encoder->videoStream = avformat_new_stream(encoder->context, vcodec);
290 encoder->video = encoder->videoStream->codec;
291#endif
292 encoder->video->bit_rate = encoder->videoBitrate;
293 encoder->video->width = encoder->width;
294 encoder->video->height = encoder->height;
295 encoder->videoStream->time_base = (AVRational) { encoder->frameCycles, encoder->cycles };
296 encoder->video->time_base = encoder->videoStream->time_base;
297 encoder->video->pix_fmt = encoder->pixFormat;
298 encoder->video->gop_size = 60;
299 encoder->video->max_b_frames = 3;
300 if (encoder->context->oformat->flags & AVFMT_GLOBALHEADER) {
301 encoder->video->flags |= CODEC_FLAG_GLOBAL_HEADER;
302 }
303 if (strcmp(vcodec->name, "libx264") == 0) {
304 // Try to adaptively figure out when you can use a slower encoder
305 if (encoder->width * encoder->height > 1000000) {
306 av_opt_set(encoder->video->priv_data, "preset", "superfast", 0);
307 } else if (encoder->width * encoder->height > 500000) {
308 av_opt_set(encoder->video->priv_data, "preset", "veryfast", 0);
309 } else {
310 av_opt_set(encoder->video->priv_data, "preset", "faster", 0);
311 }
312 av_opt_set(encoder->video->priv_data, "tune", "zerolatency", 0);
313 }
314
315 if (encoder->video->codec->id == AV_CODEC_ID_H264 &&
316 (strcasecmp(encoder->containerFormat, "mp4") ||
317 strcasecmp(encoder->containerFormat, "m4v") ||
318 strcasecmp(encoder->containerFormat, "mov"))) {
319 // QuickTime and a few other things require YUV420
320 encoder->video->pix_fmt = AV_PIX_FMT_YUV420P;
321 }
322 avcodec_open2(encoder->video, vcodec, 0);
323#if LIBAVCODEC_VERSION_MAJOR >= 55
324 encoder->videoFrame = av_frame_alloc();
325#else
326 encoder->videoFrame = avcodec_alloc_frame();
327#endif
328 encoder->videoFrame->format = encoder->video->pix_fmt;
329 encoder->videoFrame->width = encoder->video->width;
330 encoder->videoFrame->height = encoder->video->height;
331 encoder->videoFrame->pts = 0;
332 _ffmpegSetVideoDimensions(&encoder->d, encoder->iwidth, encoder->iheight);
333 av_image_alloc(encoder->videoFrame->data, encoder->videoFrame->linesize, encoder->video->width, encoder->video->height, encoder->video->pix_fmt, 32);
334#ifdef FFMPEG_USE_CODECPAR
335 avcodec_parameters_from_context(encoder->videoStream->codecpar, encoder->video);
336#endif
337
338 if (avio_open(&encoder->context->pb, outfile, AVIO_FLAG_WRITE) < 0) {
339 return false;
340 }
341 return avformat_write_header(encoder->context, 0) >= 0;
342}
343
344void FFmpegEncoderClose(struct FFmpegEncoder* encoder) {
345 if (!encoder->context) {
346 return;
347 }
348 av_write_trailer(encoder->context);
349 avio_close(encoder->context->pb);
350
351 if (encoder->audioCodec) {
352 av_free(encoder->postaudioBuffer);
353 if (encoder->audioBuffer) {
354 av_free(encoder->audioBuffer);
355 }
356#if LIBAVCODEC_VERSION_MAJOR >= 55
357 av_frame_free(&encoder->audioFrame);
358#else
359 avcodec_free_frame(&encoder->audioFrame);
360#endif
361 avcodec_close(encoder->audio);
362 encoder->audio = NULL;
363
364 if (encoder->resampleContext) {
365 avresample_close(encoder->resampleContext);
366 }
367
368 if (encoder->absf) {
369#ifdef FFMPEG_USE_NEW_BSF
370 av_bsf_free(&encoder->absf);
371#else
372 av_bitstream_filter_close(encoder->absf);
373 encoder->absf = 0;
374#endif
375 }
376 }
377
378#if LIBAVCODEC_VERSION_MAJOR >= 55
379 av_frame_free(&encoder->videoFrame);
380#else
381 avcodec_free_frame(&encoder->videoFrame);
382#endif
383 avcodec_close(encoder->video);
384 encoder->video = NULL;
385
386 sws_freeContext(encoder->scaleContext);
387 encoder->scaleContext = NULL;
388
389 avformat_free_context(encoder->context);
390 encoder->context = 0;
391}
392
393bool FFmpegEncoderIsOpen(struct FFmpegEncoder* encoder) {
394 return !!encoder->context;
395}
396
397void _ffmpegPostAudioFrame(struct mAVStream* stream, int16_t left, int16_t right) {
398 struct FFmpegEncoder* encoder = (struct FFmpegEncoder*) stream;
399 if (!encoder->context || !encoder->audioCodec) {
400 return;
401 }
402
403 if (encoder->absf && !left) {
404 // XXX: AVBSF doesn't like silence. Figure out why.
