3 * Copyright (c) 2001 Fabrice Bellard
4 * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
6 * This file is part of Libav.
8 * Libav 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 * Libav 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 Libav; 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/channel_layout.h"
33 #include "libavutil/crc.h"
34 #include "libavutil/frame.h"
35 #include "libavutil/internal.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"
43 #include "libavutil/opt.h"
46 #include "bytestream.h"
53 static int volatile entangled_thread_counter = 0;
54 static int (*lockmgr_cb)(void **mutex, enum AVLockOp op);
55 static void *codec_mutex;
56 static void *avformat_mutex;
58 #if FF_API_FAST_MALLOC && CONFIG_SHARED && HAVE_SYMVER
59 FF_SYMVER(void*, av_fast_realloc, (void *ptr, unsigned int *size, size_t min_size), "LIBAVCODEC_55")
61 return av_fast_realloc(ptr, size, min_size);
64 FF_SYMVER(void, av_fast_malloc, (void *ptr, unsigned int *size, size_t min_size), "LIBAVCODEC_55")
66 av_fast_malloc(ptr, size, min_size);
70 void av_fast_padded_malloc(void *ptr, unsigned int *size, size_t min_size)
73 if (min_size > SIZE_MAX - FF_INPUT_BUFFER_PADDING_SIZE) {
78 av_fast_malloc(p, size, min_size + FF_INPUT_BUFFER_PADDING_SIZE);
80 memset((uint8_t *)*p + min_size, 0, FF_INPUT_BUFFER_PADDING_SIZE);
83 /* encoder management */
84 static AVCodec *first_avcodec = NULL;
86 AVCodec *av_codec_next(const AVCodec *c)
94 static av_cold void avcodec_init(void)
96 static int initialized = 0;
103 ff_dsputil_static_init();
106 int av_codec_is_encoder(const AVCodec *codec)
108 return codec && (codec->encode_sub || codec->encode2);
111 int av_codec_is_decoder(const AVCodec *codec)
113 return codec && codec->decode;
116 av_cold void avcodec_register(AVCodec *codec)
126 if (codec->init_static_data)
127 codec->init_static_data(codec);
131 unsigned avcodec_get_edge_width(void)
137 #if FF_API_SET_DIMENSIONS
138 void avcodec_set_dimensions(AVCodecContext *s, int width, int height)
140 ff_set_dimensions(s, width, height);
144 int ff_set_dimensions(AVCodecContext *s, int width, int height)
146 int ret = av_image_check_size(width, height, 0, s);
150 s->width = s->coded_width = width;
151 s->height = s->coded_height = height;
156 int ff_side_data_update_matrix_encoding(AVFrame *frame,
157 enum AVMatrixEncoding matrix_encoding)
159 AVFrameSideData *side_data;
160 enum AVMatrixEncoding *data;
162 side_data = av_frame_get_side_data(frame, AV_FRAME_DATA_MATRIXENCODING);
164 side_data = av_frame_new_side_data(frame, AV_FRAME_DATA_MATRIXENCODING,
165 sizeof(enum AVMatrixEncoding));
168 return AVERROR(ENOMEM);
170 data = (enum AVMatrixEncoding*)side_data->data;
171 *data = matrix_encoding;
176 #if HAVE_NEON || ARCH_PPC || HAVE_MMX
177 # define STRIDE_ALIGN 16
179 # define STRIDE_ALIGN 8
182 void avcodec_align_dimensions2(AVCodecContext *s, int *width, int *height,
183 int linesize_align[AV_NUM_DATA_POINTERS])
189 switch (s->pix_fmt) {
190 case AV_PIX_FMT_YUV420P:
191 case AV_PIX_FMT_YUYV422:
192 case AV_PIX_FMT_UYVY422:
193 case AV_PIX_FMT_YUV422P:
194 case AV_PIX_FMT_YUV440P:
195 case AV_PIX_FMT_YUV444P:
196 case AV_PIX_FMT_GBRP:
197 case AV_PIX_FMT_GRAY8:
198 case AV_PIX_FMT_GRAY16BE:
199 case AV_PIX_FMT_GRAY16LE:
200 case AV_PIX_FMT_YUVJ420P:
201 case AV_PIX_FMT_YUVJ422P:
202 case AV_PIX_FMT_YUVJ440P:
203 case AV_PIX_FMT_YUVJ444P:
204 case AV_PIX_FMT_YUVA420P:
205 case AV_PIX_FMT_YUVA422P:
206 case AV_PIX_FMT_YUVA444P:
207 case AV_PIX_FMT_YUV420P9LE:
208 case AV_PIX_FMT_YUV420P9BE:
209 case AV_PIX_FMT_YUV420P10LE:
210 case AV_PIX_FMT_YUV420P10BE:
211 case AV_PIX_FMT_YUV422P9LE:
212 case AV_PIX_FMT_YUV422P9BE:
213 case AV_PIX_FMT_YUV422P10LE:
214 case AV_PIX_FMT_YUV422P10BE:
215 case AV_PIX_FMT_YUVA422P10LE:
216 case AV_PIX_FMT_YUVA422P10BE:
217 case AV_PIX_FMT_YUV444P9LE:
218 case AV_PIX_FMT_YUV444P9BE:
219 case AV_PIX_FMT_YUV444P10LE:
220 case AV_PIX_FMT_YUV444P10BE:
221 case AV_PIX_FMT_YUVA444P10LE:
222 case AV_PIX_FMT_YUVA444P10BE:
223 case AV_PIX_FMT_GBRP9LE:
224 case AV_PIX_FMT_GBRP9BE:
225 case AV_PIX_FMT_GBRP10LE:
226 case AV_PIX_FMT_GBRP10BE:
227 w_align = 16; //FIXME assume 16 pixel per macroblock
228 h_align = 16 * 2; // interlaced needs 2 macroblocks height
230 case AV_PIX_FMT_YUV411P:
231 case AV_PIX_FMT_UYYVYY411:
235 case AV_PIX_FMT_YUV410P:
236 if (s->codec_id == AV_CODEC_ID_SVQ1) {
240 case AV_PIX_FMT_RGB555:
241 if (s->codec_id == AV_CODEC_ID_RPZA) {
245 case AV_PIX_FMT_PAL8:
246 case AV_PIX_FMT_BGR8:
247 case AV_PIX_FMT_RGB8:
248 if (s->codec_id == AV_CODEC_ID_SMC) {
253 case AV_PIX_FMT_BGR24:
254 if ((s->codec_id == AV_CODEC_ID_MSZH) ||
255 (s->codec_id == AV_CODEC_ID_ZLIB)) {
266 *width = FFALIGN(*width, w_align);
267 *height = FFALIGN(*height, h_align);
268 if (s->codec_id == AV_CODEC_ID_H264)
269 // some of the optimized chroma MC reads one line too much
272 for (i = 0; i < 4; i++)
273 linesize_align[i] = STRIDE_ALIGN;
276 void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height)
278 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(s->pix_fmt);
279 int chroma_shift = desc->log2_chroma_w;
280 int linesize_align[AV_NUM_DATA_POINTERS];
283 avcodec_align_dimensions2(s, width, height, linesize_align);
284 align = FFMAX(linesize_align[0], linesize_align[3]);
285 linesize_align[1] <<= chroma_shift;
286 linesize_align[2] <<= chroma_shift;
287 align = FFMAX3(align, linesize_align[1], linesize_align[2]);
288 *width = FFALIGN(*width, align);
291 int avcodec_fill_audio_frame(AVFrame *frame, int nb_channels,
292 enum AVSampleFormat sample_fmt, const uint8_t *buf,
293 int buf_size, int align)
295 int ch, planar, needed_size, ret = 0;
297 needed_size = av_samples_get_buffer_size(NULL, nb_channels,
298 frame->nb_samples, sample_fmt,
300 if (buf_size < needed_size)
301 return AVERROR(EINVAL);
303 planar = av_sample_fmt_is_planar(sample_fmt);
304 if (planar && nb_channels > AV_NUM_DATA_POINTERS) {
305 if (!(frame->extended_data = av_mallocz(nb_channels *
306 sizeof(*frame->extended_data))))
307 return AVERROR(ENOMEM);
309 frame->extended_data = frame->data;
312 if ((ret = av_samples_fill_arrays(frame->extended_data, &frame->linesize[0],
313 buf, nb_channels, frame->nb_samples,
314 sample_fmt, align)) < 0) {
315 if (frame->extended_data != frame->data)
316 av_free(frame->extended_data);
319 if (frame->extended_data != frame->data) {
320 for (ch = 0; ch < AV_NUM_DATA_POINTERS; ch++)
321 frame->data[ch] = frame->extended_data[ch];
327 static int update_frame_pool(AVCodecContext *avctx, AVFrame *frame)
329 FramePool *pool = avctx->internal->pool;
332 switch (avctx->codec_type) {
333 case AVMEDIA_TYPE_VIDEO: {
336 int w = frame->width;
337 int h = frame->height;
338 int tmpsize, unaligned;
340 if (pool->format == frame->format &&
341 pool->width == frame->width && pool->height == frame->height)
344 avcodec_align_dimensions2(avctx, &w, &h, pool->stride_align);
346 if (!(avctx->flags & CODEC_FLAG_EMU_EDGE)) {
352 // NOTE: do not align linesizes individually, this breaks e.g. assumptions
353 // that linesize[0] == 2*linesize[1] in the MPEG-encoder for 4:2:2
354 av_image_fill_linesizes(picture.linesize, avctx->pix_fmt, w);
