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 = FF_CEIL_RSHIFT(width, s->lowres);
183 s->height = FF_CEIL_RSHIFT(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_GBRAP:
207 case AV_PIX_FMT_GBRP:
208 case AV_PIX_FMT_GRAY8:
209 case AV_PIX_FMT_GRAY16BE:
210 case AV_PIX_FMT_GRAY16LE:
211 case AV_PIX_FMT_YUVJ420P:
212 case AV_PIX_FMT_YUVJ422P:
213 case AV_PIX_FMT_YUVJ440P:
214 case AV_PIX_FMT_YUVJ444P:
215 case AV_PIX_FMT_YUVA420P:
216 case AV_PIX_FMT_YUVA422P:
217 case AV_PIX_FMT_YUVA444P:
218 case AV_PIX_FMT_YUV420P9LE:
219 case AV_PIX_FMT_YUV420P9BE:
220 case AV_PIX_FMT_YUV420P10LE:
221 case AV_PIX_FMT_YUV420P10BE:
222 case AV_PIX_FMT_YUV420P12LE:
223 case AV_PIX_FMT_YUV420P12BE:
224 case AV_PIX_FMT_YUV420P14LE:
225 case AV_PIX_FMT_YUV420P14BE:
226 case AV_PIX_FMT_YUV422P9LE:
227 case AV_PIX_FMT_YUV422P9BE:
228 case AV_PIX_FMT_YUV422P10LE:
229 case AV_PIX_FMT_YUV422P10BE:
230 case AV_PIX_FMT_YUV422P12LE:
231 case AV_PIX_FMT_YUV422P12BE:
232 case AV_PIX_FMT_YUV422P14LE:
233 case AV_PIX_FMT_YUV422P14BE:
234 case AV_PIX_FMT_YUV444P9LE:
235 case AV_PIX_FMT_YUV444P9BE:
236 case AV_PIX_FMT_YUV444P10LE:
237 case AV_PIX_FMT_YUV444P10BE:
238 case AV_PIX_FMT_YUV444P12LE:
239 case AV_PIX_FMT_YUV444P12BE:
240 case AV_PIX_FMT_YUV444P14LE:
241 case AV_PIX_FMT_YUV444P14BE:
242 case AV_PIX_FMT_YUVA420P9LE:
243 case AV_PIX_FMT_YUVA420P9BE:
244 case AV_PIX_FMT_YUVA420P10LE:
245 case AV_PIX_FMT_YUVA420P10BE:
246 case AV_PIX_FMT_YUVA422P9LE:
247 case AV_PIX_FMT_YUVA422P9BE:
248 case AV_PIX_FMT_YUVA422P10LE:
249 case AV_PIX_FMT_YUVA422P10BE:
250 case AV_PIX_FMT_YUVA444P9LE:
251 case AV_PIX_FMT_YUVA444P9BE:
252 case AV_PIX_FMT_YUVA444P10LE:
253 case AV_PIX_FMT_YUVA444P10BE:
254 case AV_PIX_FMT_GBRP9LE:
255 case AV_PIX_FMT_GBRP9BE:
256 case AV_PIX_FMT_GBRP10LE:
257 case AV_PIX_FMT_GBRP10BE:
258 case AV_PIX_FMT_GBRP12LE:
259 case AV_PIX_FMT_GBRP12BE:
260 case AV_PIX_FMT_GBRP14LE:
261 case AV_PIX_FMT_GBRP14BE:
262 w_align = 16; //FIXME assume 16 pixel per macroblock
263 h_align = 16 * 2; // interlaced needs 2 macroblocks height
265 case AV_PIX_FMT_YUV411P:
266 case AV_PIX_FMT_YUVJ411P:
267 case AV_PIX_FMT_UYYVYY411:
271 case AV_PIX_FMT_YUV410P:
272 if (s->codec_id == AV_CODEC_ID_SVQ1) {
277 case AV_PIX_FMT_RGB555:
278 if (s->codec_id == AV_CODEC_ID_RPZA) {
283 case AV_PIX_FMT_PAL8:
284 case AV_PIX_FMT_BGR8:
285 case AV_PIX_FMT_RGB8:
286 if (s->codec_id == AV_CODEC_ID_SMC ||
287 s->codec_id == AV_CODEC_ID_CINEPAK) {
292 case AV_PIX_FMT_BGR24:
293 if ((s->codec_id == AV_CODEC_ID_MSZH) ||
294 (s->codec_id == AV_CODEC_ID_ZLIB)) {
299 case AV_PIX_FMT_RGB24:
300 if (s->codec_id == AV_CODEC_ID_CINEPAK) {
311 if (s->codec_id == AV_CODEC_ID_IFF_ILBM || s->codec_id == AV_CODEC_ID_IFF_BYTERUN1) {
312 w_align = FFMAX(w_align, 8);
315 *width = FFALIGN(*width, w_align);
316 *height = FFALIGN(*height, h_align);
317 if (s->codec_id == AV_CODEC_ID_H264 || s->lowres)
318 // some of the optimized chroma MC reads one line too much
319 // which is also done in mpeg decoders with lowres > 0
322 for (i = 0; i < 4; i++)
323 linesize_align[i] = STRIDE_ALIGN;
326 void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height)
328 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(s->pix_fmt);
329 int chroma_shift = desc->log2_chroma_w;
330 int linesize_align[AV_NUM_DATA_POINTERS];
333 avcodec_align_dimensions2(s, width, height, linesize_align);
334 align = FFMAX(linesize_align[0], linesize_align[3]);
335 linesize_align[1] <<= chroma_shift;
336 linesize_align[2] <<= chroma_shift;
337 align = FFMAX3(align, linesize_align[1], linesize_align[2]);
338 *width = FFALIGN(*width, align);
341 int avcodec_fill_audio_frame(AVFrame *frame, int nb_channels,
342 enum AVSampleFormat sample_fmt, const uint8_t *buf,
343 int buf_size, int align)
345 int ch, planar, needed_size, ret = 0;
347 needed_size = av_samples_get_buffer_size(NULL, nb_channels,
348 frame->nb_samples, sample_fmt,
350 if (buf_size < needed_size)
351 return AVERROR(EINVAL);
353 planar = av_sample_fmt_is_planar(sample_fmt);
354 if (planar && nb_channels > AV_NUM_DATA_POINTERS) {
355 if (!(frame->extended_data = av_mallocz(nb_channels *
356 sizeof(*frame->extended_data))))
357 return AVERROR(ENOMEM);
359 frame->extended_data = frame->data;
362 if ((ret = av_samples_fill_arrays(frame->extended_data, &frame->linesize[0],
363 (uint8_t *)(intptr_t)buf, nb_channels, frame->nb_samples,
364 sample_fmt, align)) < 0) {
365 if (frame->extended_data != frame->data)
366 av_freep(&frame->extended_data);
369 if (frame->extended_data != frame->data) {
370 for (ch = 0; ch < AV_NUM_DATA_POINTERS; ch++)
371 frame->data[ch] = frame->extended_data[ch];
377 static int update_frame_pool(AVCodecContext *avctx, AVFrame *frame)
379 FramePool *pool = avctx->internal->pool;
382 switch (avctx->codec_type) {
383 case AVMEDIA_TYPE_VIDEO: {
386 int w = frame->width;
387 int h = frame->height;
388 int tmpsize, unaligned;
390 if (pool->format == frame->format &&
391 pool->width == frame->width && pool->height == frame->height)
394 avcodec_align_dimensions2(avctx, &w, &h, pool->stride_align);
396 if (!(avctx->flags & CODEC_FLAG_EMU_EDGE)) {
402 // NOTE: do not align linesizes individually, this breaks e.g. assumptions
403 // that linesize[0] == 2*linesize[1] in the MPEG-encoder for 4:2:2
404 av_image_fill_linesizes(picture.linesize, avctx->pix_fmt, w);
405 // increase alignment of w for next try (rhs gives the lowest bit set in w)
409 for (i = 0; i < 4; i++)
410 unaligned |= picture.linesize[i] % pool->stride_align[i];
413 tmpsize = av_image_fill_pointers(picture.data, avctx->pix_fmt, h,
414 NULL, picture.linesize);
418 for (i = 0; i < 3 && picture.data[i + 1]; i++)
419 size[i] = picture.data[i + 1] - picture.data[i];
420 size[i] = tmpsize - (picture.data[i] - picture.data[0]);
422 for (i = 0; i < 4; i++) {
423 av_buffer_pool_uninit(&pool->pools[i]);
424 pool->linesize[i] = picture.linesize[i];
