3 * Copyright (c) 2001 Fabrice Bellard
4 * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
6 * This file is part of FFmpeg.
8 * FFmpeg is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Lesser General Public
10 * License as published by the Free Software Foundation; either
11 * version 2.1 of the License, or (at your option) any later version.
13 * FFmpeg is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Lesser General Public License for more details.
18 * You should have received a copy of the GNU Lesser General Public
19 * License along with FFmpeg; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
29 #include "libavutil/avassert.h"
30 #include "libavutil/avstring.h"
31 #include "libavutil/bprint.h"
32 #include "libavutil/channel_layout.h"
33 #include "libavutil/crc.h"
34 #include "libavutil/frame.h"
35 #include "libavutil/mathematics.h"
36 #include "libavutil/pixdesc.h"
37 #include "libavutil/imgutils.h"
38 #include "libavutil/samplefmt.h"
39 #include "libavutil/dict.h"
40 #include "libavutil/avassert.h"
43 #include "libavutil/opt.h"
45 #include "frame_thread_encoder.h"
47 #include "bytestream.h"
57 volatile int ff_avcodec_locked;
58 static int volatile entangled_thread_counter = 0;
59 static int (*ff_lockmgr_cb)(void **mutex, enum AVLockOp op);
60 static void *codec_mutex;
61 static void *avformat_mutex;
63 void *av_fast_realloc(void *ptr, unsigned int *size, size_t min_size)
68 min_size = FFMAX(17 * min_size / 16 + 32, min_size);
70 ptr = av_realloc(ptr, min_size);
71 /* we could set this to the unmodified min_size but this is safer
72 * if the user lost the ptr and uses NULL now
82 static inline int ff_fast_malloc(void *ptr, unsigned int *size, size_t min_size, int zero_realloc)
87 min_size = FFMAX(17 * min_size / 16 + 32, min_size);
89 *p = zero_realloc ? av_mallocz(min_size) : av_malloc(min_size);
96 void av_fast_malloc(void *ptr, unsigned int *size, size_t min_size)
98 ff_fast_malloc(ptr, size, min_size, 0);
101 void av_fast_padded_malloc(void *ptr, unsigned int *size, size_t min_size)
104 if (min_size > SIZE_MAX - FF_INPUT_BUFFER_PADDING_SIZE) {
109 if (!ff_fast_malloc(p, size, min_size + FF_INPUT_BUFFER_PADDING_SIZE, 1))
110 memset(*p + min_size, 0, FF_INPUT_BUFFER_PADDING_SIZE);
113 void av_fast_padded_mallocz(void *ptr, unsigned int *size, size_t min_size)
116 if (min_size > SIZE_MAX - FF_INPUT_BUFFER_PADDING_SIZE) {
121 if (!ff_fast_malloc(p, size, min_size + FF_INPUT_BUFFER_PADDING_SIZE, 1))
122 memset(*p, 0, min_size + FF_INPUT_BUFFER_PADDING_SIZE);
125 /* encoder management */
126 static AVCodec *first_avcodec = NULL;
128 AVCodec *av_codec_next(const AVCodec *c)
133 return first_avcodec;
136 static void avcodec_init(void)
138 static int initialized = 0;
140 if (initialized != 0)
145 ff_dsputil_static_init();
148 int av_codec_is_encoder(const AVCodec *codec)
150 return codec && (codec->encode_sub || codec->encode2);
153 int av_codec_is_decoder(const AVCodec *codec)
155 return codec && codec->decode;
158 void avcodec_register(AVCodec *codec)
168 if (codec->init_static_data)
169 codec->init_static_data(codec);
172 unsigned avcodec_get_edge_width(void)
177 void avcodec_set_dimensions(AVCodecContext *s, int width, int height)
179 s->coded_width = width;
180 s->coded_height = height;
181 s->width = -((-width ) >> s->lowres);
182 s->height = -((-height) >> s->lowres);
185 #if (ARCH_ARM && HAVE_NEON) || ARCH_PPC || HAVE_MMX
186 # define STRIDE_ALIGN 16
188 # define STRIDE_ALIGN 8
191 void avcodec_align_dimensions2(AVCodecContext *s, int *width, int *height,
192 int linesize_align[AV_NUM_DATA_POINTERS])
198 switch (s->pix_fmt) {
199 case AV_PIX_FMT_YUV420P:
200 case AV_PIX_FMT_YUYV422:
201 case AV_PIX_FMT_UYVY422:
202 case AV_PIX_FMT_YUV422P:
203 case AV_PIX_FMT_YUV440P:
204 case AV_PIX_FMT_YUV444P:
205 case AV_PIX_FMT_GBRP:
206 case AV_PIX_FMT_GRAY8:
207 case AV_PIX_FMT_GRAY16BE:
208 case AV_PIX_FMT_GRAY16LE:
209 case AV_PIX_FMT_YUVJ420P:
210 case AV_PIX_FMT_YUVJ422P:
211 case AV_PIX_FMT_YUVJ440P:
212 case AV_PIX_FMT_YUVJ444P:
213 case AV_PIX_FMT_YUVA420P:
214 case AV_PIX_FMT_YUVA422P:
215 case AV_PIX_FMT_YUVA444P:
216 case AV_PIX_FMT_YUV420P9LE:
217 case AV_PIX_FMT_YUV420P9BE:
218 case AV_PIX_FMT_YUV420P10LE:
219 case AV_PIX_FMT_YUV420P10BE:
220 case AV_PIX_FMT_YUV420P12LE:
221 case AV_PIX_FMT_YUV420P12BE:
222 case AV_PIX_FMT_YUV420P14LE:
223 case AV_PIX_FMT_YUV420P14BE:
224 case AV_PIX_FMT_YUV422P9LE:
225 case AV_PIX_FMT_YUV422P9BE:
226 case AV_PIX_FMT_YUV422P10LE:
227 case AV_PIX_FMT_YUV422P10BE:
228 case AV_PIX_FMT_YUV422P12LE:
229 case AV_PIX_FMT_YUV422P12BE:
230 case AV_PIX_FMT_YUV422P14LE:
231 case AV_PIX_FMT_YUV422P14BE:
232 case AV_PIX_FMT_YUV444P9LE:
233 case AV_PIX_FMT_YUV444P9BE:
234 case AV_PIX_FMT_YUV444P10LE:
235 case AV_PIX_FMT_YUV444P10BE:
236 case AV_PIX_FMT_YUV444P12LE:
237 case AV_PIX_FMT_YUV444P12BE:
238 case AV_PIX_FMT_YUV444P14LE:
239 case AV_PIX_FMT_YUV444P14BE:
240 case AV_PIX_FMT_GBRP9LE:
241 case AV_PIX_FMT_GBRP9BE:
242 case AV_PIX_FMT_GBRP10LE:
243 case AV_PIX_FMT_GBRP10BE:
244 case AV_PIX_FMT_GBRP12LE:
245 case AV_PIX_FMT_GBRP12BE:
246 case AV_PIX_FMT_GBRP14LE:
247 case AV_PIX_FMT_GBRP14BE:
248 w_align = 16; //FIXME assume 16 pixel per macroblock
249 h_align = 16 * 2; // interlaced needs 2 macroblocks height
251 case AV_PIX_FMT_YUV411P:
252 case AV_PIX_FMT_UYYVYY411:
256 case AV_PIX_FMT_YUV410P:
257 if (s->codec_id == AV_CODEC_ID_SVQ1) {
262 case AV_PIX_FMT_RGB555:
263 if (s->codec_id == AV_CODEC_ID_RPZA) {
268 case AV_PIX_FMT_PAL8:
269 case AV_PIX_FMT_BGR8:
270 case AV_PIX_FMT_RGB8:
271 if (s->codec_id == AV_CODEC_ID_SMC ||
272 s->codec_id == AV_CODEC_ID_CINEPAK) {
277 case AV_PIX_FMT_BGR24:
278 if ((s->codec_id == AV_CODEC_ID_MSZH) ||
279 (s->codec_id == AV_CODEC_ID_ZLIB)) {
284 case AV_PIX_FMT_RGB24:
285 if (s->codec_id == AV_CODEC_ID_CINEPAK) {
296 if (s->codec_id == AV_CODEC_ID_IFF_ILBM || s->codec_id == AV_CODEC_ID_IFF_BYTERUN1) {
297 w_align = FFMAX(w_align, 8);
300 *width = FFALIGN(*width, w_align);
301 *height = FFALIGN(*height, h_align);
302 if (s->codec_id == AV_CODEC_ID_H264 || s->lowres)
303 // some of the optimized chroma MC reads one line too much
304 // which is also done in mpeg decoders with lowres > 0
307 for (i = 0; i < 4; i++)
308 linesize_align[i] = STRIDE_ALIGN;
311 void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height)
313 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(s->pix_fmt);
314 int chroma_shift = desc->log2_chroma_w;
315 int linesize_align[AV_NUM_DATA_POINTERS];
318 avcodec_align_dimensions2(s, width, height, linesize_align);
319 align = FFMAX(linesize_align[0], linesize_align[3]);
320 linesize_align[1] <<= chroma_shift;
321 linesize_align[2] <<= chroma_shift;
322 align = FFMAX3(align, linesize_align[1], linesize_align[2]);
323 *width = FFALIGN(*width, align);
326 int avcodec_fill_audio_frame(AVFrame *frame, int nb_channels,
327 enum AVSampleFormat sample_fmt, const uint8_t *buf,
328 int buf_size, int align)
330 int ch, planar, needed_size, ret = 0;
332 needed_size = av_samples_get_buffer_size(NULL, nb_channels,
333 frame->nb_samples, sample_fmt,
335 if (buf_size < needed_size)
336 return AVERROR(EINVAL);
338 planar = av_sample_fmt_is_planar(sample_fmt);
339 if (planar && nb_channels > AV_NUM_DATA_POINTERS) {
340 if (!(frame->extended_data = av_mallocz(nb_channels *
341 sizeof(*frame->extended_data))))
342 return AVERROR(ENOMEM);
344 frame->extended_data = frame->data;
347 if ((ret = av_samples_fill_arrays(frame->extended_data, &frame->linesize[0],
348 (uint8_t *)(intptr_t)buf, nb_channels, frame->nb_samples,
349 sample_fmt, align)) < 0) {
350 if (frame->extended_data != frame->data)
351 av_freep(&frame->extended_data);
354 if (frame->extended_data != frame->data) {
355 for (ch = 0; ch < AV_NUM_DATA_POINTERS; ch++)
356 frame->data[ch] = frame->extended_data[ch];
362 static int update_frame_pool(AVCodecContext *avctx, AVFrame *frame)
364 FramePool *pool = avctx->internal->pool;
367 switch (avctx->codec_type) {
368 case AVMEDIA_TYPE_VIDEO: {
371 int w = frame->width;
372 int h = frame->height;
373 int tmpsize, unaligned;
375 if (pool->format == frame->format &&
376 pool->width == frame->width && pool->height == frame->height)
379 avcodec_align_dimensions2(avctx, &w, &h, pool->stride_align);
381 if (!(avctx->flags & CODEC_FLAG_EMU_EDGE)) {
387 // NOTE: do not align linesizes individually, this breaks e.g. assumptions
388 // that linesize[0] == 2*linesize[1] in the MPEG-encoder for 4:2:2
389 av_image_fill_linesizes(picture.linesize, avctx->pix_fmt, w);
390 // increase alignment of w for next try (rhs gives the lowest bit set in w)
394 for (i = 0; i < 4; i++)
395 unaligned |= picture.linesize[i] % pool->stride_align[i];
398 tmpsize = av_image_fill_pointers(picture.data, avctx->pix_fmt, h,
399 NULL, picture.linesize);
403 for (i = 0; i < 3 && picture.data[i + 1]; i++)
404 size[i] = picture.data[i + 1] - picture.data[i];
405 size[i] = tmpsize - (picture.data[i] - picture.data[0]);
407 for (i = 0; i < 4; i++) {
408 av_buffer_pool_uninit(&pool->pools[i]);
409 pool->linesize[i] = picture.linesize[i];