355 // increase alignment of w for next try (rhs gives the lowest bit set in w)
359 for (i = 0; i < 4; i++)
360 unaligned |= picture.linesize[i] % pool->stride_align[i];
363 tmpsize = av_image_fill_pointers(picture.data, avctx->pix_fmt, h,
364 NULL, picture.linesize);
368 for (i = 0; i < 3 && picture.data[i + 1]; i++)
369 size[i] = picture.data[i + 1] - picture.data[i];
370 size[i] = tmpsize - (picture.data[i] - picture.data[0]);
372 for (i = 0; i < 4; i++) {
373 av_buffer_pool_uninit(&pool->pools[i]);
374 pool->linesize[i] = picture.linesize[i];
376 pool->pools[i] = av_buffer_pool_init(size[i] + 16, NULL);
377 if (!pool->pools[i]) {
378 ret = AVERROR(ENOMEM);
383 pool->format = frame->format;
384 pool->width = frame->width;
385 pool->height = frame->height;
389 case AVMEDIA_TYPE_AUDIO: {
390 int ch = av_get_channel_layout_nb_channels(frame->channel_layout);
391 int planar = av_sample_fmt_is_planar(frame->format);
392 int planes = planar ? ch : 1;
394 if (pool->format == frame->format && pool->planes == planes &&
395 pool->channels == ch && frame->nb_samples == pool->samples)
398 av_buffer_pool_uninit(&pool->pools[0]);
399 ret = av_samples_get_buffer_size(&pool->linesize[0], ch,
400 frame->nb_samples, frame->format, 0);
404 pool->pools[0] = av_buffer_pool_init(pool->linesize[0], NULL);
405 if (!pool->pools[0]) {
406 ret = AVERROR(ENOMEM);
410 pool->format = frame->format;
411 pool->planes = planes;
413 pool->samples = frame->nb_samples;
416 default: av_assert0(0);
420 for (i = 0; i < 4; i++)
421 av_buffer_pool_uninit(&pool->pools[i]);
423 pool->planes = pool->channels = pool->samples = 0;
424 pool->width = pool->height = 0;
428 static int audio_get_buffer(AVCodecContext *avctx, AVFrame *frame)
430 FramePool *pool = avctx->internal->pool;
431 int planes = pool->planes;
434 frame->linesize[0] = pool->linesize[0];
436 if (planes > AV_NUM_DATA_POINTERS) {
437 frame->extended_data = av_mallocz(planes * sizeof(*frame->extended_data));
438 frame->nb_extended_buf = planes - AV_NUM_DATA_POINTERS;
439 frame->extended_buf = av_mallocz(frame->nb_extended_buf *
440 sizeof(*frame->extended_buf));
441 if (!frame->extended_data || !frame->extended_buf) {
442 av_freep(&frame->extended_data);
443 av_freep(&frame->extended_buf);
444 return AVERROR(ENOMEM);
447 frame->extended_data = frame->data;
449 for (i = 0; i < FFMIN(planes, AV_NUM_DATA_POINTERS); i++) {
450 frame->buf[i] = av_buffer_pool_get(pool->pools[0]);
453 frame->extended_data[i] = frame->data[i] = frame->buf[i]->data;
455 for (i = 0; i < frame->nb_extended_buf; i++) {
456 frame->extended_buf[i] = av_buffer_pool_get(pool->pools[0]);
457 if (!frame->extended_buf[i])
459 frame->extended_data[i + AV_NUM_DATA_POINTERS] = frame->extended_buf[i]->data;
462 if (avctx->debug & FF_DEBUG_BUFFERS)
463 av_log(avctx, AV_LOG_DEBUG, "default_get_buffer called on frame %p", frame);
467 av_frame_unref(frame);
468 return AVERROR(ENOMEM);
471 static int video_get_buffer(AVCodecContext *s, AVFrame *pic)
473 FramePool *pool = s->internal->pool;
474 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pic->format);
475 int pixel_size = desc->comp[0].step_minus1 + 1;
476 int h_chroma_shift, v_chroma_shift;
479 if (pic->data[0] != NULL) {
480 av_log(s, AV_LOG_ERROR, "pic->data[0]!=NULL in avcodec_default_get_buffer\n");
484 memset(pic->data, 0, sizeof(pic->data));
485 pic->extended_data = pic->data;
487 av_pix_fmt_get_chroma_sub_sample(s->pix_fmt, &h_chroma_shift, &v_chroma_shift);
489 for (i = 0; i < 4 && pool->pools[i]; i++) {
490 const int h_shift = i == 0 ? 0 : h_chroma_shift;
491 const int v_shift = i == 0 ? 0 : v_chroma_shift;
493 pic->linesize[i] = pool->linesize[i];
495 pic->buf[i] = av_buffer_pool_get(pool->pools[i]);
499 // no edge if EDGE EMU or not planar YUV
500 if ((s->flags & CODEC_FLAG_EMU_EDGE) || !pool->pools[2])
501 pic->data[i] = pic->buf[i]->data;
503 pic->data[i] = pic->buf[i]->data +
504 FFALIGN((pic->linesize[i] * EDGE_WIDTH >> v_shift) +
505 (pixel_size * EDGE_WIDTH >> h_shift), pool->stride_align[i]);
508 for (; i < AV_NUM_DATA_POINTERS; i++) {
510 pic->linesize[i] = 0;
512 if (pic->data[1] && !pic->data[2])
513 avpriv_set_systematic_pal2((uint32_t *)pic->data[1], s->pix_fmt);
515 if (s->debug & FF_DEBUG_BUFFERS)
516 av_log(s, AV_LOG_DEBUG, "default_get_buffer called on pic %p\n", pic);
521 return AVERROR(ENOMEM);
524 int avcodec_default_get_buffer2(AVCodecContext *avctx, AVFrame *frame, int flags)
528 if ((ret = update_frame_pool(avctx, frame)) < 0)
531 #if FF_API_GET_BUFFER
532 FF_DISABLE_DEPRECATION_WARNINGS
533 frame->type = FF_BUFFER_TYPE_INTERNAL;
534 FF_ENABLE_DEPRECATION_WARNINGS
537 switch (avctx->codec_type) {
538 case AVMEDIA_TYPE_VIDEO:
539 return video_get_buffer(avctx, frame);
540 case AVMEDIA_TYPE_AUDIO:
541 return audio_get_buffer(avctx, frame);
547 #if FF_API_GET_BUFFER
548 FF_DISABLE_DEPRECATION_WARNINGS
549 int avcodec_default_get_buffer(AVCodecContext *avctx, AVFrame *frame)
551 return avcodec_default_get_buffer2(avctx, frame, 0);
554 typedef struct CompatReleaseBufPriv {
555 AVCodecContext avctx;
557 } CompatReleaseBufPriv;
559 static void compat_free_buffer(void *opaque, uint8_t *data)
561 CompatReleaseBufPriv *priv = opaque;
562 if (priv->avctx.release_buffer)
563 priv->avctx.release_buffer(&priv->avctx, &priv->frame);
567 static void compat_release_buffer(void *opaque, uint8_t *data)
569 AVBufferRef *buf = opaque;
570 av_buffer_unref(&buf);
572 FF_ENABLE_DEPRECATION_WARNINGS
575 int ff_get_buffer(AVCodecContext *avctx, AVFrame *frame, int flags)
577 int override_dimensions = 1;
580 switch (avctx->codec_type) {
581 case AVMEDIA_TYPE_VIDEO:
582 if (frame->width <= 0 || frame->height <= 0) {
583 frame->width = FFMAX(avctx->width, avctx->coded_width);
584 frame->height = FFMAX(avctx->height, avctx->coded_height);
585 override_dimensions = 0;
587 if (frame->format < 0)
588 frame->format = avctx->pix_fmt;
589 if (!frame->sample_aspect_ratio.num)
590 frame->sample_aspect_ratio = avctx->sample_aspect_ratio;
592 if ((ret = av_image_check_size(avctx->width, avctx->height, 0, avctx)) < 0)
595 case AVMEDIA_TYPE_AUDIO:
596 if (!frame->sample_rate)
597 frame->sample_rate = avctx->sample_rate;
598 if (frame->format < 0)
599 frame->format = avctx->sample_fmt;
600 if (!frame->channel_layout) {
601 if (avctx->channel_layout) {
602 if (av_get_channel_layout_nb_channels(avctx->channel_layout) !=
604 av_log(avctx, AV_LOG_ERROR, "Inconsistent channel "
606 return AVERROR(EINVAL);
609 frame->channel_layout = avctx->channel_layout;
611 if (avctx->channels > FF_SANE_NB_CHANNELS) {
612 av_log(avctx, AV_LOG_ERROR, "Too many channels: %d.\n",
614 return AVERROR(ENOSYS);
617 frame->channel_layout = av_get_default_channel_layout(avctx->channels);
618 if (!frame->channel_layout)
619 frame->channel_layout = (1ULL << avctx->channels) - 1;
623 default: return AVERROR(EINVAL);
626 frame->pkt_pts = avctx->internal->pkt ? avctx->internal->pkt->pts : AV_NOPTS_VALUE;
627 frame->reordered_opaque = avctx->reordered_opaque;
629 #if FF_API_GET_BUFFER
630 FF_DISABLE_DEPRECATION_WARNINGS
632 * Wrap an old get_buffer()-allocated buffer in an bunch of AVBuffers.