426 pool->pools[i] = av_buffer_pool_init(size[i] + 16 + STRIDE_ALIGN - 1,
427 CONFIG_MEMORY_POISONING ?
430 if (!pool->pools[i]) {
431 ret = AVERROR(ENOMEM);
436 pool->format = frame->format;
437 pool->width = frame->width;
438 pool->height = frame->height;
442 case AVMEDIA_TYPE_AUDIO: {
443 int ch = av_frame_get_channels(frame); //av_get_channel_layout_nb_channels(frame->channel_layout);
444 int planar = av_sample_fmt_is_planar(frame->format);
445 int planes = planar ? ch : 1;
447 if (pool->format == frame->format && pool->planes == planes &&
448 pool->channels == ch && frame->nb_samples == pool->samples)
451 av_buffer_pool_uninit(&pool->pools[0]);
452 ret = av_samples_get_buffer_size(&pool->linesize[0], ch,
453 frame->nb_samples, frame->format, 0);
457 pool->pools[0] = av_buffer_pool_init(pool->linesize[0], NULL);
458 if (!pool->pools[0]) {
459 ret = AVERROR(ENOMEM);
463 pool->format = frame->format;
464 pool->planes = planes;
466 pool->samples = frame->nb_samples;
469 default: av_assert0(0);
473 for (i = 0; i < 4; i++)
474 av_buffer_pool_uninit(&pool->pools[i]);
476 pool->planes = pool->channels = pool->samples = 0;
477 pool->width = pool->height = 0;
481 static int audio_get_buffer(AVCodecContext *avctx, AVFrame *frame)
483 FramePool *pool = avctx->internal->pool;
484 int planes = pool->planes;
487 frame->linesize[0] = pool->linesize[0];
489 if (planes > AV_NUM_DATA_POINTERS) {
490 frame->extended_data = av_mallocz(planes * sizeof(*frame->extended_data));
491 frame->nb_extended_buf = planes - AV_NUM_DATA_POINTERS;
492 frame->extended_buf = av_mallocz(frame->nb_extended_buf *
493 sizeof(*frame->extended_buf));
494 if (!frame->extended_data || !frame->extended_buf) {
495 av_freep(&frame->extended_data);
496 av_freep(&frame->extended_buf);
497 return AVERROR(ENOMEM);
500 frame->extended_data = frame->data;
501 av_assert0(frame->nb_extended_buf == 0);
504 for (i = 0; i < FFMIN(planes, AV_NUM_DATA_POINTERS); i++) {
505 frame->buf[i] = av_buffer_pool_get(pool->pools[0]);
508 frame->extended_data[i] = frame->data[i] = frame->buf[i]->data;
510 for (i = 0; i < frame->nb_extended_buf; i++) {
511 frame->extended_buf[i] = av_buffer_pool_get(pool->pools[0]);
512 if (!frame->extended_buf[i])
514 frame->extended_data[i + AV_NUM_DATA_POINTERS] = frame->extended_buf[i]->data;
517 if (avctx->debug & FF_DEBUG_BUFFERS)
518 av_log(avctx, AV_LOG_DEBUG, "default_get_buffer called on frame %p", frame);
522 av_frame_unref(frame);
523 return AVERROR(ENOMEM);
526 static int video_get_buffer(AVCodecContext *s, AVFrame *pic)
528 FramePool *pool = s->internal->pool;
529 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pic->format);
530 int pixel_size = desc->comp[0].step_minus1 + 1;
531 int h_chroma_shift, v_chroma_shift;
534 if (pic->data[0] != NULL) {
535 av_log(s, AV_LOG_ERROR, "pic->data[0]!=NULL in avcodec_default_get_buffer\n");
539 memset(pic->data, 0, sizeof(pic->data));
540 pic->extended_data = pic->data;
542 av_pix_fmt_get_chroma_sub_sample(s->pix_fmt, &h_chroma_shift, &v_chroma_shift);
544 for (i = 0; i < 4 && pool->pools[i]; i++) {
545 const int h_shift = i == 0 ? 0 : h_chroma_shift;
546 const int v_shift = i == 0 ? 0 : v_chroma_shift;
548 pic->linesize[i] = pool->linesize[i];
550 pic->buf[i] = av_buffer_pool_get(pool->pools[i]);
554 // no edge if EDGE EMU or not planar YUV
555 if ((s->flags & CODEC_FLAG_EMU_EDGE) || !pool->pools[2])
556 pic->data[i] = pic->buf[i]->data;
558 pic->data[i] = pic->buf[i]->data +
559 FFALIGN((pic->linesize[i] * EDGE_WIDTH >> v_shift) +
560 (pixel_size * EDGE_WIDTH >> h_shift), pool->stride_align[i]);
563 for (; i < AV_NUM_DATA_POINTERS; i++) {
565 pic->linesize[i] = 0;
567 if (pic->data[1] && !pic->data[2])
568 avpriv_set_systematic_pal2((uint32_t *)pic->data[1], s->pix_fmt);
570 if (s->debug & FF_DEBUG_BUFFERS)
571 av_log(s, AV_LOG_DEBUG, "default_get_buffer called on pic %p\n", pic);
576 return AVERROR(ENOMEM);
579 void avpriv_color_frame(AVFrame *frame, const int c[4])
581 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(frame->format);
584 av_assert0(desc->flags & AV_PIX_FMT_FLAG_PLANAR);
586 for (p = 0; p<desc->nb_components; p++) {
587 uint8_t *dst = frame->data[p];
588 int is_chroma = p == 1 || p == 2;
589 int bytes = is_chroma ? FF_CEIL_RSHIFT(frame->width, desc->log2_chroma_w) : frame->width;
590 int height = is_chroma ? FF_CEIL_RSHIFT(frame->height, desc->log2_chroma_h) : frame->height;
591 for (y = 0; y < height; y++) {
592 if (desc->comp[0].depth_minus1 >= 8) {
593 for (x = 0; x<bytes; x++)
594 ((uint16_t*)dst)[x] = c[p];
596 memset(dst, c[p], bytes);
597 dst += frame->linesize[p];
602 int avcodec_default_get_buffer2(AVCodecContext *avctx, AVFrame *frame, int flags)
606 if ((ret = update_frame_pool(avctx, frame)) < 0)
609 #if FF_API_GET_BUFFER
610 frame->type = FF_BUFFER_TYPE_INTERNAL;
613 switch (avctx->codec_type) {
614 case AVMEDIA_TYPE_VIDEO:
615 return video_get_buffer(avctx, frame);
616 case AVMEDIA_TYPE_AUDIO:
617 return audio_get_buffer(avctx, frame);
623 int ff_init_buffer_info(AVCodecContext *avctx, AVFrame *frame)
626 frame->pkt_pts = avctx->pkt->pts;
627 av_frame_set_pkt_pos (frame, avctx->pkt->pos);
628 av_frame_set_pkt_duration(frame, avctx->pkt->duration);
629 av_frame_set_pkt_size (frame, avctx->pkt->size);
631 frame->pkt_pts = AV_NOPTS_VALUE;
632 av_frame_set_pkt_pos (frame, -1);
633 av_frame_set_pkt_duration(frame, 0);
634 av_frame_set_pkt_size (frame, -1);
636 frame->reordered_opaque = avctx->reordered_opaque;
638 switch (avctx->codec->type) {
639 case AVMEDIA_TYPE_VIDEO:
640 frame->width = FFMAX(avctx->width, FF_CEIL_RSHIFT(avctx->coded_width, avctx->lowres));
641 frame->height = FFMAX(avctx->height, FF_CEIL_RSHIFT(avctx->coded_height, avctx->lowres));
642 if (frame->format < 0)
643 frame->format = avctx->pix_fmt;
644 if (!frame->sample_aspect_ratio.num)
645 frame->sample_aspect_ratio = avctx->sample_aspect_ratio;
647 case AVMEDIA_TYPE_AUDIO:
648 if (!frame->sample_rate)
649 frame->sample_rate = avctx->sample_rate;
650 if (frame->format < 0)
651 frame->format = avctx->sample_fmt;
652 if (!frame->channel_layout) {
653 if (avctx->channel_layout) {
654 if (av_get_channel_layout_nb_channels(avctx->channel_layout) !=
656 av_log(avctx, AV_LOG_ERROR, "Inconsistent channel "
658 return AVERROR(EINVAL);
661 frame->channel_layout = avctx->channel_layout;
663 if (avctx->channels > FF_SANE_NB_CHANNELS) {
664 av_log(avctx, AV_LOG_ERROR, "Too many channels: %d.\n",
666 return AVERROR(ENOSYS);
670 av_frame_set_channels(frame, avctx->channels);
676 #if FF_API_GET_BUFFER
677 int avcodec_default_get_buffer(AVCodecContext *avctx, AVFrame *frame)
679 return avcodec_default_get_buffer2(avctx, frame, 0);
682 typedef struct CompatReleaseBufPriv {
683 AVCodecContext avctx;
685 } CompatReleaseBufPriv;
687 static void compat_free_buffer(void *opaque, uint8_t *data)
689 CompatReleaseBufPriv *priv = opaque;
690 if (priv->avctx.release_buffer)
691 priv->avctx.release_buffer(&priv->avctx, &priv->frame);
695 static void compat_release_buffer(void *opaque, uint8_t *data)
697 AVBufferRef *buf = opaque;
698 av_buffer_unref(&buf);
702 static int get_buffer_internal(AVCodecContext *avctx, AVFrame *frame, int flags)
706 if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
707 if ((ret = av_image_check_size(avctx->width, avctx->height, 0, avctx)) < 0 || avctx->pix_fmt<0) {
708 av_log(avctx, AV_LOG_ERROR, "video_get_buffer: image parameters invalid\n");
709 return AVERROR(EINVAL);
712 if ((ret = ff_init_buffer_info(avctx, frame)) < 0)
715 #if FF_API_GET_BUFFER
717 * Wrap an old get_buffer()-allocated buffer in an bunch of AVBuffers.
