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/attributes.h"
30 #include "libavutil/avassert.h"
31 #include "libavutil/avstring.h"
32 #include "libavutil/bprint.h"
33 #include "libavutil/channel_layout.h"
34 #include "libavutil/crc.h"
35 #include "libavutil/frame.h"
36 #include "libavutil/mathematics.h"
37 #include "libavutil/pixdesc.h"
38 #include "libavutil/imgutils.h"
39 #include "libavutil/samplefmt.h"
40 #include "libavutil/dict.h"
41 #include "libavutil/avassert.h"
44 #include "libavutil/opt.h"
46 #include "frame_thread_encoder.h"
48 #include "bytestream.h"
58 volatile int ff_avcodec_locked;
59 static int volatile entangled_thread_counter = 0;
60 static int (*lockmgr_cb)(void **mutex, enum AVLockOp op);
61 static void *codec_mutex;
62 static void *avformat_mutex;
64 void *av_fast_realloc(void *ptr, unsigned int *size, size_t min_size)
69 min_size = FFMAX(17 * min_size / 16 + 32, min_size);
71 ptr = av_realloc(ptr, min_size);
72 /* we could set this to the unmodified min_size but this is safer
73 * if the user lost the ptr and uses NULL now
83 static inline int ff_fast_malloc(void *ptr, unsigned int *size, size_t min_size, int zero_realloc)
88 min_size = FFMAX(17 * min_size / 16 + 32, min_size);
90 *p = zero_realloc ? av_mallocz(min_size) : av_malloc(min_size);
97 void av_fast_malloc(void *ptr, unsigned int *size, size_t min_size)
99 ff_fast_malloc(ptr, size, min_size, 0);
102 void av_fast_padded_malloc(void *ptr, unsigned int *size, size_t min_size)
105 if (min_size > SIZE_MAX - FF_INPUT_BUFFER_PADDING_SIZE) {
110 if (!ff_fast_malloc(p, size, min_size + FF_INPUT_BUFFER_PADDING_SIZE, 1))
111 memset(*p + min_size, 0, FF_INPUT_BUFFER_PADDING_SIZE);
114 void av_fast_padded_mallocz(void *ptr, unsigned int *size, size_t min_size)
117 if (min_size > SIZE_MAX - FF_INPUT_BUFFER_PADDING_SIZE) {
122 if (!ff_fast_malloc(p, size, min_size + FF_INPUT_BUFFER_PADDING_SIZE, 1))
123 memset(*p, 0, min_size + FF_INPUT_BUFFER_PADDING_SIZE);
126 /* encoder management */
127 static AVCodec *first_avcodec = NULL;
129 AVCodec *av_codec_next(const AVCodec *c)
134 return first_avcodec;
137 static av_cold void avcodec_init(void)
139 static int initialized = 0;
141 if (initialized != 0)
146 ff_dsputil_static_init();
149 int av_codec_is_encoder(const AVCodec *codec)
151 return codec && (codec->encode_sub || codec->encode2);
154 int av_codec_is_decoder(const AVCodec *codec)
156 return codec && codec->decode;
159 av_cold void avcodec_register(AVCodec *codec)
169 if (codec->init_static_data)
170 codec->init_static_data(codec);
173 unsigned avcodec_get_edge_width(void)
178 void avcodec_set_dimensions(AVCodecContext *s, int width, int height)
180 s->coded_width = width;
181 s->coded_height = height;
182 s->width = -((-width ) >> s->lowres);
183 s->height = -((-height) >> s->lowres);
186 #if (ARCH_ARM && HAVE_NEON) || ARCH_PPC || HAVE_MMX
187 # define STRIDE_ALIGN 16
189 # define STRIDE_ALIGN 8
192 void avcodec_align_dimensions2(AVCodecContext *s, int *width, int *height,
193 int linesize_align[AV_NUM_DATA_POINTERS])
199 switch (s->pix_fmt) {
200 case AV_PIX_FMT_YUV420P:
201 case AV_PIX_FMT_YUYV422:
202 case AV_PIX_FMT_UYVY422:
203 case AV_PIX_FMT_YUV422P:
204 case AV_PIX_FMT_YUV440P:
205 case AV_PIX_FMT_YUV444P:
206 case AV_PIX_FMT_GBRP:
207 case AV_PIX_FMT_GRAY8:
208 case AV_PIX_FMT_GRAY16BE:
209 case AV_PIX_FMT_GRAY16LE:
210 case AV_PIX_FMT_YUVJ420P:
211 case AV_PIX_FMT_YUVJ422P:
212 case AV_PIX_FMT_YUVJ440P:
213 case AV_PIX_FMT_YUVJ444P:
214 case AV_PIX_FMT_YUVA420P:
215 case AV_PIX_FMT_YUVA422P:
216 case AV_PIX_FMT_YUVA444P:
217 case AV_PIX_FMT_YUV420P9LE:
218 case AV_PIX_FMT_YUV420P9BE:
219 case AV_PIX_FMT_YUV420P10LE:
220 case AV_PIX_FMT_YUV420P10BE:
221 case AV_PIX_FMT_YUV420P12LE:
222 case AV_PIX_FMT_YUV420P12BE:
223 case AV_PIX_FMT_YUV420P14LE:
224 case AV_PIX_FMT_YUV420P14BE:
225 case AV_PIX_FMT_YUV422P9LE:
226 case AV_PIX_FMT_YUV422P9BE:
227 case AV_PIX_FMT_YUV422P10LE:
228 case AV_PIX_FMT_YUV422P10BE:
229 case AV_PIX_FMT_YUV422P12LE:
230 case AV_PIX_FMT_YUV422P12BE:
231 case AV_PIX_FMT_YUV422P14LE:
232 case AV_PIX_FMT_YUV422P14BE:
233 case AV_PIX_FMT_YUV444P9LE:
234 case AV_PIX_FMT_YUV444P9BE:
235 case AV_PIX_FMT_YUV444P10LE:
236 case AV_PIX_FMT_YUV444P10BE:
237 case AV_PIX_FMT_YUV444P12LE:
238 case AV_PIX_FMT_YUV444P12BE:
239 case AV_PIX_FMT_YUV444P14LE:
240 case AV_PIX_FMT_YUV444P14BE:
241 case AV_PIX_FMT_GBRP9LE:
242 case AV_PIX_FMT_GBRP9BE:
243 case AV_PIX_FMT_GBRP10LE:
244 case AV_PIX_FMT_GBRP10BE:
245 case AV_PIX_FMT_GBRP12LE:
246 case AV_PIX_FMT_GBRP12BE:
247 case AV_PIX_FMT_GBRP14LE:
248 case AV_PIX_FMT_GBRP14BE:
249 w_align = 16; //FIXME assume 16 pixel per macroblock
250 h_align = 16 * 2; // interlaced needs 2 macroblocks height
252 case AV_PIX_FMT_YUV411P:
253 case AV_PIX_FMT_UYYVYY411:
257 case AV_PIX_FMT_YUV410P:
258 if (s->codec_id == AV_CODEC_ID_SVQ1) {
263 case AV_PIX_FMT_RGB555:
264 if (s->codec_id == AV_CODEC_ID_RPZA) {
269 case AV_PIX_FMT_PAL8:
270 case AV_PIX_FMT_BGR8:
271 case AV_PIX_FMT_RGB8:
272 if (s->codec_id == AV_CODEC_ID_SMC ||
273 s->codec_id == AV_CODEC_ID_CINEPAK) {
278 case AV_PIX_FMT_BGR24:
279 if ((s->codec_id == AV_CODEC_ID_MSZH) ||
280 (s->codec_id == AV_CODEC_ID_ZLIB)) {
285 case AV_PIX_FMT_RGB24:
286 if (s->codec_id == AV_CODEC_ID_CINEPAK) {
297 if (s->codec_id == AV_CODEC_ID_IFF_ILBM || s->codec_id == AV_CODEC_ID_IFF_BYTERUN1) {
298 w_align = FFMAX(w_align, 8);
301 *width = FFALIGN(*width, w_align);
302 *height = FFALIGN(*height, h_align);
303 if (s->codec_id == AV_CODEC_ID_H264 || s->lowres)
304 // some of the optimized chroma MC reads one line too much
305 // which is also done in mpeg decoders with lowres > 0
308 for (i = 0; i < 4; i++)
309 linesize_align[i] = STRIDE_ALIGN;
312 void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height)
314 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(s->pix_fmt);
315 int chroma_shift = desc->log2_chroma_w;
316 int linesize_align[AV_NUM_DATA_POINTERS];
319 avcodec_align_dimensions2(s, width, height, linesize_align);
320 align = FFMAX(linesize_align[0], linesize_align[3]);
321 linesize_align[1] <<= chroma_shift;
322 linesize_align[2] <<= chroma_shift;
323 align = FFMAX3(align, linesize_align[1], linesize_align[2]);
324 *width = FFALIGN(*width, align);
327 int avcodec_fill_audio_frame(AVFrame *frame, int nb_channels,
328 enum AVSampleFormat sample_fmt, const uint8_t *buf,
329 int buf_size, int align)
331 int ch, planar, needed_size, ret = 0;
333 needed_size = av_samples_get_buffer_size(NULL, nb_channels,
334 frame->nb_samples, sample_fmt,
336 if (buf_size < needed_size)
337 return AVERROR(EINVAL);
339 planar = av_sample_fmt_is_planar(sample_fmt);
340 if (planar && nb_channels > AV_NUM_DATA_POINTERS) {
341 if (!(frame->extended_data = av_mallocz(nb_channels *
342 sizeof(*frame->extended_data))))
343 return AVERROR(ENOMEM);
345 frame->extended_data = frame->data;
348 if ((ret = av_samples_fill_arrays(frame->extended_data, &frame->linesize[0],
349 (uint8_t *)(intptr_t)buf, nb_channels, frame->nb_samples,
350 sample_fmt, align)) < 0) {
351 if (frame->extended_data != frame->data)
352 av_freep(&frame->extended_data);
355 if (frame->extended_data != frame->data) {
356 for (ch = 0; ch < AV_NUM_DATA_POINTERS; ch++)
357 frame->data[ch] = frame->extended_data[ch];
363 static int update_frame_pool(AVCodecContext *avctx, AVFrame *frame)
365 FramePool *pool = avctx->internal->pool;
368 switch (avctx->codec_type) {
369 case AVMEDIA_TYPE_VIDEO: {
372 int w = frame->width;
373 int h = frame->height;
374 int tmpsize, unaligned;
376 if (pool->format == frame->format &&
377 pool->width == frame->width && pool->height == frame->height)
380 avcodec_align_dimensions2(avctx, &w, &h, pool->stride_align);
382 if (!(avctx->flags & CODEC_FLAG_EMU_EDGE)) {
388 // NOTE: do not align linesizes individually, this breaks e.g. assumptions
389 // that linesize[0] == 2*linesize[1] in the MPEG-encoder for 4:2:2
390 av_image_fill_linesizes(picture.linesize, avctx->pix_fmt, w);
391 // increase alignment of w for next try (rhs gives the lowest bit set in w)
395 for (i = 0; i < 4; i++)
396 unaligned |= picture.linesize[i] % pool->stride_align[i];
399 tmpsize = av_image_fill_pointers(picture.data, avctx->pix_fmt, h,
400 NULL, picture.linesize);
404 for (i = 0; i < 3 && picture.data[i + 1]; i++)
405 size[i] = picture.data[i + 1] - picture.data[i];
406 size[i] = tmpsize - (picture.data[i] - picture.data[0]);
408 for (i = 0; i < 4; i++) {
409 av_buffer_pool_uninit(&pool->pools[i]);
410 pool->linesize[i] = picture.linesize[i];