633 * We wrap each plane in its own AVBuffer. Each of those has a reference to
634 * a dummy AVBuffer as its private data, unreffing it on free.
635 * When all the planes are freed, the dummy buffer's free callback calls
638 if (avctx->get_buffer) {
639 CompatReleaseBufPriv *priv = NULL;
640 AVBufferRef *dummy_buf = NULL;
643 if (flags & AV_GET_BUFFER_FLAG_REF)
644 frame->reference = 1;
646 ret = avctx->get_buffer(avctx, frame);
650 /* return if the buffers are already set up
651 * this would happen e.g. when a custom get_buffer() calls
652 * avcodec_default_get_buffer
657 priv = av_mallocz(sizeof(*priv));
659 ret = AVERROR(ENOMEM);
662 priv->avctx = *avctx;
663 priv->frame = *frame;
665 dummy_buf = av_buffer_create(NULL, 0, compat_free_buffer, priv, 0);
667 ret = AVERROR(ENOMEM);
671 #define WRAP_PLANE(ref_out, data, data_size) \
673 AVBufferRef *dummy_ref = av_buffer_ref(dummy_buf); \
675 ret = AVERROR(ENOMEM); \
678 ref_out = av_buffer_create(data, data_size, compat_release_buffer, \
681 av_frame_unref(frame); \
682 ret = AVERROR(ENOMEM); \
687 if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
688 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(frame->format);
690 planes = av_pix_fmt_count_planes(frame->format);
691 /* workaround for AVHWAccel plane count of 0, buf[0] is used as
692 check for allocated buffers: make libavcodec happy */
693 if (desc && desc->flags & AV_PIX_FMT_FLAG_HWACCEL)
695 if (!desc || planes <= 0) {
696 ret = AVERROR(EINVAL);
700 for (i = 0; i < planes; i++) {
701 int v_shift = (i == 1 || i == 2) ? desc->log2_chroma_h : 0;
702 int plane_size = (frame->height >> v_shift) * frame->linesize[i];
704 WRAP_PLANE(frame->buf[i], frame->data[i], plane_size);
707 int planar = av_sample_fmt_is_planar(frame->format);
708 planes = planar ? avctx->channels : 1;
710 if (planes > FF_ARRAY_ELEMS(frame->buf)) {
711 frame->nb_extended_buf = planes - FF_ARRAY_ELEMS(frame->buf);
712 frame->extended_buf = av_malloc(sizeof(*frame->extended_buf) *
713 frame->nb_extended_buf);
714 if (!frame->extended_buf) {
715 ret = AVERROR(ENOMEM);
720 for (i = 0; i < FFMIN(planes, FF_ARRAY_ELEMS(frame->buf)); i++)
721 WRAP_PLANE(frame->buf[i], frame->extended_data[i], frame->linesize[0]);
723 for (i = 0; i < frame->nb_extended_buf; i++)
724 WRAP_PLANE(frame->extended_buf[i],
725 frame->extended_data[i + FF_ARRAY_ELEMS(frame->buf)],
729 av_buffer_unref(&dummy_buf);
731 frame->width = avctx->width;
732 frame->height = avctx->height;
737 avctx->release_buffer(avctx, frame);
739 av_buffer_unref(&dummy_buf);
742 FF_ENABLE_DEPRECATION_WARNINGS
745 ret = avctx->get_buffer2(avctx, frame, flags);
747 if (avctx->codec_type == AVMEDIA_TYPE_VIDEO && !override_dimensions) {
748 frame->width = avctx->width;
749 frame->height = avctx->height;
755 int ff_reget_buffer(AVCodecContext *avctx, AVFrame *frame)
760 av_assert0(avctx->codec_type == AVMEDIA_TYPE_VIDEO);
763 return ff_get_buffer(avctx, frame, AV_GET_BUFFER_FLAG_REF);
765 if (av_frame_is_writable(frame)) {
766 frame->pkt_pts = avctx->internal->pkt ? avctx->internal->pkt->pts : AV_NOPTS_VALUE;
767 frame->reordered_opaque = avctx->reordered_opaque;
771 tmp = av_frame_alloc();
773 return AVERROR(ENOMEM);
775 av_frame_move_ref(tmp, frame);
777 ret = ff_get_buffer(avctx, frame, AV_GET_BUFFER_FLAG_REF);
783 av_frame_copy(frame, tmp);
789 #if FF_API_GET_BUFFER
790 void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic)
795 int avcodec_default_reget_buffer(AVCodecContext *s, AVFrame *pic)
802 int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2), void *arg, int *ret, int count, int size)
806 for (i = 0; i < count; i++) {
807 int r = func(c, (char *)arg + i * size);
814 int avcodec_default_execute2(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2, int jobnr, int threadnr), void *arg, int *ret, int count)
818 for (i = 0; i < count; i++) {
819 int r = func(c, arg, i, 0);
826 static int is_hwaccel_pix_fmt(enum AVPixelFormat pix_fmt)
828 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
829 return desc->flags & AV_PIX_FMT_FLAG_HWACCEL;
832 enum AVPixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum AVPixelFormat *fmt)
834 while (*fmt != AV_PIX_FMT_NONE && is_hwaccel_pix_fmt(*fmt))
839 #if FF_API_AVFRAME_LAVC
840 void avcodec_get_frame_defaults(AVFrame *frame)
842 if (frame->extended_data != frame->data)
843 av_freep(&frame->extended_data);
845 memset(frame, 0, sizeof(AVFrame));
847 frame->pts = AV_NOPTS_VALUE;
848 frame->key_frame = 1;
849 frame->sample_aspect_ratio = (AVRational) {0, 1 };
850 frame->format = -1; /* unknown */
851 frame->extended_data = frame->data;
854 AVFrame *avcodec_alloc_frame(void)
856 AVFrame *frame = av_mallocz(sizeof(AVFrame));
861 FF_DISABLE_DEPRECATION_WARNINGS
862 avcodec_get_frame_defaults(frame);
863 FF_ENABLE_DEPRECATION_WARNINGS
868 void avcodec_free_frame(AVFrame **frame)
870 av_frame_free(frame);
874 int attribute_align_arg avcodec_open2(AVCodecContext *avctx, const AVCodec *codec, AVDictionary **options)
877 AVDictionary *tmp = NULL;
879 if (avcodec_is_open(avctx))
882 if ((!codec && !avctx->codec)) {
883 av_log(avctx, AV_LOG_ERROR, "No codec provided to avcodec_open2().\n");
884 return AVERROR(EINVAL);
886 if ((codec && avctx->codec && codec != avctx->codec)) {
887 av_log(avctx, AV_LOG_ERROR, "This AVCodecContext was allocated for %s, "
888 "but %s passed to avcodec_open2().\n", avctx->codec->name, codec->name);
889 return AVERROR(EINVAL);
892 codec = avctx->codec;
894 if (avctx->extradata_size < 0 || avctx->extradata_size >= FF_MAX_EXTRADATA_SIZE)
895 return AVERROR(EINVAL);
898 av_dict_copy(&tmp, *options, 0);
900 /* If there is a user-supplied mutex locking routine, call it. */
902 if ((*lockmgr_cb)(&codec_mutex, AV_LOCK_OBTAIN))
906 entangled_thread_counter++;
907 if (entangled_thread_counter != 1) {
908 av_log(avctx, AV_LOG_ERROR, "insufficient thread locking around avcodec_open/close()\n");
913 avctx->internal = av_mallocz(sizeof(AVCodecInternal));
914 if (!avctx->internal) {
915 ret = AVERROR(ENOMEM);
919 avctx->internal->pool = av_mallocz(sizeof(*avctx->internal->pool));
920 if (!avctx->internal->pool) {
921 ret = AVERROR(ENOMEM);
925 avctx->internal->to_free = av_frame_alloc();
926 if (!avctx->internal->to_free) {