405 left = 1;
406 }
407
408 encoder->audioBuffer[encoder->currentAudioSample * 2] = left;
409 encoder->audioBuffer[encoder->currentAudioSample * 2 + 1] = right;
410
411 ++encoder->currentAudioSample;
412
413 if (encoder->currentAudioSample * 4 < encoder->audioBufferSize) {
414 return;
415 }
416
417 int channelSize = 2 * av_get_bytes_per_sample(encoder->audio->sample_fmt);
418 avresample_convert(encoder->resampleContext, 0, 0, 0,
419 (uint8_t**) &encoder->audioBuffer, 0, encoder->audioBufferSize / 4);
420
421 encoder->currentAudioSample = 0;
422 if (avresample_available(encoder->resampleContext) < encoder->audioFrame->nb_samples) {
423 return;
424 }
425#if LIBAVCODEC_VERSION_MAJOR >= 55
426 av_frame_make_writable(encoder->audioFrame);
427#endif
428 int samples = avresample_read(encoder->resampleContext, encoder->audioFrame->data, encoder->postaudioBufferSize / channelSize);
429
430 encoder->audioFrame->pts = av_rescale_q(encoder->currentAudioFrame, encoder->audio->time_base, encoder->audioStream->time_base);
431 encoder->currentAudioFrame += samples;
432
433 AVPacket packet;
434 av_init_packet(&packet);
435 packet.data = 0;
436 packet.size = 0;
437 packet.pts = encoder->audioFrame->pts;
438
439 int gotData;
440#ifdef FFMPEG_USE_PACKETS
441 avcodec_send_frame(encoder->audio, encoder->audioFrame);
442 gotData = avcodec_receive_packet(encoder->audio, &packet);
443 gotData = (gotData == 0) && packet.size;
444#else
445 avcodec_encode_audio2(encoder->audio, &packet, encoder->audioFrame, &gotData);
446#endif
447 if (gotData) {
448 if (encoder->absf) {
449 AVPacket tempPacket;
450
451#ifdef FFMPEG_USE_NEW_BSF
452 int success = av_bsf_send_packet(encoder->absf, &packet);
453 if (success >= 0) {
454 success = av_bsf_receive_packet(encoder->absf, &tempPacket);
455 }
456#else
457 int success = av_bitstream_filter_filter(encoder->absf, encoder->audio, 0,
458 &tempPacket.data, &tempPacket.size,
459 packet.data, packet.size, 0);
460#endif
461
462 if (success >= 0) {
463#if LIBAVUTIL_VERSION_MAJOR >= 53
464 tempPacket.buf = av_buffer_create(tempPacket.data, tempPacket.size, av_buffer_default_free, 0, 0);
465#endif
466
467#ifdef FFMPEG_USE_PACKET_UNREF
468 av_packet_move_ref(&packet, &tempPacket);
469#else
470 av_free_packet(&packet);
471 packet = tempPacket;
472#endif
473
474 packet.stream_index = encoder->audioStream->index;
475 av_interleaved_write_frame(encoder->context, &packet);
476 }
477 } else {
478 packet.stream_index = encoder->audioStream->index;
479 av_interleaved_write_frame(encoder->context, &packet);
480 }
481 }
482#ifdef FFMPEG_USE_PACKET_UNREF
483 av_packet_unref(&packet);
484#else
485 av_free_packet(&packet);
486#endif
487}
488
489void _ffmpegPostVideoFrame(struct mAVStream* stream, const color_t* pixels, size_t stride) {