412 pool->pools[i] = av_buffer_pool_init(size[i] + 16,
413 CONFIG_MEMORY_POISONING ?
416 if (!pool->pools[i]) {
417 ret = AVERROR(ENOMEM);
422 pool->format = frame->format;
423 pool->width = frame->width;
424 pool->height = frame->height;
428 case AVMEDIA_TYPE_AUDIO: {
429 int ch = av_frame_get_channels(frame); //av_get_channel_layout_nb_channels(frame->channel_layout);
430 int planar = av_sample_fmt_is_planar(frame->format);
431 int planes = planar ? ch : 1;
433 if (pool->format == frame->format && pool->planes == planes &&
434 pool->channels == ch && frame->nb_samples == pool->samples)
437 av_buffer_pool_uninit(&pool->pools[0]);
438 ret = av_samples_get_buffer_size(&pool->linesize[0], ch,
439 frame->nb_samples, frame->format, 0);
443 pool->pools[0] = av_buffer_pool_init(pool->linesize[0], NULL);
444 if (!pool->pools[0]) {
445 ret = AVERROR(ENOMEM);
449 pool->format = frame->format;
450 pool->planes = planes;
452 pool->samples = frame->nb_samples;
455 default: av_assert0(0);
459 for (i = 0; i < 4; i++)
460 av_buffer_pool_uninit(&pool->pools[i]);
462 pool->planes = pool->channels = pool->samples = 0;
463 pool->width = pool->height = 0;
467 static int audio_get_buffer(AVCodecContext *avctx, AVFrame *frame)
469 FramePool *pool = avctx->internal->pool;
470 int planes = pool->planes;
473 frame->linesize[0] = pool->linesize[0];
475 if (planes > AV_NUM_DATA_POINTERS) {
476 frame->extended_data = av_mallocz(planes * sizeof(*frame->extended_data));
477 frame->nb_extended_buf = planes - AV_NUM_DATA_POINTERS;
478 frame->extended_buf = av_mallocz(frame->nb_extended_buf *
479 sizeof(*frame->extended_buf));
480 if (!frame->extended_data || !frame->extended_buf) {
481 av_freep(&frame->extended_data);
482 av_freep(&frame->extended_buf);
483 return AVERROR(ENOMEM);
486 frame->extended_data = frame->data;
487 av_assert0(frame->nb_extended_buf == 0);
490 for (i = 0; i < FFMIN(planes, AV_NUM_DATA_POINTERS); i++) {
491 frame->buf[i] = av_buffer_pool_get(pool->pools[0]);
494 frame->extended_data[i] = frame->data[i] = frame->buf[i]->data;
496 for (i = 0; i < frame->nb_extended_buf; i++) {
497 frame->extended_buf[i] = av_buffer_pool_get(pool->pools[0]);
498 if (!frame->extended_buf[i])
500 frame->extended_data[i + AV_NUM_DATA_POINTERS] = frame->extended_buf[i]->data;
503 if (avctx->debug & FF_DEBUG_BUFFERS)
504 av_log(avctx, AV_LOG_DEBUG, "default_get_buffer called on frame %p", frame);
508 av_frame_unref(frame);
509 return AVERROR(ENOMEM);
512 static int video_get_buffer(AVCodecContext *s, AVFrame *pic)
514 FramePool *pool = s->internal->pool;
515 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pic->format);
516 int pixel_size = desc->comp[0].step_minus1 + 1;
517 int h_chroma_shift, v_chroma_shift;
520 if (pic->data[0] != NULL) {
521 av_log(s, AV_LOG_ERROR, "pic->data[0]!=NULL in avcodec_default_get_buffer\n");
525 memset(pic->data, 0, sizeof(pic->data));
526 pic->extended_data = pic->data;
528 av_pix_fmt_get_chroma_sub_sample(s->pix_fmt, &h_chroma_shift, &v_chroma_shift);
530 for (i = 0; i < 4 && pool->pools[i]; i++) {
531 const int h_shift = i == 0 ? 0 : h_chroma_shift;
532 const int v_shift = i == 0 ? 0 : v_chroma_shift;
534 pic->linesize[i] = pool->linesize[i];
536 pic->buf[i] = av_buffer_pool_get(pool->pools[i]);
540 // no edge if EDGE EMU or not planar YUV
541 if ((s->flags & CODEC_FLAG_EMU_EDGE) || !pool->pools[2])
542 pic->data[i] = pic->buf[i]->data;
544 pic->data[i] = pic->buf[i]->data +
545 FFALIGN((pic->linesize[i] * EDGE_WIDTH >> v_shift) +
546 (pixel_size * EDGE_WIDTH >> h_shift), pool->stride_align[i]);
549 for (; i < AV_NUM_DATA_POINTERS; i++) {
551 pic->linesize[i] = 0;
553 if (pic->data[1] && !pic->data[2])
554 avpriv_set_systematic_pal2((uint32_t *)pic->data[1], s->pix_fmt);
556 if (s->debug & FF_DEBUG_BUFFERS)
557 av_log(s, AV_LOG_DEBUG, "default_get_buffer called on pic %p\n", pic);
562 return AVERROR(ENOMEM);
565 void avpriv_color_frame(AVFrame *frame, const int c[4])
567 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(frame->format);
570 av_assert0(desc->flags & PIX_FMT_PLANAR);
572 for (p = 0; p<desc->nb_components; p++) {
573 uint8_t *dst = frame->data[p];
574 int is_chroma = p == 1 || p == 2;
575 int bytes = -((-frame->width) >> (is_chroma ? desc->log2_chroma_w : 0));
576 for (y = 0; y<-((-frame->height) >> (is_chroma ? desc->log2_chroma_h : 0)); y++){
577 if (desc->comp[0].depth_minus1 >= 8) {
578 for (x = 0; x<bytes; x++)
579 ((uint16_t*)dst)[x] = c[p];
581 memset(dst, c[p], bytes);
582 dst += frame->linesize[p];
587 int avcodec_default_get_buffer2(AVCodecContext *avctx, AVFrame *frame, int flags)
591 if ((ret = update_frame_pool(avctx, frame)) < 0)
594 #if FF_API_GET_BUFFER
595 frame->type = FF_BUFFER_TYPE_INTERNAL;
598 switch (avctx->codec_type) {
599 case AVMEDIA_TYPE_VIDEO:
600 return video_get_buffer(avctx, frame);
601 case AVMEDIA_TYPE_AUDIO:
602 return audio_get_buffer(avctx, frame);
608 int ff_init_buffer_info(AVCodecContext *avctx, AVFrame *frame)
611 frame->pkt_pts = avctx->pkt->pts;
612 av_frame_set_pkt_pos (frame, avctx->pkt->pos);
613 av_frame_set_pkt_duration(frame, avctx->pkt->duration);
614 av_frame_set_pkt_size (frame, avctx->pkt->size);
616 frame->pkt_pts = AV_NOPTS_VALUE;
617 av_frame_set_pkt_pos (frame, -1);
618 av_frame_set_pkt_duration(frame, 0);
619 av_frame_set_pkt_size (frame, -1);
621 frame->reordered_opaque = avctx->reordered_opaque;
623 switch (avctx->codec->type) {
624 case AVMEDIA_TYPE_VIDEO:
625 frame->width = FFMAX(avctx->width , -((-avctx->coded_width )>>avctx->lowres));
626 frame->height = FFMAX(avctx->height, -((-avctx->coded_height)>>avctx->lowres));
627 if (frame->format < 0)
628 frame->format = avctx->pix_fmt;
629 if (!frame->sample_aspect_ratio.num)
630 frame->sample_aspect_ratio = avctx->sample_aspect_ratio;
632 case AVMEDIA_TYPE_AUDIO:
633 if (!frame->sample_rate)
634 frame->sample_rate = avctx->sample_rate;
635 if (frame->format < 0)
636 frame->format = avctx->sample_fmt;
637 if (!frame->channel_layout) {
638 if (avctx->channel_layout) {
639 if (av_get_channel_layout_nb_channels(avctx->channel_layout) !=
641 av_log(avctx, AV_LOG_ERROR, "Inconsistent channel "
643 return AVERROR(EINVAL);
646 frame->channel_layout = avctx->channel_layout;
648 if (avctx->channels > FF_SANE_NB_CHANNELS) {
649 av_log(avctx, AV_LOG_ERROR, "Too many channels: %d.\n",
651 return AVERROR(ENOSYS);
655 av_frame_set_channels(frame, avctx->channels);
661 #if FF_API_GET_BUFFER
662 int avcodec_default_get_buffer(AVCodecContext *avctx, AVFrame *frame)
664 return avcodec_default_get_buffer2(avctx, frame, 0);
667 typedef struct CompatReleaseBufPriv {
668 AVCodecContext avctx;
670 } CompatReleaseBufPriv;
672 static void compat_free_buffer(void *opaque, uint8_t *data)
674 CompatReleaseBufPriv *priv = opaque;
675 if (priv->avctx.release_buffer)
676 priv->avctx.release_buffer(&priv->avctx, &priv->frame);
680 static void compat_release_buffer(void *opaque, uint8_t *data)
682 AVBufferRef *buf = opaque;
683 av_buffer_unref(&buf);
687 static int get_buffer_internal(AVCodecContext *avctx, AVFrame *frame, int flags)
691 if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
692 if ((ret = av_image_check_size(avctx->width, avctx->height, 0, avctx)) < 0 || avctx->pix_fmt<0) {
693 av_log(avctx, AV_LOG_ERROR, "video_get_buffer: image parameters invalid\n");
694 return AVERROR(EINVAL);
697 if ((ret = ff_init_buffer_info(avctx, frame)) < 0)
700 #if FF_API_GET_BUFFER
702 * Wrap an old get_buffer()-allocated buffer in an bunch of AVBuffers.
703 * We wrap each plane in its own AVBuffer. Each of those has a reference to
704 * a dummy AVBuffer as its private data, unreffing it on free.
705 * When all the planes are freed, the dummy buffer's free callback calls
708 if (avctx->get_buffer) {
709 CompatReleaseBufPriv *priv = NULL;
710 AVBufferRef *dummy_buf = NULL;
713 if (flags & AV_GET_BUFFER_FLAG_REF)
714 frame->reference = 1;
716 ret = avctx->get_buffer(avctx, frame);
720 /* return if the buffers are already set up
721 * this would happen e.g. when a custom get_buffer() calls
722 * avcodec_default_get_buffer
727 priv = av_mallocz(sizeof(*priv));
729 ret = AVERROR(ENOMEM);
732 priv->avctx = *avctx;
733 priv->frame = *frame;
735 dummy_buf = av_buffer_create(NULL, 0, compat_free_buffer, priv, 0);
737 ret = AVERROR(ENOMEM);
741 #define WRAP_PLANE(ref_out, data, data_size) \
743 AVBufferRef *dummy_ref = av_buffer_ref(dummy_buf); \
745 ret = AVERROR(ENOMEM); \
748 ref_out = av_buffer_create(data, data_size, compat_release_buffer, \
751 av_frame_unref(frame); \
752 ret = AVERROR(ENOMEM); \
757 if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
758 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(frame->format);
760 planes = av_pix_fmt_count_planes(frame->format);
761 /* workaround for AVHWAccel plane count of 0, buf[0] is used as
762 check for allocated buffers: make libavcodec happy */
763 if (desc && desc->flags & PIX_FMT_HWACCEL)
765 if (!desc || planes <= 0) {
766 ret = AVERROR(EINVAL);
770 for (i = 0; i < planes; i++) {
771 int v_shift = (i == 1 || i == 2) ? desc->log2_chroma_h : 0;
772 int plane_size = (frame->height >> v_shift) * frame->linesize[i];
774 WRAP_PLANE(frame->buf[i], frame->data[i], plane_size);
777 int planar = av_sample_fmt_is_planar(frame->format);
778 planes = planar ? avctx->channels : 1;
780 if (planes > FF_ARRAY_ELEMS(frame->buf)) {
781 frame->nb_extended_buf = planes - FF_ARRAY_ELEMS(frame->buf);
782 frame->extended_buf = av_malloc(sizeof(*frame->extended_buf) *
783 frame->nb_extended_buf);
784 if (!frame->extended_buf) {
785 ret = AVERROR(ENOMEM);
790 for (i = 0; i < FFMIN(planes, FF_ARRAY_ELEMS(frame->buf)); i++)
791 WRAP_PLANE(frame->buf[i], frame->extended_data[i], frame->linesize[0]);
793 for (i = 0; i < frame->nb_extended_buf; i++)
794 WRAP_PLANE(frame->extended_buf[i],
795 frame->extended_data[i + FF_ARRAY_ELEMS(frame->buf)],
799 av_buffer_unref(&dummy_buf);
802 frame->width = avctx->width;
803 frame->height = avctx->height;
808 avctx->release_buffer(avctx, frame);
810 av_buffer_unref(&dummy_buf);
815 ret = avctx->get_buffer2(avctx, frame, flags);
817 if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
818 frame->width = avctx->width;
819 frame->height = avctx->height;
825 int ff_get_buffer(AVCodecContext *avctx, AVFrame *frame, int flags)
827 int ret = get_buffer_internal(avctx, frame, flags);
829 av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
833 static int reget_buffer_internal(AVCodecContext *avctx, AVFrame *frame)
838 av_assert0(avctx->codec_type == AVMEDIA_TYPE_VIDEO);
840 if (frame->data[0] && (frame->width != avctx->width || frame->height != avctx->height || frame->format != avctx->pix_fmt)) {
841 av_log(avctx, AV_LOG_WARNING, "Picture changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s in reget buffer()\n",
842 frame->width, frame->height, av_get_pix_fmt_name(frame->format), avctx->width, avctx->height, av_get_pix_fmt_name(avctx->pix_fmt));