411 pool->pools[i] = av_buffer_pool_init(size[i] + 16,
412 CONFIG_MEMORY_POISONING ?
415 if (!pool->pools[i]) {
416 ret = AVERROR(ENOMEM);
421 pool->format = frame->format;
422 pool->width = frame->width;
423 pool->height = frame->height;
427 case AVMEDIA_TYPE_AUDIO: {
428 int ch = av_frame_get_channels(frame); //av_get_channel_layout_nb_channels(frame->channel_layout);
429 int planar = av_sample_fmt_is_planar(frame->format);
430 int planes = planar ? ch : 1;
432 if (pool->format == frame->format && pool->planes == planes &&
433 pool->channels == ch && frame->nb_samples == pool->samples)
436 av_buffer_pool_uninit(&pool->pools[0]);
437 ret = av_samples_get_buffer_size(&pool->linesize[0], ch,
438 frame->nb_samples, frame->format, 0);
442 pool->pools[0] = av_buffer_pool_init(pool->linesize[0], NULL);
443 if (!pool->pools[0]) {
444 ret = AVERROR(ENOMEM);
448 pool->format = frame->format;
449 pool->planes = planes;
451 pool->samples = frame->nb_samples;
454 default: av_assert0(0);
458 for (i = 0; i < 4; i++)
459 av_buffer_pool_uninit(&pool->pools[i]);
461 pool->planes = pool->channels = pool->samples = 0;
462 pool->width = pool->height = 0;
466 static int audio_get_buffer(AVCodecContext *avctx, AVFrame *frame)
468 FramePool *pool = avctx->internal->pool;
469 int planes = pool->planes;
472 frame->linesize[0] = pool->linesize[0];
474 if (planes > AV_NUM_DATA_POINTERS) {
475 frame->extended_data = av_mallocz(planes * sizeof(*frame->extended_data));
476 frame->nb_extended_buf = planes - AV_NUM_DATA_POINTERS;
477 frame->extended_buf = av_mallocz(frame->nb_extended_buf *
478 sizeof(*frame->extended_buf));
479 if (!frame->extended_data || !frame->extended_buf) {
480 av_freep(&frame->extended_data);
481 av_freep(&frame->extended_buf);
482 return AVERROR(ENOMEM);
485 frame->extended_data = frame->data;
486 av_assert0(frame->nb_extended_buf == 0);
489 for (i = 0; i < FFMIN(planes, AV_NUM_DATA_POINTERS); i++) {
490 frame->buf[i] = av_buffer_pool_get(pool->pools[0]);
493 frame->extended_data[i] = frame->data[i] = frame->buf[i]->data;
495 for (i = 0; i < frame->nb_extended_buf; i++) {
496 frame->extended_buf[i] = av_buffer_pool_get(pool->pools[0]);
497 if (!frame->extended_buf[i])
499 frame->extended_data[i + AV_NUM_DATA_POINTERS] = frame->extended_buf[i]->data;
502 if (avctx->debug & FF_DEBUG_BUFFERS)
503 av_log(avctx, AV_LOG_DEBUG, "default_get_buffer called on frame %p", frame);
507 av_frame_unref(frame);
508 return AVERROR(ENOMEM);
511 static int video_get_buffer(AVCodecContext *s, AVFrame *pic)
513 FramePool *pool = s->internal->pool;
514 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pic->format);
515 int pixel_size = desc->comp[0].step_minus1 + 1;
516 int h_chroma_shift, v_chroma_shift;
519 if (pic->data[0] != NULL) {
520 av_log(s, AV_LOG_ERROR, "pic->data[0]!=NULL in avcodec_default_get_buffer\n");
524 memset(pic->data, 0, sizeof(pic->data));
525 pic->extended_data = pic->data;
527 av_pix_fmt_get_chroma_sub_sample(s->pix_fmt, &h_chroma_shift, &v_chroma_shift);
529 for (i = 0; i < 4 && pool->pools[i]; i++) {
530 const int h_shift = i == 0 ? 0 : h_chroma_shift;
531 const int v_shift = i == 0 ? 0 : v_chroma_shift;
533 pic->linesize[i] = pool->linesize[i];
535 pic->buf[i] = av_buffer_pool_get(pool->pools[i]);
539 // no edge if EDGE EMU or not planar YUV
540 if ((s->flags & CODEC_FLAG_EMU_EDGE) || !pool->pools[2])
541 pic->data[i] = pic->buf[i]->data;
543 pic->data[i] = pic->buf[i]->data +
544 FFALIGN((pic->linesize[i] * EDGE_WIDTH >> v_shift) +
545 (pixel_size * EDGE_WIDTH >> h_shift), pool->stride_align[i]);
548 for (; i < AV_NUM_DATA_POINTERS; i++) {
550 pic->linesize[i] = 0;
552 if (pic->data[1] && !pic->data[2])
553 avpriv_set_systematic_pal2((uint32_t *)pic->data[1], s->pix_fmt);
555 if (s->debug & FF_DEBUG_BUFFERS)
556 av_log(s, AV_LOG_DEBUG, "default_get_buffer called on pic %p\n", pic);
561 return AVERROR(ENOMEM);
564 void avpriv_color_frame(AVFrame *frame, const int c[4])
566 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(frame->format);
569 av_assert0(desc->flags & PIX_FMT_PLANAR);
571 for (p = 0; p<desc->nb_components; p++) {
572 uint8_t *dst = frame->data[p];
573 int is_chroma = p == 1 || p == 2;
574 int bytes = -((-frame->width) >> (is_chroma ? desc->log2_chroma_w : 0));
575 for (y = 0; y<-((-frame->height) >> (is_chroma ? desc->log2_chroma_h : 0)); y++){
576 if (desc->comp[0].depth_minus1 >= 8) {
577 for (x = 0; x<bytes; x++)
578 ((uint16_t*)dst)[x] = c[p];
580 memset(dst, c[p], bytes);
581 dst += frame->linesize[p];
586 int avcodec_default_get_buffer2(AVCodecContext *avctx, AVFrame *frame, int flags)
590 if ((ret = update_frame_pool(avctx, frame)) < 0)
593 #if FF_API_GET_BUFFER
594 frame->type = FF_BUFFER_TYPE_INTERNAL;
597 switch (avctx->codec_type) {
598 case AVMEDIA_TYPE_VIDEO:
599 return video_get_buffer(avctx, frame);
600 case AVMEDIA_TYPE_AUDIO:
601 return audio_get_buffer(avctx, frame);
607 int ff_init_buffer_info(AVCodecContext *avctx, AVFrame *frame)
610 frame->pkt_pts = avctx->pkt->pts;
611 av_frame_set_pkt_pos (frame, avctx->pkt->pos);
612 av_frame_set_pkt_duration(frame, avctx->pkt->duration);
613 av_frame_set_pkt_size (frame, avctx->pkt->size);
615 frame->pkt_pts = AV_NOPTS_VALUE;
616 av_frame_set_pkt_pos (frame, -1);
617 av_frame_set_pkt_duration(frame, 0);
618 av_frame_set_pkt_size (frame, -1);
620 frame->reordered_opaque = avctx->reordered_opaque;
622 switch (avctx->codec->type) {
623 case AVMEDIA_TYPE_VIDEO:
624 frame->width = FFMAX(avctx->width , -((-avctx->coded_width )>>avctx->lowres));
625 frame->height = FFMAX(avctx->height, -((-avctx->coded_height)>>avctx->lowres));
626 if (frame->format < 0)
627 frame->format = avctx->pix_fmt;
628 if (!frame->sample_aspect_ratio.num)
629 frame->sample_aspect_ratio = avctx->sample_aspect_ratio;
631 case AVMEDIA_TYPE_AUDIO:
632 if (!frame->sample_rate)
633 frame->sample_rate = avctx->sample_rate;
634 if (frame->format < 0)
635 frame->format = avctx->sample_fmt;
636 if (!frame->channel_layout) {
637 if (avctx->channel_layout) {
638 if (av_get_channel_layout_nb_channels(avctx->channel_layout) !=
640 av_log(avctx, AV_LOG_ERROR, "Inconsistent channel "
642 return AVERROR(EINVAL);
645 frame->channel_layout = avctx->channel_layout;
647 if (avctx->channels > FF_SANE_NB_CHANNELS) {
648 av_log(avctx, AV_LOG_ERROR, "Too many channels: %d.\n",
650 return AVERROR(ENOSYS);
654 av_frame_set_channels(frame, avctx->channels);
660 #if FF_API_GET_BUFFER
661 int avcodec_default_get_buffer(AVCodecContext *avctx, AVFrame *frame)
663 return avcodec_default_get_buffer2(avctx, frame, 0);
666 typedef struct CompatReleaseBufPriv {
667 AVCodecContext avctx;
669 } CompatReleaseBufPriv;
671 static void compat_free_buffer(void *opaque, uint8_t *data)
673 CompatReleaseBufPriv *priv = opaque;
674 if (priv->avctx.release_buffer)
675 priv->avctx.release_buffer(&priv->avctx, &priv->frame);
679 static void compat_release_buffer(void *opaque, uint8_t *data)
681 AVBufferRef *buf = opaque;
682 av_buffer_unref(&buf);
686 static int get_buffer_internal(AVCodecContext *avctx, AVFrame *frame, int flags)
690 if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
691 if ((ret = av_image_check_size(avctx->width, avctx->height, 0, avctx)) < 0 || avctx->pix_fmt<0) {
692 av_log(avctx, AV_LOG_ERROR, "video_get_buffer: image parameters invalid\n");
693 return AVERROR(EINVAL);
696 if ((ret = ff_init_buffer_info(avctx, frame)) < 0)
699 #if FF_API_GET_BUFFER
701 * Wrap an old get_buffer()-allocated buffer in an bunch of AVBuffers.
702 * We wrap each plane in its own AVBuffer. Each of those has a reference to
703 * a dummy AVBuffer as its private data, unreffing it on free.
704 * When all the planes are freed, the dummy buffer's free callback calls
707 if (avctx->get_buffer) {
708 CompatReleaseBufPriv *priv = NULL;
709 AVBufferRef *dummy_buf = NULL;
712 if (flags & AV_GET_BUFFER_FLAG_REF)
713 frame->reference = 1;
715 ret = avctx->get_buffer(avctx, frame);
719 /* return if the buffers are already set up
720 * this would happen e.g. when a custom get_buffer() calls
721 * avcodec_default_get_buffer
726 priv = av_mallocz(sizeof(*priv));
728 ret = AVERROR(ENOMEM);
731 priv->avctx = *avctx;
732 priv->frame = *frame;
734 dummy_buf = av_buffer_create(NULL, 0, compat_free_buffer, priv, 0);
736 ret = AVERROR(ENOMEM);
740 #define WRAP_PLANE(ref_out, data, data_size) \
742 AVBufferRef *dummy_ref = av_buffer_ref(dummy_buf); \
744 ret = AVERROR(ENOMEM); \
747 ref_out = av_buffer_create(data, data_size, compat_release_buffer, \
750 av_frame_unref(frame); \
751 ret = AVERROR(ENOMEM); \
756 if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
757 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(frame->format);
759 planes = av_pix_fmt_count_planes(frame->format);
760 /* workaround for AVHWAccel plane count of 0, buf[0] is used as
761 check for allocated buffers: make libavcodec happy */
762 if (desc && desc->flags & PIX_FMT_HWACCEL)
764 if (!desc || planes <= 0) {
765 ret = AVERROR(EINVAL);
769 for (i = 0; i < planes; i++) {
770 int v_shift = (i == 1 || i == 2) ? desc->log2_chroma_h : 0;
771 int plane_size = (frame->height >> v_shift) * frame->linesize[i];
773 WRAP_PLANE(frame->buf[i], frame->data[i], plane_size);
776 int planar = av_sample_fmt_is_planar(frame->format);
777 planes = planar ? avctx->channels : 1;
779 if (planes > FF_ARRAY_ELEMS(frame->buf)) {
780 frame->nb_extended_buf = planes - FF_ARRAY_ELEMS(frame->buf);
781 frame->extended_buf = av_malloc(sizeof(*frame->extended_buf) *
782 frame->nb_extended_buf);
783 if (!frame->extended_buf) {
784 ret = AVERROR(ENOMEM);
789 for (i = 0; i < FFMIN(planes, FF_ARRAY_ELEMS(frame->buf)); i++)
790 WRAP_PLANE(frame->buf[i], frame->extended_data[i], frame->linesize[0]);
792 for (i = 0; i < frame->nb_extended_buf; i++)
793 WRAP_PLANE(frame->extended_buf[i],
794 frame->extended_data[i + FF_ARRAY_ELEMS(frame->buf)],
798 av_buffer_unref(&dummy_buf);
800 frame->width = avctx->width;
801 frame->height = avctx->height;
806 avctx->release_buffer(avctx, frame);
808 av_buffer_unref(&dummy_buf);
813 ret = avctx->get_buffer2(avctx, frame, flags);
815 if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
816 frame->width = avctx->width;
817 frame->height = avctx->height;
823 int ff_get_buffer(AVCodecContext *avctx, AVFrame *frame, int flags)
825 int ret = get_buffer_internal(avctx, frame, flags);
827 av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
831 static int reget_buffer_internal(AVCodecContext *avctx, AVFrame *frame)
836 av_assert0(avctx->codec_type == AVMEDIA_TYPE_VIDEO);
838 if (frame->data[0] && (frame->width != avctx->width || frame->height != avctx->height || frame->format != avctx->pix_fmt)) {
839 av_log(avctx, AV_LOG_WARNING, "Picture changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s in reget buffer()\n",
840 frame->width, frame->height, av_get_pix_fmt_name(frame->format), avctx->width, avctx->height, av_get_pix_fmt_name(avctx->pix_fmt));