927 ret = AVERROR(ENOMEM);
931 if (codec->priv_data_size > 0) {
932 if (!avctx->priv_data) {
933 avctx->priv_data = av_mallocz(codec->priv_data_size);
934 if (!avctx->priv_data) {
935 ret = AVERROR(ENOMEM);
938 if (codec->priv_class) {
939 *(const AVClass **)avctx->priv_data = codec->priv_class;
940 av_opt_set_defaults(avctx->priv_data);
943 if (codec->priv_class && (ret = av_opt_set_dict(avctx->priv_data, &tmp)) < 0)
946 avctx->priv_data = NULL;
948 if ((ret = av_opt_set_dict(avctx, &tmp)) < 0)
951 if (avctx->coded_width && avctx->coded_height && !avctx->width && !avctx->height)
952 ret = ff_set_dimensions(avctx, avctx->coded_width, avctx->coded_height);
953 else if (avctx->width && avctx->height)
954 ret = ff_set_dimensions(avctx, avctx->width, avctx->height);
958 if ((avctx->coded_width || avctx->coded_height || avctx->width || avctx->height)
959 && ( av_image_check_size(avctx->coded_width, avctx->coded_height, 0, avctx) < 0
960 || av_image_check_size(avctx->width, avctx->height, 0, avctx) < 0)) {
961 av_log(avctx, AV_LOG_WARNING, "ignoring invalid width/height values\n");
962 ff_set_dimensions(avctx, 0, 0);
965 /* if the decoder init function was already called previously,
966 * free the already allocated subtitle_header before overwriting it */
967 if (av_codec_is_decoder(codec))
968 av_freep(&avctx->subtitle_header);
970 if (avctx->channels > FF_SANE_NB_CHANNELS) {
971 ret = AVERROR(EINVAL);
975 avctx->codec = codec;
976 if ((avctx->codec_type == AVMEDIA_TYPE_UNKNOWN || avctx->codec_type == codec->type) &&
977 avctx->codec_id == AV_CODEC_ID_NONE) {
978 avctx->codec_type = codec->type;
979 avctx->codec_id = codec->id;
981 if (avctx->codec_id != codec->id || (avctx->codec_type != codec->type
982 && avctx->codec_type != AVMEDIA_TYPE_ATTACHMENT)) {
983 av_log(avctx, AV_LOG_ERROR, "codec type or id mismatches\n");
984 ret = AVERROR(EINVAL);
987 avctx->frame_number = 0;
989 if (avctx->codec->capabilities & CODEC_CAP_EXPERIMENTAL &&
990 avctx->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
991 ret = AVERROR_EXPERIMENTAL;
995 if (avctx->codec_type == AVMEDIA_TYPE_AUDIO &&
996 (!avctx->time_base.num || !avctx->time_base.den)) {
997 avctx->time_base.num = 1;
998 avctx->time_base.den = avctx->sample_rate;
1002 ret = ff_thread_init(avctx);
1007 if (!HAVE_THREADS && !(codec->capabilities & CODEC_CAP_AUTO_THREADS))
1008 avctx->thread_count = 1;
1010 if (av_codec_is_encoder(avctx->codec)) {
1012 if (avctx->codec->sample_fmts) {
1013 for (i = 0; avctx->codec->sample_fmts[i] != AV_SAMPLE_FMT_NONE; i++) {
1014 if (avctx->sample_fmt == avctx->codec->sample_fmts[i])
1016 if (avctx->channels == 1 &&
1017 av_get_planar_sample_fmt(avctx->sample_fmt) ==
1018 av_get_planar_sample_fmt(avctx->codec->sample_fmts[i])) {
1019 avctx->sample_fmt = avctx->codec->sample_fmts[i];
1023 if (avctx->codec->sample_fmts[i] == AV_SAMPLE_FMT_NONE) {
1024 av_log(avctx, AV_LOG_ERROR, "Specified sample_fmt is not supported.\n");
1025 ret = AVERROR(EINVAL);
1029 if (avctx->codec->pix_fmts) {
1030 for (i = 0; avctx->codec->pix_fmts[i] != AV_PIX_FMT_NONE; i++)
1031 if (avctx->pix_fmt == avctx->codec->pix_fmts[i])
1033 if (avctx->codec->pix_fmts[i] == AV_PIX_FMT_NONE) {
1034 av_log(avctx, AV_LOG_ERROR, "Specified pix_fmt is not supported\n");
1035 ret = AVERROR(EINVAL);
1039 if (avctx->codec->supported_samplerates) {
1040 for (i = 0; avctx->codec->supported_samplerates[i] != 0; i++)
1041 if (avctx->sample_rate == avctx->codec->supported_samplerates[i])
1043 if (avctx->codec->supported_samplerates[i] == 0) {
1044 av_log(avctx, AV_LOG_ERROR, "Specified sample_rate is not supported\n");
1045 ret = AVERROR(EINVAL);
1049 if (avctx->codec->channel_layouts) {
1050 if (!avctx->channel_layout) {
1051 av_log(avctx, AV_LOG_WARNING, "channel_layout not specified\n");
1053 for (i = 0; avctx->codec->channel_layouts[i] != 0; i++)
1054 if (avctx->channel_layout == avctx->codec->channel_layouts[i])
1056 if (avctx->codec->channel_layouts[i] == 0) {
1057 av_log(avctx, AV_LOG_ERROR, "Specified channel_layout is not supported\n");
1058 ret = AVERROR(EINVAL);
1063 if (avctx->channel_layout && avctx->channels) {
1064 if (av_get_channel_layout_nb_channels(avctx->channel_layout) != avctx->channels) {
1065 av_log(avctx, AV_LOG_ERROR, "channel layout does not match number of channels\n");
1066 ret = AVERROR(EINVAL);
1069 } else if (avctx->channel_layout) {
1070 avctx->channels = av_get_channel_layout_nb_channels(avctx->channel_layout);
1073 if (!avctx->rc_initial_buffer_occupancy)
1074 avctx->rc_initial_buffer_occupancy = avctx->rc_buffer_size * 3 / 4;
1077 if (avctx->codec->init && !(avctx->active_thread_type & FF_THREAD_FRAME)) {
1078 ret = avctx->codec->init(avctx);
1084 if (av_codec_is_decoder(avctx->codec)) {
1085 /* validate channel layout from the decoder */
1086 if (avctx->channel_layout) {
1087 int channels = av_get_channel_layout_nb_channels(avctx->channel_layout);
1088 if (!avctx->channels)
1089 avctx->channels = channels;
1090 else if (channels != avctx->channels) {
1091 av_log(avctx, AV_LOG_WARNING,
1092 "channel layout does not match number of channels\n");
1093 avctx->channel_layout = 0;
1096 if (avctx->channels && avctx->channels < 0 ||
1097 avctx->channels > FF_SANE_NB_CHANNELS) {
1098 ret = AVERROR(EINVAL);
1103 entangled_thread_counter--;
1105 /* Release any user-supplied mutex. */
1107 (*lockmgr_cb)(&codec_mutex, AV_LOCK_RELEASE);
1110 av_dict_free(options);
1117 av_freep(&avctx->priv_data);
1118 if (avctx->internal) {
1119 av_frame_free(&avctx->internal->to_free);
1120 av_freep(&avctx->internal->pool);
1122 av_freep(&avctx->internal);
1123 avctx->codec = NULL;
1127 int ff_alloc_packet(AVPacket *avpkt, int size)
1129 if (size > INT_MAX - FF_INPUT_BUFFER_PADDING_SIZE)
1130 return AVERROR(EINVAL);
1133 AVBufferRef *buf = avpkt->buf;
1134 #if FF_API_DESTRUCT_PACKET
1135 FF_DISABLE_DEPRECATION_WARNINGS
1136 void *destruct = avpkt->destruct;
1137 FF_ENABLE_DEPRECATION_WARNINGS
1140 if (avpkt->size < size)
1141 return AVERROR(EINVAL);
1143 av_init_packet(avpkt);
1144 #if FF_API_DESTRUCT_PACKET
1145 FF_DISABLE_DEPRECATION_WARNINGS
1146 avpkt->destruct = destruct;
1147 FF_ENABLE_DEPRECATION_WARNINGS
1153 return av_new_packet(avpkt, size);
1158 * Pad last frame with silence.