718 * We wrap each plane in its own AVBuffer. Each of those has a reference to
719 * a dummy AVBuffer as its private data, unreffing it on free.
720 * When all the planes are freed, the dummy buffer's free callback calls
723 if (avctx->get_buffer) {
724 CompatReleaseBufPriv *priv = NULL;
725 AVBufferRef *dummy_buf = NULL;
728 if (flags & AV_GET_BUFFER_FLAG_REF)
729 frame->reference = 1;
731 ret = avctx->get_buffer(avctx, frame);
735 /* return if the buffers are already set up
736 * this would happen e.g. when a custom get_buffer() calls
737 * avcodec_default_get_buffer
742 priv = av_mallocz(sizeof(*priv));
744 ret = AVERROR(ENOMEM);
747 priv->avctx = *avctx;
748 priv->frame = *frame;
750 dummy_buf = av_buffer_create(NULL, 0, compat_free_buffer, priv, 0);
752 ret = AVERROR(ENOMEM);
756 #define WRAP_PLANE(ref_out, data, data_size) \
758 AVBufferRef *dummy_ref = av_buffer_ref(dummy_buf); \
760 ret = AVERROR(ENOMEM); \
763 ref_out = av_buffer_create(data, data_size, compat_release_buffer, \
766 av_frame_unref(frame); \
767 ret = AVERROR(ENOMEM); \
772 if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
773 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(frame->format);
775 planes = av_pix_fmt_count_planes(frame->format);
776 /* workaround for AVHWAccel plane count of 0, buf[0] is used as
777 check for allocated buffers: make libavcodec happy */
778 if (desc && desc->flags & AV_PIX_FMT_FLAG_HWACCEL)
780 if (!desc || planes <= 0) {
781 ret = AVERROR(EINVAL);
785 for (i = 0; i < planes; i++) {
786 int v_shift = (i == 1 || i == 2) ? desc->log2_chroma_h : 0;
787 int plane_size = (frame->height >> v_shift) * frame->linesize[i];
789 WRAP_PLANE(frame->buf[i], frame->data[i], plane_size);
792 int planar = av_sample_fmt_is_planar(frame->format);
793 planes = planar ? avctx->channels : 1;
795 if (planes > FF_ARRAY_ELEMS(frame->buf)) {
796 frame->nb_extended_buf = planes - FF_ARRAY_ELEMS(frame->buf);
797 frame->extended_buf = av_malloc(sizeof(*frame->extended_buf) *
798 frame->nb_extended_buf);
799 if (!frame->extended_buf) {
800 ret = AVERROR(ENOMEM);
805 for (i = 0; i < FFMIN(planes, FF_ARRAY_ELEMS(frame->buf)); i++)
806 WRAP_PLANE(frame->buf[i], frame->extended_data[i], frame->linesize[0]);
808 for (i = 0; i < frame->nb_extended_buf; i++)
809 WRAP_PLANE(frame->extended_buf[i],
810 frame->extended_data[i + FF_ARRAY_ELEMS(frame->buf)],
814 av_buffer_unref(&dummy_buf);
817 frame->width = avctx->width;
818 frame->height = avctx->height;
823 avctx->release_buffer(avctx, frame);
825 av_buffer_unref(&dummy_buf);
830 ret = avctx->get_buffer2(avctx, frame, flags);
832 if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
833 frame->width = avctx->width;
834 frame->height = avctx->height;
840 int ff_get_buffer(AVCodecContext *avctx, AVFrame *frame, int flags)
842 int ret = get_buffer_internal(avctx, frame, flags);
844 av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
848 static int reget_buffer_internal(AVCodecContext *avctx, AVFrame *frame)
853 av_assert0(avctx->codec_type == AVMEDIA_TYPE_VIDEO);
855 if (frame->data[0] && (frame->width != avctx->width || frame->height != avctx->height || frame->format != avctx->pix_fmt)) {
856 av_log(avctx, AV_LOG_WARNING, "Picture changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s in reget buffer()\n",
857 frame->width, frame->height, av_get_pix_fmt_name(frame->format), avctx->width, avctx->height, av_get_pix_fmt_name(avctx->pix_fmt));
858 av_frame_unref(frame);
861 ff_init_buffer_info(avctx, frame);
864 return ff_get_buffer(avctx, frame, AV_GET_BUFFER_FLAG_REF);
866 if (av_frame_is_writable(frame))
869 av_frame_move_ref(&tmp, frame);
871 ret = ff_get_buffer(avctx, frame, AV_GET_BUFFER_FLAG_REF);
873 av_frame_unref(&tmp);
877 av_image_copy(frame->data, frame->linesize, tmp.data, tmp.linesize,
878 frame->format, frame->width, frame->height);
880 av_frame_unref(&tmp);
885 int ff_reget_buffer(AVCodecContext *avctx, AVFrame *frame)
887 int ret = reget_buffer_internal(avctx, frame);
889 av_log(avctx, AV_LOG_ERROR, "reget_buffer() failed\n");
893 #if FF_API_GET_BUFFER
894 void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic)
896 av_assert0(s->codec_type == AVMEDIA_TYPE_VIDEO);
901 int avcodec_default_reget_buffer(AVCodecContext *s, AVFrame *pic)
908 int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2), void *arg, int *ret, int count, int size)
912 for (i = 0; i < count; i++) {
913 int r = func(c, (char *)arg + i * size);
920 int avcodec_default_execute2(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2, int jobnr, int threadnr), void *arg, int *ret, int count)
924 for (i = 0; i < count; i++) {
925 int r = func(c, arg, i, 0);
932 static int is_hwaccel_pix_fmt(enum AVPixelFormat pix_fmt)
934 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
935 return desc->flags & AV_PIX_FMT_FLAG_HWACCEL;
938 enum AVPixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum AVPixelFormat *fmt)
940 while (*fmt != AV_PIX_FMT_NONE && is_hwaccel_pix_fmt(*fmt))
945 void avcodec_get_frame_defaults(AVFrame *frame)
947 #if LIBAVCODEC_VERSION_MAJOR >= 55
948 // extended_data should explicitly be freed when needed, this code is unsafe currently
949 // also this is not compatible to the <55 ABI/API
950 if (frame->extended_data != frame->data && 0)
951 av_freep(&frame->extended_data);
954 memset(frame, 0, sizeof(AVFrame));
958 frame->pkt_pts = AV_NOPTS_VALUE;
959 av_frame_set_best_effort_timestamp(frame, AV_NOPTS_VALUE);
960 av_frame_set_pkt_duration (frame, 0);
961 av_frame_set_pkt_pos (frame, -1);
962 av_frame_set_pkt_size (frame, -1);
963 frame->key_frame = 1;
964 frame->sample_aspect_ratio = (AVRational) {0, 1 };
965 frame->format = -1; /* unknown */
966 frame->extended_data = frame->data;
969 AVFrame *avcodec_alloc_frame(void)
971 AVFrame *frame = av_malloc(sizeof(AVFrame));
976 frame->extended_data = NULL;
977 avcodec_get_frame_defaults(frame);
982 void avcodec_free_frame(AVFrame **frame)
986 if (!frame || !*frame)
991 if (f->extended_data != f->data)
992 av_freep(&f->extended_data);
997 #define MAKE_ACCESSORS(str, name, type, field) \
998 type av_##name##_get_##field(const str *s) { return s->field; } \
999 void av_##name##_set_##field(str *s, type v) { s->field = v; }
1001 MAKE_ACCESSORS(AVCodecContext, codec, AVRational, pkt_timebase)
1002 MAKE_ACCESSORS(AVCodecContext, codec, const AVCodecDescriptor *, codec_descriptor)
1003 MAKE_ACCESSORS(AVCodecContext, codec, int, lowres)
1005 static void avcodec_get_subtitle_defaults(AVSubtitle *sub)
1007 memset(sub, 0, sizeof(*sub));
1008 sub->pts = AV_NOPTS_VALUE;
1011 static int get_bit_rate(AVCodecContext *ctx)