841 av_frame_unref(frame);
844 ff_init_buffer_info(avctx, frame);
847 return ff_get_buffer(avctx, frame, AV_GET_BUFFER_FLAG_REF);
849 if (av_frame_is_writable(frame))
852 av_frame_move_ref(&tmp, frame);
854 ret = ff_get_buffer(avctx, frame, AV_GET_BUFFER_FLAG_REF);
856 av_frame_unref(&tmp);
860 av_image_copy(frame->data, frame->linesize, tmp.data, tmp.linesize,
861 frame->format, frame->width, frame->height);
863 av_frame_unref(&tmp);
868 int ff_reget_buffer(AVCodecContext *avctx, AVFrame *frame)
870 int ret = reget_buffer_internal(avctx, frame);
872 av_log(avctx, AV_LOG_ERROR, "reget_buffer() failed\n");
876 #if FF_API_GET_BUFFER
877 void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic)
879 av_assert0(s->codec_type == AVMEDIA_TYPE_VIDEO);
884 int avcodec_default_reget_buffer(AVCodecContext *s, AVFrame *pic)
890 int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2), void *arg, int *ret, int count, int size)
894 for (i = 0; i < count; i++) {
895 int r = func(c, (char *)arg + i * size);
902 int avcodec_default_execute2(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2, int jobnr, int threadnr), void *arg, int *ret, int count)
906 for (i = 0; i < count; i++) {
907 int r = func(c, arg, i, 0);
914 static int is_hwaccel_pix_fmt(enum AVPixelFormat pix_fmt)
916 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
917 return desc->flags & PIX_FMT_HWACCEL;
920 enum AVPixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum AVPixelFormat *fmt)
922 while (*fmt != AV_PIX_FMT_NONE && is_hwaccel_pix_fmt(*fmt))
927 void avcodec_get_frame_defaults(AVFrame *frame)
929 #if LIBAVCODEC_VERSION_MAJOR >= 55
930 // extended_data should explicitly be freed when needed, this code is unsafe currently
931 // also this is not compatible to the <55 ABI/API
932 if (frame->extended_data != frame->data && 0)
933 av_freep(&frame->extended_data);
936 memset(frame, 0, sizeof(AVFrame));
940 frame->pkt_pts = AV_NOPTS_VALUE;
941 av_frame_set_best_effort_timestamp(frame, AV_NOPTS_VALUE);
942 av_frame_set_pkt_duration (frame, 0);
943 av_frame_set_pkt_pos (frame, -1);
944 av_frame_set_pkt_size (frame, -1);
945 frame->key_frame = 1;
946 frame->sample_aspect_ratio = (AVRational) {0, 1 };
947 frame->format = -1; /* unknown */
948 frame->extended_data = frame->data;
951 AVFrame *avcodec_alloc_frame(void)
953 AVFrame *frame = av_malloc(sizeof(AVFrame));
958 frame->extended_data = NULL;
959 avcodec_get_frame_defaults(frame);
964 void avcodec_free_frame(AVFrame **frame)
968 if (!frame || !*frame)
973 if (f->extended_data != f->data)
974 av_freep(&f->extended_data);
979 #define MAKE_ACCESSORS(str, name, type, field) \
980 type av_##name##_get_##field(const str *s) { return s->field; } \
981 void av_##name##_set_##field(str *s, type v) { s->field = v; }
983 MAKE_ACCESSORS(AVCodecContext, codec, AVRational, pkt_timebase)
984 MAKE_ACCESSORS(AVCodecContext, codec, const AVCodecDescriptor *, codec_descriptor)
986 static void avcodec_get_subtitle_defaults(AVSubtitle *sub)
988 memset(sub, 0, sizeof(*sub));
989 sub->pts = AV_NOPTS_VALUE;
992 static int get_bit_rate(AVCodecContext *ctx)
997 switch (ctx->codec_type) {
998 case AVMEDIA_TYPE_VIDEO:
999 case AVMEDIA_TYPE_DATA:
1000 case AVMEDIA_TYPE_SUBTITLE:
1001 case AVMEDIA_TYPE_ATTACHMENT:
1002 bit_rate = ctx->bit_rate;
1004 case AVMEDIA_TYPE_AUDIO:
1005 bits_per_sample = av_get_bits_per_sample(ctx->codec_id);
1006 bit_rate = bits_per_sample ? ctx->sample_rate * ctx->channels * bits_per_sample : ctx->bit_rate;
1015 #if FF_API_AVCODEC_OPEN
1016 int attribute_align_arg avcodec_open(AVCodecContext *avctx, AVCodec *codec)
1018 return avcodec_open2(avctx, codec, NULL);
1022 int attribute_align_arg ff_codec_open2_recursive(AVCodecContext *avctx, const AVCodec *codec, AVDictionary **options)
1026 ff_unlock_avcodec();
1028 ret = avcodec_open2(avctx, codec, options);
1030 ff_lock_avcodec(avctx);
1034 int attribute_align_arg avcodec_open2(AVCodecContext *avctx, const AVCodec *codec, AVDictionary **options)
1037 AVDictionary *tmp = NULL;
1039 if (avcodec_is_open(avctx))
1042 if ((!codec && !avctx->codec)) {
1043 av_log(avctx, AV_LOG_ERROR, "No codec provided to avcodec_open2()\n");
1044 return AVERROR(EINVAL);
1046 if ((codec && avctx->codec && codec != avctx->codec)) {
1047 av_log(avctx, AV_LOG_ERROR, "This AVCodecContext was allocated for %s, "
1048 "but %s passed to avcodec_open2()\n", avctx->codec->name, codec->name);
1049 return AVERROR(EINVAL);
1052 codec = avctx->codec;
1054 if (avctx->extradata_size < 0 || avctx->extradata_size >= FF_MAX_EXTRADATA_SIZE)
1055 return AVERROR(EINVAL);
1058 av_dict_copy(&tmp, *options, 0);
1060 ret = ff_lock_avcodec(avctx);
1064 avctx->internal = av_mallocz(sizeof(AVCodecInternal));
1065 if (!avctx->internal) {
1066 ret = AVERROR(ENOMEM);
1070 avctx->internal->pool = av_mallocz(sizeof(*avctx->internal->pool));
1071 if (!avctx->internal->pool) {
1072 ret = AVERROR(ENOMEM);
1076 if (codec->priv_data_size > 0) {
1077 if (!avctx->priv_data) {
1078 avctx->priv_data = av_mallocz(codec->priv_data_size);
1079 if (!avctx->priv_data) {
1080 ret = AVERROR(ENOMEM);
1083 if (codec->priv_class) {
1084 *(const AVClass **)avctx->priv_data = codec->priv_class;
1085 av_opt_set_defaults(avctx->priv_data);
1088 if (codec->priv_class && (ret = av_opt_set_dict(avctx->priv_data, &tmp)) < 0)
1091 avctx->priv_data = NULL;
1093 if ((ret = av_opt_set_dict(avctx, &tmp)) < 0)
1096 // only call avcodec_set_dimensions() for non H.264/VP6F codecs so as not to overwrite previously setup dimensions
1097 if (!(avctx->coded_width && avctx->coded_height && avctx->width && avctx->height &&
1098 (avctx->codec_id == AV_CODEC_ID_H264 || avctx->codec_id == AV_CODEC_ID_VP6F))) {
1099 if (avctx->coded_width && avctx->coded_height)
1100 avcodec_set_dimensions(avctx, avctx->coded_width, avctx->coded_height);
1101 else if (avctx->width && avctx->height)
1102 avcodec_set_dimensions(avctx, avctx->width, avctx->height);
1105 if ((avctx->coded_width || avctx->coded_height || avctx->width || avctx->height)
1106 && ( av_image_check_size(avctx->coded_width, avctx->coded_height, 0, avctx) < 0
1107 || av_image_check_size(avctx->width, avctx->height, 0, avctx) < 0)) {
1108 av_log(avctx, AV_LOG_WARNING, "Ignoring invalid width/height values\n");
1109 avcodec_set_dimensions(avctx, 0, 0);
1112 /* if the decoder init function was already called previously,
1113 * free the already allocated subtitle_header before overwriting it */
1114 if (av_codec_is_decoder(codec))
1115 av_freep(&avctx->subtitle_header);
1117 if (avctx->channels > FF_SANE_NB_CHANNELS) {
1118 ret = AVERROR(EINVAL);
1122 avctx->codec = codec;
1123 if ((avctx->codec_type == AVMEDIA_TYPE_UNKNOWN || avctx->codec_type == codec->type) &&
1124 avctx->codec_id == AV_CODEC_ID_NONE) {
1125 avctx->codec_type = codec->type;
1126 avctx->codec_id = codec->id;
1128 if (avctx->codec_id != codec->id || (avctx->codec_type != codec->type
1129 && avctx->codec_type != AVMEDIA_TYPE_ATTACHMENT)) {
1130 av_log(avctx, AV_LOG_ERROR, "Codec type or id mismatches\n");
1131 ret = AVERROR(EINVAL);
1134 avctx->frame_number = 0;
1135 avctx->codec_descriptor = avcodec_descriptor_get(avctx->codec_id);
1137 if (avctx->codec->capabilities & CODEC_CAP_EXPERIMENTAL &&
1138 avctx->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
1139 const char *codec_string = av_codec_is_encoder(codec) ? "encoder" : "decoder";
1141 av_log(avctx, AV_LOG_ERROR,
1142 "The %s '%s' is experimental but experimental codecs are not enabled, "
1143 "add '-strict %d' if you want to use it.\n",
1144 codec_string, codec->name, FF_COMPLIANCE_EXPERIMENTAL);
1145 codec2 = av_codec_is_encoder(codec) ? avcodec_find_encoder(codec->id) : avcodec_find_decoder(codec->id);
1146 if (!(codec2->capabilities & CODEC_CAP_EXPERIMENTAL))
1147 av_log(avctx, AV_LOG_ERROR, "Alternatively use the non experimental %s '%s'.\n",
1148 codec_string, codec2->name);
1149 ret = AVERROR_EXPERIMENTAL;
1153 if (avctx->codec_type == AVMEDIA_TYPE_AUDIO &&
1154 (!avctx->time_base.num || !avctx->time_base.den)) {
1155 avctx->time_base.num = 1;
1156 avctx->time_base.den = avctx->sample_rate;
1160 av_log(avctx, AV_LOG_WARNING, "Warning: not compiled with thread support, using thread emulation\n");
1162 if (CONFIG_FRAME_THREAD_ENCODER) {
1163 ff_unlock_avcodec(); //we will instanciate a few encoders thus kick the counter to prevent false detection of a problem
1164 ret = ff_frame_thread_encoder_init(avctx, options ? *options : NULL);
1165 ff_lock_avcodec(avctx);
1170 if (HAVE_THREADS && !avctx->thread_opaque
1171 && !(avctx->internal->frame_thread_encoder && (avctx->active_thread_type&FF_THREAD_FRAME))) {
1172 ret = ff_thread_init(avctx);
1177 if (!HAVE_THREADS && !(codec->capabilities & CODEC_CAP_AUTO_THREADS))
1178 avctx->thread_count = 1;
1180 if (avctx->codec->max_lowres < avctx->lowres || avctx->lowres < 0) {
1181 av_log(avctx, AV_LOG_ERROR, "The maximum value for lowres supported by the decoder is %d\n",
1182 avctx->codec->max_lowres);
1183 ret = AVERROR(EINVAL);
1187 if (av_codec_is_encoder(avctx->codec)) {
1189 if (avctx->codec->sample_fmts) {
1190 for (i = 0; avctx->codec->sample_fmts[i] != AV_SAMPLE_FMT_NONE; i++) {
1191 if (avctx->sample_fmt == avctx->codec->sample_fmts[i])
1193 if (avctx->channels == 1 &&
1194 av_get_planar_sample_fmt(avctx->sample_fmt) ==
1195 av_get_planar_sample_fmt(avctx->codec->sample_fmts[i])) {
1196 avctx->sample_fmt = avctx->codec->sample_fmts[i];
1200 if (avctx->codec->sample_fmts[i] == AV_SAMPLE_FMT_NONE) {
1202 snprintf(buf, sizeof(buf), "%d", avctx->sample_fmt);
1203 av_log(avctx, AV_LOG_ERROR, "Specified sample format %s is invalid or not supported\n",
1204 (char *)av_x_if_null(av_get_sample_fmt_name(avctx->sample_fmt), buf));
1205 ret = AVERROR(EINVAL);
1209 if (avctx->codec->pix_fmts) {
1210 for (i = 0; avctx->codec->pix_fmts[i] != AV_PIX_FMT_NONE; i++)
1211 if (avctx->pix_fmt == avctx->codec->pix_fmts[i])
1213 if (avctx->codec->pix_fmts[i] == AV_PIX_FMT_NONE
1214 && !((avctx->codec_id == AV_CODEC_ID_MJPEG || avctx->codec_id == AV_CODEC_ID_LJPEG)
1215 && avctx->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL)) {
1217 snprintf(buf, sizeof(buf), "%d", avctx->pix_fmt);
1218 av_log(avctx, AV_LOG_ERROR, "Specified pixel format %s is invalid or not supported\n",
1219 (char *)av_x_if_null(av_get_pix_fmt_name(avctx->pix_fmt), buf));
1220 ret = AVERROR(EINVAL);
1224 if (avctx->codec->supported_samplerates) {
1225 for (i = 0; avctx->codec->supported_samplerates[i] != 0; i++)
1226 if (avctx->sample_rate == avctx->codec->supported_samplerates[i])
1228 if (avctx->codec->supported_samplerates[i] == 0) {
1229 av_log(avctx, AV_LOG_ERROR, "Specified sample rate %d is not supported\n",
1230 avctx->sample_rate);
1231 ret = AVERROR(EINVAL);
1235 if (avctx->codec->channel_layouts) {
1236 if (!avctx->channel_layout) {