1160 static int pad_last_frame(AVCodecContext *s, AVFrame **dst, const AVFrame *src)
1162 AVFrame *frame = NULL;
1165 if (!(frame = av_frame_alloc()))
1166 return AVERROR(ENOMEM);
1168 frame->format = src->format;
1169 frame->channel_layout = src->channel_layout;
1170 frame->nb_samples = s->frame_size;
1171 ret = av_frame_get_buffer(frame, 32);
1175 ret = av_frame_copy_props(frame, src);
1179 if ((ret = av_samples_copy(frame->extended_data, src->extended_data, 0, 0,
1180 src->nb_samples, s->channels, s->sample_fmt)) < 0)
1182 if ((ret = av_samples_set_silence(frame->extended_data, src->nb_samples,
1183 frame->nb_samples - src->nb_samples,
1184 s->channels, s->sample_fmt)) < 0)
1192 av_frame_free(&frame);
1196 int attribute_align_arg avcodec_encode_audio2(AVCodecContext *avctx,
1198 const AVFrame *frame,
1199 int *got_packet_ptr)
1202 AVFrame *padded_frame = NULL;
1204 int user_packet = !!avpkt->data;
1206 *got_packet_ptr = 0;
1208 if (!(avctx->codec->capabilities & CODEC_CAP_DELAY) && !frame) {
1209 av_free_packet(avpkt);
1210 av_init_packet(avpkt);
1214 /* ensure that extended_data is properly set */
1215 if (frame && !frame->extended_data) {
1216 if (av_sample_fmt_is_planar(avctx->sample_fmt) &&
1217 avctx->channels > AV_NUM_DATA_POINTERS) {
1218 av_log(avctx, AV_LOG_ERROR, "Encoding to a planar sample format, "
1219 "with more than %d channels, but extended_data is not set.\n",
1220 AV_NUM_DATA_POINTERS);
1221 return AVERROR(EINVAL);
1223 av_log(avctx, AV_LOG_WARNING, "extended_data is not set.\n");
1226 tmp.extended_data = tmp.data;
1230 /* check for valid frame size */
1232 if (avctx->codec->capabilities & CODEC_CAP_SMALL_LAST_FRAME) {
1233 if (frame->nb_samples > avctx->frame_size)
1234 return AVERROR(EINVAL);
1235 } else if (!(avctx->codec->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE)) {
1236 if (frame->nb_samples < avctx->frame_size &&
1237 !avctx->internal->last_audio_frame) {
1238 ret = pad_last_frame(avctx, &padded_frame, frame);
1242 frame = padded_frame;
1243 avctx->internal->last_audio_frame = 1;
1246 if (frame->nb_samples != avctx->frame_size) {
1247 ret = AVERROR(EINVAL);
1253 ret = avctx->codec->encode2(avctx, avpkt, frame, got_packet_ptr);
1255 if (*got_packet_ptr) {
1256 if (!(avctx->codec->capabilities & CODEC_CAP_DELAY)) {
1257 if (avpkt->pts == AV_NOPTS_VALUE)
1258 avpkt->pts = frame->pts;
1259 if (!avpkt->duration)
1260 avpkt->duration = ff_samples_to_time_base(avctx,
1263 avpkt->dts = avpkt->pts;
1268 if (!user_packet && avpkt->size) {
1269 ret = av_buffer_realloc(&avpkt->buf, avpkt->size);
1271 avpkt->data = avpkt->buf->data;
1274 avctx->frame_number++;
1277 if (ret < 0 || !*got_packet_ptr) {
1278 av_free_packet(avpkt);
1279 av_init_packet(avpkt);
1283 /* NOTE: if we add any audio encoders which output non-keyframe packets,
1284 * this needs to be moved to the encoders, but for now we can do it
1285 * here to simplify things */
1286 avpkt->flags |= AV_PKT_FLAG_KEY;
1289 av_frame_free(&padded_frame);
1294 int attribute_align_arg avcodec_encode_video2(AVCodecContext *avctx,
1296 const AVFrame *frame,
1297 int *got_packet_ptr)
1300 int user_packet = !!avpkt->data;
1302 *got_packet_ptr = 0;
1304 if (!(avctx->codec->capabilities & CODEC_CAP_DELAY) && !frame) {
1305 av_free_packet(avpkt);
1306 av_init_packet(avpkt);
1311 if (av_image_check_size(avctx->width, avctx->height, 0, avctx))
1312 return AVERROR(EINVAL);
1314 av_assert0(avctx->codec->encode2);
1316 ret = avctx->codec->encode2(avctx, avpkt, frame, got_packet_ptr);
1318 if (!*got_packet_ptr)
1320 else if (!(avctx->codec->capabilities & CODEC_CAP_DELAY))
1321 avpkt->pts = avpkt->dts = frame->pts;
1323 if (!user_packet && avpkt->size) {
1324 ret = av_buffer_realloc(&avpkt->buf, avpkt->size);
1326 avpkt->data = avpkt->buf->data;
1329 avctx->frame_number++;
1332 if (ret < 0 || !*got_packet_ptr)
1333 av_free_packet(avpkt);
1339 int avcodec_encode_subtitle(AVCodecContext *avctx, uint8_t *buf, int buf_size,
1340 const AVSubtitle *sub)
1343 if (sub->start_display_time) {
1344 av_log(avctx, AV_LOG_ERROR, "start_display_time must be 0.\n");
1347 if (sub->num_rects == 0 || !sub->rects)
1349 ret = avctx->codec->encode_sub(avctx, buf, buf_size, sub);
1350 avctx->frame_number++;
1354 static int apply_param_change(AVCodecContext *avctx, AVPacket *avpkt)
1357 const uint8_t *data;
1360 data = av_packet_get_side_data(avpkt, AV_PKT_DATA_PARAM_CHANGE, &size);
1364 if (!(avctx->codec->capabilities & CODEC_CAP_PARAM_CHANGE)) {
1365 av_log(avctx, AV_LOG_ERROR, "This decoder does not support parameter "
1366 "changes, but PARAM_CHANGE side data was sent to it.\n");
1367 return AVERROR(EINVAL);
1373 flags = bytestream_get_le32(&data);
1376 if (flags & AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_COUNT) {
1379 avctx->channels = bytestream_get_le32(&data);
1382 if (flags & AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_LAYOUT) {
1385 avctx->channel_layout = bytestream_get_le64(&data);
1388 if (flags & AV_SIDE_DATA_PARAM_CHANGE_SAMPLE_RATE) {
1391 avctx->sample_rate = bytestream_get_le32(&data);
1394 if (flags & AV_SIDE_DATA_PARAM_CHANGE_DIMENSIONS) {
1397 avctx->width = bytestream_get_le32(&data);
1398 avctx->height = bytestream_get_le32(&data);
1400 ret = ff_set_dimensions(avctx, avctx->width, avctx->height);
1407 av_log(avctx, AV_LOG_ERROR, "PARAM_CHANGE side data too small.\n");
1408 return AVERROR_INVALIDDATA;
1411 static int unrefcount_frame(AVCodecInternal *avci, AVFrame *frame)
1415 /* move the original frame to our backup */
1416 av_frame_unref(avci->to_free);
1417 av_frame_move_ref(avci->to_free, frame);
1419 /* now copy everything except the AVBufferRefs back
1420 * note that we make a COPY of the side data, so calling av_frame_free() on
1421 * the caller's frame will work properly */
1422 ret = av_frame_copy_props(frame, avci->to_free);
1426 memcpy(frame->data, avci->to_free->data, sizeof(frame->data));
1427 memcpy(frame->linesize, avci->to_free->linesize, sizeof(frame->linesize));
1428 if (avci->to_free->extended_data != avci->to_free->data) {
1429 int planes = av_get_channel_layout_nb_channels(avci->to_free->channel_layout);
1430 int size = planes * sizeof(*frame->extended_data);
1433 av_frame_unref(frame);
1437 frame->extended_data = av_malloc(size);
1438 if (!frame->extended_data) {
1439 av_frame_unref(frame);
1440 return AVERROR(ENOMEM);
1442 memcpy(frame->extended_data, avci->to_free->extended_data,
1445 frame->extended_data = frame->data;
1447 frame->format = avci->to_free->format;