843 av_frame_unref(frame);
846 ff_init_buffer_info(avctx, frame);
849 return ff_get_buffer(avctx, frame, AV_GET_BUFFER_FLAG_REF);
851 if (av_frame_is_writable(frame))
854 av_frame_move_ref(&tmp, frame);
856 ret = ff_get_buffer(avctx, frame, AV_GET_BUFFER_FLAG_REF);
858 av_frame_unref(&tmp);
862 av_image_copy(frame->data, frame->linesize, tmp.data, tmp.linesize,
863 frame->format, frame->width, frame->height);
865 av_frame_unref(&tmp);
870 int ff_reget_buffer(AVCodecContext *avctx, AVFrame *frame)
872 int ret = reget_buffer_internal(avctx, frame);
874 av_log(avctx, AV_LOG_ERROR, "reget_buffer() failed\n");
878 #if FF_API_GET_BUFFER
879 void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic)
881 av_assert0(s->codec_type == AVMEDIA_TYPE_VIDEO);
886 int avcodec_default_reget_buffer(AVCodecContext *s, AVFrame *pic)
892 int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2), void *arg, int *ret, int count, int size)
896 for (i = 0; i < count; i++) {
897 int r = func(c, (char *)arg + i * size);
904 int avcodec_default_execute2(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2, int jobnr, int threadnr), void *arg, int *ret, int count)
908 for (i = 0; i < count; i++) {
909 int r = func(c, arg, i, 0);
916 static int is_hwaccel_pix_fmt(enum AVPixelFormat pix_fmt)
918 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
919 return desc->flags & PIX_FMT_HWACCEL;
922 enum AVPixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum AVPixelFormat *fmt)
924 while (*fmt != AV_PIX_FMT_NONE && is_hwaccel_pix_fmt(*fmt))
929 void avcodec_get_frame_defaults(AVFrame *frame)
931 #if LIBAVCODEC_VERSION_MAJOR >= 55
932 // extended_data should explicitly be freed when needed, this code is unsafe currently
933 // also this is not compatible to the <55 ABI/API
934 if (frame->extended_data != frame->data && 0)
935 av_freep(&frame->extended_data);
938 memset(frame, 0, sizeof(AVFrame));
942 frame->pkt_pts = AV_NOPTS_VALUE;
943 av_frame_set_best_effort_timestamp(frame, AV_NOPTS_VALUE);
944 av_frame_set_pkt_duration (frame, 0);
945 av_frame_set_pkt_pos (frame, -1);
946 av_frame_set_pkt_size (frame, -1);
947 frame->key_frame = 1;
948 frame->sample_aspect_ratio = (AVRational) {0, 1 };
949 frame->format = -1; /* unknown */
950 frame->extended_data = frame->data;
953 AVFrame *avcodec_alloc_frame(void)
955 AVFrame *frame = av_malloc(sizeof(AVFrame));
960 frame->extended_data = NULL;
961 avcodec_get_frame_defaults(frame);
966 void avcodec_free_frame(AVFrame **frame)
970 if (!frame || !*frame)
975 if (f->extended_data != f->data)
976 av_freep(&f->extended_data);
981 #define MAKE_ACCESSORS(str, name, type, field) \
982 type av_##name##_get_##field(const str *s) { return s->field; } \
983 void av_##name##_set_##field(str *s, type v) { s->field = v; }
985 MAKE_ACCESSORS(AVCodecContext, codec, AVRational, pkt_timebase)
986 MAKE_ACCESSORS(AVCodecContext, codec, const AVCodecDescriptor *, codec_descriptor)
987 MAKE_ACCESSORS(AVCodecContext, codec, int, lowres)
989 static void avcodec_get_subtitle_defaults(AVSubtitle *sub)
991 memset(sub, 0, sizeof(*sub));
992 sub->pts = AV_NOPTS_VALUE;
995 static int get_bit_rate(AVCodecContext *ctx)
1000 switch (ctx->codec_type) {
1001 case AVMEDIA_TYPE_VIDEO:
1002 case AVMEDIA_TYPE_DATA:
1003 case AVMEDIA_TYPE_SUBTITLE:
1004 case AVMEDIA_TYPE_ATTACHMENT:
1005 bit_rate = ctx->bit_rate;
1007 case AVMEDIA_TYPE_AUDIO:
1008 bits_per_sample = av_get_bits_per_sample(ctx->codec_id);
1009 bit_rate = bits_per_sample ? ctx->sample_rate * ctx->channels * bits_per_sample : ctx->bit_rate;
1018 #if FF_API_AVCODEC_OPEN
1019 int attribute_align_arg avcodec_open(AVCodecContext *avctx, AVCodec *codec)
1021 return avcodec_open2(avctx, codec, NULL);
1025 int attribute_align_arg ff_codec_open2_recursive(AVCodecContext *avctx, const AVCodec *codec, AVDictionary **options)
1029 ff_unlock_avcodec();
1031 ret = avcodec_open2(avctx, codec, options);
1033 ff_lock_avcodec(avctx);
1037 int attribute_align_arg avcodec_open2(AVCodecContext *avctx, const AVCodec *codec, AVDictionary **options)
1040 AVDictionary *tmp = NULL;
1042 if (avcodec_is_open(avctx))
1045 if ((!codec && !avctx->codec)) {
1046 av_log(avctx, AV_LOG_ERROR, "No codec provided to avcodec_open2()\n");
1047 return AVERROR(EINVAL);
1049 if ((codec && avctx->codec && codec != avctx->codec)) {
1050 av_log(avctx, AV_LOG_ERROR, "This AVCodecContext was allocated for %s, "
1051 "but %s passed to avcodec_open2()\n", avctx->codec->name, codec->name);
1052 return AVERROR(EINVAL);
1055 codec = avctx->codec;
1057 if (avctx->extradata_size < 0 || avctx->extradata_size >= FF_MAX_EXTRADATA_SIZE)
1058 return AVERROR(EINVAL);
1061 av_dict_copy(&tmp, *options, 0);
1063 ret = ff_lock_avcodec(avctx);
1067 avctx->internal = av_mallocz(sizeof(AVCodecInternal));
1068 if (!avctx->internal) {
1069 ret = AVERROR(ENOMEM);
1073 avctx->internal->pool = av_mallocz(sizeof(*avctx->internal->pool));
1074 if (!avctx->internal->pool) {
1075 ret = AVERROR(ENOMEM);
1079 if (codec->priv_data_size > 0) {
1080 if (!avctx->priv_data) {
1081 avctx->priv_data = av_mallocz(codec->priv_data_size);
1082 if (!avctx->priv_data) {
1083 ret = AVERROR(ENOMEM);
1086 if (codec->priv_class) {
1087 *(const AVClass **)avctx->priv_data = codec->priv_class;
1088 av_opt_set_defaults(avctx->priv_data);
1091 if (codec->priv_class && (ret = av_opt_set_dict(avctx->priv_data, &tmp)) < 0)
1094 avctx->priv_data = NULL;
1096 if ((ret = av_opt_set_dict(avctx, &tmp)) < 0)
1099 // only call avcodec_set_dimensions() for non H.264/VP6F codecs so as not to overwrite previously setup dimensions
1100 if (!(avctx->coded_width && avctx->coded_height && avctx->width && avctx->height &&
1101 (avctx->codec_id == AV_CODEC_ID_H264 || avctx->codec_id == AV_CODEC_ID_VP6F))) {
1102 if (avctx->coded_width && avctx->coded_height)
1103 avcodec_set_dimensions(avctx, avctx->coded_width, avctx->coded_height);
1104 else if (avctx->width && avctx->height)
1105 avcodec_set_dimensions(avctx, avctx->width, avctx->height);
1108 if ((avctx->coded_width || avctx->coded_height || avctx->width || avctx->height)
1109 && ( av_image_check_size(avctx->coded_width, avctx->coded_height, 0, avctx) < 0
1110 || av_image_check_size(avctx->width, avctx->height, 0, avctx) < 0)) {
1111 av_log(avctx, AV_LOG_WARNING, "Ignoring invalid width/height values\n");
1112 avcodec_set_dimensions(avctx, 0, 0);
1115 /* if the decoder init function was already called previously,
1116 * free the already allocated subtitle_header before overwriting it */
1117 if (av_codec_is_decoder(codec))
1118 av_freep(&avctx->subtitle_header);
1120 if (avctx->channels > FF_SANE_NB_CHANNELS) {
1121 ret = AVERROR(EINVAL);
1125 avctx->codec = codec;
1126 if ((avctx->codec_type == AVMEDIA_TYPE_UNKNOWN || avctx->codec_type == codec->type) &&
1127 avctx->codec_id == AV_CODEC_ID_NONE) {
1128 avctx->codec_type = codec->type;
1129 avctx->codec_id = codec->id;
1131 if (avctx->codec_id != codec->id || (avctx->codec_type != codec->type
1132 && avctx->codec_type != AVMEDIA_TYPE_ATTACHMENT)) {
1133 av_log(avctx, AV_LOG_ERROR, "Codec type or id mismatches\n");
1134 ret = AVERROR(EINVAL);
1137 avctx->frame_number = 0;
1138 avctx->codec_descriptor = avcodec_descriptor_get(avctx->codec_id);
1140 if (avctx->codec->capabilities & CODEC_CAP_EXPERIMENTAL &&
1141 avctx->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
1142 const char *codec_string = av_codec_is_encoder(codec) ? "encoder" : "decoder";
1144 av_log(avctx, AV_LOG_ERROR,
1145 "The %s '%s' is experimental but experimental codecs are not enabled, "
1146 "add '-strict %d' if you want to use it.\n",
1147 codec_string, codec->name, FF_COMPLIANCE_EXPERIMENTAL);
1148 codec2 = av_codec_is_encoder(codec) ? avcodec_find_encoder(codec->id) : avcodec_find_decoder(codec->id);
1149 if (!(codec2->capabilities & CODEC_CAP_EXPERIMENTAL))
1150 av_log(avctx, AV_LOG_ERROR, "Alternatively use the non experimental %s '%s'.\n",
1151 codec_string, codec2->name);
1152 ret = AVERROR_EXPERIMENTAL;
1156 if (avctx->codec_type == AVMEDIA_TYPE_AUDIO &&
1157 (!avctx->time_base.num || !avctx->time_base.den)) {
1158 avctx->time_base.num = 1;
1159 avctx->time_base.den = avctx->sample_rate;
1163 av_log(avctx, AV_LOG_WARNING, "Warning: not compiled with thread support, using thread emulation\n");
1165 if (CONFIG_FRAME_THREAD_ENCODER) {
1166 ff_unlock_avcodec(); //we will instanciate a few encoders thus kick the counter to prevent false detection of a problem
1167 ret = ff_frame_thread_encoder_init(avctx, options ? *options : NULL);
1168 ff_lock_avcodec(avctx);
1173 if (HAVE_THREADS && !avctx->thread_opaque
1174 && !(avctx->internal->frame_thread_encoder && (avctx->active_thread_type&FF_THREAD_FRAME))) {
1175 ret = ff_thread_init(avctx);
1180 if (!HAVE_THREADS && !(codec->capabilities & CODEC_CAP_AUTO_THREADS))
1181 avctx->thread_count = 1;
1183 if (avctx->codec->max_lowres < avctx->lowres || avctx->lowres < 0) {
1184 av_log(avctx, AV_LOG_ERROR, "The maximum value for lowres supported by the decoder is %d\n",
1185 avctx->codec->max_lowres);
1186 ret = AVERROR(EINVAL);
1190 if (av_codec_is_encoder(avctx->codec)) {
1192 if (avctx->codec->sample_fmts) {
1193 for (i = 0; avctx->codec->sample_fmts[i] != AV_SAMPLE_FMT_NONE; i++) {
1194 if (avctx->sample_fmt == avctx->codec->sample_fmts[i])
1196 if (avctx->channels == 1 &&
1197 av_get_planar_sample_fmt(avctx->sample_fmt) ==
1198 av_get_planar_sample_fmt(avctx->codec->sample_fmts[i])) {
1199 avctx->sample_fmt = avctx->codec->sample_fmts[i];
1203 if (avctx->codec->sample_fmts[i] == AV_SAMPLE_FMT_NONE) {
1205 snprintf(buf, sizeof(buf), "%d", avctx->sample_fmt);
1206 av_log(avctx, AV_LOG_ERROR, "Specified sample format %s is invalid or not supported\n",
1207 (char *)av_x_if_null(av_get_sample_fmt_name(avctx->sample_fmt), buf));
1208 ret = AVERROR(EINVAL);
1212 if (avctx->codec->pix_fmts) {
1213 for (i = 0; avctx->codec->pix_fmts[i] != AV_PIX_FMT_NONE; i++)
1214 if (avctx->pix_fmt == avctx->codec->pix_fmts[i])
1216 if (avctx->codec->pix_fmts[i] == AV_PIX_FMT_NONE
1217 && !((avctx->codec_id == AV_CODEC_ID_MJPEG || avctx->codec_id == AV_CODEC_ID_LJPEG)
1218 && avctx->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL)) {
1220 snprintf(buf, sizeof(buf), "%d", avctx->pix_fmt);
1221 av_log(avctx, AV_LOG_ERROR, "Specified pixel format %s is invalid or not supported\n",
1222 (char *)av_x_if_null(av_get_pix_fmt_name(avctx->pix_fmt), buf));
1223 ret = AVERROR(EINVAL);
1227 if (avctx->codec->supported_samplerates) {
1228 for (i = 0; avctx->codec->supported_samplerates[i] != 0; i++)
1229 if (avctx->sample_rate == avctx->codec->supported_samplerates[i])
1231 if (avctx->codec->supported_samplerates[i] == 0) {
1232 av_log(avctx, AV_LOG_ERROR, "Specified sample rate %d is not supported\n",
1233 avctx->sample_rate);
1234 ret = AVERROR(EINVAL);
1238 if (avctx->codec->channel_layouts) {
1239 if (!avctx->channel_layout) {