1237 av_log(avctx, AV_LOG_WARNING, "Channel layout not specified\n");
1239 for (i = 0; avctx->codec->channel_layouts[i] != 0; i++)
1240 if (avctx->channel_layout == avctx->codec->channel_layouts[i])
1242 if (avctx->codec->channel_layouts[i] == 0) {
1244 av_get_channel_layout_string(buf, sizeof(buf), -1, avctx->channel_layout);
1245 av_log(avctx, AV_LOG_ERROR, "Specified channel layout '%s' is not supported\n", buf);
1246 ret = AVERROR(EINVAL);
1251 if (avctx->channel_layout && avctx->channels) {
1252 int channels = av_get_channel_layout_nb_channels(avctx->channel_layout);
1253 if (channels != avctx->channels) {
1255 av_get_channel_layout_string(buf, sizeof(buf), -1, avctx->channel_layout);
1256 av_log(avctx, AV_LOG_ERROR,
1257 "Channel layout '%s' with %d channels does not match number of specified channels %d\n",
1258 buf, channels, avctx->channels);
1259 ret = AVERROR(EINVAL);
1262 } else if (avctx->channel_layout) {
1263 avctx->channels = av_get_channel_layout_nb_channels(avctx->channel_layout);
1265 if(avctx->codec_type == AVMEDIA_TYPE_VIDEO &&
1266 avctx->codec_id != AV_CODEC_ID_PNG // For mplayer
1268 if (avctx->width <= 0 || avctx->height <= 0) {
1269 av_log(avctx, AV_LOG_ERROR, "dimensions not set\n");
1270 ret = AVERROR(EINVAL);
1274 if ( (avctx->codec_type == AVMEDIA_TYPE_VIDEO || avctx->codec_type == AVMEDIA_TYPE_AUDIO)
1275 && avctx->bit_rate>0 && avctx->bit_rate<1000) {
1276 av_log(avctx, AV_LOG_WARNING, "Bitrate %d is extremely low, maybe you mean %dk\n", avctx->bit_rate, avctx->bit_rate);
1279 if (!avctx->rc_initial_buffer_occupancy)
1280 avctx->rc_initial_buffer_occupancy = avctx->rc_buffer_size * 3 / 4;
1283 avctx->pts_correction_num_faulty_pts =
1284 avctx->pts_correction_num_faulty_dts = 0;
1285 avctx->pts_correction_last_pts =
1286 avctx->pts_correction_last_dts = INT64_MIN;
1288 if ( avctx->codec->init && (!(avctx->active_thread_type&FF_THREAD_FRAME)
1289 || avctx->internal->frame_thread_encoder)) {
1290 ret = avctx->codec->init(avctx);
1298 if (av_codec_is_decoder(avctx->codec)) {
1299 if (!avctx->bit_rate)
1300 avctx->bit_rate = get_bit_rate(avctx);
1301 /* validate channel layout from the decoder */
1302 if (avctx->channel_layout) {
1303 int channels = av_get_channel_layout_nb_channels(avctx->channel_layout);
1304 if (!avctx->channels)
1305 avctx->channels = channels;
1306 else if (channels != avctx->channels) {
1308 av_get_channel_layout_string(buf, sizeof(buf), -1, avctx->channel_layout);
1309 av_log(avctx, AV_LOG_WARNING,
1310 "Channel layout '%s' with %d channels does not match specified number of channels %d: "
1311 "ignoring specified channel layout\n",
1312 buf, channels, avctx->channels);
1313 avctx->channel_layout = 0;
1316 if (avctx->channels && avctx->channels < 0 ||
1317 avctx->channels > FF_SANE_NB_CHANNELS) {
1318 ret = AVERROR(EINVAL);
1321 if (avctx->sub_charenc) {
1322 if (avctx->codec_type != AVMEDIA_TYPE_SUBTITLE) {
1323 av_log(avctx, AV_LOG_ERROR, "Character encoding is only "
1324 "supported with subtitles codecs\n");
1325 ret = AVERROR(EINVAL);
1327 } else if (avctx->codec_descriptor->props & AV_CODEC_PROP_BITMAP_SUB) {
1328 av_log(avctx, AV_LOG_WARNING, "Codec '%s' is bitmap-based, "
1329 "subtitles character encoding will be ignored\n",
1330 avctx->codec_descriptor->name);
1331 avctx->sub_charenc_mode = FF_SUB_CHARENC_MODE_DO_NOTHING;
1333 /* input character encoding is set for a text based subtitle
1334 * codec at this point */
1335 if (avctx->sub_charenc_mode == FF_SUB_CHARENC_MODE_AUTOMATIC)
1336 avctx->sub_charenc_mode = FF_SUB_CHARENC_MODE_PRE_DECODER;
1338 if (avctx->sub_charenc_mode == FF_SUB_CHARENC_MODE_PRE_DECODER) {
1340 iconv_t cd = iconv_open("UTF-8", avctx->sub_charenc);
1341 if (cd == (iconv_t)-1) {
1342 av_log(avctx, AV_LOG_ERROR, "Unable to open iconv context "
1343 "with input character encoding \"%s\"\n", avctx->sub_charenc);
1344 ret = AVERROR(errno);
1349 av_log(avctx, AV_LOG_ERROR, "Character encoding subtitles "
1350 "conversion needs a libavcodec built with iconv support "
1351 "for this codec\n");
1352 ret = AVERROR(ENOSYS);
1360 ff_unlock_avcodec();
1362 av_dict_free(options);
1369 av_freep(&avctx->priv_data);
1370 if (avctx->internal)
1371 av_freep(&avctx->internal->pool);
1372 av_freep(&avctx->internal);
1373 avctx->codec = NULL;
1377 int ff_alloc_packet2(AVCodecContext *avctx, AVPacket *avpkt, int size)
1379 if (size < 0 || avpkt->size < 0 || size > INT_MAX - FF_INPUT_BUFFER_PADDING_SIZE) {
1380 av_log(avctx, AV_LOG_ERROR, "Size %d invalid\n", size);
1381 return AVERROR(EINVAL);
1385 av_assert0(!avpkt->data || avpkt->data != avctx->internal->byte_buffer);
1386 if (!avpkt->data || avpkt->size < size) {
1387 av_fast_padded_malloc(&avctx->internal->byte_buffer, &avctx->internal->byte_buffer_size, size);
1388 avpkt->data = avctx->internal->byte_buffer;
1389 avpkt->size = avctx->internal->byte_buffer_size;
1390 avpkt->destruct = NULL;
1395 AVBufferRef *buf = avpkt->buf;
1396 #if FF_API_DESTRUCT_PACKET
1397 void *destruct = avpkt->destruct;
1400 if (avpkt->size < size) {
1401 av_log(avctx, AV_LOG_ERROR, "User packet is too small (%d < %d)\n", avpkt->size, size);
1402 return AVERROR(EINVAL);
1405 av_init_packet(avpkt);
1406 #if FF_API_DESTRUCT_PACKET
1407 avpkt->destruct = destruct;
1413 int ret = av_new_packet(avpkt, size);
1415 av_log(avctx, AV_LOG_ERROR, "Failed to allocate packet of size %d\n", size);
1420 int ff_alloc_packet(AVPacket *avpkt, int size)
1422 return ff_alloc_packet2(NULL, avpkt, size);
1426 * Pad last frame with silence.
1428 static int pad_last_frame(AVCodecContext *s, AVFrame **dst, const AVFrame *src)
1430 AVFrame *frame = NULL;
1431 uint8_t *buf = NULL;
1434 if (!(frame = avcodec_alloc_frame()))
1435 return AVERROR(ENOMEM);
1438 if ((ret = av_samples_get_buffer_size(&frame->linesize[0], s->channels,
1439 s->frame_size, s->sample_fmt, 0)) < 0)
1442 if (!(buf = av_malloc(ret))) {
1443 ret = AVERROR(ENOMEM);
1447 frame->nb_samples = s->frame_size;
1448 if ((ret = avcodec_fill_audio_frame(frame, s->channels, s->sample_fmt,
1451 if ((ret = av_samples_copy(frame->extended_data, src->extended_data, 0, 0,
1452 src->nb_samples, s->channels, s->sample_fmt)) < 0)
1454 if ((ret = av_samples_set_silence(frame->extended_data, src->nb_samples,
1455 frame->nb_samples - src->nb_samples,
1456 s->channels, s->sample_fmt)) < 0)
1464 if (frame->extended_data != frame->data)
1465 av_freep(&frame->extended_data);
1471 int attribute_align_arg avcodec_encode_audio2(AVCodecContext *avctx,
1473 const AVFrame *frame,
1474 int *got_packet_ptr)
1477 AVFrame *padded_frame = NULL;
1479 AVPacket user_pkt = *avpkt;
1480 int needs_realloc = !user_pkt.data;
1482 *got_packet_ptr = 0;
1484 if (!(avctx->codec->capabilities & CODEC_CAP_DELAY) && !frame) {
1485 av_free_packet(avpkt);
1486 av_init_packet(avpkt);
1490 /* ensure that extended_data is properly set */
1491 if (frame && !frame->extended_data) {
1492 if (av_sample_fmt_is_planar(avctx->sample_fmt) &&
1493 avctx->channels > AV_NUM_DATA_POINTERS) {
1494 av_log(avctx, AV_LOG_ERROR, "Encoding to a planar sample format, "
1495 "with more than %d channels, but extended_data is not set.\n",
1496 AV_NUM_DATA_POINTERS);
1497 return AVERROR(EINVAL);
1499 av_log(avctx, AV_LOG_WARNING, "extended_data is not set.\n");
1502 tmp.extended_data = tmp.data;
1506 /* check for valid frame size */
1508 if (avctx->codec->capabilities & CODEC_CAP_SMALL_LAST_FRAME) {
1509 if (frame->nb_samples > avctx->frame_size) {
1510 av_log(avctx, AV_LOG_ERROR, "more samples than frame size (avcodec_encode_audio2)\n");
1511 return AVERROR(EINVAL);
1513 } else if (!(avctx->codec->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE)) {
1514 if (frame->nb_samples < avctx->frame_size &&
1515 !avctx->internal->last_audio_frame) {
1516 ret = pad_last_frame(avctx, &padded_frame, frame);
1520 frame = padded_frame;
1521 avctx->internal->last_audio_frame = 1;
1524 if (frame->nb_samples != avctx->frame_size) {
1525 av_log(avctx, AV_LOG_ERROR, "nb_samples (%d) != frame_size (%d) (avcodec_encode_audio2)\n", frame->nb_samples, avctx->frame_size);
1526 ret = AVERROR(EINVAL);
1532 ret = avctx->codec->encode2(avctx, avpkt, frame, got_packet_ptr);
1534 if (*got_packet_ptr) {
1535 if (!(avctx->codec->capabilities & CODEC_CAP_DELAY)) {
1536 if (avpkt->pts == AV_NOPTS_VALUE)
1537 avpkt->pts = frame->pts;
1538 if (!avpkt->duration)
1539 avpkt->duration = ff_samples_to_time_base(avctx,
1542 avpkt->dts = avpkt->pts;
1547 if (avpkt->data && avpkt->data == avctx->internal->byte_buffer) {
1549 if (user_pkt.data) {
1550 if (user_pkt.size >= avpkt->size) {
1551 memcpy(user_pkt.data, avpkt->data, avpkt->size);
1553 av_log(avctx, AV_LOG_ERROR, "Provided packet is too small, needs to be %d\n", avpkt->size);
1554 avpkt->size = user_pkt.size;
1557 avpkt->buf = user_pkt.buf;
1558 avpkt->data = user_pkt.data;
1559 avpkt->destruct = user_pkt.destruct;
1561 if (av_dup_packet(avpkt) < 0) {
1562 ret = AVERROR(ENOMEM);
1568 if (needs_realloc && avpkt->data) {
1569 ret = av_buffer_realloc(&avpkt->buf, avpkt->size + FF_INPUT_BUFFER_PADDING_SIZE);
1571 avpkt->data = avpkt->buf->data;
1574 avctx->frame_number++;
1577 if (ret < 0 || !*got_packet_ptr) {
1578 av_free_packet(avpkt);
1579 av_init_packet(avpkt);
1583 /* NOTE: if we add any audio encoders which output non-keyframe packets,
1584 * this needs to be moved to the encoders, but for now we can do it
1585 * here to simplify things */
1586 avpkt->flags |= AV_PKT_FLAG_KEY;
1590 av_freep(&padded_frame->data[0]);
1591 if (padded_frame->extended_data != padded_frame->data)
1592 av_freep(&padded_frame->extended_data);
1593 av_freep(&padded_frame);
1599 #if FF_API_OLD_ENCODE_AUDIO
1600 int attribute_align_arg avcodec_encode_audio(AVCodecContext *avctx,
1601 uint8_t *buf, int buf_size,
1602 const short *samples)
1605 AVFrame frame0 = { { 0 } };
1607 int ret, samples_size, got_packet;
1609 av_init_packet(&pkt);
1611 pkt.size = buf_size;
1615 avcodec_get_frame_defaults(frame);
1617 if (avctx->frame_size) {
1618 frame->nb_samples = avctx->frame_size;
1620 /* if frame_size is not set, the number of samples must be
1621 * calculated from the buffer size */
1623 if (!av_get_bits_per_sample(avctx->codec_id)) {
1624 av_log(avctx, AV_LOG_ERROR, "avcodec_encode_audio() does not "
1625 "support this codec\n");
1626 return AVERROR(EINVAL);
1628 nb_samples = (int64_t)buf_size * 8 /
1629 (av_get_bits_per_sample(avctx->codec_id) *
1631 if (nb_samples >= INT_MAX)
1632 return AVERROR(EINVAL);
1633 frame->nb_samples = nb_samples;
1636 /* it is assumed that the samples buffer is large enough based on the
1637 * relevant parameters */
1638 samples_size = av_samples_get_buffer_size(NULL, avctx->channels,
1640 avctx->sample_fmt, 1);
1641 if ((ret = avcodec_fill_audio_frame(frame, avctx->channels,
1643 (const uint8_t *)samples,
1644 samples_size, 1)) < 0)
1647 /* fabricate frame pts from sample count.