1448 frame->width = avci->to_free->width;
1449 frame->height = avci->to_free->height;
1450 frame->channel_layout = avci->to_free->channel_layout;
1451 frame->nb_samples = avci->to_free->nb_samples;
1456 int attribute_align_arg avcodec_decode_video2(AVCodecContext *avctx, AVFrame *picture,
1457 int *got_picture_ptr,
1460 AVCodecInternal *avci = avctx->internal;
1463 *got_picture_ptr = 0;
1464 if ((avctx->coded_width || avctx->coded_height) && av_image_check_size(avctx->coded_width, avctx->coded_height, 0, avctx))
1467 avctx->internal->pkt = avpkt;
1468 ret = apply_param_change(avctx, avpkt);
1470 av_log(avctx, AV_LOG_ERROR, "Error applying parameter changes.\n");
1471 if (avctx->err_recognition & AV_EF_EXPLODE)
1475 av_frame_unref(picture);
1477 if ((avctx->codec->capabilities & CODEC_CAP_DELAY) || avpkt->size || (avctx->active_thread_type & FF_THREAD_FRAME)) {
1478 if (HAVE_THREADS && avctx->active_thread_type & FF_THREAD_FRAME)
1479 ret = ff_thread_decode_frame(avctx, picture, got_picture_ptr,
1482 ret = avctx->codec->decode(avctx, picture, got_picture_ptr,
1484 picture->pkt_dts = avpkt->dts;
1485 /* get_buffer is supposed to set frame parameters */
1486 if (!(avctx->codec->capabilities & CODEC_CAP_DR1)) {
1487 picture->sample_aspect_ratio = avctx->sample_aspect_ratio;
1488 picture->width = avctx->width;
1489 picture->height = avctx->height;
1490 picture->format = avctx->pix_fmt;
1494 emms_c(); //needed to avoid an emms_c() call before every return;
1496 if (*got_picture_ptr) {
1497 if (!avctx->refcounted_frames) {
1498 int err = unrefcount_frame(avci, picture);
1503 avctx->frame_number++;
1505 av_frame_unref(picture);
1512 int attribute_align_arg avcodec_decode_audio4(AVCodecContext *avctx,
1517 AVCodecInternal *avci = avctx->internal;
1522 avctx->internal->pkt = avpkt;
1524 if (!avpkt->data && avpkt->size) {
1525 av_log(avctx, AV_LOG_ERROR, "invalid packet: NULL data, size != 0\n");
1526 return AVERROR(EINVAL);
1529 ret = apply_param_change(avctx, avpkt);
1531 av_log(avctx, AV_LOG_ERROR, "Error applying parameter changes.\n");
1532 if (avctx->err_recognition & AV_EF_EXPLODE)
1536 av_frame_unref(frame);
1538 if ((avctx->codec->capabilities & CODEC_CAP_DELAY) || avpkt->size) {
1539 ret = avctx->codec->decode(avctx, frame, got_frame_ptr, avpkt);
1540 if (ret >= 0 && *got_frame_ptr) {
1541 avctx->frame_number++;
1542 frame->pkt_dts = avpkt->dts;
1543 if (frame->format == AV_SAMPLE_FMT_NONE)
1544 frame->format = avctx->sample_fmt;
1546 if (!avctx->refcounted_frames) {
1547 int err = unrefcount_frame(avci, frame);
1552 av_frame_unref(frame);
1559 int avcodec_decode_subtitle2(AVCodecContext *avctx, AVSubtitle *sub,
1565 avctx->internal->pkt = avpkt;
1567 ret = avctx->codec->decode(avctx, sub, got_sub_ptr, avpkt);
1569 avctx->frame_number++;
1573 void avsubtitle_free(AVSubtitle *sub)
1577 for (i = 0; i < sub->num_rects; i++) {
1578 av_freep(&sub->rects[i]->pict.data[0]);
1579 av_freep(&sub->rects[i]->pict.data[1]);
1580 av_freep(&sub->rects[i]->pict.data[2]);
1581 av_freep(&sub->rects[i]->pict.data[3]);
1582 av_freep(&sub->rects[i]->text);
1583 av_freep(&sub->rects[i]->ass);
1584 av_freep(&sub->rects[i]);
1587 av_freep(&sub->rects);
1589 memset(sub, 0, sizeof(AVSubtitle));
1592 av_cold int avcodec_close(AVCodecContext *avctx)
1594 /* If there is a user-supplied mutex locking routine, call it. */
1596 if ((*lockmgr_cb)(&codec_mutex, AV_LOCK_OBTAIN))
1600 entangled_thread_counter++;
1601 if (entangled_thread_counter != 1) {
1602 av_log(avctx, AV_LOG_ERROR, "insufficient thread locking around avcodec_open/close()\n");
1603 entangled_thread_counter--;
1607 if (avcodec_is_open(avctx)) {
1608 FramePool *pool = avctx->internal->pool;
1610 if (HAVE_THREADS && avctx->internal->thread_ctx)
1611 ff_thread_free(avctx);
1612 if (avctx->codec && avctx->codec->close)
1613 avctx->codec->close(avctx);
1614 avctx->coded_frame = NULL;
1615 av_frame_free(&avctx->internal->to_free);
1616 for (i = 0; i < FF_ARRAY_ELEMS(pool->pools); i++)
1617 av_buffer_pool_uninit(&pool->pools[i]);
1618 av_freep(&avctx->internal->pool);
1619 av_freep(&avctx->internal);
1622 if (avctx->priv_data && avctx->codec && avctx->codec->priv_class)
1623 av_opt_free(avctx->priv_data);
1625 av_freep(&avctx->priv_data);
1626 if (av_codec_is_encoder(avctx->codec))
1627 av_freep(&avctx->extradata);
1628 avctx->codec = NULL;
1629 avctx->active_thread_type = 0;
1630 entangled_thread_counter--;
1632 /* Release any user-supplied mutex. */
1634 (*lockmgr_cb)(&codec_mutex, AV_LOCK_RELEASE);
1639 static AVCodec *find_encdec(enum AVCodecID id, int encoder)
1641 AVCodec *p, *experimental = NULL;
1644 if ((encoder ? av_codec_is_encoder(p) : av_codec_is_decoder(p)) &&
1646 if (p->capabilities & CODEC_CAP_EXPERIMENTAL && !experimental) {
1653 return experimental;
1656 AVCodec *avcodec_find_encoder(enum AVCodecID id)
1658 return find_encdec(id, 1);
1661 AVCodec *avcodec_find_encoder_by_name(const char *name)
1668 if (av_codec_is_encoder(p) && strcmp(name, p->name) == 0)
1675 AVCodec *avcodec_find_decoder(enum AVCodecID id)
1677 return find_encdec(id, 0);
1680 AVCodec *avcodec_find_decoder_by_name(const char *name)
1687 if (av_codec_is_decoder(p) && strcmp(name, p->name) == 0)
1694 static int get_bit_rate(AVCodecContext *ctx)
1697 int bits_per_sample;
1699 switch (ctx->codec_type) {
1700 case AVMEDIA_TYPE_VIDEO:
1701 case AVMEDIA_TYPE_DATA:
1702 case AVMEDIA_TYPE_SUBTITLE:
1703 case AVMEDIA_TYPE_ATTACHMENT:
1704 bit_rate = ctx->bit_rate;
1706 case AVMEDIA_TYPE_AUDIO:
1707 bits_per_sample = av_get_bits_per_sample(ctx->codec_id);
1708 bit_rate = bits_per_sample ? ctx->sample_rate * ctx->channels * bits_per_sample : ctx->bit_rate;
1717 size_t av_get_codec_tag_string(char *buf, size_t buf_size, unsigned int codec_tag)
1719 int i, len, ret = 0;
1721 #define TAG_PRINT(x) \
1722 (((x) >= '0' && (x) <= '9') || \
1723 ((x) >= 'a' && (x) <= 'z') || ((x) >= 'A' && (x) <= 'Z') || \
1724 ((x) == '.' || (x) == ' '))
1726 for (i = 0; i < 4; i++) {
1727 len = snprintf(buf, buf_size,
1728 TAG_PRINT(codec_tag & 0xFF) ? "%c" : "[%d]", codec_tag & 0xFF);
1730 buf_size = buf_size > len ? buf_size - len : 0;
1737 void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode)
1739 const char *codec_name;
1740 const char *profile = NULL;
1744 AVRational display_aspect_ratio;
1749 p = avcodec_find_encoder(enc->codec_id);
1751 p = avcodec_find_decoder(enc->codec_id);
1754 codec_name = p->name;
1755 profile = av_get_profile_name(p, enc->profile);