1240 av_log(avctx, AV_LOG_WARNING, "Channel layout not specified\n");
1242 for (i = 0; avctx->codec->channel_layouts[i] != 0; i++)
1243 if (avctx->channel_layout == avctx->codec->channel_layouts[i])
1245 if (avctx->codec->channel_layouts[i] == 0) {
1247 av_get_channel_layout_string(buf, sizeof(buf), -1, avctx->channel_layout);
1248 av_log(avctx, AV_LOG_ERROR, "Specified channel layout '%s' is not supported\n", buf);
1249 ret = AVERROR(EINVAL);
1254 if (avctx->channel_layout && avctx->channels) {
1255 int channels = av_get_channel_layout_nb_channels(avctx->channel_layout);
1256 if (channels != avctx->channels) {
1258 av_get_channel_layout_string(buf, sizeof(buf), -1, avctx->channel_layout);
1259 av_log(avctx, AV_LOG_ERROR,
1260 "Channel layout '%s' with %d channels does not match number of specified channels %d\n",
1261 buf, channels, avctx->channels);
1262 ret = AVERROR(EINVAL);
1265 } else if (avctx->channel_layout) {
1266 avctx->channels = av_get_channel_layout_nb_channels(avctx->channel_layout);
1268 if(avctx->codec_type == AVMEDIA_TYPE_VIDEO &&
1269 avctx->codec_id != AV_CODEC_ID_PNG // For mplayer
1271 if (avctx->width <= 0 || avctx->height <= 0) {
1272 av_log(avctx, AV_LOG_ERROR, "dimensions not set\n");
1273 ret = AVERROR(EINVAL);
1277 if ( (avctx->codec_type == AVMEDIA_TYPE_VIDEO || avctx->codec_type == AVMEDIA_TYPE_AUDIO)
1278 && avctx->bit_rate>0 && avctx->bit_rate<1000) {
1279 av_log(avctx, AV_LOG_WARNING, "Bitrate %d is extremely low, maybe you mean %dk\n", avctx->bit_rate, avctx->bit_rate);
1282 if (!avctx->rc_initial_buffer_occupancy)
1283 avctx->rc_initial_buffer_occupancy = avctx->rc_buffer_size * 3 / 4;
1286 avctx->pts_correction_num_faulty_pts =
1287 avctx->pts_correction_num_faulty_dts = 0;
1288 avctx->pts_correction_last_pts =
1289 avctx->pts_correction_last_dts = INT64_MIN;
1291 if ( avctx->codec->init && (!(avctx->active_thread_type&FF_THREAD_FRAME)
1292 || avctx->internal->frame_thread_encoder)) {
1293 ret = avctx->codec->init(avctx);
1301 if (av_codec_is_decoder(avctx->codec)) {
1302 if (!avctx->bit_rate)
1303 avctx->bit_rate = get_bit_rate(avctx);
1304 /* validate channel layout from the decoder */
1305 if (avctx->channel_layout) {
1306 int channels = av_get_channel_layout_nb_channels(avctx->channel_layout);
1307 if (!avctx->channels)
1308 avctx->channels = channels;
1309 else if (channels != avctx->channels) {
1311 av_get_channel_layout_string(buf, sizeof(buf), -1, avctx->channel_layout);
1312 av_log(avctx, AV_LOG_WARNING,
1313 "Channel layout '%s' with %d channels does not match specified number of channels %d: "
1314 "ignoring specified channel layout\n",
1315 buf, channels, avctx->channels);
1316 avctx->channel_layout = 0;
1319 if (avctx->channels && avctx->channels < 0 ||
1320 avctx->channels > FF_SANE_NB_CHANNELS) {
1321 ret = AVERROR(EINVAL);
1324 if (avctx->sub_charenc) {
1325 if (avctx->codec_type != AVMEDIA_TYPE_SUBTITLE) {
1326 av_log(avctx, AV_LOG_ERROR, "Character encoding is only "
1327 "supported with subtitles codecs\n");
1328 ret = AVERROR(EINVAL);
1330 } else if (avctx->codec_descriptor->props & AV_CODEC_PROP_BITMAP_SUB) {
1331 av_log(avctx, AV_LOG_WARNING, "Codec '%s' is bitmap-based, "
1332 "subtitles character encoding will be ignored\n",
1333 avctx->codec_descriptor->name);
1334 avctx->sub_charenc_mode = FF_SUB_CHARENC_MODE_DO_NOTHING;
1336 /* input character encoding is set for a text based subtitle
1337 * codec at this point */
1338 if (avctx->sub_charenc_mode == FF_SUB_CHARENC_MODE_AUTOMATIC)
1339 avctx->sub_charenc_mode = FF_SUB_CHARENC_MODE_PRE_DECODER;
1341 if (avctx->sub_charenc_mode == FF_SUB_CHARENC_MODE_PRE_DECODER) {
1343 iconv_t cd = iconv_open("UTF-8", avctx->sub_charenc);
1344 if (cd == (iconv_t)-1) {
1345 av_log(avctx, AV_LOG_ERROR, "Unable to open iconv context "
1346 "with input character encoding \"%s\"\n", avctx->sub_charenc);
1347 ret = AVERROR(errno);
1352 av_log(avctx, AV_LOG_ERROR, "Character encoding subtitles "
1353 "conversion needs a libavcodec built with iconv support "
1354 "for this codec\n");
1355 ret = AVERROR(ENOSYS);
1363 ff_unlock_avcodec();
1365 av_dict_free(options);
1372 av_freep(&avctx->priv_data);
1373 if (avctx->internal)
1374 av_freep(&avctx->internal->pool);
1375 av_freep(&avctx->internal);
1376 avctx->codec = NULL;
1380 int ff_alloc_packet2(AVCodecContext *avctx, AVPacket *avpkt, int size)
1382 if (size < 0 || avpkt->size < 0 || size > INT_MAX - FF_INPUT_BUFFER_PADDING_SIZE) {
1383 av_log(avctx, AV_LOG_ERROR, "Size %d invalid\n", size);
1384 return AVERROR(EINVAL);
1388 av_assert0(!avpkt->data || avpkt->data != avctx->internal->byte_buffer);
1389 if (!avpkt->data || avpkt->size < size) {
1390 av_fast_padded_malloc(&avctx->internal->byte_buffer, &avctx->internal->byte_buffer_size, size);
1391 avpkt->data = avctx->internal->byte_buffer;
1392 avpkt->size = avctx->internal->byte_buffer_size;
1393 avpkt->destruct = NULL;
1398 AVBufferRef *buf = avpkt->buf;
1399 #if FF_API_DESTRUCT_PACKET
1400 void *destruct = avpkt->destruct;
1403 if (avpkt->size < size) {
1404 av_log(avctx, AV_LOG_ERROR, "User packet is too small (%d < %d)\n", avpkt->size, size);
1405 return AVERROR(EINVAL);
1408 av_init_packet(avpkt);
1409 #if FF_API_DESTRUCT_PACKET
1410 avpkt->destruct = destruct;
1416 int ret = av_new_packet(avpkt, size);
1418 av_log(avctx, AV_LOG_ERROR, "Failed to allocate packet of size %d\n", size);
1423 int ff_alloc_packet(AVPacket *avpkt, int size)
1425 return ff_alloc_packet2(NULL, avpkt, size);
1429 * Pad last frame with silence.
1431 static int pad_last_frame(AVCodecContext *s, AVFrame **dst, const AVFrame *src)
1433 AVFrame *frame = NULL;
1434 uint8_t *buf = NULL;
1437 if (!(frame = avcodec_alloc_frame()))
1438 return AVERROR(ENOMEM);
1441 if ((ret = av_samples_get_buffer_size(&frame->linesize[0], s->channels,
1442 s->frame_size, s->sample_fmt, 0)) < 0)
1445 if (!(buf = av_malloc(ret))) {
1446 ret = AVERROR(ENOMEM);
1450 frame->nb_samples = s->frame_size;
1451 if ((ret = avcodec_fill_audio_frame(frame, s->channels, s->sample_fmt,
1454 if ((ret = av_samples_copy(frame->extended_data, src->extended_data, 0, 0,
1455 src->nb_samples, s->channels, s->sample_fmt)) < 0)
1457 if ((ret = av_samples_set_silence(frame->extended_data, src->nb_samples,
1458 frame->nb_samples - src->nb_samples,
1459 s->channels, s->sample_fmt)) < 0)
1467 if (frame->extended_data != frame->data)
1468 av_freep(&frame->extended_data);
1474 int attribute_align_arg avcodec_encode_audio2(AVCodecContext *avctx,
1476 const AVFrame *frame,
1477 int *got_packet_ptr)
1480 AVFrame *padded_frame = NULL;
1482 AVPacket user_pkt = *avpkt;
1483 int needs_realloc = !user_pkt.data;
1485 *got_packet_ptr = 0;
1487 if (!(avctx->codec->capabilities & CODEC_CAP_DELAY) && !frame) {
1488 av_free_packet(avpkt);
1489 av_init_packet(avpkt);
1493 /* ensure that extended_data is properly set */
1494 if (frame && !frame->extended_data) {
1495 if (av_sample_fmt_is_planar(avctx->sample_fmt) &&
1496 avctx->channels > AV_NUM_DATA_POINTERS) {
1497 av_log(avctx, AV_LOG_ERROR, "Encoding to a planar sample format, "
1498 "with more than %d channels, but extended_data is not set.\n",
1499 AV_NUM_DATA_POINTERS);
1500 return AVERROR(EINVAL);
1502 av_log(avctx, AV_LOG_WARNING, "extended_data is not set.\n");
1505 tmp.extended_data = tmp.data;
1509 /* check for valid frame size */
1511 if (avctx->codec->capabilities & CODEC_CAP_SMALL_LAST_FRAME) {
1512 if (frame->nb_samples > avctx->frame_size) {
1513 av_log(avctx, AV_LOG_ERROR, "more samples than frame size (avcodec_encode_audio2)\n");
1514 return AVERROR(EINVAL);
1516 } else if (!(avctx->codec->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE)) {
1517 if (frame->nb_samples < avctx->frame_size &&
1518 !avctx->internal->last_audio_frame) {
1519 ret = pad_last_frame(avctx, &padded_frame, frame);
1523 frame = padded_frame;
1524 avctx->internal->last_audio_frame = 1;
1527 if (frame->nb_samples != avctx->frame_size) {
1528 av_log(avctx, AV_LOG_ERROR, "nb_samples (%d) != frame_size (%d) (avcodec_encode_audio2)\n", frame->nb_samples, avctx->frame_size);
1529 ret = AVERROR(EINVAL);
1535 ret = avctx->codec->encode2(avctx, avpkt, frame, got_packet_ptr);
1537 if (*got_packet_ptr) {
1538 if (!(avctx->codec->capabilities & CODEC_CAP_DELAY)) {
1539 if (avpkt->pts == AV_NOPTS_VALUE)
1540 avpkt->pts = frame->pts;
1541 if (!avpkt->duration)
1542 avpkt->duration = ff_samples_to_time_base(avctx,
1545 avpkt->dts = avpkt->pts;
1550 if (avpkt->data && avpkt->data == avctx->internal->byte_buffer) {
1552 if (user_pkt.data) {
1553 if (user_pkt.size >= avpkt->size) {
1554 memcpy(user_pkt.data, avpkt->data, avpkt->size);
1556 av_log(avctx, AV_LOG_ERROR, "Provided packet is too small, needs to be %d\n", avpkt->size);
1557 avpkt->size = user_pkt.size;
1560 avpkt->buf = user_pkt.buf;
1561 avpkt->data = user_pkt.data;
1562 avpkt->destruct = user_pkt.destruct;
1564 if (av_dup_packet(avpkt) < 0) {
1565 ret = AVERROR(ENOMEM);
1571 if (needs_realloc && avpkt->data) {
1572 ret = av_buffer_realloc(&avpkt->buf, avpkt->size + FF_INPUT_BUFFER_PADDING_SIZE);
1574 avpkt->data = avpkt->buf->data;
1577 avctx->frame_number++;
1580 if (ret < 0 || !*got_packet_ptr) {
1581 av_free_packet(avpkt);
1582 av_init_packet(avpkt);
1586 /* NOTE: if we add any audio encoders which output non-keyframe packets,
1587 * this needs to be moved to the encoders, but for now we can do it
1588 * here to simplify things */
1589 avpkt->flags |= AV_PKT_FLAG_KEY;
1593 av_freep(&padded_frame->data[0]);
1594 if (padded_frame->extended_data != padded_frame->data)
1595 av_freep(&padded_frame->extended_data);
1596 av_freep(&padded_frame);
1602 #if FF_API_OLD_ENCODE_AUDIO
1603 int attribute_align_arg avcodec_encode_audio(AVCodecContext *avctx,
1604 uint8_t *buf, int buf_size,
1605 const short *samples)
1608 AVFrame frame0 = { { 0 } };
1610 int ret, samples_size, got_packet;
1612 av_init_packet(&pkt);
1614 pkt.size = buf_size;
1618 avcodec_get_frame_defaults(frame);
1620 if (avctx->frame_size) {
1621 frame->nb_samples = avctx->frame_size;
1623 /* if frame_size is not set, the number of samples must be
1624 * calculated from the buffer size */
1626 if (!av_get_bits_per_sample(avctx->codec_id)) {
1627 av_log(avctx, AV_LOG_ERROR, "avcodec_encode_audio() does not "
1628 "support this codec\n");
1629 return AVERROR(EINVAL);
1631 nb_samples = (int64_t)buf_size * 8 /
1632 (av_get_bits_per_sample(avctx->codec_id) *
1634 if (nb_samples >= INT_MAX)
1635 return AVERROR(EINVAL);
1636 frame->nb_samples = nb_samples;
1639 /* it is assumed that the samples buffer is large enough based on the
1640 * relevant parameters */
1641 samples_size = av_samples_get_buffer_size(NULL, avctx->channels,
1643 avctx->sample_fmt, 1);
1644 if ((ret = avcodec_fill_audio_frame(frame, avctx->channels,
1646 (const uint8_t *)samples,
1647 samples_size, 1)) < 0)
1650 /* fabricate frame pts from sample count.