1648 * this is needed because the avcodec_encode_audio() API does not have
1649 * a way for the user to provide pts */
1650 if (avctx->sample_rate && avctx->time_base.num)
1651 frame->pts = ff_samples_to_time_base(avctx,
1652 avctx->internal->sample_count);
1654 frame->pts = AV_NOPTS_VALUE;
1655 avctx->internal->sample_count += frame->nb_samples;
1661 ret = avcodec_encode_audio2(avctx, &pkt, frame, &got_packet);
1662 if (!ret && got_packet && avctx->coded_frame) {
1663 avctx->coded_frame->pts = pkt.pts;
1664 avctx->coded_frame->key_frame = !!(pkt.flags & AV_PKT_FLAG_KEY);
1666 /* free any side data since we cannot return it */
1667 ff_packet_free_side_data(&pkt);
1669 if (frame && frame->extended_data != frame->data)
1670 av_freep(&frame->extended_data);
1672 return ret ? ret : pkt.size;
1677 #if FF_API_OLD_ENCODE_VIDEO
1678 int attribute_align_arg avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size,
1679 const AVFrame *pict)
1682 int ret, got_packet = 0;
1684 if (buf_size < FF_MIN_BUFFER_SIZE) {
1685 av_log(avctx, AV_LOG_ERROR, "buffer smaller than minimum size\n");
1689 av_init_packet(&pkt);
1691 pkt.size = buf_size;
1693 ret = avcodec_encode_video2(avctx, &pkt, pict, &got_packet);
1694 if (!ret && got_packet && avctx->coded_frame) {
1695 avctx->coded_frame->pts = pkt.pts;
1696 avctx->coded_frame->key_frame = !!(pkt.flags & AV_PKT_FLAG_KEY);
1699 /* free any side data since we cannot return it */
1700 if (pkt.side_data_elems > 0) {
1702 for (i = 0; i < pkt.side_data_elems; i++)
1703 av_free(pkt.side_data[i].data);
1704 av_freep(&pkt.side_data);
1705 pkt.side_data_elems = 0;
1708 return ret ? ret : pkt.size;
1713 int attribute_align_arg avcodec_encode_video2(AVCodecContext *avctx,
1715 const AVFrame *frame,
1716 int *got_packet_ptr)
1719 AVPacket user_pkt = *avpkt;
1720 int needs_realloc = !user_pkt.data;
1722 *got_packet_ptr = 0;
1724 if(CONFIG_FRAME_THREAD_ENCODER &&
1725 avctx->internal->frame_thread_encoder && (avctx->active_thread_type&FF_THREAD_FRAME))
1726 return ff_thread_video_encode_frame(avctx, avpkt, frame, got_packet_ptr);
1728 if ((avctx->flags&CODEC_FLAG_PASS1) && avctx->stats_out)
1729 avctx->stats_out[0] = '\0';
1731 if (!(avctx->codec->capabilities & CODEC_CAP_DELAY) && !frame) {
1732 av_free_packet(avpkt);
1733 av_init_packet(avpkt);
1738 if (av_image_check_size(avctx->width, avctx->height, 0, avctx))
1739 return AVERROR(EINVAL);
1741 av_assert0(avctx->codec->encode2);
1743 ret = avctx->codec->encode2(avctx, avpkt, frame, got_packet_ptr);
1744 av_assert0(ret <= 0);
1746 if (avpkt->data && avpkt->data == avctx->internal->byte_buffer) {
1748 if (user_pkt.data) {
1749 if (user_pkt.size >= avpkt->size) {
1750 memcpy(user_pkt.data, avpkt->data, avpkt->size);
1752 av_log(avctx, AV_LOG_ERROR, "Provided packet is too small, needs to be %d\n", avpkt->size);
1753 avpkt->size = user_pkt.size;
1756 avpkt->buf = user_pkt.buf;
1757 avpkt->data = user_pkt.data;
1758 avpkt->destruct = user_pkt.destruct;
1760 if (av_dup_packet(avpkt) < 0) {
1761 ret = AVERROR(ENOMEM);
1767 if (!*got_packet_ptr)
1769 else if (!(avctx->codec->capabilities & CODEC_CAP_DELAY))
1770 avpkt->pts = avpkt->dts = frame->pts;
1772 if (needs_realloc && avpkt->data) {
1773 ret = av_buffer_realloc(&avpkt->buf, avpkt->size + FF_INPUT_BUFFER_PADDING_SIZE);
1775 avpkt->data = avpkt->buf->data;
1778 avctx->frame_number++;
1781 if (ret < 0 || !*got_packet_ptr)
1782 av_free_packet(avpkt);
1784 av_packet_merge_side_data(avpkt);
1790 int avcodec_encode_subtitle(AVCodecContext *avctx, uint8_t *buf, int buf_size,
1791 const AVSubtitle *sub)
1794 if (sub->start_display_time) {
1795 av_log(avctx, AV_LOG_ERROR, "start_display_time must be 0.\n");
1799 ret = avctx->codec->encode_sub(avctx, buf, buf_size, sub);
1800 avctx->frame_number++;
1805 * Attempt to guess proper monotonic timestamps for decoded video frames
1806 * which might have incorrect times. Input timestamps may wrap around, in
1807 * which case the output will as well.
1809 * @param pts the pts field of the decoded AVPacket, as passed through
1811 * @param dts the dts field of the decoded AVPacket
1812 * @return one of the input values, may be AV_NOPTS_VALUE
1814 static int64_t guess_correct_pts(AVCodecContext *ctx,
1815 int64_t reordered_pts, int64_t dts)
1817 int64_t pts = AV_NOPTS_VALUE;
1819 if (dts != AV_NOPTS_VALUE) {
1820 ctx->pts_correction_num_faulty_dts += dts <= ctx->pts_correction_last_dts;
1821 ctx->pts_correction_last_dts = dts;
1823 if (reordered_pts != AV_NOPTS_VALUE) {
1824 ctx->pts_correction_num_faulty_pts += reordered_pts <= ctx->pts_correction_last_pts;
1825 ctx->pts_correction_last_pts = reordered_pts;
1827 if ((ctx->pts_correction_num_faulty_pts<=ctx->pts_correction_num_faulty_dts || dts == AV_NOPTS_VALUE)
1828 && reordered_pts != AV_NOPTS_VALUE)
1829 pts = reordered_pts;
1836 static void apply_param_change(AVCodecContext *avctx, AVPacket *avpkt)
1839 const uint8_t *data;
1842 if (!(avctx->codec->capabilities & CODEC_CAP_PARAM_CHANGE))
1845 data = av_packet_get_side_data(avpkt, AV_PKT_DATA_PARAM_CHANGE, &size);
1846 if (!data || size < 4)
1848 flags = bytestream_get_le32(&data);
1850 if (size < 4) /* Required for any of the changes */
1852 if (flags & AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_COUNT) {
1853 avctx->channels = bytestream_get_le32(&data);
1856 if (flags & AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_LAYOUT) {
1859 avctx->channel_layout = bytestream_get_le64(&data);
1864 if (flags & AV_SIDE_DATA_PARAM_CHANGE_SAMPLE_RATE) {
1865 avctx->sample_rate = bytestream_get_le32(&data);
1868 if (flags & AV_SIDE_DATA_PARAM_CHANGE_DIMENSIONS) {
1871 avctx->width = bytestream_get_le32(&data);
1872 avctx->height = bytestream_get_le32(&data);
1873 avcodec_set_dimensions(avctx, avctx->width, avctx->height);
1878 static int add_metadata_from_side_data(AVCodecContext *avctx, AVFrame *frame)
1881 const uint8_t *side_metadata;
1884 side_metadata = av_packet_get_side_data(avctx->pkt,
1885 AV_PKT_DATA_STRINGS_METADATA, &size);
1888 end = side_metadata + size;
1889 while (side_metadata < end) {
1890 const uint8_t *key = side_metadata;
1891 const uint8_t *val = side_metadata + strlen(key) + 1;
1892 int ret = av_dict_set(avpriv_frame_get_metadatap(frame), key, val, 0);
1895 side_metadata = val + strlen(val) + 1;
1901 int attribute_align_arg avcodec_decode_video2(AVCodecContext *avctx, AVFrame *picture,
1902 int *got_picture_ptr,
1903 const AVPacket *avpkt)
1905 AVCodecInternal *avci = avctx->internal;
1907 // copy to ensure we do not change avpkt
1908 AVPacket tmp = *avpkt;
1910 if (avctx->codec->type != AVMEDIA_TYPE_VIDEO) {
1911 av_log(avctx, AV_LOG_ERROR, "Invalid media type for video\n");
1912 return AVERROR(EINVAL);
1915 *got_picture_ptr = 0;
1916 if ((avctx->coded_width || avctx->coded_height) && av_image_check_size(avctx->coded_width, avctx->coded_height, 0, avctx))
1917 return AVERROR(EINVAL);
1919 avcodec_get_frame_defaults(picture);
1921 if (!avctx->refcounted_frames)
1922 av_frame_unref(&avci->to_free);
1924 if ((avctx->codec->capabilities & CODEC_CAP_DELAY) || avpkt->size || (avctx->active_thread_type & FF_THREAD_FRAME)) {
1925 int did_split = av_packet_split_side_data(&tmp);
1926 apply_param_change(avctx, &tmp);
1928 if (HAVE_THREADS && avctx->active_thread_type & FF_THREAD_FRAME)
1929 ret = ff_thread_decode_frame(avctx, picture, got_picture_ptr,
1932 ret = avctx->codec->decode(avctx, picture, got_picture_ptr,
1934 picture->pkt_dts = avpkt->dts;
1936 if(!avctx->has_b_frames){
1937 av_frame_set_pkt_pos(picture, avpkt->pos);
1939 //FIXME these should be under if(!avctx->has_b_frames)
1940 /* get_buffer is supposed to set frame parameters */
1941 if (!(avctx->codec->capabilities & CODEC_CAP_DR1)) {
1942 if (!picture->sample_aspect_ratio.num) picture->sample_aspect_ratio = avctx->sample_aspect_ratio;
1943 if (!picture->width) picture->width = avctx->width;
1944 if (!picture->height) picture->height = avctx->height;
1945 if (picture->format == AV_PIX_FMT_NONE) picture->format = avctx->pix_fmt;
1948 add_metadata_from_side_data(avctx, picture);
1950 emms_c(); //needed to avoid an emms_c() call before every return;
1954 ff_packet_free_side_data(&tmp);
1959 if (ret < 0 && picture->data[0])
1960 av_frame_unref(picture);
1962 if (*got_picture_ptr) {
1963 if (!avctx->refcounted_frames) {
1964 avci->to_free = *picture;
1965 avci->to_free.extended_data = avci->to_free.data;
1968 avctx->frame_number++;