1756 } else if (enc->codec_id == AV_CODEC_ID_MPEG2TS) {
1757 /* fake mpeg2 transport stream codec (currently not
1759 codec_name = "mpeg2ts";
1760 } else if (enc->codec_name[0] != '\0') {
1761 codec_name = enc->codec_name;
1763 /* output avi tags */
1765 av_get_codec_tag_string(tag_buf, sizeof(tag_buf), enc->codec_tag);
1766 snprintf(buf1, sizeof(buf1), "%s / 0x%04X", tag_buf, enc->codec_tag);
1770 switch (enc->codec_type) {
1771 case AVMEDIA_TYPE_VIDEO:
1772 snprintf(buf, buf_size,
1774 codec_name, enc->mb_decision ? " (hq)" : "");
1776 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1778 if (enc->pix_fmt != AV_PIX_FMT_NONE) {
1779 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1781 av_get_pix_fmt_name(enc->pix_fmt));
1784 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1786 enc->width, enc->height);
1787 if (enc->sample_aspect_ratio.num) {
1788 av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,
1789 enc->width * enc->sample_aspect_ratio.num,
1790 enc->height * enc->sample_aspect_ratio.den,
1792 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1793 " [PAR %d:%d DAR %d:%d]",
1794 enc->sample_aspect_ratio.num, enc->sample_aspect_ratio.den,
1795 display_aspect_ratio.num, display_aspect_ratio.den);
1797 if (av_log_get_level() >= AV_LOG_DEBUG) {
1798 int g = av_gcd(enc->time_base.num, enc->time_base.den);
1799 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1801 enc->time_base.num / g, enc->time_base.den / g);
1805 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1806 ", q=%d-%d", enc->qmin, enc->qmax);
1809 case AVMEDIA_TYPE_AUDIO:
1810 snprintf(buf, buf_size,
1814 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1816 if (enc->sample_rate) {
1817 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1818 ", %d Hz", enc->sample_rate);
1820 av_strlcat(buf, ", ", buf_size);
1821 av_get_channel_layout_string(buf + strlen(buf), buf_size - strlen(buf), enc->channels, enc->channel_layout);
1822 if (enc->sample_fmt != AV_SAMPLE_FMT_NONE) {
1823 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1824 ", %s", av_get_sample_fmt_name(enc->sample_fmt));
1827 case AVMEDIA_TYPE_DATA:
1828 snprintf(buf, buf_size, "Data: %s", codec_name);
1830 case AVMEDIA_TYPE_SUBTITLE:
1831 snprintf(buf, buf_size, "Subtitle: %s", codec_name);
1833 case AVMEDIA_TYPE_ATTACHMENT:
1834 snprintf(buf, buf_size, "Attachment: %s", codec_name);
1837 snprintf(buf, buf_size, "Invalid Codec type %d", enc->codec_type);
1841 if (enc->flags & CODEC_FLAG_PASS1)
1842 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1844 if (enc->flags & CODEC_FLAG_PASS2)
1845 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1848 bitrate = get_bit_rate(enc);
1850 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1851 ", %d kb/s", bitrate / 1000);
1855 const char *av_get_profile_name(const AVCodec *codec, int profile)
1858 if (profile == FF_PROFILE_UNKNOWN || !codec->profiles)
1861 for (p = codec->profiles; p->profile != FF_PROFILE_UNKNOWN; p++)
1862 if (p->profile == profile)
1868 unsigned avcodec_version(void)
1870 return LIBAVCODEC_VERSION_INT;
1873 const char *avcodec_configuration(void)
1875 return LIBAV_CONFIGURATION;
1878 const char *avcodec_license(void)
1880 #define LICENSE_PREFIX "libavcodec license: "
1881 return LICENSE_PREFIX LIBAV_LICENSE + sizeof(LICENSE_PREFIX) - 1;
1884 void avcodec_flush_buffers(AVCodecContext *avctx)
1886 if (HAVE_THREADS && avctx->active_thread_type & FF_THREAD_FRAME)
1887 ff_thread_flush(avctx);
1888 else if (avctx->codec->flush)
1889 avctx->codec->flush(avctx);
1891 if (!avctx->refcounted_frames)
1892 av_frame_unref(avctx->internal->to_free);
1895 int av_get_exact_bits_per_sample(enum AVCodecID codec_id)
1898 case AV_CODEC_ID_ADPCM_CT:
1899 case AV_CODEC_ID_ADPCM_IMA_APC:
1900 case AV_CODEC_ID_ADPCM_IMA_EA_SEAD:
1901 case AV_CODEC_ID_ADPCM_IMA_WS:
1902 case AV_CODEC_ID_ADPCM_G722:
1903 case AV_CODEC_ID_ADPCM_YAMAHA:
1905 case AV_CODEC_ID_PCM_ALAW:
1906 case AV_CODEC_ID_PCM_MULAW:
1907 case AV_CODEC_ID_PCM_S8:
1908 case AV_CODEC_ID_PCM_U8:
1909 case AV_CODEC_ID_PCM_ZORK:
1911 case AV_CODEC_ID_PCM_S16BE:
1912 case AV_CODEC_ID_PCM_S16LE:
1913 case AV_CODEC_ID_PCM_S16LE_PLANAR:
1914 case AV_CODEC_ID_PCM_U16BE:
1915 case AV_CODEC_ID_PCM_U16LE:
1917 case AV_CODEC_ID_PCM_S24DAUD:
1918 case AV_CODEC_ID_PCM_S24BE:
1919 case AV_CODEC_ID_PCM_S24LE:
1920 case AV_CODEC_ID_PCM_S24LE_PLANAR:
1921 case AV_CODEC_ID_PCM_U24BE:
1922 case AV_CODEC_ID_PCM_U24LE:
1924 case AV_CODEC_ID_PCM_S32BE:
1925 case AV_CODEC_ID_PCM_S32LE:
1926 case AV_CODEC_ID_PCM_S32LE_PLANAR:
1927 case AV_CODEC_ID_PCM_U32BE:
1928 case AV_CODEC_ID_PCM_U32LE:
1929 case AV_CODEC_ID_PCM_F32BE:
1930 case AV_CODEC_ID_PCM_F32LE:
1932 case AV_CODEC_ID_PCM_F64BE:
1933 case AV_CODEC_ID_PCM_F64LE:
1940 int av_get_bits_per_sample(enum AVCodecID codec_id)
1943 case AV_CODEC_ID_ADPCM_SBPRO_2:
1945 case AV_CODEC_ID_ADPCM_SBPRO_3:
1947 case AV_CODEC_ID_ADPCM_SBPRO_4:
1948 case AV_CODEC_ID_ADPCM_IMA_WAV:
1949 case AV_CODEC_ID_ADPCM_IMA_QT:
1950 case AV_CODEC_ID_ADPCM_SWF:
1951 case AV_CODEC_ID_ADPCM_MS:
1954 return av_get_exact_bits_per_sample(codec_id);
1958 int av_get_audio_frame_duration(AVCodecContext *avctx, int frame_bytes)
1960 int id, sr, ch, ba, tag, bps;
1962 id = avctx->codec_id;
1963 sr = avctx->sample_rate;
1964 ch = avctx->channels;
1965 ba = avctx->block_align;
1966 tag = avctx->codec_tag;
1967 bps = av_get_exact_bits_per_sample(avctx->codec_id);
1969 /* codecs with an exact constant bits per sample */
1970 if (bps > 0 && ch > 0 && frame_bytes > 0)
1971 return (frame_bytes * 8) / (bps * ch);
1972 bps = avctx->bits_per_coded_sample;
1974 /* codecs with a fixed packet duration */
1976 case AV_CODEC_ID_ADPCM_ADX: return 32;
1977 case AV_CODEC_ID_ADPCM_IMA_QT: return 64;
1978 case AV_CODEC_ID_ADPCM_EA_XAS: return 128;
1979 case AV_CODEC_ID_AMR_NB:
1980 case AV_CODEC_ID_GSM:
1981 case AV_CODEC_ID_QCELP:
1982 case AV_CODEC_ID_RA_144:
1983 case AV_CODEC_ID_RA_288: return 160;
1984 case AV_CODEC_ID_IMC: return 256;
1985 case AV_CODEC_ID_AMR_WB:
1986 case AV_CODEC_ID_GSM_MS: return 320;
1987 case AV_CODEC_ID_MP1: return 384;
1988 case AV_CODEC_ID_ATRAC1: return 512;
1989 case AV_CODEC_ID_ATRAC3: return 1024;
1990 case AV_CODEC_ID_MP2:
1991 case AV_CODEC_ID_MUSEPACK7: return 1152;
1992 case AV_CODEC_ID_AC3: return 1536;
1996 /* calc from sample rate */
1997 if (id == AV_CODEC_ID_TTA)
1998 return 256 * sr / 245;
2001 /* calc from sample rate and channels */
2002 if (id == AV_CODEC_ID_BINKAUDIO_DCT)