1651 * this is needed because the avcodec_encode_audio() API does not have
1652 * a way for the user to provide pts */
1653 if (avctx->sample_rate && avctx->time_base.num)
1654 frame->pts = ff_samples_to_time_base(avctx,
1655 avctx->internal->sample_count);
1657 frame->pts = AV_NOPTS_VALUE;
1658 avctx->internal->sample_count += frame->nb_samples;
1664 ret = avcodec_encode_audio2(avctx, &pkt, frame, &got_packet);
1665 if (!ret && got_packet && avctx->coded_frame) {
1666 avctx->coded_frame->pts = pkt.pts;
1667 avctx->coded_frame->key_frame = !!(pkt.flags & AV_PKT_FLAG_KEY);
1669 /* free any side data since we cannot return it */
1670 ff_packet_free_side_data(&pkt);
1672 if (frame && frame->extended_data != frame->data)
1673 av_freep(&frame->extended_data);
1675 return ret ? ret : pkt.size;
1680 #if FF_API_OLD_ENCODE_VIDEO
1681 int attribute_align_arg avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size,
1682 const AVFrame *pict)
1685 int ret, got_packet = 0;
1687 if (buf_size < FF_MIN_BUFFER_SIZE) {
1688 av_log(avctx, AV_LOG_ERROR, "buffer smaller than minimum size\n");
1692 av_init_packet(&pkt);
1694 pkt.size = buf_size;
1696 ret = avcodec_encode_video2(avctx, &pkt, pict, &got_packet);
1697 if (!ret && got_packet && avctx->coded_frame) {
1698 avctx->coded_frame->pts = pkt.pts;
1699 avctx->coded_frame->key_frame = !!(pkt.flags & AV_PKT_FLAG_KEY);
1702 /* free any side data since we cannot return it */
1703 if (pkt.side_data_elems > 0) {
1705 for (i = 0; i < pkt.side_data_elems; i++)
1706 av_free(pkt.side_data[i].data);
1707 av_freep(&pkt.side_data);
1708 pkt.side_data_elems = 0;
1711 return ret ? ret : pkt.size;
1716 int attribute_align_arg avcodec_encode_video2(AVCodecContext *avctx,
1718 const AVFrame *frame,
1719 int *got_packet_ptr)
1722 AVPacket user_pkt = *avpkt;
1723 int needs_realloc = !user_pkt.data;
1725 *got_packet_ptr = 0;
1727 if(CONFIG_FRAME_THREAD_ENCODER &&
1728 avctx->internal->frame_thread_encoder && (avctx->active_thread_type&FF_THREAD_FRAME))
1729 return ff_thread_video_encode_frame(avctx, avpkt, frame, got_packet_ptr);
1731 if ((avctx->flags&CODEC_FLAG_PASS1) && avctx->stats_out)
1732 avctx->stats_out[0] = '\0';
1734 if (!(avctx->codec->capabilities & CODEC_CAP_DELAY) && !frame) {
1735 av_free_packet(avpkt);
1736 av_init_packet(avpkt);
1741 if (av_image_check_size(avctx->width, avctx->height, 0, avctx))
1742 return AVERROR(EINVAL);
1744 av_assert0(avctx->codec->encode2);
1746 ret = avctx->codec->encode2(avctx, avpkt, frame, got_packet_ptr);
1747 av_assert0(ret <= 0);
1749 if (avpkt->data && avpkt->data == avctx->internal->byte_buffer) {
1751 if (user_pkt.data) {
1752 if (user_pkt.size >= avpkt->size) {
1753 memcpy(user_pkt.data, avpkt->data, avpkt->size);
1755 av_log(avctx, AV_LOG_ERROR, "Provided packet is too small, needs to be %d\n", avpkt->size);
1756 avpkt->size = user_pkt.size;
1759 avpkt->buf = user_pkt.buf;
1760 avpkt->data = user_pkt.data;
1761 avpkt->destruct = user_pkt.destruct;
1763 if (av_dup_packet(avpkt) < 0) {
1764 ret = AVERROR(ENOMEM);
1770 if (!*got_packet_ptr)
1772 else if (!(avctx->codec->capabilities & CODEC_CAP_DELAY))
1773 avpkt->pts = avpkt->dts = frame->pts;
1775 if (needs_realloc && avpkt->data) {
1776 ret = av_buffer_realloc(&avpkt->buf, avpkt->size + FF_INPUT_BUFFER_PADDING_SIZE);
1778 avpkt->data = avpkt->buf->data;
1781 avctx->frame_number++;
1784 if (ret < 0 || !*got_packet_ptr)
1785 av_free_packet(avpkt);
1787 av_packet_merge_side_data(avpkt);
1793 int avcodec_encode_subtitle(AVCodecContext *avctx, uint8_t *buf, int buf_size,
1794 const AVSubtitle *sub)
1797 if (sub->start_display_time) {
1798 av_log(avctx, AV_LOG_ERROR, "start_display_time must be 0.\n");
1802 ret = avctx->codec->encode_sub(avctx, buf, buf_size, sub);
1803 avctx->frame_number++;
1808 * Attempt to guess proper monotonic timestamps for decoded video frames
1809 * which might have incorrect times. Input timestamps may wrap around, in
1810 * which case the output will as well.
1812 * @param pts the pts field of the decoded AVPacket, as passed through
1814 * @param dts the dts field of the decoded AVPacket
1815 * @return one of the input values, may be AV_NOPTS_VALUE
1817 static int64_t guess_correct_pts(AVCodecContext *ctx,
1818 int64_t reordered_pts, int64_t dts)
1820 int64_t pts = AV_NOPTS_VALUE;
1822 if (dts != AV_NOPTS_VALUE) {
1823 ctx->pts_correction_num_faulty_dts += dts <= ctx->pts_correction_last_dts;
1824 ctx->pts_correction_last_dts = dts;
1826 if (reordered_pts != AV_NOPTS_VALUE) {
1827 ctx->pts_correction_num_faulty_pts += reordered_pts <= ctx->pts_correction_last_pts;
1828 ctx->pts_correction_last_pts = reordered_pts;
1830 if ((ctx->pts_correction_num_faulty_pts<=ctx->pts_correction_num_faulty_dts || dts == AV_NOPTS_VALUE)
1831 && reordered_pts != AV_NOPTS_VALUE)
1832 pts = reordered_pts;
1839 static void apply_param_change(AVCodecContext *avctx, AVPacket *avpkt)
1842 const uint8_t *data;
1845 if (!(avctx->codec->capabilities & CODEC_CAP_PARAM_CHANGE))
1848 data = av_packet_get_side_data(avpkt, AV_PKT_DATA_PARAM_CHANGE, &size);
1849 if (!data || size < 4)
1851 flags = bytestream_get_le32(&data);
1853 if (size < 4) /* Required for any of the changes */
1855 if (flags & AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_COUNT) {
1856 avctx->channels = bytestream_get_le32(&data);
1859 if (flags & AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_LAYOUT) {
1862 avctx->channel_layout = bytestream_get_le64(&data);
1867 if (flags & AV_SIDE_DATA_PARAM_CHANGE_SAMPLE_RATE) {
1868 avctx->sample_rate = bytestream_get_le32(&data);
1871 if (flags & AV_SIDE_DATA_PARAM_CHANGE_DIMENSIONS) {
1874 avctx->width = bytestream_get_le32(&data);
1875 avctx->height = bytestream_get_le32(&data);
1876 avcodec_set_dimensions(avctx, avctx->width, avctx->height);
1881 static int add_metadata_from_side_data(AVCodecContext *avctx, AVFrame *frame)
1884 const uint8_t *side_metadata;
1887 side_metadata = av_packet_get_side_data(avctx->pkt,
1888 AV_PKT_DATA_STRINGS_METADATA, &size);
1891 end = side_metadata + size;
1892 while (side_metadata < end) {
1893 const uint8_t *key = side_metadata;
1894 const uint8_t *val = side_metadata + strlen(key) + 1;
1895 int ret = av_dict_set(avpriv_frame_get_metadatap(frame), key, val, 0);
1898 side_metadata = val + strlen(val) + 1;
1904 int attribute_align_arg avcodec_decode_video2(AVCodecContext *avctx, AVFrame *picture,
1905 int *got_picture_ptr,
1906 const AVPacket *avpkt)
1908 AVCodecInternal *avci = avctx->internal;
1910 // copy to ensure we do not change avpkt
1911 AVPacket tmp = *avpkt;
1913 if (avctx->codec->type != AVMEDIA_TYPE_VIDEO) {
1914 av_log(avctx, AV_LOG_ERROR, "Invalid media type for video\n");
1915 return AVERROR(EINVAL);
1918 *got_picture_ptr = 0;
1919 if ((avctx->coded_width || avctx->coded_height) && av_image_check_size(avctx->coded_width, avctx->coded_height, 0, avctx))
1920 return AVERROR(EINVAL);
1922 avcodec_get_frame_defaults(picture);
1924 if (!avctx->refcounted_frames)
1925 av_frame_unref(&avci->to_free);
1927 if ((avctx->codec->capabilities & CODEC_CAP_DELAY) || avpkt->size || (avctx->active_thread_type & FF_THREAD_FRAME)) {
1928 int did_split = av_packet_split_side_data(&tmp);
1929 apply_param_change(avctx, &tmp);
1931 if (HAVE_THREADS && avctx->active_thread_type & FF_THREAD_FRAME)
1932 ret = ff_thread_decode_frame(avctx, picture, got_picture_ptr,
1935 ret = avctx->codec->decode(avctx, picture, got_picture_ptr,
1937 picture->pkt_dts = avpkt->dts;
1939 if(!avctx->has_b_frames){
1940 av_frame_set_pkt_pos(picture, avpkt->pos);
1942 //FIXME these should be under if(!avctx->has_b_frames)
1943 /* get_buffer is supposed to set frame parameters */
1944 if (!(avctx->codec->capabilities & CODEC_CAP_DR1)) {
1945 if (!picture->sample_aspect_ratio.num) picture->sample_aspect_ratio = avctx->sample_aspect_ratio;
1946 if (!picture->width) picture->width = avctx->width;
1947 if (!picture->height) picture->height = avctx->height;
1948 if (picture->format == AV_PIX_FMT_NONE) picture->format = avctx->pix_fmt;
1951 add_metadata_from_side_data(avctx, picture);
1953 emms_c(); //needed to avoid an emms_c() call before every return;
1957 ff_packet_free_side_data(&tmp);
1962 if (ret < 0 && picture->data[0])
1963 av_frame_unref(picture);
1965 if (*got_picture_ptr) {
1966 if (!avctx->refcounted_frames) {
1967 avci->to_free = *picture;
1968 avci->to_free.extended_data = avci->to_free.data;
1969 memset(picture->buf, 0, sizeof(picture->buf));
1972 avctx->frame_number++;