1969 av_frame_set_best_effort_timestamp(picture,
1970 guess_correct_pts(avctx,
1977 /* many decoders assign whole AVFrames, thus overwriting extended_data;
1978 * make sure it's set correctly */
1979 picture->extended_data = picture->data;
1984 #if FF_API_OLD_DECODE_AUDIO
1985 int attribute_align_arg avcodec_decode_audio3(AVCodecContext *avctx, int16_t *samples,
1986 int *frame_size_ptr,
1989 AVFrame frame = { { 0 } };
1990 int ret, got_frame = 0;
1992 if (avctx->get_buffer != avcodec_default_get_buffer) {
1993 av_log(avctx, AV_LOG_ERROR, "Custom get_buffer() for use with"
1994 "avcodec_decode_audio3() detected. Overriding with avcodec_default_get_buffer\n");
1995 av_log(avctx, AV_LOG_ERROR, "Please port your application to "
1996 "avcodec_decode_audio4()\n");
1997 avctx->get_buffer = avcodec_default_get_buffer;
1998 avctx->release_buffer = avcodec_default_release_buffer;
2001 ret = avcodec_decode_audio4(avctx, &frame, &got_frame, avpkt);
2003 if (ret >= 0 && got_frame) {
2005 int planar = av_sample_fmt_is_planar(avctx->sample_fmt);
2006 int data_size = av_samples_get_buffer_size(&plane_size, avctx->channels,
2008 avctx->sample_fmt, 1);
2009 if (*frame_size_ptr < data_size) {
2010 av_log(avctx, AV_LOG_ERROR, "output buffer size is too small for "
2011 "the current frame (%d < %d)\n", *frame_size_ptr, data_size);
2012 return AVERROR(EINVAL);
2015 memcpy(samples, frame.extended_data[0], plane_size);
2017 if (planar && avctx->channels > 1) {
2018 uint8_t *out = ((uint8_t *)samples) + plane_size;
2019 for (ch = 1; ch < avctx->channels; ch++) {
2020 memcpy(out, frame.extended_data[ch], plane_size);
2024 *frame_size_ptr = data_size;
2026 *frame_size_ptr = 0;
2033 int attribute_align_arg avcodec_decode_audio4(AVCodecContext *avctx,
2036 const AVPacket *avpkt)
2038 AVCodecInternal *avci = avctx->internal;
2039 int planar, channels;
2044 if (!avpkt->data && avpkt->size) {
2045 av_log(avctx, AV_LOG_ERROR, "invalid packet: NULL data, size != 0\n");
2046 return AVERROR(EINVAL);
2048 if (avctx->codec->type != AVMEDIA_TYPE_AUDIO) {
2049 av_log(avctx, AV_LOG_ERROR, "Invalid media type for audio\n");
2050 return AVERROR(EINVAL);
2053 avcodec_get_frame_defaults(frame);
2055 if (!avctx->refcounted_frames)
2056 av_frame_unref(&avci->to_free);
2058 if ((avctx->codec->capabilities & CODEC_CAP_DELAY) || avpkt->size) {
2061 // copy to ensure we do not change avpkt
2062 AVPacket tmp = *avpkt;
2063 int did_split = av_packet_split_side_data(&tmp);
2064 apply_param_change(avctx, &tmp);
2067 ret = avctx->codec->decode(avctx, frame, got_frame_ptr, &tmp);
2068 if (ret >= 0 && *got_frame_ptr) {
2069 add_metadata_from_side_data(avctx, frame);
2070 avctx->frame_number++;
2071 frame->pkt_dts = avpkt->dts;
2072 av_frame_set_best_effort_timestamp(frame,
2073 guess_correct_pts(avctx,
2076 if (frame->format == AV_SAMPLE_FMT_NONE)
2077 frame->format = avctx->sample_fmt;
2078 if (!frame->channel_layout)
2079 frame->channel_layout = avctx->channel_layout;
2080 if (!av_frame_get_channels(frame))
2081 av_frame_set_channels(frame, avctx->channels);
2082 if (!frame->sample_rate)
2083 frame->sample_rate = avctx->sample_rate;
2084 if (!avctx->refcounted_frames) {
2085 avci->to_free = *frame;
2086 avci->to_free.extended_data = avci->to_free.data;
2090 side= av_packet_get_side_data(avctx->pkt, AV_PKT_DATA_SKIP_SAMPLES, &side_size);
2091 if(side && side_size>=10) {
2092 avctx->internal->skip_samples = AV_RL32(side);
2093 av_log(avctx, AV_LOG_DEBUG, "skip %d samples due to side data\n",
2094 avctx->internal->skip_samples);
2096 if (avctx->internal->skip_samples && *got_frame_ptr) {
2097 if(frame->nb_samples <= avctx->internal->skip_samples){
2099 avctx->internal->skip_samples -= frame->nb_samples;
2100 av_log(avctx, AV_LOG_DEBUG, "skip whole frame, skip left: %d\n",
2101 avctx->internal->skip_samples);
2103 av_samples_copy(frame->extended_data, frame->extended_data, 0, avctx->internal->skip_samples,
2104 frame->nb_samples - avctx->internal->skip_samples, avctx->channels, frame->format);
2105 if(avctx->pkt_timebase.num && avctx->sample_rate) {
2106 int64_t diff_ts = av_rescale_q(avctx->internal->skip_samples,
2107 (AVRational){1, avctx->sample_rate},
2108 avctx->pkt_timebase);
2109 if(frame->pkt_pts!=AV_NOPTS_VALUE)
2110 frame->pkt_pts += diff_ts;
2111 if(frame->pkt_dts!=AV_NOPTS_VALUE)
2112 frame->pkt_dts += diff_ts;
2113 if (av_frame_get_pkt_duration(frame) >= diff_ts)
2114 av_frame_set_pkt_duration(frame, av_frame_get_pkt_duration(frame) - diff_ts);
2116 av_log(avctx, AV_LOG_WARNING, "Could not update timestamps for skipped samples.\n");
2118 av_log(avctx, AV_LOG_DEBUG, "skip %d/%d samples\n",
2119 avctx->internal->skip_samples, frame->nb_samples);
2120 frame->nb_samples -= avctx->internal->skip_samples;
2121 avctx->internal->skip_samples = 0;
2127 ff_packet_free_side_data(&tmp);
2132 if (ret < 0 && frame->data[0])
2133 av_frame_unref(frame);
2136 /* many decoders assign whole AVFrames, thus overwriting extended_data;
2137 * make sure it's set correctly; assume decoders that actually use
2138 * extended_data are doing it correctly */
2139 if (*got_frame_ptr) {
2140 planar = av_sample_fmt_is_planar(frame->format);
2141 channels = av_frame_get_channels(frame);
2142 if (!(planar && channels > AV_NUM_DATA_POINTERS))
2143 frame->extended_data = frame->data;
2145 frame->extended_data = NULL;
2151 #define UTF8_MAX_BYTES 4 /* 5 and 6 bytes sequences should not be used */
2152 static int recode_subtitle(AVCodecContext *avctx,
2153 AVPacket *outpkt, const AVPacket *inpkt)
2156 iconv_t cd = (iconv_t)-1;
2163 if (avctx->sub_charenc_mode != FF_SUB_CHARENC_MODE_PRE_DECODER)
2167 cd = iconv_open("UTF-8", avctx->sub_charenc);
2168 av_assert0(cd != (iconv_t)-1);
2173 if (inl >= INT_MAX / UTF8_MAX_BYTES - FF_INPUT_BUFFER_PADDING_SIZE) {
2174 av_log(avctx, AV_LOG_ERROR, "Subtitles packet is too big for recoding\n");
2175 ret = AVERROR(ENOMEM);
2179 ret = av_new_packet(&tmp, inl * UTF8_MAX_BYTES);
2182 outpkt->buf = tmp.buf;
2183 outpkt->data = tmp.data;
2184 outpkt->size = tmp.size;
2185 outb = outpkt->data;
2186 outl = outpkt->size;
2188 if (iconv(cd, &inb, &inl, &outb, &outl) == (size_t)-1 ||
2189 iconv(cd, NULL, NULL, &outb, &outl) == (size_t)-1 ||
2190 outl >= outpkt->size || inl != 0) {
2191 av_log(avctx, AV_LOG_ERROR, "Unable to recode subtitle event \"%s\" "
2192 "from %s to UTF-8\n", inpkt->data, avctx->sub_charenc);
2193 av_free_packet(&tmp);
2194 ret = AVERROR(errno);
2197 outpkt->size -= outl;
2198 memset(outpkt->data + outpkt->size, 0, outl);
2201 if (cd != (iconv_t)-1)
2205 av_assert0(!"requesting subtitles recoding without iconv");
2209 static int utf8_check(const uint8_t *str)
2211 const uint8_t *byte;
2212 uint32_t codepoint, min;
2216 GET_UTF8(codepoint, *(byte++), return 0;);
2217 min = byte - str == 1 ? 0 : byte - str == 2 ? 0x80 :
2218 1 << (5 * (byte - str) - 4);
2219 if (codepoint < min || codepoint >= 0x110000 ||
2220 codepoint == 0xFFFE /* BOM */ ||
2221 codepoint >= 0xD800 && codepoint <= 0xDFFF /* surrogates */)
2228 int avcodec_decode_subtitle2(AVCodecContext *avctx, AVSubtitle *sub,
2234 if (avctx->codec->type != AVMEDIA_TYPE_SUBTITLE) {
2235 av_log(avctx, AV_LOG_ERROR, "Invalid media type for subtitles\n");
2236 return AVERROR(EINVAL);
2240 avcodec_get_subtitle_defaults(sub);
2243 AVPacket pkt_recoded;
2244 AVPacket tmp = *avpkt;
2245 int did_split = av_packet_split_side_data(&tmp);
2246 //apply_param_change(avctx, &tmp);
2249 ret = recode_subtitle(avctx, &pkt_recoded, &tmp);
2253 avctx->pkt = &pkt_recoded;
2255 if (avctx->pkt_timebase.den && avpkt->pts != AV_NOPTS_VALUE)
2256 sub->pts = av_rescale_q(avpkt->pts,
2257 avctx->pkt_timebase, AV_TIME_BASE_Q);
2258 ret = avctx->codec->decode(avctx, sub, got_sub_ptr, &pkt_recoded);
2259 av_assert1((ret >= 0) >= !!*got_sub_ptr &&
2260 !!*got_sub_ptr >= !!sub->num_rects);
2262 if (sub->num_rects && !sub->end_display_time && avpkt->duration &&
2263 avctx->pkt_timebase.num) {
2264 AVRational ms = { 1, 1000 };
2265 sub->end_display_time = av_rescale_q(avpkt->duration,
2266 avctx->pkt_timebase, ms);
2269 for (i = 0; i < sub->num_rects; i++) {
2270 if (sub->rects[i]->ass && !utf8_check(sub->rects[i]->ass)) {
2271 av_log(avctx, AV_LOG_ERROR,
2272 "Invalid UTF-8 in decoded subtitles text; "
2273 "maybe missing -sub_charenc option\n");
2274 avsubtitle_free(sub);
2275 return AVERROR_INVALIDDATA;
2279 if (tmp.data != pkt_recoded.data) { // did we recode?