1014 int bits_per_sample;
1016 switch (ctx->codec_type) {
1017 case AVMEDIA_TYPE_VIDEO:
1018 case AVMEDIA_TYPE_DATA:
1019 case AVMEDIA_TYPE_SUBTITLE:
1020 case AVMEDIA_TYPE_ATTACHMENT:
1021 bit_rate = ctx->bit_rate;
1023 case AVMEDIA_TYPE_AUDIO:
1024 bits_per_sample = av_get_bits_per_sample(ctx->codec_id);
1025 bit_rate = bits_per_sample ? ctx->sample_rate * ctx->channels * bits_per_sample : ctx->bit_rate;
1034 #if FF_API_AVCODEC_OPEN
1035 int attribute_align_arg avcodec_open(AVCodecContext *avctx, AVCodec *codec)
1037 return avcodec_open2(avctx, codec, NULL);
1041 int attribute_align_arg ff_codec_open2_recursive(AVCodecContext *avctx, const AVCodec *codec, AVDictionary **options)
1045 ff_unlock_avcodec();
1047 ret = avcodec_open2(avctx, codec, options);
1049 ff_lock_avcodec(avctx);
1053 int attribute_align_arg avcodec_open2(AVCodecContext *avctx, const AVCodec *codec, AVDictionary **options)
1056 AVDictionary *tmp = NULL;
1058 if (avcodec_is_open(avctx))
1061 if ((!codec && !avctx->codec)) {
1062 av_log(avctx, AV_LOG_ERROR, "No codec provided to avcodec_open2()\n");
1063 return AVERROR(EINVAL);
1065 if ((codec && avctx->codec && codec != avctx->codec)) {
1066 av_log(avctx, AV_LOG_ERROR, "This AVCodecContext was allocated for %s, "
1067 "but %s passed to avcodec_open2()\n", avctx->codec->name, codec->name);
1068 return AVERROR(EINVAL);
1071 codec = avctx->codec;
1073 if (avctx->extradata_size < 0 || avctx->extradata_size >= FF_MAX_EXTRADATA_SIZE)
1074 return AVERROR(EINVAL);
1077 av_dict_copy(&tmp, *options, 0);
1079 ret = ff_lock_avcodec(avctx);
1083 avctx->internal = av_mallocz(sizeof(AVCodecInternal));
1084 if (!avctx->internal) {
1085 ret = AVERROR(ENOMEM);
1089 avctx->internal->pool = av_mallocz(sizeof(*avctx->internal->pool));
1090 if (!avctx->internal->pool) {
1091 ret = AVERROR(ENOMEM);
1095 if (codec->priv_data_size > 0) {
1096 if (!avctx->priv_data) {
1097 avctx->priv_data = av_mallocz(codec->priv_data_size);
1098 if (!avctx->priv_data) {
1099 ret = AVERROR(ENOMEM);
1102 if (codec->priv_class) {
1103 *(const AVClass **)avctx->priv_data = codec->priv_class;
1104 av_opt_set_defaults(avctx->priv_data);
1107 if (codec->priv_class && (ret = av_opt_set_dict(avctx->priv_data, &tmp)) < 0)
1110 avctx->priv_data = NULL;
1112 if ((ret = av_opt_set_dict(avctx, &tmp)) < 0)
1115 // only call avcodec_set_dimensions() for non H.264/VP6F codecs so as not to overwrite previously setup dimensions
1116 if (!(avctx->coded_width && avctx->coded_height && avctx->width && avctx->height &&
1117 (avctx->codec_id == AV_CODEC_ID_H264 || avctx->codec_id == AV_CODEC_ID_VP6F))) {
1118 if (avctx->coded_width && avctx->coded_height)
1119 avcodec_set_dimensions(avctx, avctx->coded_width, avctx->coded_height);
1120 else if (avctx->width && avctx->height)
1121 avcodec_set_dimensions(avctx, avctx->width, avctx->height);
1124 if ((avctx->coded_width || avctx->coded_height || avctx->width || avctx->height)
1125 && ( av_image_check_size(avctx->coded_width, avctx->coded_height, 0, avctx) < 0
1126 || av_image_check_size(avctx->width, avctx->height, 0, avctx) < 0)) {
1127 av_log(avctx, AV_LOG_WARNING, "Ignoring invalid width/height values\n");
1128 avcodec_set_dimensions(avctx, 0, 0);
1131 /* if the decoder init function was already called previously,
1132 * free the already allocated subtitle_header before overwriting it */
1133 if (av_codec_is_decoder(codec))
1134 av_freep(&avctx->subtitle_header);
1136 if (avctx->channels > FF_SANE_NB_CHANNELS) {
1137 ret = AVERROR(EINVAL);
1141 avctx->codec = codec;
1142 if ((avctx->codec_type == AVMEDIA_TYPE_UNKNOWN || avctx->codec_type == codec->type) &&
1143 avctx->codec_id == AV_CODEC_ID_NONE) {
1144 avctx->codec_type = codec->type;
1145 avctx->codec_id = codec->id;
1147 if (avctx->codec_id != codec->id || (avctx->codec_type != codec->type
1148 && avctx->codec_type != AVMEDIA_TYPE_ATTACHMENT)) {
1149 av_log(avctx, AV_LOG_ERROR, "Codec type or id mismatches\n");
1150 ret = AVERROR(EINVAL);
1153 avctx->frame_number = 0;
1154 avctx->codec_descriptor = avcodec_descriptor_get(avctx->codec_id);
1156 if (avctx->codec->capabilities & CODEC_CAP_EXPERIMENTAL &&
1157 avctx->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
1158 const char *codec_string = av_codec_is_encoder(codec) ? "encoder" : "decoder";
1160 av_log(avctx, AV_LOG_ERROR,
1161 "The %s '%s' is experimental but experimental codecs are not enabled, "
1162 "add '-strict %d' if you want to use it.\n",
1163 codec_string, codec->name, FF_COMPLIANCE_EXPERIMENTAL);
1164 codec2 = av_codec_is_encoder(codec) ? avcodec_find_encoder(codec->id) : avcodec_find_decoder(codec->id);
1165 if (!(codec2->capabilities & CODEC_CAP_EXPERIMENTAL))
1166 av_log(avctx, AV_LOG_ERROR, "Alternatively use the non experimental %s '%s'.\n",
1167 codec_string, codec2->name);
1168 ret = AVERROR_EXPERIMENTAL;
1172 if (avctx->codec_type == AVMEDIA_TYPE_AUDIO &&
1173 (!avctx->time_base.num || !avctx->time_base.den)) {
1174 avctx->time_base.num = 1;
1175 avctx->time_base.den = avctx->sample_rate;
1179 av_log(avctx, AV_LOG_WARNING, "Warning: not compiled with thread support, using thread emulation\n");
1181 if (CONFIG_FRAME_THREAD_ENCODER) {
1182 ff_unlock_avcodec(); //we will instanciate a few encoders thus kick the counter to prevent false detection of a problem
1183 ret = ff_frame_thread_encoder_init(avctx, options ? *options : NULL);
1184 ff_lock_avcodec(avctx);
1190 && !(avctx->internal->frame_thread_encoder && (avctx->active_thread_type&FF_THREAD_FRAME))) {
1191 ret = ff_thread_init(avctx);
1196 if (!HAVE_THREADS && !(codec->capabilities & CODEC_CAP_AUTO_THREADS))
1197 avctx->thread_count = 1;
1199 if (avctx->codec->max_lowres < avctx->lowres || avctx->lowres < 0) {
1200 av_log(avctx, AV_LOG_ERROR, "The maximum value for lowres supported by the decoder is %d\n",
1201 avctx->codec->max_lowres);
1202 ret = AVERROR(EINVAL);
1206 if (av_codec_is_encoder(avctx->codec)) {
1208 if (avctx->codec->sample_fmts) {
1209 for (i = 0; avctx->codec->sample_fmts[i] != AV_SAMPLE_FMT_NONE; i++) {
1210 if (avctx->sample_fmt == avctx->codec->sample_fmts[i])
1212 if (avctx->channels == 1 &&
1213 av_get_planar_sample_fmt(avctx->sample_fmt) ==
1214 av_get_planar_sample_fmt(avctx->codec->sample_fmts[i])) {
1215 avctx->sample_fmt = avctx->codec->sample_fmts[i];
1219 if (avctx->codec->sample_fmts[i] == AV_SAMPLE_FMT_NONE) {
1221 snprintf(buf, sizeof(buf), "%d", avctx->sample_fmt);
1222 av_log(avctx, AV_LOG_ERROR, "Specified sample format %s is invalid or not supported\n",
1223 (char *)av_x_if_null(av_get_sample_fmt_name(avctx->sample_fmt), buf));