1973 av_frame_set_best_effort_timestamp(picture,
1974 guess_correct_pts(avctx,
1981 /* many decoders assign whole AVFrames, thus overwriting extended_data;
1982 * make sure it's set correctly */
1983 picture->extended_data = picture->data;
1988 #if FF_API_OLD_DECODE_AUDIO
1989 int attribute_align_arg avcodec_decode_audio3(AVCodecContext *avctx, int16_t *samples,
1990 int *frame_size_ptr,
1993 AVFrame frame = { { 0 } };
1994 int ret, got_frame = 0;
1996 if (avctx->get_buffer != avcodec_default_get_buffer) {
1997 av_log(avctx, AV_LOG_ERROR, "Custom get_buffer() for use with"
1998 "avcodec_decode_audio3() detected. Overriding with avcodec_default_get_buffer\n");
1999 av_log(avctx, AV_LOG_ERROR, "Please port your application to "
2000 "avcodec_decode_audio4()\n");
2001 avctx->get_buffer = avcodec_default_get_buffer;
2002 avctx->release_buffer = avcodec_default_release_buffer;
2005 ret = avcodec_decode_audio4(avctx, &frame, &got_frame, avpkt);
2007 if (ret >= 0 && got_frame) {
2009 int planar = av_sample_fmt_is_planar(avctx->sample_fmt);
2010 int data_size = av_samples_get_buffer_size(&plane_size, avctx->channels,
2012 avctx->sample_fmt, 1);
2013 if (*frame_size_ptr < data_size) {
2014 av_log(avctx, AV_LOG_ERROR, "output buffer size is too small for "
2015 "the current frame (%d < %d)\n", *frame_size_ptr, data_size);
2016 return AVERROR(EINVAL);
2019 memcpy(samples, frame.extended_data[0], plane_size);
2021 if (planar && avctx->channels > 1) {
2022 uint8_t *out = ((uint8_t *)samples) + plane_size;
2023 for (ch = 1; ch < avctx->channels; ch++) {
2024 memcpy(out, frame.extended_data[ch], plane_size);
2028 *frame_size_ptr = data_size;
2030 *frame_size_ptr = 0;
2037 int attribute_align_arg avcodec_decode_audio4(AVCodecContext *avctx,
2040 const AVPacket *avpkt)
2042 AVCodecInternal *avci = avctx->internal;
2043 int planar, channels;
2048 if (!avpkt->data && avpkt->size) {
2049 av_log(avctx, AV_LOG_ERROR, "invalid packet: NULL data, size != 0\n");
2050 return AVERROR(EINVAL);
2052 if (avctx->codec->type != AVMEDIA_TYPE_AUDIO) {
2053 av_log(avctx, AV_LOG_ERROR, "Invalid media type for audio\n");
2054 return AVERROR(EINVAL);
2057 avcodec_get_frame_defaults(frame);
2059 if (!avctx->refcounted_frames)
2060 av_frame_unref(&avci->to_free);
2062 if ((avctx->codec->capabilities & CODEC_CAP_DELAY) || avpkt->size) {
2065 // copy to ensure we do not change avpkt
2066 AVPacket tmp = *avpkt;
2067 int did_split = av_packet_split_side_data(&tmp);
2068 apply_param_change(avctx, &tmp);
2071 ret = avctx->codec->decode(avctx, frame, got_frame_ptr, &tmp);
2072 if (ret >= 0 && *got_frame_ptr) {
2073 add_metadata_from_side_data(avctx, frame);
2074 avctx->frame_number++;
2075 frame->pkt_dts = avpkt->dts;
2076 av_frame_set_best_effort_timestamp(frame,
2077 guess_correct_pts(avctx,
2080 if (frame->format == AV_SAMPLE_FMT_NONE)
2081 frame->format = avctx->sample_fmt;
2082 if (!frame->channel_layout)
2083 frame->channel_layout = avctx->channel_layout;
2084 if (!av_frame_get_channels(frame))
2085 av_frame_set_channels(frame, avctx->channels);
2086 if (!frame->sample_rate)
2087 frame->sample_rate = avctx->sample_rate;
2088 if (!avctx->refcounted_frames) {
2089 avci->to_free = *frame;
2090 avci->to_free.extended_data = avci->to_free.data;
2091 memset(frame->buf, 0, sizeof(frame->buf));
2092 frame->extended_buf = NULL;
2093 frame->nb_extended_buf = 0;
2097 side= av_packet_get_side_data(avctx->pkt, AV_PKT_DATA_SKIP_SAMPLES, &side_size);
2098 if(side && side_size>=10) {
2099 avctx->internal->skip_samples = AV_RL32(side);
2100 av_log(avctx, AV_LOG_DEBUG, "skip %d samples due to side data\n",
2101 avctx->internal->skip_samples);
2103 if (avctx->internal->skip_samples && *got_frame_ptr) {
2104 if(frame->nb_samples <= avctx->internal->skip_samples){
2106 avctx->internal->skip_samples -= frame->nb_samples;
2107 av_log(avctx, AV_LOG_DEBUG, "skip whole frame, skip left: %d\n",
2108 avctx->internal->skip_samples);
2110 av_samples_copy(frame->extended_data, frame->extended_data, 0, avctx->internal->skip_samples,
2111 frame->nb_samples - avctx->internal->skip_samples, avctx->channels, frame->format);
2112 if(avctx->pkt_timebase.num && avctx->sample_rate) {
2113 int64_t diff_ts = av_rescale_q(avctx->internal->skip_samples,
2114 (AVRational){1, avctx->sample_rate},
2115 avctx->pkt_timebase);
2116 if(frame->pkt_pts!=AV_NOPTS_VALUE)
2117 frame->pkt_pts += diff_ts;
2118 if(frame->pkt_dts!=AV_NOPTS_VALUE)
2119 frame->pkt_dts += diff_ts;
2120 if (av_frame_get_pkt_duration(frame) >= diff_ts)
2121 av_frame_set_pkt_duration(frame, av_frame_get_pkt_duration(frame) - diff_ts);
2123 av_log(avctx, AV_LOG_WARNING, "Could not update timestamps for skipped samples.\n");
2125 av_log(avctx, AV_LOG_DEBUG, "skip %d/%d samples\n",
2126 avctx->internal->skip_samples, frame->nb_samples);
2127 frame->nb_samples -= avctx->internal->skip_samples;
2128 avctx->internal->skip_samples = 0;
2134 ff_packet_free_side_data(&tmp);
2139 if (ret < 0 && frame->data[0])
2140 av_frame_unref(frame);
2143 /* many decoders assign whole AVFrames, thus overwriting extended_data;
2144 * make sure it's set correctly; assume decoders that actually use
2145 * extended_data are doing it correctly */
2146 if (*got_frame_ptr) {
2147 planar = av_sample_fmt_is_planar(frame->format);
2148 channels = av_frame_get_channels(frame);
2149 if (!(planar && channels > AV_NUM_DATA_POINTERS))
2150 frame->extended_data = frame->data;
2152 frame->extended_data = NULL;
2158 #define UTF8_MAX_BYTES 4 /* 5 and 6 bytes sequences should not be used */
2159 static int recode_subtitle(AVCodecContext *avctx,
2160 AVPacket *outpkt, const AVPacket *inpkt)
2163 iconv_t cd = (iconv_t)-1;
2170 if (avctx->sub_charenc_mode != FF_SUB_CHARENC_MODE_PRE_DECODER)
2174 cd = iconv_open("UTF-8", avctx->sub_charenc);
2175 av_assert0(cd != (iconv_t)-1);
2180 if (inl >= INT_MAX / UTF8_MAX_BYTES - FF_INPUT_BUFFER_PADDING_SIZE) {
2181 av_log(avctx, AV_LOG_ERROR, "Subtitles packet is too big for recoding\n");
2182 ret = AVERROR(ENOMEM);
2186 ret = av_new_packet(&tmp, inl * UTF8_MAX_BYTES);
2189 outpkt->buf = tmp.buf;
2190 outpkt->data = tmp.data;
2191 outpkt->size = tmp.size;
2192 outb = outpkt->data;
2193 outl = outpkt->size;
2195 if (iconv(cd, &inb, &inl, &outb, &outl) == (size_t)-1 ||
2196 iconv(cd, NULL, NULL, &outb, &outl) == (size_t)-1 ||
2197 outl >= outpkt->size || inl != 0) {
2198 av_log(avctx, AV_LOG_ERROR, "Unable to recode subtitle event \"%s\" "
2199 "from %s to UTF-8\n", inpkt->data, avctx->sub_charenc);
2200 av_free_packet(&tmp);
2201 ret = AVERROR(errno);
2204 outpkt->size -= outl;
2205 memset(outpkt->data + outpkt->size, 0, outl);
2208 if (cd != (iconv_t)-1)
2212 av_assert0(!"requesting subtitles recoding without iconv");
2216 static int utf8_check(const uint8_t *str)
2218 const uint8_t *byte;
2219 uint32_t codepoint, min;
2223 GET_UTF8(codepoint, *(byte++), return 0;);
2224 min = byte - str == 1 ? 0 : byte - str == 2 ? 0x80 :
2225 1 << (5 * (byte - str) - 4);
2226 if (codepoint < min || codepoint >= 0x110000 ||
2227 codepoint == 0xFFFE /* BOM */ ||
2228 codepoint >= 0xD800 && codepoint <= 0xDFFF /* surrogates */)
2235 int avcodec_decode_subtitle2(AVCodecContext *avctx, AVSubtitle *sub,
2241 if (avctx->codec->type != AVMEDIA_TYPE_SUBTITLE) {
2242 av_log(avctx, AV_LOG_ERROR, "Invalid media type for subtitles\n");
2243 return AVERROR(EINVAL);
2247 avcodec_get_subtitle_defaults(sub);
2250 AVPacket pkt_recoded;
2251 AVPacket tmp = *avpkt;
2252 int did_split = av_packet_split_side_data(&tmp);
2253 //apply_param_change(avctx, &tmp);
2256 ret = recode_subtitle(avctx, &pkt_recoded, &tmp);
2260 avctx->pkt = &pkt_recoded;
2262 if (avctx->pkt_timebase.den && avpkt->pts != AV_NOPTS_VALUE)
2263 sub->pts = av_rescale_q(avpkt->pts,
2264 avctx->pkt_timebase, AV_TIME_BASE_Q);
2265 ret = avctx->codec->decode(avctx, sub, got_sub_ptr, &pkt_recoded);
2266 av_assert1((ret >= 0) >= !!*got_sub_ptr &&
2267 !!*got_sub_ptr >= !!sub->num_rects);
2269 if (sub->num_rects && !sub->end_display_time && avpkt->duration &&
2270 avctx->pkt_timebase.num) {
2271 AVRational ms = { 1, 1000 };
2272 sub->end_display_time = av_rescale_q(avpkt->duration,
2273 avctx->pkt_timebase, ms);
2276 for (i = 0; i < sub->num_rects; i++) {
2277 if (sub->rects[i]->ass && !utf8_check(sub->rects[i]->ass)) {
2278 av_log(avctx, AV_LOG_ERROR,
2279 "Invalid UTF-8 in decoded subtitles text; "
2280 "maybe missing -sub_charenc option\n");
2281 avsubtitle_free(sub);
2282 return AVERROR_INVALIDDATA;
2286 if (tmp.data != pkt_recoded.data) { // did we recode?