2280 /* prevent from destroying side data from original packet */
2281 pkt_recoded.side_data = NULL;
2282 pkt_recoded.side_data_elems = 0;
2284 av_free_packet(&pkt_recoded);
2286 sub->format = !(avctx->codec_descriptor->props & AV_CODEC_PROP_BITMAP_SUB);
2291 ff_packet_free_side_data(&tmp);
2297 avctx->frame_number++;
2303 void avsubtitle_free(AVSubtitle *sub)
2307 for (i = 0; i < sub->num_rects; i++) {
2308 av_freep(&sub->rects[i]->pict.data[0]);
2309 av_freep(&sub->rects[i]->pict.data[1]);
2310 av_freep(&sub->rects[i]->pict.data[2]);
2311 av_freep(&sub->rects[i]->pict.data[3]);
2312 av_freep(&sub->rects[i]->text);
2313 av_freep(&sub->rects[i]->ass);
2314 av_freep(&sub->rects[i]);
2317 av_freep(&sub->rects);
2319 memset(sub, 0, sizeof(AVSubtitle));
2322 av_cold int ff_codec_close_recursive(AVCodecContext *avctx)
2326 ff_unlock_avcodec();
2328 ret = avcodec_close(avctx);
2330 ff_lock_avcodec(NULL);
2334 av_cold int avcodec_close(AVCodecContext *avctx)
2336 int ret = ff_lock_avcodec(avctx);
2340 if (avcodec_is_open(avctx)) {
2341 FramePool *pool = avctx->internal->pool;
2343 if (CONFIG_FRAME_THREAD_ENCODER &&
2344 avctx->internal->frame_thread_encoder && avctx->thread_count > 1) {
2345 ff_unlock_avcodec();
2346 ff_frame_thread_encoder_free(avctx);
2347 ff_lock_avcodec(avctx);
2349 if (HAVE_THREADS && avctx->thread_opaque)
2350 ff_thread_free(avctx);
2351 if (avctx->codec && avctx->codec->close)
2352 avctx->codec->close(avctx);
2353 avctx->coded_frame = NULL;
2354 avctx->internal->byte_buffer_size = 0;
2355 av_freep(&avctx->internal->byte_buffer);
2356 if (!avctx->refcounted_frames)
2357 av_frame_unref(&avctx->internal->to_free);
2358 for (i = 0; i < FF_ARRAY_ELEMS(pool->pools); i++)
2359 av_buffer_pool_uninit(&pool->pools[i]);
2360 av_freep(&avctx->internal->pool);
2361 av_freep(&avctx->internal);
2364 if (avctx->priv_data && avctx->codec && avctx->codec->priv_class)
2365 av_opt_free(avctx->priv_data);
2367 av_freep(&avctx->priv_data);
2368 if (av_codec_is_encoder(avctx->codec))
2369 av_freep(&avctx->extradata);
2370 avctx->codec = NULL;
2371 avctx->active_thread_type = 0;
2373 ff_unlock_avcodec();
2377 static enum AVCodecID remap_deprecated_codec_id(enum AVCodecID id)
2380 //This is for future deprecatec codec ids, its empty since
2381 //last major bump but will fill up again over time, please don't remove it
2382 // case AV_CODEC_ID_UTVIDEO_DEPRECATED: return AV_CODEC_ID_UTVIDEO;
2383 case AV_CODEC_ID_OPUS_DEPRECATED: return AV_CODEC_ID_OPUS;
2384 case AV_CODEC_ID_TAK_DEPRECATED : return AV_CODEC_ID_TAK;
2385 default : return id;
2389 static AVCodec *find_encdec(enum AVCodecID id, int encoder)
2391 AVCodec *p, *experimental = NULL;
2393 id= remap_deprecated_codec_id(id);
2395 if ((encoder ? av_codec_is_encoder(p) : av_codec_is_decoder(p)) &&
2397 if (p->capabilities & CODEC_CAP_EXPERIMENTAL && !experimental) {
2404 return experimental;
2407 AVCodec *avcodec_find_encoder(enum AVCodecID id)
2409 return find_encdec(id, 1);
2412 AVCodec *avcodec_find_encoder_by_name(const char *name)
2419 if (av_codec_is_encoder(p) && strcmp(name, p->name) == 0)
2426 AVCodec *avcodec_find_decoder(enum AVCodecID id)
2428 return find_encdec(id, 0);
2431 AVCodec *avcodec_find_decoder_by_name(const char *name)
2438 if (av_codec_is_decoder(p) && strcmp(name, p->name) == 0)
2445 const char *avcodec_get_name(enum AVCodecID id)
2447 const AVCodecDescriptor *cd;
2450 if (id == AV_CODEC_ID_NONE)
2452 cd = avcodec_descriptor_get(id);
2455 av_log(NULL, AV_LOG_WARNING, "Codec 0x%x is not in the full list.\n", id);
2456 codec = avcodec_find_decoder(id);
2459 codec = avcodec_find_encoder(id);
2462 return "unknown_codec";
2465 size_t av_get_codec_tag_string(char *buf, size_t buf_size, unsigned int codec_tag)
2467 int i, len, ret = 0;
2469 #define TAG_PRINT(x) \
2470 (((x) >= '0' && (x) <= '9') || \
2471 ((x) >= 'a' && (x) <= 'z') || ((x) >= 'A' && (x) <= 'Z') || \
2472 ((x) == '.' || (x) == ' ' || (x) == '-' || (x) == '_'))
2474 for (i = 0; i < 4; i++) {
2475 len = snprintf(buf, buf_size,
2476 TAG_PRINT(codec_tag & 0xFF) ? "%c" : "[%d]", codec_tag & 0xFF);
2478 buf_size = buf_size > len ? buf_size - len : 0;
2485 void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode)
2487 const char *codec_type;
2488 const char *codec_name;
2489 const char *profile = NULL;
2492 AVRational display_aspect_ratio;
2494 if (!buf || buf_size <= 0)
2496 codec_type = av_get_media_type_string(enc->codec_type);
2497 codec_name = avcodec_get_name(enc->codec_id);
2498 if (enc->profile != FF_PROFILE_UNKNOWN) {
2502 p = encode ? avcodec_find_encoder(enc->codec_id) :
2503 avcodec_find_decoder(enc->codec_id);
2505 profile = av_get_profile_name(p, enc->profile);
2508 snprintf(buf, buf_size, "%s: %s", codec_type ? codec_type : "unknown",
2510 buf[0] ^= 'a' ^ 'A'; /* first letter in uppercase */
2512 if (enc->codec && strcmp(enc->codec->name, codec_name))
2513 snprintf(buf + strlen(buf), buf_size - strlen(buf), " (%s)", enc->codec->name);
2516 snprintf(buf + strlen(buf), buf_size - strlen(buf), " (%s)", profile);
2517 if (enc->codec_tag) {
2519 av_get_codec_tag_string(tag_buf, sizeof(tag_buf), enc->codec_tag);
2520 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2521 " (%s / 0x%04X)", tag_buf, enc->codec_tag);
2524 switch (enc->codec_type) {
2525 case AVMEDIA_TYPE_VIDEO:
2526 if (enc->pix_fmt != AV_PIX_FMT_NONE) {
2527 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2529 av_get_pix_fmt_name(enc->pix_fmt));
2530 if (enc->bits_per_raw_sample &&
2531 enc->bits_per_raw_sample <= av_pix_fmt_desc_get(enc->pix_fmt)->comp[0].depth_minus1)
2532 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2533 " (%d bpc)", enc->bits_per_raw_sample);
2536 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2538 enc->width, enc->height);
2539 if (enc->sample_aspect_ratio.num) {
2540 av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,
2541 enc->width * enc->sample_aspect_ratio.num,
2542 enc->height * enc->sample_aspect_ratio.den,
2544 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2545 " [SAR %d:%d DAR %d:%d]",
2546 enc->sample_aspect_ratio.num, enc->sample_aspect_ratio.den,
2547 display_aspect_ratio.num, display_aspect_ratio.den);
2549 if (av_log_get_level() >= AV_LOG_DEBUG) {
2550 int g = av_gcd(enc->time_base.num, enc->time_base.den);
2551 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2553 enc->time_base.num / g, enc->time_base.den / g);
2557 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2558 ", q=%d-%d", enc->qmin, enc->qmax);
2561 case AVMEDIA_TYPE_AUDIO:
2562 if (enc->sample_rate) {
2563 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2564 ", %d Hz", enc->sample_rate);
2566 av_strlcat(buf, ", ", buf_size);
2567 av_get_channel_layout_string(buf + strlen(buf), buf_size - strlen(buf), enc->channels, enc->channel_layout);
2568 if (enc->sample_fmt != AV_SAMPLE_FMT_NONE) {
2569 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2570 ", %s", av_get_sample_fmt_name(enc->sample_fmt));
2573 case AVMEDIA_TYPE_DATA:
2574 if (av_log_get_level() >= AV_LOG_DEBUG) {
2575 int g = av_gcd(enc->time_base.num, enc->time_base.den);
2577 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2579 enc->time_base.num / g, enc->time_base.den / g);
2586 if (enc->flags & CODEC_FLAG_PASS1)
2587 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2589 if (enc->flags & CODEC_FLAG_PASS2)
2590 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2593 bitrate = get_bit_rate(enc);
2595 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2596 ", %d kb/s", bitrate / 1000);
2600 const char *av_get_profile_name(const AVCodec *codec, int profile)
2603 if (profile == FF_PROFILE_UNKNOWN || !codec->profiles)
2606 for (p = codec->profiles; p->profile != FF_PROFILE_UNKNOWN; p++)
2607 if (p->profile == profile)
2613 unsigned avcodec_version(void)
2615 // av_assert0(AV_CODEC_ID_V410==164);
2616 av_assert0(AV_CODEC_ID_PCM_S8_PLANAR==65563);
2617 av_assert0(AV_CODEC_ID_ADPCM_G722==69660);
2618 // av_assert0(AV_CODEC_ID_BMV_AUDIO==86071);
2619 av_assert0(AV_CODEC_ID_SRT==94216);
2620 av_assert0(LIBAVCODEC_VERSION_MICRO >= 100);
2622 av_assert0(CODEC_ID_CLLC == AV_CODEC_ID_CLLC);
2623 av_assert0(CODEC_ID_PCM_S8_PLANAR == AV_CODEC_ID_PCM_S8_PLANAR);
2624 av_assert0(CODEC_ID_ADPCM_IMA_APC == AV_CODEC_ID_ADPCM_IMA_APC);
2625 av_assert0(CODEC_ID_ILBC == AV_CODEC_ID_ILBC);
2626 av_assert0(CODEC_ID_SRT == AV_CODEC_ID_SRT);
2627 return LIBAVCODEC_VERSION_INT;
2630 const char *avcodec_configuration(void)
2632 return FFMPEG_CONFIGURATION;
2635 const char *avcodec_license(void)
2637 #define LICENSE_PREFIX "libavcodec license: "
2638 return LICENSE_PREFIX FFMPEG_LICENSE + sizeof(LICENSE_PREFIX) - 1;
2641 void avcodec_flush_buffers(AVCodecContext *avctx)
2643 if (HAVE_THREADS && avctx->active_thread_type & FF_THREAD_FRAME)
2644 ff_thread_flush(avctx);
2645 else if (avctx->codec->flush)
2646 avctx->codec->flush(avctx);
2648 avctx->pts_correction_last_pts =
2649 avctx->pts_correction_last_dts = INT64_MIN;
2652 int av_get_exact_bits_per_sample(enum AVCodecID codec_id)
2655 case AV_CODEC_ID_8SVX_EXP:
2656 case AV_CODEC_ID_8SVX_FIB:
2657 case AV_CODEC_ID_ADPCM_CT:
2658 case AV_CODEC_ID_ADPCM_IMA_APC:
2659 case AV_CODEC_ID_ADPCM_IMA_EA_SEAD:
2660 case AV_CODEC_ID_ADPCM_IMA_OKI:
2661 case AV_CODEC_ID_ADPCM_IMA_WS:
2662 case AV_CODEC_ID_ADPCM_G722:
2663 case AV_CODEC_ID_ADPCM_YAMAHA:
2665 case AV_CODEC_ID_PCM_ALAW:
2666 case AV_CODEC_ID_PCM_MULAW:
2667 case AV_CODEC_ID_PCM_S8:
2668 case AV_CODEC_ID_PCM_S8_PLANAR:
2669 case AV_CODEC_ID_PCM_U8:
2670 case AV_CODEC_ID_PCM_ZORK:
2672 case AV_CODEC_ID_PCM_S16BE:
2673 case AV_CODEC_ID_PCM_S16BE_PLANAR:
2674 case AV_CODEC_ID_PCM_S16LE:
2675 case AV_CODEC_ID_PCM_S16LE_PLANAR:
2676 case AV_CODEC_ID_PCM_U16BE:
2677 case AV_CODEC_ID_PCM_U16LE:
2679 case AV_CODEC_ID_PCM_S24DAUD:
2680 case AV_CODEC_ID_PCM_S24BE:
2681 case AV_CODEC_ID_PCM_S24LE:
2682 case AV_CODEC_ID_PCM_S24LE_PLANAR:
2683 case AV_CODEC_ID_PCM_U24BE:
2684 case AV_CODEC_ID_PCM_U24LE:
2686 case AV_CODEC_ID_PCM_S32BE:
2687 case AV_CODEC_ID_PCM_S32LE:
2688 case AV_CODEC_ID_PCM_S32LE_PLANAR:
2689 case AV_CODEC_ID_PCM_U32BE:
2690 case AV_CODEC_ID_PCM_U32LE:
2691 case AV_CODEC_ID_PCM_F32BE:
2692 case AV_CODEC_ID_PCM_F32LE:
2694 case AV_CODEC_ID_PCM_F64BE:
2695 case AV_CODEC_ID_PCM_F64LE:
2702 enum AVCodecID av_get_pcm_codec(enum AVSampleFormat fmt, int be)
2704 static const enum AVCodecID map[AV_SAMPLE_FMT_NB][2] = {
2705 [AV_SAMPLE_FMT_U8 ] = { AV_CODEC_ID_PCM_U8, AV_CODEC_ID_PCM_U8 },
2706 [AV_SAMPLE_FMT_S16 ] = { AV_CODEC_ID_PCM_S16LE, AV_CODEC_ID_PCM_S16BE },
2707 [AV_SAMPLE_FMT_S32 ] = { AV_CODEC_ID_PCM_S32LE, AV_CODEC_ID_PCM_S32BE },