1224 ret = AVERROR(EINVAL);
1228 if (avctx->codec->pix_fmts) {
1229 for (i = 0; avctx->codec->pix_fmts[i] != AV_PIX_FMT_NONE; i++)
1230 if (avctx->pix_fmt == avctx->codec->pix_fmts[i])
1232 if (avctx->codec->pix_fmts[i] == AV_PIX_FMT_NONE
1233 && !((avctx->codec_id == AV_CODEC_ID_MJPEG || avctx->codec_id == AV_CODEC_ID_LJPEG)
1234 && avctx->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL)) {
1236 snprintf(buf, sizeof(buf), "%d", avctx->pix_fmt);
1237 av_log(avctx, AV_LOG_ERROR, "Specified pixel format %s is invalid or not supported\n",
1238 (char *)av_x_if_null(av_get_pix_fmt_name(avctx->pix_fmt), buf));
1239 ret = AVERROR(EINVAL);
1243 if (avctx->codec->supported_samplerates) {
1244 for (i = 0; avctx->codec->supported_samplerates[i] != 0; i++)
1245 if (avctx->sample_rate == avctx->codec->supported_samplerates[i])
1247 if (avctx->codec->supported_samplerates[i] == 0) {
1248 av_log(avctx, AV_LOG_ERROR, "Specified sample rate %d is not supported\n",
1249 avctx->sample_rate);
1250 ret = AVERROR(EINVAL);
1254 if (avctx->codec->channel_layouts) {
1255 if (!avctx->channel_layout) {
1256 av_log(avctx, AV_LOG_WARNING, "Channel layout not specified\n");
1258 for (i = 0; avctx->codec->channel_layouts[i] != 0; i++)
1259 if (avctx->channel_layout == avctx->codec->channel_layouts[i])
1261 if (avctx->codec->channel_layouts[i] == 0) {
1263 av_get_channel_layout_string(buf, sizeof(buf), -1, avctx->channel_layout);
1264 av_log(avctx, AV_LOG_ERROR, "Specified channel layout '%s' is not supported\n", buf);
1265 ret = AVERROR(EINVAL);
1270 if (avctx->channel_layout && avctx->channels) {
1271 int channels = av_get_channel_layout_nb_channels(avctx->channel_layout);
1272 if (channels != avctx->channels) {
1274 av_get_channel_layout_string(buf, sizeof(buf), -1, avctx->channel_layout);
1275 av_log(avctx, AV_LOG_ERROR,
1276 "Channel layout '%s' with %d channels does not match number of specified channels %d\n",
1277 buf, channels, avctx->channels);
1278 ret = AVERROR(EINVAL);
1281 } else if (avctx->channel_layout) {
1282 avctx->channels = av_get_channel_layout_nb_channels(avctx->channel_layout);
1284 if(avctx->codec_type == AVMEDIA_TYPE_VIDEO &&
1285 avctx->codec_id != AV_CODEC_ID_PNG // For mplayer
1287 if (avctx->width <= 0 || avctx->height <= 0) {
1288 av_log(avctx, AV_LOG_ERROR, "dimensions not set\n");
1289 ret = AVERROR(EINVAL);
1293 if ( (avctx->codec_type == AVMEDIA_TYPE_VIDEO || avctx->codec_type == AVMEDIA_TYPE_AUDIO)
1294 && avctx->bit_rate>0 && avctx->bit_rate<1000) {
1295 av_log(avctx, AV_LOG_WARNING, "Bitrate %d is extremely low, maybe you mean %dk\n", avctx->bit_rate, avctx->bit_rate);
1298 if (!avctx->rc_initial_buffer_occupancy)
1299 avctx->rc_initial_buffer_occupancy = avctx->rc_buffer_size * 3 / 4;
1302 avctx->pts_correction_num_faulty_pts =
1303 avctx->pts_correction_num_faulty_dts = 0;
1304 avctx->pts_correction_last_pts =
1305 avctx->pts_correction_last_dts = INT64_MIN;
1307 if ( avctx->codec->init && (!(avctx->active_thread_type&FF_THREAD_FRAME)
1308 || avctx->internal->frame_thread_encoder)) {
1309 ret = avctx->codec->init(avctx);
1317 if (av_codec_is_decoder(avctx->codec)) {
1318 if (!avctx->bit_rate)
1319 avctx->bit_rate = get_bit_rate(avctx);
1320 /* validate channel layout from the decoder */
1321 if (avctx->channel_layout) {
1322 int channels = av_get_channel_layout_nb_channels(avctx->channel_layout);
1323 if (!avctx->channels)
1324 avctx->channels = channels;
1325 else if (channels != avctx->channels) {
1327 av_get_channel_layout_string(buf, sizeof(buf), -1, avctx->channel_layout);
1328 av_log(avctx, AV_LOG_WARNING,
1329 "Channel layout '%s' with %d channels does not match specified number of channels %d: "
1330 "ignoring specified channel layout\n",
1331 buf, channels, avctx->channels);
1332 avctx->channel_layout = 0;
1335 if (avctx->channels && avctx->channels < 0 ||
1336 avctx->channels > FF_SANE_NB_CHANNELS) {
1337 ret = AVERROR(EINVAL);
1340 if (avctx->sub_charenc) {
1341 if (avctx->codec_type != AVMEDIA_TYPE_SUBTITLE) {
1342 av_log(avctx, AV_LOG_ERROR, "Character encoding is only "
1343 "supported with subtitles codecs\n");
1344 ret = AVERROR(EINVAL);
1346 } else if (avctx->codec_descriptor->props & AV_CODEC_PROP_BITMAP_SUB) {
1347 av_log(avctx, AV_LOG_WARNING, "Codec '%s' is bitmap-based, "
1348 "subtitles character encoding will be ignored\n",
1349 avctx->codec_descriptor->name);
1350 avctx->sub_charenc_mode = FF_SUB_CHARENC_MODE_DO_NOTHING;
1352 /* input character encoding is set for a text based subtitle
1353 * codec at this point */
1354 if (avctx->sub_charenc_mode == FF_SUB_CHARENC_MODE_AUTOMATIC)
1355 avctx->sub_charenc_mode = FF_SUB_CHARENC_MODE_PRE_DECODER;
1357 if (avctx->sub_charenc_mode == FF_SUB_CHARENC_MODE_PRE_DECODER) {
1359 iconv_t cd = iconv_open("UTF-8", avctx->sub_charenc);
1360 if (cd == (iconv_t)-1) {
1361 av_log(avctx, AV_LOG_ERROR, "Unable to open iconv context "
1362 "with input character encoding \"%s\"\n", avctx->sub_charenc);
1363 ret = AVERROR(errno);
1368 av_log(avctx, AV_LOG_ERROR, "Character encoding subtitles "
1369 "conversion needs a libavcodec built with iconv support "
1370 "for this codec\n");
1371 ret = AVERROR(ENOSYS);
1379 ff_unlock_avcodec();
1381 av_dict_free(options);
1388 av_freep(&avctx->priv_data);
1389 if (avctx->internal)
1390 av_freep(&avctx->internal->pool);
1391 av_freep(&avctx->internal);
1392 avctx->codec = NULL;
1396 int ff_alloc_packet2(AVCodecContext *avctx, AVPacket *avpkt, int size)
1398 if (size < 0 || avpkt->size < 0 || size > INT_MAX - FF_INPUT_BUFFER_PADDING_SIZE) {
1399 av_log(avctx, AV_LOG_ERROR, "Size %d invalid\n", size);
1400 return AVERROR(EINVAL);
1404 av_assert0(!avpkt->data || avpkt->data != avctx->internal->byte_buffer);
1405 if (!avpkt->data || avpkt->size < size) {
1406 av_fast_padded_malloc(&avctx->internal->byte_buffer, &avctx->internal->byte_buffer_size, size);
1407 avpkt->data = avctx->internal->byte_buffer;
1408 avpkt->size = avctx->internal->byte_buffer_size;
1409 avpkt->destruct = NULL;
1414 AVBufferRef *buf = avpkt->buf;
1415 #if FF_API_DESTRUCT_PACKET
1416 void *destruct = avpkt->destruct;
1419 if (avpkt->size < size) {
1420 av_log(avctx, AV_LOG_ERROR, "User packet is too small (%d < %d)\n", avpkt->size, size);
1421 return AVERROR(EINVAL);
1424 av_init_packet(avpkt);
1425 #if FF_API_DESTRUCT_PACKET
1426 avpkt->destruct = destruct;
1432 int ret = av_new_packet(avpkt, size);
1434 av_log(avctx, AV_LOG_ERROR, "Failed to allocate packet of size %d\n", size);
1439 int ff_alloc_packet(AVPacket *avpkt, int size)
1441 return ff_alloc_packet2(NULL, avpkt, size);
1445 * Pad last frame with silence.