2287 /* prevent from destroying side data from original packet */
2288 pkt_recoded.side_data = NULL;
2289 pkt_recoded.side_data_elems = 0;
2291 av_free_packet(&pkt_recoded);
2293 sub->format = !(avctx->codec_descriptor->props & AV_CODEC_PROP_BITMAP_SUB);
2298 ff_packet_free_side_data(&tmp);
2304 avctx->frame_number++;
2310 void avsubtitle_free(AVSubtitle *sub)
2314 for (i = 0; i < sub->num_rects; i++) {
2315 av_freep(&sub->rects[i]->pict.data[0]);
2316 av_freep(&sub->rects[i]->pict.data[1]);
2317 av_freep(&sub->rects[i]->pict.data[2]);
2318 av_freep(&sub->rects[i]->pict.data[3]);
2319 av_freep(&sub->rects[i]->text);
2320 av_freep(&sub->rects[i]->ass);
2321 av_freep(&sub->rects[i]);
2324 av_freep(&sub->rects);
2326 memset(sub, 0, sizeof(AVSubtitle));
2329 av_cold int ff_codec_close_recursive(AVCodecContext *avctx)
2333 ff_unlock_avcodec();
2335 ret = avcodec_close(avctx);
2337 ff_lock_avcodec(NULL);
2341 av_cold int avcodec_close(AVCodecContext *avctx)
2343 int ret = ff_lock_avcodec(avctx);
2347 if (avcodec_is_open(avctx)) {
2348 FramePool *pool = avctx->internal->pool;
2350 if (CONFIG_FRAME_THREAD_ENCODER &&
2351 avctx->internal->frame_thread_encoder && avctx->thread_count > 1) {
2352 ff_unlock_avcodec();
2353 ff_frame_thread_encoder_free(avctx);
2354 ff_lock_avcodec(avctx);
2356 if (HAVE_THREADS && avctx->thread_opaque)
2357 ff_thread_free(avctx);
2358 if (avctx->codec && avctx->codec->close)
2359 avctx->codec->close(avctx);
2360 avctx->coded_frame = NULL;
2361 avctx->internal->byte_buffer_size = 0;
2362 av_freep(&avctx->internal->byte_buffer);
2363 if (!avctx->refcounted_frames)
2364 av_frame_unref(&avctx->internal->to_free);
2365 for (i = 0; i < FF_ARRAY_ELEMS(pool->pools); i++)
2366 av_buffer_pool_uninit(&pool->pools[i]);
2367 av_freep(&avctx->internal->pool);
2368 av_freep(&avctx->internal);
2371 if (avctx->priv_data && avctx->codec && avctx->codec->priv_class)
2372 av_opt_free(avctx->priv_data);
2374 av_freep(&avctx->priv_data);
2375 if (av_codec_is_encoder(avctx->codec))
2376 av_freep(&avctx->extradata);
2377 avctx->codec = NULL;
2378 avctx->active_thread_type = 0;
2380 ff_unlock_avcodec();
2384 static enum AVCodecID remap_deprecated_codec_id(enum AVCodecID id)
2387 //This is for future deprecatec codec ids, its empty since
2388 //last major bump but will fill up again over time, please don't remove it
2389 // case AV_CODEC_ID_UTVIDEO_DEPRECATED: return AV_CODEC_ID_UTVIDEO;
2390 case AV_CODEC_ID_OPUS_DEPRECATED: return AV_CODEC_ID_OPUS;
2391 case AV_CODEC_ID_TAK_DEPRECATED : return AV_CODEC_ID_TAK;
2392 default : return id;
2396 static AVCodec *find_encdec(enum AVCodecID id, int encoder)
2398 AVCodec *p, *experimental = NULL;
2400 id= remap_deprecated_codec_id(id);
2402 if ((encoder ? av_codec_is_encoder(p) : av_codec_is_decoder(p)) &&
2404 if (p->capabilities & CODEC_CAP_EXPERIMENTAL && !experimental) {
2411 return experimental;
2414 AVCodec *avcodec_find_encoder(enum AVCodecID id)
2416 return find_encdec(id, 1);
2419 AVCodec *avcodec_find_encoder_by_name(const char *name)
2426 if (av_codec_is_encoder(p) && strcmp(name, p->name) == 0)
2433 AVCodec *avcodec_find_decoder(enum AVCodecID id)
2435 return find_encdec(id, 0);
2438 AVCodec *avcodec_find_decoder_by_name(const char *name)
2445 if (av_codec_is_decoder(p) && strcmp(name, p->name) == 0)
2452 const char *avcodec_get_name(enum AVCodecID id)
2454 const AVCodecDescriptor *cd;
2457 if (id == AV_CODEC_ID_NONE)
2459 cd = avcodec_descriptor_get(id);
2462 av_log(NULL, AV_LOG_WARNING, "Codec 0x%x is not in the full list.\n", id);
2463 codec = avcodec_find_decoder(id);
2466 codec = avcodec_find_encoder(id);
2469 return "unknown_codec";
2472 size_t av_get_codec_tag_string(char *buf, size_t buf_size, unsigned int codec_tag)
2474 int i, len, ret = 0;
2476 #define TAG_PRINT(x) \
2477 (((x) >= '0' && (x) <= '9') || \
2478 ((x) >= 'a' && (x) <= 'z') || ((x) >= 'A' && (x) <= 'Z') || \
2479 ((x) == '.' || (x) == ' ' || (x) == '-' || (x) == '_'))
2481 for (i = 0; i < 4; i++) {
2482 len = snprintf(buf, buf_size,
2483 TAG_PRINT(codec_tag & 0xFF) ? "%c" : "[%d]", codec_tag & 0xFF);
2485 buf_size = buf_size > len ? buf_size - len : 0;
2492 void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode)
2494 const char *codec_type;
2495 const char *codec_name;
2496 const char *profile = NULL;
2499 AVRational display_aspect_ratio;
2501 if (!buf || buf_size <= 0)
2503 codec_type = av_get_media_type_string(enc->codec_type);
2504 codec_name = avcodec_get_name(enc->codec_id);
2505 if (enc->profile != FF_PROFILE_UNKNOWN) {
2509 p = encode ? avcodec_find_encoder(enc->codec_id) :
2510 avcodec_find_decoder(enc->codec_id);
2512 profile = av_get_profile_name(p, enc->profile);
2515 snprintf(buf, buf_size, "%s: %s", codec_type ? codec_type : "unknown",
2517 buf[0] ^= 'a' ^ 'A'; /* first letter in uppercase */
2519 if (enc->codec && strcmp(enc->codec->name, codec_name))
2520 snprintf(buf + strlen(buf), buf_size - strlen(buf), " (%s)", enc->codec->name);
2523 snprintf(buf + strlen(buf), buf_size - strlen(buf), " (%s)", profile);
2524 if (enc->codec_tag) {
2526 av_get_codec_tag_string(tag_buf, sizeof(tag_buf), enc->codec_tag);
2527 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2528 " (%s / 0x%04X)", tag_buf, enc->codec_tag);
2531 switch (enc->codec_type) {
2532 case AVMEDIA_TYPE_VIDEO:
2533 if (enc->pix_fmt != AV_PIX_FMT_NONE) {
2534 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2536 av_get_pix_fmt_name(enc->pix_fmt));
2537 if (enc->bits_per_raw_sample &&
2538 enc->bits_per_raw_sample <= av_pix_fmt_desc_get(enc->pix_fmt)->comp[0].depth_minus1)
2539 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2540 " (%d bpc)", enc->bits_per_raw_sample);
2543 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2545 enc->width, enc->height);
2546 if (enc->sample_aspect_ratio.num) {
2547 av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,
2548 enc->width * enc->sample_aspect_ratio.num,
2549 enc->height * enc->sample_aspect_ratio.den,
2551 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2552 " [SAR %d:%d DAR %d:%d]",
2553 enc->sample_aspect_ratio.num, enc->sample_aspect_ratio.den,
2554 display_aspect_ratio.num, display_aspect_ratio.den);
2556 if (av_log_get_level() >= AV_LOG_DEBUG) {
2557 int g = av_gcd(enc->time_base.num, enc->time_base.den);
2558 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2560 enc->time_base.num / g, enc->time_base.den / g);
2564 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2565 ", q=%d-%d", enc->qmin, enc->qmax);
2568 case AVMEDIA_TYPE_AUDIO:
2569 if (enc->sample_rate) {
2570 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2571 ", %d Hz", enc->sample_rate);
2573 av_strlcat(buf, ", ", buf_size);
2574 av_get_channel_layout_string(buf + strlen(buf), buf_size - strlen(buf), enc->channels, enc->channel_layout);
2575 if (enc->sample_fmt != AV_SAMPLE_FMT_NONE) {
2576 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2577 ", %s", av_get_sample_fmt_name(enc->sample_fmt));
2580 case AVMEDIA_TYPE_DATA:
2581 if (av_log_get_level() >= AV_LOG_DEBUG) {
2582 int g = av_gcd(enc->time_base.num, enc->time_base.den);
2584 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2586 enc->time_base.num / g, enc->time_base.den / g);
2593 if (enc->flags & CODEC_FLAG_PASS1)
2594 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2596 if (enc->flags & CODEC_FLAG_PASS2)
2597 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2600 bitrate = get_bit_rate(enc);
2602 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2603 ", %d kb/s", bitrate / 1000);
2607 const char *av_get_profile_name(const AVCodec *codec, int profile)
2610 if (profile == FF_PROFILE_UNKNOWN || !codec->profiles)
2613 for (p = codec->profiles; p->profile != FF_PROFILE_UNKNOWN; p++)
2614 if (p->profile == profile)
2620 unsigned avcodec_version(void)
2622 // av_assert0(AV_CODEC_ID_V410==164);
2623 av_assert0(AV_CODEC_ID_PCM_S8_PLANAR==65563);
2624 av_assert0(AV_CODEC_ID_ADPCM_G722==69660);
2625 // av_assert0(AV_CODEC_ID_BMV_AUDIO==86071);
2626 av_assert0(AV_CODEC_ID_SRT==94216);
2627 av_assert0(LIBAVCODEC_VERSION_MICRO >= 100);
2629 av_assert0(CODEC_ID_CLLC == AV_CODEC_ID_CLLC);
2630 av_assert0(CODEC_ID_PCM_S8_PLANAR == AV_CODEC_ID_PCM_S8_PLANAR);
2631 av_assert0(CODEC_ID_ADPCM_IMA_APC == AV_CODEC_ID_ADPCM_IMA_APC);
2632 av_assert0(CODEC_ID_ILBC == AV_CODEC_ID_ILBC);
2633 av_assert0(CODEC_ID_SRT == AV_CODEC_ID_SRT);
2634 return LIBAVCODEC_VERSION_INT;
2637 const char *avcodec_configuration(void)
2639 return FFMPEG_CONFIGURATION;
2642 const char *avcodec_license(void)
2644 #define LICENSE_PREFIX "libavcodec license: "
2645 return LICENSE_PREFIX FFMPEG_LICENSE + sizeof(LICENSE_PREFIX) - 1;
2648 void avcodec_flush_buffers(AVCodecContext *avctx)
2650 if (HAVE_THREADS && avctx->active_thread_type & FF_THREAD_FRAME)
2651 ff_thread_flush(avctx);
2652 else if (avctx->codec->flush)
2653 avctx->codec->flush(avctx);
2655 avctx->pts_correction_last_pts =
2656 avctx->pts_correction_last_dts = INT64_MIN;
2659 int av_get_exact_bits_per_sample(enum AVCodecID codec_id)
2662 case AV_CODEC_ID_8SVX_EXP:
2663 case AV_CODEC_ID_8SVX_FIB:
2664 case AV_CODEC_ID_ADPCM_CT:
2665 case AV_CODEC_ID_ADPCM_IMA_APC:
2666 case AV_CODEC_ID_ADPCM_IMA_EA_SEAD:
2667 case AV_CODEC_ID_ADPCM_IMA_OKI:
2668 case AV_CODEC_ID_ADPCM_IMA_WS:
2669 case AV_CODEC_ID_ADPCM_G722:
2670 case AV_CODEC_ID_ADPCM_YAMAHA:
2672 case AV_CODEC_ID_PCM_ALAW:
2673 case AV_CODEC_ID_PCM_MULAW:
2674 case AV_CODEC_ID_PCM_S8:
2675 case AV_CODEC_ID_PCM_S8_PLANAR:
2676 case AV_CODEC_ID_PCM_U8:
2677 case AV_CODEC_ID_PCM_ZORK:
2679 case AV_CODEC_ID_PCM_S16BE:
2680 case AV_CODEC_ID_PCM_S16BE_PLANAR:
2681 case AV_CODEC_ID_PCM_S16LE:
2682 case AV_CODEC_ID_PCM_S16LE_PLANAR:
2683 case AV_CODEC_ID_PCM_U16BE:
2684 case AV_CODEC_ID_PCM_U16LE:
2686 case AV_CODEC_ID_PCM_S24DAUD:
2687 case AV_CODEC_ID_PCM_S24BE:
2688 case AV_CODEC_ID_PCM_S24LE:
2689 case AV_CODEC_ID_PCM_S24LE_PLANAR:
2690 case AV_CODEC_ID_PCM_U24BE:
2691 case AV_CODEC_ID_PCM_U24LE:
2693 case AV_CODEC_ID_PCM_S32BE:
2694 case AV_CODEC_ID_PCM_S32LE:
2695 case AV_CODEC_ID_PCM_S32LE_PLANAR:
2696 case AV_CODEC_ID_PCM_U32BE:
2697 case AV_CODEC_ID_PCM_U32LE:
2698 case AV_CODEC_ID_PCM_F32BE:
2699 case AV_CODEC_ID_PCM_F32LE:
2701 case AV_CODEC_ID_PCM_F64BE:
2702 case AV_CODEC_ID_PCM_F64LE:
2709 enum AVCodecID av_get_pcm_codec(enum AVSampleFormat fmt, int be)
2711 static const enum AVCodecID map[AV_SAMPLE_FMT_NB][2] = {
2712 [AV_SAMPLE_FMT_U8 ] = { AV_CODEC_ID_PCM_U8, AV_CODEC_ID_PCM_U8 },
2713 [AV_SAMPLE_FMT_S16 ] = { AV_CODEC_ID_PCM_S16LE, AV_CODEC_ID_PCM_S16BE },