2708 [AV_SAMPLE_FMT_FLT ] = { AV_CODEC_ID_PCM_F32LE, AV_CODEC_ID_PCM_F32BE },
2709 [AV_SAMPLE_FMT_DBL ] = { AV_CODEC_ID_PCM_F64LE, AV_CODEC_ID_PCM_F64BE },
2710 [AV_SAMPLE_FMT_U8P ] = { AV_CODEC_ID_PCM_U8, AV_CODEC_ID_PCM_U8 },
2711 [AV_SAMPLE_FMT_S16P] = { AV_CODEC_ID_PCM_S16LE, AV_CODEC_ID_PCM_S16BE },
2712 [AV_SAMPLE_FMT_S32P] = { AV_CODEC_ID_PCM_S32LE, AV_CODEC_ID_PCM_S32BE },
2713 [AV_SAMPLE_FMT_FLTP] = { AV_CODEC_ID_PCM_F32LE, AV_CODEC_ID_PCM_F32BE },
2714 [AV_SAMPLE_FMT_DBLP] = { AV_CODEC_ID_PCM_F64LE, AV_CODEC_ID_PCM_F64BE },
2716 if (fmt < 0 || fmt >= AV_SAMPLE_FMT_NB)
2717 return AV_CODEC_ID_NONE;
2718 if (be < 0 || be > 1)
2720 return map[fmt][be];
2723 int av_get_bits_per_sample(enum AVCodecID codec_id)
2726 case AV_CODEC_ID_ADPCM_SBPRO_2:
2728 case AV_CODEC_ID_ADPCM_SBPRO_3:
2730 case AV_CODEC_ID_ADPCM_SBPRO_4:
2731 case AV_CODEC_ID_ADPCM_IMA_WAV:
2732 case AV_CODEC_ID_ADPCM_IMA_QT:
2733 case AV_CODEC_ID_ADPCM_SWF:
2734 case AV_CODEC_ID_ADPCM_MS:
2737 return av_get_exact_bits_per_sample(codec_id);
2741 int av_get_audio_frame_duration(AVCodecContext *avctx, int frame_bytes)
2743 int id, sr, ch, ba, tag, bps;
2745 id = avctx->codec_id;
2746 sr = avctx->sample_rate;
2747 ch = avctx->channels;
2748 ba = avctx->block_align;
2749 tag = avctx->codec_tag;
2750 bps = av_get_exact_bits_per_sample(avctx->codec_id);
2752 /* codecs with an exact constant bits per sample */
2753 if (bps > 0 && ch > 0 && frame_bytes > 0 && ch < 32768 && bps < 32768)
2754 return (frame_bytes * 8LL) / (bps * ch);
2755 bps = avctx->bits_per_coded_sample;
2757 /* codecs with a fixed packet duration */
2759 case AV_CODEC_ID_ADPCM_ADX: return 32;
2760 case AV_CODEC_ID_ADPCM_IMA_QT: return 64;
2761 case AV_CODEC_ID_ADPCM_EA_XAS: return 128;
2762 case AV_CODEC_ID_AMR_NB:
2763 case AV_CODEC_ID_EVRC:
2764 case AV_CODEC_ID_GSM:
2765 case AV_CODEC_ID_QCELP:
2766 case AV_CODEC_ID_RA_288: return 160;
2767 case AV_CODEC_ID_AMR_WB:
2768 case AV_CODEC_ID_GSM_MS: return 320;
2769 case AV_CODEC_ID_MP1: return 384;
2770 case AV_CODEC_ID_ATRAC1: return 512;
2771 case AV_CODEC_ID_ATRAC3: return 1024;
2772 case AV_CODEC_ID_MP2:
2773 case AV_CODEC_ID_MUSEPACK7: return 1152;
2774 case AV_CODEC_ID_AC3: return 1536;
2778 /* calc from sample rate */
2779 if (id == AV_CODEC_ID_TTA)
2780 return 256 * sr / 245;
2783 /* calc from sample rate and channels */
2784 if (id == AV_CODEC_ID_BINKAUDIO_DCT)
2785 return (480 << (sr / 22050)) / ch;
2790 /* calc from block_align */
2791 if (id == AV_CODEC_ID_SIPR) {
2793 case 20: return 160;
2794 case 19: return 144;
2795 case 29: return 288;
2796 case 37: return 480;
2798 } else if (id == AV_CODEC_ID_ILBC) {
2800 case 38: return 160;
2801 case 50: return 240;
2806 if (frame_bytes > 0) {
2807 /* calc from frame_bytes only */
2808 if (id == AV_CODEC_ID_TRUESPEECH)
2809 return 240 * (frame_bytes / 32);
2810 if (id == AV_CODEC_ID_NELLYMOSER)
2811 return 256 * (frame_bytes / 64);
2812 if (id == AV_CODEC_ID_RA_144)
2813 return 160 * (frame_bytes / 20);
2814 if (id == AV_CODEC_ID_G723_1)
2815 return 240 * (frame_bytes / 24);
2818 /* calc from frame_bytes and bits_per_coded_sample */
2819 if (id == AV_CODEC_ID_ADPCM_G726)
2820 return frame_bytes * 8 / bps;
2824 /* calc from frame_bytes and channels */
2826 case AV_CODEC_ID_ADPCM_AFC:
2827 return frame_bytes / (9 * ch) * 16;
2828 case AV_CODEC_ID_ADPCM_4XM:
2829 case AV_CODEC_ID_ADPCM_IMA_ISS:
2830 return (frame_bytes - 4 * ch) * 2 / ch;
2831 case AV_CODEC_ID_ADPCM_IMA_SMJPEG:
2832 return (frame_bytes - 4) * 2 / ch;
2833 case AV_CODEC_ID_ADPCM_IMA_AMV:
2834 return (frame_bytes - 8) * 2 / ch;
2835 case AV_CODEC_ID_ADPCM_XA:
2836 return (frame_bytes / 128) * 224 / ch;
2837 case AV_CODEC_ID_INTERPLAY_DPCM:
2838 return (frame_bytes - 6 - ch) / ch;
2839 case AV_CODEC_ID_ROQ_DPCM:
2840 return (frame_bytes - 8) / ch;
2841 case AV_CODEC_ID_XAN_DPCM:
2842 return (frame_bytes - 2 * ch) / ch;
2843 case AV_CODEC_ID_MACE3:
2844 return 3 * frame_bytes / ch;
2845 case AV_CODEC_ID_MACE6:
2846 return 6 * frame_bytes / ch;
2847 case AV_CODEC_ID_PCM_LXF:
2848 return 2 * (frame_bytes / (5 * ch));
2849 case AV_CODEC_ID_IAC:
2850 case AV_CODEC_ID_IMC:
2851 return 4 * frame_bytes / ch;
2855 /* calc from frame_bytes, channels, and codec_tag */
2856 if (id == AV_CODEC_ID_SOL_DPCM) {
2858 return frame_bytes / ch;
2860 return frame_bytes * 2 / ch;
2865 /* calc from frame_bytes, channels, and block_align */
2866 int blocks = frame_bytes / ba;
2867 switch (avctx->codec_id) {
2868 case AV_CODEC_ID_ADPCM_IMA_WAV:
2869 return blocks * (1 + (ba - 4 * ch) / (4 * ch) * 8);
2870 case AV_CODEC_ID_ADPCM_IMA_DK3:
2871 return blocks * (((ba - 16) * 2 / 3 * 4) / ch);
2872 case AV_CODEC_ID_ADPCM_IMA_DK4:
2873 return blocks * (1 + (ba - 4 * ch) * 2 / ch);
2874 case AV_CODEC_ID_ADPCM_MS:
2875 return blocks * (2 + (ba - 7 * ch) * 2 / ch);
2880 /* calc from frame_bytes, channels, and bits_per_coded_sample */
2881 switch (avctx->codec_id) {
2882 case AV_CODEC_ID_PCM_DVD:
2885 return 2 * (frame_bytes / ((bps * 2 / 8) * ch));
2886 case AV_CODEC_ID_PCM_BLURAY:
2889 return frame_bytes / ((FFALIGN(ch, 2) * bps) / 8);
2890 case AV_CODEC_ID_S302M:
2891 return 2 * (frame_bytes / ((bps + 4) / 4)) / ch;
2901 int ff_thread_init(AVCodecContext *s)
2908 unsigned int av_xiphlacing(unsigned char *s, unsigned int v)
2922 int ff_match_2uint16(const uint16_t(*tab)[2], int size, int a, int b)
2925 for (i = 0; i < size && !(tab[i][0] == a && tab[i][1] == b); i++) ;
2929 #if FF_API_MISSING_SAMPLE
2930 void av_log_missing_feature(void *avc, const char *feature, int want_sample)
2932 av_log(avc, AV_LOG_WARNING, "%s is not implemented. Update your FFmpeg "
2933 "version to the newest one from Git. If the problem still "
2934 "occurs, it means that your file has a feature which has not "
2935 "been implemented.\n", feature);
2937 av_log_ask_for_sample(avc, NULL);
2940 void av_log_ask_for_sample(void *avc, const char *msg, ...)
2942 va_list argument_list;
2944 va_start(argument_list, msg);
2947 av_vlog(avc, AV_LOG_WARNING, msg, argument_list);
2948 av_log(avc, AV_LOG_WARNING, "If you want to help, upload a sample "
2949 "of this file to ftp://upload.ffmpeg.org/MPlayer/incoming/ "
2950 "and contact the ffmpeg-devel mailing list.\n");
2952 va_end(argument_list);
2954 #endif /* FF_API_MISSING_SAMPLE */
2956 static AVHWAccel *first_hwaccel = NULL;
2958 void av_register_hwaccel(AVHWAccel *hwaccel)
2960 AVHWAccel **p = &first_hwaccel;
2964 hwaccel->next = NULL;
2967 AVHWAccel *av_hwaccel_next(AVHWAccel *hwaccel)
2969 return hwaccel ? hwaccel->next : first_hwaccel;
2972 AVHWAccel *ff_find_hwaccel(enum AVCodecID codec_id, enum AVPixelFormat pix_fmt)
2974 AVHWAccel *hwaccel = NULL;
2976 while ((hwaccel = av_hwaccel_next(hwaccel)))
2977 if (hwaccel->id == codec_id
2978 && hwaccel->pix_fmt == pix_fmt)
2983 int av_lockmgr_register(int (*cb)(void **mutex, enum AVLockOp op))
2985 if (ff_lockmgr_cb) {
2986 if (ff_lockmgr_cb(&codec_mutex, AV_LOCK_DESTROY))
2988 if (ff_lockmgr_cb(&avformat_mutex, AV_LOCK_DESTROY))
2994 if (ff_lockmgr_cb) {
2995 if (ff_lockmgr_cb(&codec_mutex, AV_LOCK_CREATE))
2997 if (ff_lockmgr_cb(&avformat_mutex, AV_LOCK_CREATE))
3003 int ff_lock_avcodec(AVCodecContext *log_ctx)
3005 if (ff_lockmgr_cb) {
3006 if ((*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_OBTAIN))
3009 entangled_thread_counter++;
3010 if (entangled_thread_counter != 1) {
3011 av_log(log_ctx, AV_LOG_ERROR, "Insufficient thread locking around avcodec_open/close()\n");
3012 ff_avcodec_locked = 1;
3013 ff_unlock_avcodec();
3014 return AVERROR(EINVAL);
3016 av_assert0(!ff_avcodec_locked);
3017 ff_avcodec_locked = 1;
3021 int ff_unlock_avcodec(void)
3023 av_assert0(ff_avcodec_locked);
3024 ff_avcodec_locked = 0;
3025 entangled_thread_counter--;
3026 if (ff_lockmgr_cb) {
3027 if ((*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_RELEASE))
3033 int avpriv_lock_avformat(void)
3035 if (ff_lockmgr_cb) {
3036 if ((*ff_lockmgr_cb)(&avformat_mutex, AV_LOCK_OBTAIN))
3042 int avpriv_unlock_avformat(void)
3044 if (ff_lockmgr_cb) {
3045 if ((*ff_lockmgr_cb)(&avformat_mutex, AV_LOCK_RELEASE))
3051 unsigned int avpriv_toupper4(unsigned int x)
3053 return av_toupper(x & 0xFF) +
3054 (av_toupper((x >> 8) & 0xFF) << 8) +
3055 (av_toupper((x >> 16) & 0xFF) << 16) +
3056 (av_toupper((x >> 24) & 0xFF) << 24);
3059 int ff_thread_ref_frame(ThreadFrame *dst, ThreadFrame *src)
3063 dst->owner = src->owner;
3065 ret = av_frame_ref(dst->f, src->f);
3069 if (src->progress &&
3070 !(dst->progress = av_buffer_ref(src->progress))) {
3071 ff_thread_release_buffer(dst->owner, dst);
3072 return AVERROR(ENOMEM);
3080 enum AVPixelFormat ff_thread_get_format(AVCodecContext *avctx, const enum AVPixelFormat *fmt)
3082 return avctx->get_format(avctx, fmt);
3085 int ff_thread_get_buffer(AVCodecContext *avctx, ThreadFrame *f, int flags)
3088 return ff_get_buffer(avctx, f->f, flags);
3091 void ff_thread_release_buffer(AVCodecContext *avctx, ThreadFrame *f)
3093 av_frame_unref(f->f);
3096 void ff_thread_finish_setup(AVCodecContext *avctx)
3100 void ff_thread_report_progress(ThreadFrame *f, int progress, int field)
3104 void ff_thread_await_progress(ThreadFrame *f, int progress, int field)
3108 int ff_thread_can_start_frame(AVCodecContext *avctx)
3115 enum AVMediaType avcodec_get_type(enum AVCodecID codec_id)
3117 AVCodec *c= avcodec_find_decoder(codec_id);
3119 c= avcodec_find_encoder(codec_id);
3123 if (codec_id <= AV_CODEC_ID_NONE)
3124 return AVMEDIA_TYPE_UNKNOWN;
3125 else if (codec_id < AV_CODEC_ID_FIRST_AUDIO)
3126 return AVMEDIA_TYPE_VIDEO;
3127 else if (codec_id < AV_CODEC_ID_FIRST_SUBTITLE)
3128 return AVMEDIA_TYPE_AUDIO;
3129 else if (codec_id < AV_CODEC_ID_FIRST_UNKNOWN)
3130 return AVMEDIA_TYPE_SUBTITLE;
3132 return AVMEDIA_TYPE_UNKNOWN;
3135 int avcodec_is_open(AVCodecContext *s)
3137 return !!s->internal;
3140 int avpriv_bprint_to_extradata(AVCodecContext *avctx, struct AVBPrint *buf)
3145 ret = av_bprint_finalize(buf, &str);
3148 avctx->extradata = str;
3149 /* Note: the string is NUL terminated (so extradata can be read as a
3150 * string), but the ending character is not accounted in the size (in
3151 * binary formats you are likely not supposed to mux that character). When
3152 * extradata is copied, it is also padded with FF_INPUT_BUFFER_PADDING_SIZE
3154 avctx->extradata_size = buf->len;
3158 const uint8_t *avpriv_find_start_code(const uint8_t *av_restrict p,
3160 uint32_t *av_restrict state)
3168 for (i = 0; i < 3; i++) {
3169 uint32_t tmp = *state << 8;
3170 *state = tmp + *(p++);
3171 if (tmp == 0x100 || p == end)
3176 if (p[-1] > 1 ) p += 3;
3177 else if (p[-2] ) p += 2;
3178 else if (p[-3]|(p[-1]-1)) p++;
3185 p = FFMIN(p, end) - 4;
3186 *state = AV_RB32(p);