1447 static int pad_last_frame(AVCodecContext *s, AVFrame **dst, const AVFrame *src)
1449 AVFrame *frame = NULL;
1450 uint8_t *buf = NULL;
1453 if (!(frame = avcodec_alloc_frame()))
1454 return AVERROR(ENOMEM);
1457 if ((ret = av_samples_get_buffer_size(&frame->linesize[0], s->channels,
1458 s->frame_size, s->sample_fmt, 0)) < 0)
1461 if (!(buf = av_malloc(ret))) {
1462 ret = AVERROR(ENOMEM);
1466 frame->nb_samples = s->frame_size;
1467 if ((ret = avcodec_fill_audio_frame(frame, s->channels, s->sample_fmt,
1470 if ((ret = av_samples_copy(frame->extended_data, src->extended_data, 0, 0,
1471 src->nb_samples, s->channels, s->sample_fmt)) < 0)
1473 if ((ret = av_samples_set_silence(frame->extended_data, src->nb_samples,
1474 frame->nb_samples - src->nb_samples,
1475 s->channels, s->sample_fmt)) < 0)
1483 if (frame->extended_data != frame->data)
1484 av_freep(&frame->extended_data);
1490 int attribute_align_arg avcodec_encode_audio2(AVCodecContext *avctx,
1492 const AVFrame *frame,
1493 int *got_packet_ptr)
1496 AVFrame *padded_frame = NULL;
1498 AVPacket user_pkt = *avpkt;
1499 int needs_realloc = !user_pkt.data;
1501 *got_packet_ptr = 0;
1503 if (!(avctx->codec->capabilities & CODEC_CAP_DELAY) && !frame) {
1504 av_free_packet(avpkt);
1505 av_init_packet(avpkt);
1509 /* ensure that extended_data is properly set */
1510 if (frame && !frame->extended_data) {
1511 if (av_sample_fmt_is_planar(avctx->sample_fmt) &&
1512 avctx->channels > AV_NUM_DATA_POINTERS) {
1513 av_log(avctx, AV_LOG_ERROR, "Encoding to a planar sample format, "
1514 "with more than %d channels, but extended_data is not set.\n",
1515 AV_NUM_DATA_POINTERS);
1516 return AVERROR(EINVAL);
1518 av_log(avctx, AV_LOG_WARNING, "extended_data is not set.\n");
1521 tmp.extended_data = tmp.data;
1525 /* check for valid frame size */
1527 if (avctx->codec->capabilities & CODEC_CAP_SMALL_LAST_FRAME) {
1528 if (frame->nb_samples > avctx->frame_size) {
1529 av_log(avctx, AV_LOG_ERROR, "more samples than frame size (avcodec_encode_audio2)\n");
1530 return AVERROR(EINVAL);
1532 } else if (!(avctx->codec->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE)) {
1533 if (frame->nb_samples < avctx->frame_size &&
1534 !avctx->internal->last_audio_frame) {
1535 ret = pad_last_frame(avctx, &padded_frame, frame);
1539 frame = padded_frame;
1540 avctx->internal->last_audio_frame = 1;
1543 if (frame->nb_samples != avctx->frame_size) {
1544 av_log(avctx, AV_LOG_ERROR, "nb_samples (%d) != frame_size (%d) (avcodec_encode_audio2)\n", frame->nb_samples, avctx->frame_size);
1545 ret = AVERROR(EINVAL);
1551 ret = avctx->codec->encode2(avctx, avpkt, frame, got_packet_ptr);
1553 if (*got_packet_ptr) {
1554 if (!(avctx->codec->capabilities & CODEC_CAP_DELAY)) {
1555 if (avpkt->pts == AV_NOPTS_VALUE)
1556 avpkt->pts = frame->pts;
1557 if (!avpkt->duration)
1558 avpkt->duration = ff_samples_to_time_base(avctx,
1561 avpkt->dts = avpkt->pts;
1566 if (avpkt->data && avpkt->data == avctx->internal->byte_buffer) {
1568 if (user_pkt.data) {
1569 if (user_pkt.size >= avpkt->size) {
1570 memcpy(user_pkt.data, avpkt->data, avpkt->size);
1572 av_log(avctx, AV_LOG_ERROR, "Provided packet is too small, needs to be %d\n", avpkt->size);
1573 avpkt->size = user_pkt.size;
1576 avpkt->buf = user_pkt.buf;
1577 avpkt->data = user_pkt.data;
1578 avpkt->destruct = user_pkt.destruct;
1580 if (av_dup_packet(avpkt) < 0) {
1581 ret = AVERROR(ENOMEM);
1587 if (needs_realloc && avpkt->data) {
1588 ret = av_buffer_realloc(&avpkt->buf, avpkt->size + FF_INPUT_BUFFER_PADDING_SIZE);
1590 avpkt->data = avpkt->buf->data;
1593 avctx->frame_number++;
1596 if (ret < 0 || !*got_packet_ptr) {
1597 av_free_packet(avpkt);
1598 av_init_packet(avpkt);
1602 /* NOTE: if we add any audio encoders which output non-keyframe packets,
1603 * this needs to be moved to the encoders, but for now we can do it
1604 * here to simplify things */
1605 avpkt->flags |= AV_PKT_FLAG_KEY;
1609 av_freep(&padded_frame->data[0]);
1610 if (padded_frame->extended_data != padded_frame->data)
1611 av_freep(&padded_frame->extended_data);
1612 av_freep(&padded_frame);
1618 #if FF_API_OLD_ENCODE_AUDIO
1619 int attribute_align_arg avcodec_encode_audio(AVCodecContext *avctx,
1620 uint8_t *buf, int buf_size,
1621 const short *samples)
1624 AVFrame frame0 = { { 0 } };
1626 int ret, samples_size, got_packet;
1628 av_init_packet(&pkt);
1630 pkt.size = buf_size;
1634 avcodec_get_frame_defaults(frame);
1636 if (avctx->frame_size) {
1637 frame->nb_samples = avctx->frame_size;
1639 /* if frame_size is not set, the number of samples must be
1640 * calculated from the buffer size */
1642 if (!av_get_bits_per_sample(avctx->codec_id)) {
1643 av_log(avctx, AV_LOG_ERROR, "avcodec_encode_audio() does not "
1644 "support this codec\n");
1645 return AVERROR(EINVAL);
1647 nb_samples = (int64_t)buf_size * 8 /
1648 (av_get_bits_per_sample(avctx->codec_id) *
1650 if (nb_samples >= INT_MAX)
1651 return AVERROR(EINVAL);
1652 frame->nb_samples = nb_samples;
1655 /* it is assumed that the samples buffer is large enough based on the
1656 * relevant parameters */
1657 samples_size = av_samples_get_buffer_size(NULL, avctx->channels,
1659 avctx->sample_fmt, 1);
1660 if ((ret = avcodec_fill_audio_frame(frame, avctx->channels,
1662 (const uint8_t *)samples,
1663 samples_size, 1)) < 0)
1666 /* fabricate frame pts from sample count.