2003 return (480 << (sr / 22050)) / ch;
2008 /* calc from block_align */
2009 if (id == AV_CODEC_ID_SIPR) {
2011 case 20: return 160;
2012 case 19: return 144;
2013 case 29: return 288;
2014 case 37: return 480;
2016 } else if (id == AV_CODEC_ID_ILBC) {
2018 case 38: return 160;
2019 case 50: return 240;
2024 if (frame_bytes > 0) {
2025 /* calc from frame_bytes only */
2026 if (id == AV_CODEC_ID_TRUESPEECH)
2027 return 240 * (frame_bytes / 32);
2028 if (id == AV_CODEC_ID_NELLYMOSER)
2029 return 256 * (frame_bytes / 64);
2032 /* calc from frame_bytes and bits_per_coded_sample */
2033 if (id == AV_CODEC_ID_ADPCM_G726)
2034 return frame_bytes * 8 / bps;
2038 /* calc from frame_bytes and channels */
2040 case AV_CODEC_ID_ADPCM_4XM:
2041 case AV_CODEC_ID_ADPCM_IMA_ISS:
2042 return (frame_bytes - 4 * ch) * 2 / ch;
2043 case AV_CODEC_ID_ADPCM_IMA_SMJPEG:
2044 return (frame_bytes - 4) * 2 / ch;
2045 case AV_CODEC_ID_ADPCM_IMA_AMV:
2046 return (frame_bytes - 8) * 2 / ch;
2047 case AV_CODEC_ID_ADPCM_XA:
2048 return (frame_bytes / 128) * 224 / ch;
2049 case AV_CODEC_ID_INTERPLAY_DPCM:
2050 return (frame_bytes - 6 - ch) / ch;
2051 case AV_CODEC_ID_ROQ_DPCM:
2052 return (frame_bytes - 8) / ch;
2053 case AV_CODEC_ID_XAN_DPCM:
2054 return (frame_bytes - 2 * ch) / ch;
2055 case AV_CODEC_ID_MACE3:
2056 return 3 * frame_bytes / ch;
2057 case AV_CODEC_ID_MACE6:
2058 return 6 * frame_bytes / ch;
2059 case AV_CODEC_ID_PCM_LXF:
2060 return 2 * (frame_bytes / (5 * ch));
2064 /* calc from frame_bytes, channels, and codec_tag */
2065 if (id == AV_CODEC_ID_SOL_DPCM) {
2067 return frame_bytes / ch;
2069 return frame_bytes * 2 / ch;
2074 /* calc from frame_bytes, channels, and block_align */
2075 int blocks = frame_bytes / ba;
2076 switch (avctx->codec_id) {
2077 case AV_CODEC_ID_ADPCM_IMA_WAV:
2078 return blocks * (1 + (ba - 4 * ch) / (4 * ch) * 8);
2079 case AV_CODEC_ID_ADPCM_IMA_DK3:
2080 return blocks * (((ba - 16) * 2 / 3 * 4) / ch);
2081 case AV_CODEC_ID_ADPCM_IMA_DK4:
2082 return blocks * (1 + (ba - 4 * ch) * 2 / ch);
2083 case AV_CODEC_ID_ADPCM_MS:
2084 return blocks * (2 + (ba - 7 * ch) * 2 / ch);
2089 /* calc from frame_bytes, channels, and bits_per_coded_sample */
2090 switch (avctx->codec_id) {
2091 case AV_CODEC_ID_PCM_DVD:
2092 return 2 * (frame_bytes / ((bps * 2 / 8) * ch));
2093 case AV_CODEC_ID_PCM_BLURAY:
2094 return frame_bytes / ((FFALIGN(ch, 2) * bps) / 8);
2095 case AV_CODEC_ID_S302M:
2096 return 2 * (frame_bytes / ((bps + 4) / 4)) / ch;
2106 int ff_thread_init(AVCodecContext *s)
2113 unsigned int av_xiphlacing(unsigned char *s, unsigned int v)
2127 int ff_match_2uint16(const uint16_t(*tab)[2], int size, int a, int b)
2130 for (i = 0; i < size && !(tab[i][0] == a && tab[i][1] == b); i++) ;
2134 #if FF_API_MISSING_SAMPLE
2135 FF_DISABLE_DEPRECATION_WARNINGS
2136 void av_log_missing_feature(void *avc, const char *feature, int want_sample)
2138 av_log(avc, AV_LOG_WARNING, "%s is not implemented. Update your Libav "
2139 "version to the newest one from Git. If the problem still "
2140 "occurs, it means that your file has a feature which has not "
2141 "been implemented.\n", feature);
2143 av_log_ask_for_sample(avc, NULL);
2146 void av_log_ask_for_sample(void *avc, const char *msg, ...)
2148 va_list argument_list;
2150 va_start(argument_list, msg);
2153 av_vlog(avc, AV_LOG_WARNING, msg, argument_list);
2154 av_log(avc, AV_LOG_WARNING, "If you want to help, upload a sample "
2155 "of this file to ftp://upload.libav.org/incoming/ "
2156 "and contact the libav-devel mailing list.\n");
2158 va_end(argument_list);
2160 FF_ENABLE_DEPRECATION_WARNINGS
2161 #endif /* FF_API_MISSING_SAMPLE */
2163 static AVHWAccel *first_hwaccel = NULL;
2165 void av_register_hwaccel(AVHWAccel *hwaccel)
2167 AVHWAccel **p = &first_hwaccel;
2171 hwaccel->next = NULL;
2174 AVHWAccel *av_hwaccel_next(AVHWAccel *hwaccel)
2176 return hwaccel ? hwaccel->next : first_hwaccel;
2179 AVHWAccel *ff_find_hwaccel(AVCodecContext *avctx)
2181 enum AVCodecID codec_id = avctx->codec->id;
2182 enum AVPixelFormat pix_fmt = avctx->pix_fmt;
2184 AVHWAccel *hwaccel = NULL;
2186 while ((hwaccel = av_hwaccel_next(hwaccel)))
2187 if (hwaccel->id == codec_id
2188 && hwaccel->pix_fmt == pix_fmt)
2193 int av_lockmgr_register(int (*cb)(void **mutex, enum AVLockOp op))
2196 if (lockmgr_cb(&codec_mutex, AV_LOCK_DESTROY))
2198 if (lockmgr_cb(&avformat_mutex, AV_LOCK_DESTROY))
2205 if (lockmgr_cb(&codec_mutex, AV_LOCK_CREATE))
2207 if (lockmgr_cb(&avformat_mutex, AV_LOCK_CREATE))
2213 int avpriv_lock_avformat(void)
2216 if ((*lockmgr_cb)(&avformat_mutex, AV_LOCK_OBTAIN))
2222 int avpriv_unlock_avformat(void)
2225 if ((*lockmgr_cb)(&avformat_mutex, AV_LOCK_RELEASE))
2231 unsigned int avpriv_toupper4(unsigned int x)
2233 return av_toupper(x & 0xFF) +
2234 (av_toupper((x >> 8) & 0xFF) << 8) +
2235 (av_toupper((x >> 16) & 0xFF) << 16) +
2236 (av_toupper((x >> 24) & 0xFF) << 24);
2239 int ff_thread_ref_frame(ThreadFrame *dst, ThreadFrame *src)
2243 dst->owner = src->owner;
2245 ret = av_frame_ref(dst->f, src->f);
2249 if (src->progress &&
2250 !(dst->progress = av_buffer_ref(src->progress))) {
2251 ff_thread_release_buffer(dst->owner, dst);
2252 return AVERROR(ENOMEM);
2260 int ff_thread_get_buffer(AVCodecContext *avctx, ThreadFrame *f, int flags)
2263 return ff_get_buffer(avctx, f->f, flags);
2266 void ff_thread_release_buffer(AVCodecContext *avctx, ThreadFrame *f)
2268 av_frame_unref(f->f);
2271 void ff_thread_finish_setup(AVCodecContext *avctx)
2275 void ff_thread_report_progress(ThreadFrame *f, int progress, int field)
2279 void ff_thread_await_progress(ThreadFrame *f, int progress, int field)
2285 enum AVMediaType avcodec_get_type(enum AVCodecID codec_id)
2287 if (codec_id <= AV_CODEC_ID_NONE)
2288 return AVMEDIA_TYPE_UNKNOWN;
2289 else if (codec_id < AV_CODEC_ID_FIRST_AUDIO)
2290 return AVMEDIA_TYPE_VIDEO;
2291 else if (codec_id < AV_CODEC_ID_FIRST_SUBTITLE)
2292 return AVMEDIA_TYPE_AUDIO;
2293 else if (codec_id < AV_CODEC_ID_FIRST_UNKNOWN)
2294 return AVMEDIA_TYPE_SUBTITLE;
2296 return AVMEDIA_TYPE_UNKNOWN;
2299 int avcodec_is_open(AVCodecContext *s)
2301 return !!s->internal;
2304 const uint8_t *avpriv_find_start_code(const uint8_t *restrict p,
2306 uint32_t * restrict state)
2314 for (i = 0; i < 3; i++) {
2315 uint32_t tmp = *state << 8;
2316 *state = tmp + *(p++);
2317 if (tmp == 0x100 || p == end)
2322 if (p[-1] > 1 ) p += 3;
2323 else if (p[-2] ) p += 2;
2324 else if (p[-3]|(p[-1]-1)) p++;
2331 p = FFMIN(p, end) - 4;
2332 *state = AV_RB32(p);