490 struct FFmpegEncoder* encoder = (struct FFmpegEncoder*) stream;
491 if (!encoder->context) {
492 return;
493 }
494 stride *= BYTES_PER_PIXEL;
495
496 AVPacket packet;
497
498 av_init_packet(&packet);
499 packet.data = 0;
500 packet.size = 0;
501#if LIBAVCODEC_VERSION_MAJOR >= 55
502 av_frame_make_writable(encoder->videoFrame);
503#endif
504 encoder->videoFrame->pts = av_rescale_q(encoder->currentVideoFrame, encoder->video->time_base, encoder->videoStream->time_base);
505 packet.pts = encoder->videoFrame->pts;
506 ++encoder->currentVideoFrame;
507
508 sws_scale(encoder->scaleContext, (const uint8_t* const*) &pixels, (const int*) &stride, 0, encoder->iheight, encoder->videoFrame->data, encoder->videoFrame->linesize);
509
510 int gotData;
511#ifdef FFMPEG_USE_PACKETS
512 avcodec_send_frame(encoder->video, encoder->videoFrame);
513 gotData = avcodec_receive_packet(encoder->video, &packet) == 0;
514#else
515 avcodec_encode_video2(encoder->video, &packet, encoder->videoFrame, &gotData);
516#endif
517 if (gotData) {
518#ifndef FFMPEG_USE_PACKET_UNREF
519 if (encoder->video->coded_frame->key_frame) {
520 packet.flags |= AV_PKT_FLAG_KEY;
521 }
522#endif
523 packet.stream_index = encoder->videoStream->index;
524 av_interleaved_write_frame(encoder->context, &packet);
525 }
526#ifdef FFMPEG_USE_PACKET_UNREF
527 av_packet_unref(&packet);
528#else
529 av_free_packet(&packet);
530#endif
531}
532
533static void _ffmpegSetVideoDimensions(struct mAVStream* stream, unsigned width, unsigned height) {
534 struct FFmpegEncoder* encoder = (struct FFmpegEncoder*) stream;
535 encoder->iwidth = width;
536 encoder->iheight = height;
537 if (encoder->video) {
538 if (encoder->scaleContext) {
539 sws_freeContext(encoder->scaleContext);
540 }
541 encoder->scaleContext = sws_getContext(encoder->iwidth, encoder->iheight,
542#ifdef COLOR_16_BIT
543#ifdef COLOR_5_6_5
544 AV_PIX_FMT_RGB565,
545#else
546 AV_PIX_FMT_BGR555,
547#endif
548#else
549#ifndef USE_LIBAV
550 AV_PIX_FMT_0BGR32,
551#else
552 AV_PIX_FMT_BGR32,
553#endif
554#endif
555 encoder->videoFrame->width, encoder->videoFrame->height, encoder->video->pix_fmt,
556 SWS_POINT, 0, 0, 0);
557 }
558}
559
560static void _ffmpegSetVideoFrameRate(struct mAVStream* stream, unsigned numerator, unsigned denominator) {
561 struct FFmpegEncoder* encoder = (struct FFmpegEncoder*) stream;
562 FFmpegEncoderSetInputFrameRate(encoder, numerator, denominator);
563}
564
565void FFmpegEncoderSetInputFrameRate(struct FFmpegEncoder* encoder, unsigned numerator, unsigned denominator) {
566 encoder->frameCycles = numerator;
567 encoder->cycles = denominator;
568 if (encoder->video) {
569 encoder->video->time_base = (AVRational) { numerator, denominator };
570 }
571}