1667 * this is needed because the avcodec_encode_audio() API does not have
1668 * a way for the user to provide pts */
1669 if (avctx->sample_rate && avctx->time_base.num)
1670 frame->pts = ff_samples_to_time_base(avctx,
1671 avctx->internal->sample_count);
1673 frame->pts = AV_NOPTS_VALUE;
1674 avctx->internal->sample_count += frame->nb_samples;
1680 ret = avcodec_encode_audio2(avctx, &pkt, frame, &got_packet);
1681 if (!ret && got_packet && avctx->coded_frame) {
1682 avctx->coded_frame->pts = pkt.pts;
1683 avctx->coded_frame->key_frame = !!(pkt.flags & AV_PKT_FLAG_KEY);
1685 /* free any side data since we cannot return it */
1686 ff_packet_free_side_data(&pkt);
1688 if (frame && frame->extended_data != frame->data)
1689 av_freep(&frame->extended_data);
1691 return ret ? ret : pkt.size;
1696 #if FF_API_OLD_ENCODE_VIDEO
1697 int attribute_align_arg avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size,
1698 const AVFrame *pict)
1701 int ret, got_packet = 0;
1703 if (buf_size < FF_MIN_BUFFER_SIZE) {
1704 av_log(avctx, AV_LOG_ERROR, "buffer smaller than minimum size\n");
1708 av_init_packet(&pkt);
1710 pkt.size = buf_size;
1712 ret = avcodec_encode_video2(avctx, &pkt, pict, &got_packet);
1713 if (!ret && got_packet && avctx->coded_frame) {
1714 avctx->coded_frame->pts = pkt.pts;
1715 avctx->coded_frame->key_frame = !!(pkt.flags & AV_PKT_FLAG_KEY);
1718 /* free any side data since we cannot return it */
1719 if (pkt.side_data_elems > 0) {
1721 for (i = 0; i < pkt.side_data_elems; i++)
1722 av_free(pkt.side_data[i].data);
1723 av_freep(&pkt.side_data);
1724 pkt.side_data_elems = 0;
1727 return ret ? ret : pkt.size;
1732 int attribute_align_arg avcodec_encode_video2(AVCodecContext *avctx,
1734 const AVFrame *frame,
1735 int *got_packet_ptr)
1738 AVPacket user_pkt = *avpkt;
1739 int needs_realloc = !user_pkt.data;
1741 *got_packet_ptr = 0;
1743 if(CONFIG_FRAME_THREAD_ENCODER &&
1744 avctx->internal->frame_thread_encoder && (avctx->active_thread_type&FF_THREAD_FRAME))
1745 return ff_thread_video_encode_frame(avctx, avpkt, frame, got_packet_ptr);
1747 if ((avctx->flags&CODEC_FLAG_PASS1) && avctx->stats_out)
1748 avctx->stats_out[0] = '\0';
1750 if (!(avctx->codec->capabilities & CODEC_CAP_DELAY) && !frame) {
1751 av_free_packet(avpkt);
1752 av_init_packet(avpkt);
1757 if (av_image_check_size(avctx->width, avctx->height, 0, avctx))
1758 return AVERROR(EINVAL);
1760 av_assert0(avctx->codec->encode2);
1762 ret = avctx->codec->encode2(avctx, avpkt, frame, got_packet_ptr);
1763 av_assert0(ret <= 0);
1765 if (avpkt->data && avpkt->data == avctx->internal->byte_buffer) {
1767 if (user_pkt.data) {
1768 if (user_pkt.size >= avpkt->size) {
1769 memcpy(user_pkt.data, avpkt->data, avpkt->size);
1771 av_log(avctx, AV_LOG_ERROR, "Provided packet is too small, needs to be %d\n", avpkt->size);
1772 avpkt->size = user_pkt.size;
1775 avpkt->buf = user_pkt.buf;
1776 avpkt->data = user_pkt.data;
1777 avpkt->destruct = user_pkt.destruct;
1779 if (av_dup_packet(avpkt) < 0) {
1780 ret = AVERROR(ENOMEM);
1786 if (!*got_packet_ptr)
1788 else if (!(avctx->codec->capabilities & CODEC_CAP_DELAY))
1789 avpkt->pts = avpkt->dts = frame->pts;
1791 if (needs_realloc && avpkt->data) {
1792 ret = av_buffer_realloc(&avpkt->buf, avpkt->size + FF_INPUT_BUFFER_PADDING_SIZE);
1794 avpkt->data = avpkt->buf->data;
1797 avctx->frame_number++;
1800 if (ret < 0 || !*got_packet_ptr)
1801 av_free_packet(avpkt);
1803 av_packet_merge_side_data(avpkt);
1809 int avcodec_encode_subtitle(AVCodecContext *avctx, uint8_t *buf, int buf_size,
1810 const AVSubtitle *sub)
1813 if (sub->start_display_time) {
1814 av_log(avctx, AV_LOG_ERROR, "start_display_time must be 0.\n");
1818 ret = avctx->codec->encode_sub(avctx, buf, buf_size, sub);
1819 avctx->frame_number++;
1824 * Attempt to guess proper monotonic timestamps for decoded video frames
1825 * which might have incorrect times. Input timestamps may wrap around, in
1826 * which case the output will as well.
1828 * @param pts the pts field of the decoded AVPacket, as passed through
1830 * @param dts the dts field of the decoded AVPacket
1831 * @return one of the input values, may be AV_NOPTS_VALUE
1833 static int64_t guess_correct_pts(AVCodecContext *ctx,
1834 int64_t reordered_pts, int64_t dts)
1836 int64_t pts = AV_NOPTS_VALUE;
1838 if (dts != AV_NOPTS_VALUE) {
1839 ctx->pts_correction_num_faulty_dts += dts <= ctx->pts_correction_last_dts;
1840 ctx->pts_correction_last_dts = dts;
1842 if (reordered_pts != AV_NOPTS_VALUE) {
1843 ctx->pts_correction_num_faulty_pts += reordered_pts <= ctx->pts_correction_last_pts;
1844 ctx->pts_correction_last_pts = reordered_pts;
1846 if ((ctx->pts_correction_num_faulty_pts<=ctx->pts_correction_num_faulty_dts || dts == AV_NOPTS_VALUE)
1847 && reordered_pts != AV_NOPTS_VALUE)
1848 pts = reordered_pts;
1855 static void apply_param_change(AVCodecContext *avctx, AVPacket *avpkt)
1858 const uint8_t *data;
1861 if (!(avctx->codec->capabilities & CODEC_CAP_PARAM_CHANGE))
1864 data = av_packet_get_side_data(avpkt, AV_PKT_DATA_PARAM_CHANGE, &size);
1865 if (!data || size < 4)
1867 flags = bytestream_get_le32(&data);
1869 if (size < 4) /* Required for any of the changes */
1871 if (flags & AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_COUNT) {
1872 avctx->channels = bytestream_get_le32(&data);
1875 if (flags & AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_LAYOUT) {
1878 avctx->channel_layout = bytestream_get_le64(&data);
1883 if (flags & AV_SIDE_DATA_PARAM_CHANGE_SAMPLE_RATE) {
1884 avctx->sample_rate = bytestream_get_le32(&data);
1887 if (flags & AV_SIDE_DATA_PARAM_CHANGE_DIMENSIONS) {
1890 avctx->width = bytestream_get_le32(&data);
1891 avctx->height = bytestream_get_le32(&data);
1892 avcodec_set_dimensions(avctx, avctx->width, avctx->height);
1897 static int add_metadata_from_side_data(AVCodecContext *avctx, AVFrame *frame)
1900 const uint8_t *side_metadata;
1903 side_metadata = av_packet_get_side_data(avctx->pkt,
1904 AV_PKT_DATA_STRINGS_METADATA, &size);
1907 end = side_metadata + size;
1908 while (side_metadata < end) {
1909 const uint8_t *key = side_metadata;
1910 const uint8_t *val = side_metadata + strlen(key) + 1;
1911 int ret = av_dict_set(avpriv_frame_get_metadatap(frame), key, val, 0);
1914 side_metadata = val + strlen(val) + 1;
1920 int attribute_align_arg avcodec_decode_video2(AVCodecContext *avctx, AVFrame *picture,
1921 int *got_picture_ptr,
1922 const AVPacket *avpkt)
1924 AVCodecInternal *avci = avctx->internal;
1926 // copy to ensure we do not change avpkt
1927 AVPacket tmp = *avpkt;
1929 if (avctx->codec->type != AVMEDIA_TYPE_VIDEO) {
1930 av_log(avctx, AV_LOG_ERROR, "Invalid media type for video\n");