2714 [AV_SAMPLE_FMT_S32 ] = { AV_CODEC_ID_PCM_S32LE, AV_CODEC_ID_PCM_S32BE },
2715 [AV_SAMPLE_FMT_FLT ] = { AV_CODEC_ID_PCM_F32LE, AV_CODEC_ID_PCM_F32BE },
2716 [AV_SAMPLE_FMT_DBL ] = { AV_CODEC_ID_PCM_F64LE, AV_CODEC_ID_PCM_F64BE },
2717 [AV_SAMPLE_FMT_U8P ] = { AV_CODEC_ID_PCM_U8, AV_CODEC_ID_PCM_U8 },
2718 [AV_SAMPLE_FMT_S16P] = { AV_CODEC_ID_PCM_S16LE, AV_CODEC_ID_PCM_S16BE },
2719 [AV_SAMPLE_FMT_S32P] = { AV_CODEC_ID_PCM_S32LE, AV_CODEC_ID_PCM_S32BE },
2720 [AV_SAMPLE_FMT_FLTP] = { AV_CODEC_ID_PCM_F32LE, AV_CODEC_ID_PCM_F32BE },
2721 [AV_SAMPLE_FMT_DBLP] = { AV_CODEC_ID_PCM_F64LE, AV_CODEC_ID_PCM_F64BE },
2723 if (fmt < 0 || fmt >= AV_SAMPLE_FMT_NB)
2724 return AV_CODEC_ID_NONE;
2725 if (be < 0 || be > 1)
2727 return map[fmt][be];
2730 int av_get_bits_per_sample(enum AVCodecID codec_id)
2733 case AV_CODEC_ID_ADPCM_SBPRO_2:
2735 case AV_CODEC_ID_ADPCM_SBPRO_3:
2737 case AV_CODEC_ID_ADPCM_SBPRO_4:
2738 case AV_CODEC_ID_ADPCM_IMA_WAV:
2739 case AV_CODEC_ID_ADPCM_IMA_QT:
2740 case AV_CODEC_ID_ADPCM_SWF:
2741 case AV_CODEC_ID_ADPCM_MS:
2744 return av_get_exact_bits_per_sample(codec_id);
2748 int av_get_audio_frame_duration(AVCodecContext *avctx, int frame_bytes)
2750 int id, sr, ch, ba, tag, bps;
2752 id = avctx->codec_id;
2753 sr = avctx->sample_rate;
2754 ch = avctx->channels;
2755 ba = avctx->block_align;
2756 tag = avctx->codec_tag;
2757 bps = av_get_exact_bits_per_sample(avctx->codec_id);
2759 /* codecs with an exact constant bits per sample */
2760 if (bps > 0 && ch > 0 && frame_bytes > 0 && ch < 32768 && bps < 32768)
2761 return (frame_bytes * 8LL) / (bps * ch);
2762 bps = avctx->bits_per_coded_sample;
2764 /* codecs with a fixed packet duration */
2766 case AV_CODEC_ID_ADPCM_ADX: return 32;
2767 case AV_CODEC_ID_ADPCM_IMA_QT: return 64;
2768 case AV_CODEC_ID_ADPCM_EA_XAS: return 128;
2769 case AV_CODEC_ID_AMR_NB:
2770 case AV_CODEC_ID_EVRC:
2771 case AV_CODEC_ID_GSM:
2772 case AV_CODEC_ID_QCELP:
2773 case AV_CODEC_ID_RA_288: return 160;
2774 case AV_CODEC_ID_AMR_WB:
2775 case AV_CODEC_ID_GSM_MS: return 320;
2776 case AV_CODEC_ID_MP1: return 384;
2777 case AV_CODEC_ID_ATRAC1: return 512;
2778 case AV_CODEC_ID_ATRAC3: return 1024;
2779 case AV_CODEC_ID_MP2:
2780 case AV_CODEC_ID_MUSEPACK7: return 1152;
2781 case AV_CODEC_ID_AC3: return 1536;
2785 /* calc from sample rate */
2786 if (id == AV_CODEC_ID_TTA)
2787 return 256 * sr / 245;
2790 /* calc from sample rate and channels */
2791 if (id == AV_CODEC_ID_BINKAUDIO_DCT)
2792 return (480 << (sr / 22050)) / ch;
2797 /* calc from block_align */
2798 if (id == AV_CODEC_ID_SIPR) {
2800 case 20: return 160;
2801 case 19: return 144;
2802 case 29: return 288;
2803 case 37: return 480;
2805 } else if (id == AV_CODEC_ID_ILBC) {
2807 case 38: return 160;
2808 case 50: return 240;
2813 if (frame_bytes > 0) {
2814 /* calc from frame_bytes only */
2815 if (id == AV_CODEC_ID_TRUESPEECH)
2816 return 240 * (frame_bytes / 32);
2817 if (id == AV_CODEC_ID_NELLYMOSER)
2818 return 256 * (frame_bytes / 64);
2819 if (id == AV_CODEC_ID_RA_144)
2820 return 160 * (frame_bytes / 20);
2821 if (id == AV_CODEC_ID_G723_1)
2822 return 240 * (frame_bytes / 24);
2825 /* calc from frame_bytes and bits_per_coded_sample */
2826 if (id == AV_CODEC_ID_ADPCM_G726)
2827 return frame_bytes * 8 / bps;
2831 /* calc from frame_bytes and channels */
2833 case AV_CODEC_ID_ADPCM_AFC:
2834 return frame_bytes / (9 * ch) * 16;
2835 case AV_CODEC_ID_ADPCM_4XM:
2836 case AV_CODEC_ID_ADPCM_IMA_ISS:
2837 return (frame_bytes - 4 * ch) * 2 / ch;
2838 case AV_CODEC_ID_ADPCM_IMA_SMJPEG:
2839 return (frame_bytes - 4) * 2 / ch;
2840 case AV_CODEC_ID_ADPCM_IMA_AMV:
2841 return (frame_bytes - 8) * 2 / ch;
2842 case AV_CODEC_ID_ADPCM_XA:
2843 return (frame_bytes / 128) * 224 / ch;
2844 case AV_CODEC_ID_INTERPLAY_DPCM:
2845 return (frame_bytes - 6 - ch) / ch;
2846 case AV_CODEC_ID_ROQ_DPCM:
2847 return (frame_bytes - 8) / ch;
2848 case AV_CODEC_ID_XAN_DPCM:
2849 return (frame_bytes - 2 * ch) / ch;
2850 case AV_CODEC_ID_MACE3:
2851 return 3 * frame_bytes / ch;
2852 case AV_CODEC_ID_MACE6:
2853 return 6 * frame_bytes / ch;
2854 case AV_CODEC_ID_PCM_LXF:
2855 return 2 * (frame_bytes / (5 * ch));
2856 case AV_CODEC_ID_IAC:
2857 case AV_CODEC_ID_IMC:
2858 return 4 * frame_bytes / ch;
2862 /* calc from frame_bytes, channels, and codec_tag */
2863 if (id == AV_CODEC_ID_SOL_DPCM) {
2865 return frame_bytes / ch;
2867 return frame_bytes * 2 / ch;
2872 /* calc from frame_bytes, channels, and block_align */
2873 int blocks = frame_bytes / ba;
2874 switch (avctx->codec_id) {
2875 case AV_CODEC_ID_ADPCM_IMA_WAV:
2876 return blocks * (1 + (ba - 4 * ch) / (4 * ch) * 8);
2877 case AV_CODEC_ID_ADPCM_IMA_DK3:
2878 return blocks * (((ba - 16) * 2 / 3 * 4) / ch);
2879 case AV_CODEC_ID_ADPCM_IMA_DK4:
2880 return blocks * (1 + (ba - 4 * ch) * 2 / ch);
2881 case AV_CODEC_ID_ADPCM_MS:
2882 return blocks * (2 + (ba - 7 * ch) * 2 / ch);
2887 /* calc from frame_bytes, channels, and bits_per_coded_sample */
2888 switch (avctx->codec_id) {
2889 case AV_CODEC_ID_PCM_DVD:
2892 return 2 * (frame_bytes / ((bps * 2 / 8) * ch));
2893 case AV_CODEC_ID_PCM_BLURAY:
2896 return frame_bytes / ((FFALIGN(ch, 2) * bps) / 8);
2897 case AV_CODEC_ID_S302M:
2898 return 2 * (frame_bytes / ((bps + 4) / 4)) / ch;
2908 int ff_thread_init(AVCodecContext *s)
2915 unsigned int av_xiphlacing(unsigned char *s, unsigned int v)
2929 int ff_match_2uint16(const uint16_t(*tab)[2], int size, int a, int b)
2932 for (i = 0; i < size && !(tab[i][0] == a && tab[i][1] == b); i++) ;
2936 #if FF_API_MISSING_SAMPLE
2937 void av_log_missing_feature(void *avc, const char *feature, int want_sample)
2939 av_log(avc, AV_LOG_WARNING, "%s is not implemented. Update your FFmpeg "
2940 "version to the newest one from Git. If the problem still "
2941 "occurs, it means that your file has a feature which has not "
2942 "been implemented.\n", feature);
2944 av_log_ask_for_sample(avc, NULL);
2947 void av_log_ask_for_sample(void *avc, const char *msg, ...)
2949 va_list argument_list;
2951 va_start(argument_list, msg);
2954 av_vlog(avc, AV_LOG_WARNING, msg, argument_list);
2955 av_log(avc, AV_LOG_WARNING, "If you want to help, upload a sample "
2956 "of this file to ftp://upload.ffmpeg.org/MPlayer/incoming/ "
2957 "and contact the ffmpeg-devel mailing list.\n");
2959 va_end(argument_list);
2961 #endif /* FF_API_MISSING_SAMPLE */
2963 static AVHWAccel *first_hwaccel = NULL;
2965 void av_register_hwaccel(AVHWAccel *hwaccel)
2967 AVHWAccel **p = &first_hwaccel;
2971 hwaccel->next = NULL;
2974 AVHWAccel *av_hwaccel_next(AVHWAccel *hwaccel)
2976 return hwaccel ? hwaccel->next : first_hwaccel;
2979 AVHWAccel *ff_find_hwaccel(enum AVCodecID codec_id, enum AVPixelFormat pix_fmt)
2981 AVHWAccel *hwaccel = NULL;
2983 while ((hwaccel = av_hwaccel_next(hwaccel)))
2984 if (hwaccel->id == codec_id
2985 && hwaccel->pix_fmt == pix_fmt)
2990 int av_lockmgr_register(int (*cb)(void **mutex, enum AVLockOp op))
2993 if (lockmgr_cb(&codec_mutex, AV_LOCK_DESTROY))
2995 if (lockmgr_cb(&avformat_mutex, AV_LOCK_DESTROY))
3002 if (lockmgr_cb(&codec_mutex, AV_LOCK_CREATE))
3004 if (lockmgr_cb(&avformat_mutex, AV_LOCK_CREATE))
3010 int ff_lock_avcodec(AVCodecContext *log_ctx)
3013 if ((*lockmgr_cb)(&codec_mutex, AV_LOCK_OBTAIN))
3016 entangled_thread_counter++;
3017 if (entangled_thread_counter != 1) {
3018 av_log(log_ctx, AV_LOG_ERROR, "Insufficient thread locking around avcodec_open/close()\n");
3019 ff_avcodec_locked = 1;
3020 ff_unlock_avcodec();
3021 return AVERROR(EINVAL);
3023 av_assert0(!ff_avcodec_locked);
3024 ff_avcodec_locked = 1;
3028 int ff_unlock_avcodec(void)
3030 av_assert0(ff_avcodec_locked);
3031 ff_avcodec_locked = 0;
3032 entangled_thread_counter--;
3034 if ((*lockmgr_cb)(&codec_mutex, AV_LOCK_RELEASE))
3040 int avpriv_lock_avformat(void)
3043 if ((*lockmgr_cb)(&avformat_mutex, AV_LOCK_OBTAIN))
3049 int avpriv_unlock_avformat(void)
3052 if ((*lockmgr_cb)(&avformat_mutex, AV_LOCK_RELEASE))
3058 unsigned int avpriv_toupper4(unsigned int x)
3060 return av_toupper(x & 0xFF) +
3061 (av_toupper((x >> 8) & 0xFF) << 8) +
3062 (av_toupper((x >> 16) & 0xFF) << 16) +
3063 (av_toupper((x >> 24) & 0xFF) << 24);
3066 int ff_thread_ref_frame(ThreadFrame *dst, ThreadFrame *src)
3070 dst->owner = src->owner;
3072 ret = av_frame_ref(dst->f, src->f);
3076 if (src->progress &&
3077 !(dst->progress = av_buffer_ref(src->progress))) {
3078 ff_thread_release_buffer(dst->owner, dst);
3079 return AVERROR(ENOMEM);
3087 enum AVPixelFormat ff_thread_get_format(AVCodecContext *avctx, const enum AVPixelFormat *fmt)
3089 return avctx->get_format(avctx, fmt);
3092 int ff_thread_get_buffer(AVCodecContext *avctx, ThreadFrame *f, int flags)
3095 return ff_get_buffer(avctx, f->f, flags);
3098 void ff_thread_release_buffer(AVCodecContext *avctx, ThreadFrame *f)
3100 av_frame_unref(f->f);
3103 void ff_thread_finish_setup(AVCodecContext *avctx)
3107 void ff_thread_report_progress(ThreadFrame *f, int progress, int field)
3111 void ff_thread_await_progress(ThreadFrame *f, int progress, int field)
3115 int ff_thread_can_start_frame(AVCodecContext *avctx)
3122 enum AVMediaType avcodec_get_type(enum AVCodecID codec_id)
3124 AVCodec *c= avcodec_find_decoder(codec_id);
3126 c= avcodec_find_encoder(codec_id);
3130 if (codec_id <= AV_CODEC_ID_NONE)
3131 return AVMEDIA_TYPE_UNKNOWN;
3132 else if (codec_id < AV_CODEC_ID_FIRST_AUDIO)
3133 return AVMEDIA_TYPE_VIDEO;
3134 else if (codec_id < AV_CODEC_ID_FIRST_SUBTITLE)
3135 return AVMEDIA_TYPE_AUDIO;
3136 else if (codec_id < AV_CODEC_ID_FIRST_UNKNOWN)
3137 return AVMEDIA_TYPE_SUBTITLE;
3139 return AVMEDIA_TYPE_UNKNOWN;
3142 int avcodec_is_open(AVCodecContext *s)
3144 return !!s->internal;
3147 int avpriv_bprint_to_extradata(AVCodecContext *avctx, struct AVBPrint *buf)
3152 ret = av_bprint_finalize(buf, &str);
3155 avctx->extradata = str;
3156 /* Note: the string is NUL terminated (so extradata can be read as a
3157 * string), but the ending character is not accounted in the size (in
3158 * binary formats you are likely not supposed to mux that character). When
3159 * extradata is copied, it is also padded with FF_INPUT_BUFFER_PADDING_SIZE
3161 avctx->extradata_size = buf->len;
3165 const uint8_t *avpriv_find_start_code(const uint8_t *av_restrict p,
3167 uint32_t *av_restrict state)
3175 for (i = 0; i < 3; i++) {
3176 uint32_t tmp = *state << 8;
3177 *state = tmp + *(p++);
3178 if (tmp == 0x100 || p == end)
3183 if (p[-1] > 1 ) p += 3;
3184 else if (p[-2] ) p += 2;
3185 else if (p[-3]|(p[-1]-1)) p++;
3192 p = FFMIN(p, end) - 4;
3193 *state = AV_RB32(p);