1931 return AVERROR(EINVAL);
1934 *got_picture_ptr = 0;
1935 if ((avctx->coded_width || avctx->coded_height) && av_image_check_size(avctx->coded_width, avctx->coded_height, 0, avctx))
1936 return AVERROR(EINVAL);
1938 avcodec_get_frame_defaults(picture);
1940 if (!avctx->refcounted_frames)
1941 av_frame_unref(&avci->to_free);
1943 if ((avctx->codec->capabilities & CODEC_CAP_DELAY) || avpkt->size || (avctx->active_thread_type & FF_THREAD_FRAME)) {
1944 int did_split = av_packet_split_side_data(&tmp);
1945 apply_param_change(avctx, &tmp);
1947 if (HAVE_THREADS && avctx->active_thread_type & FF_THREAD_FRAME)
1948 ret = ff_thread_decode_frame(avctx, picture, got_picture_ptr,
1951 ret = avctx->codec->decode(avctx, picture, got_picture_ptr,
1953 picture->pkt_dts = avpkt->dts;
1955 if(!avctx->has_b_frames){
1956 av_frame_set_pkt_pos(picture, avpkt->pos);
1958 //FIXME these should be under if(!avctx->has_b_frames)
1959 /* get_buffer is supposed to set frame parameters */
1960 if (!(avctx->codec->capabilities & CODEC_CAP_DR1)) {
1961 if (!picture->sample_aspect_ratio.num) picture->sample_aspect_ratio = avctx->sample_aspect_ratio;
1962 if (!picture->width) picture->width = avctx->width;
1963 if (!picture->height) picture->height = avctx->height;
1964 if (picture->format == AV_PIX_FMT_NONE) picture->format = avctx->pix_fmt;
1967 add_metadata_from_side_data(avctx, picture);
1969 emms_c(); //needed to avoid an emms_c() call before every return;
1973 ff_packet_free_side_data(&tmp);
1978 if (ret < 0 && picture->data[0])
1979 av_frame_unref(picture);
1981 if (*got_picture_ptr) {
1982 if (!avctx->refcounted_frames) {
1983 avci->to_free = *picture;
1984 avci->to_free.extended_data = avci->to_free.data;
1985 memset(picture->buf, 0, sizeof(picture->buf));
1988 avctx->frame_number++;
1989 av_frame_set_best_effort_timestamp(picture,
1990 guess_correct_pts(avctx,
1997 /* many decoders assign whole AVFrames, thus overwriting extended_data;
1998 * make sure it's set correctly */
1999 picture->extended_data = picture->data;
2004 #if FF_API_OLD_DECODE_AUDIO
2005 int attribute_align_arg avcodec_decode_audio3(AVCodecContext *avctx, int16_t *samples,
2006 int *frame_size_ptr,
2009 AVFrame frame = { { 0 } };
2010 int ret, got_frame = 0;
2012 if (avctx->get_buffer != avcodec_default_get_buffer) {
2013 av_log(avctx, AV_LOG_ERROR, "Custom get_buffer() for use with"
2014 "avcodec_decode_audio3() detected. Overriding with avcodec_default_get_buffer\n");
2015 av_log(avctx, AV_LOG_ERROR, "Please port your application to "
2016 "avcodec_decode_audio4()\n");
2017 avctx->get_buffer = avcodec_default_get_buffer;
2018 avctx->release_buffer = avcodec_default_release_buffer;
2021 ret = avcodec_decode_audio4(avctx, &frame, &got_frame, avpkt);
2023 if (ret >= 0 && got_frame) {
2025 int planar = av_sample_fmt_is_planar(avctx->sample_fmt);
2026 int data_size = av_samples_get_buffer_size(&plane_size, avctx->channels,
2028 avctx->sample_fmt, 1);
2029 if (*frame_size_ptr < data_size) {
2030 av_log(avctx, AV_LOG_ERROR, "output buffer size is too small for "
2031 "the current frame (%d < %d)\n", *frame_size_ptr, data_size);
2032 return AVERROR(EINVAL);
2035 memcpy(samples, frame.extended_data[0], plane_size);
2037 if (planar && avctx->channels > 1) {
2038 uint8_t *out = ((uint8_t *)samples) + plane_size;
2039 for (ch = 1; ch < avctx->channels; ch++) {
2040 memcpy(out, frame.extended_data[ch], plane_size);
2044 *frame_size_ptr = data_size;
2046 *frame_size_ptr = 0;
2053 int attribute_align_arg avcodec_decode_audio4(AVCodecContext *avctx,
2056 const AVPacket *avpkt)
2058 AVCodecInternal *avci = avctx->internal;
2059 int planar, channels;
2064 if (!avpkt->data && avpkt->size) {
2065 av_log(avctx, AV_LOG_ERROR, "invalid packet: NULL data, size != 0\n");
2066 return AVERROR(EINVAL);
2068 if (avctx->codec->type != AVMEDIA_TYPE_AUDIO) {
2069 av_log(avctx, AV_LOG_ERROR, "Invalid media type for audio\n");
2070 return AVERROR(EINVAL);
2073 avcodec_get_frame_defaults(frame);
2075 if (!avctx->refcounted_frames)
2076 av_frame_unref(&avci->to_free);
2078 if ((avctx->codec->capabilities & CODEC_CAP_DELAY) || avpkt->size || (avctx->active_thread_type & FF_THREAD_FRAME)) {
2081 // copy to ensure we do not change avpkt
2082 AVPacket tmp = *avpkt;
2083 int did_split = av_packet_split_side_data(&tmp);
2084 apply_param_change(avctx, &tmp);
2087 if (HAVE_THREADS && avctx->active_thread_type & FF_THREAD_FRAME)
2088 ret = ff_thread_decode_frame(avctx, frame, got_frame_ptr, &tmp);
2090 ret = avctx->codec->decode(avctx, frame, got_frame_ptr, &tmp);
2091 frame->pkt_dts = avpkt->dts;
2093 if (ret >= 0 && *got_frame_ptr) {
2094 add_metadata_from_side_data(avctx, frame);
2095 avctx->frame_number++;
2096 av_frame_set_best_effort_timestamp(frame,
2097 guess_correct_pts(avctx,
2100 if (frame->format == AV_SAMPLE_FMT_NONE)
2101 frame->format = avctx->sample_fmt;
2102 if (!frame->channel_layout)
2103 frame->channel_layout = avctx->channel_layout;
2104 if (!av_frame_get_channels(frame))
2105 av_frame_set_channels(frame, avctx->channels);
2106 if (!frame->sample_rate)
2107 frame->sample_rate = avctx->sample_rate;
2110 side= av_packet_get_side_data(avctx->pkt, AV_PKT_DATA_SKIP_SAMPLES, &side_size);
2111 if(side && side_size>=10) {
2112 avctx->internal->skip_samples = AV_RL32(side);
2113 av_log(avctx, AV_LOG_DEBUG, "skip %d samples due to side data\n",
2114 avctx->internal->skip_samples);
2116 if (avctx->internal->skip_samples && *got_frame_ptr) {
2117 if(frame->nb_samples <= avctx->internal->skip_samples){
2119 avctx->internal->skip_samples -= frame->nb_samples;
2120 av_log(avctx, AV_LOG_DEBUG, "skip whole frame, skip left: %d\n",
2121 avctx->internal->skip_samples);
2123 av_samples_copy(frame->extended_data, frame->extended_data, 0, avctx->internal->skip_samples,
2124 frame->nb_samples - avctx->internal->skip_samples, avctx->channels, frame->format);
2125 if(avctx->pkt_timebase.num && avctx->sample_rate) {
2126 int64_t diff_ts = av_rescale_q(avctx->internal->skip_samples,
2127 (AVRational){1, avctx->sample_rate},
2128 avctx->pkt_timebase);
2129 if(frame->pkt_pts!=AV_NOPTS_VALUE)
2130 frame->pkt_pts += diff_ts;
2131 if(frame->pkt_dts!=AV_NOPTS_VALUE)
2132 frame->pkt_dts += diff_ts;
2133 if (av_frame_get_pkt_duration(frame) >= diff_ts)
2134 av_frame_set_pkt_duration(frame, av_frame_get_pkt_duration(frame) - diff_ts);
2136 av_log(avctx, AV_LOG_WARNING, "Could not update timestamps for skipped samples.\n");
2138 av_log(avctx, AV_LOG_DEBUG, "skip %d/%d samples\n",
2139 avctx->internal->skip_samples, frame->nb_samples);
2140 frame->nb_samples -= avctx->internal->skip_samples;
2141 avctx->internal->skip_samples = 0;
2147 ff_packet_free_side_data(&tmp);
2152 if (ret >= 0 && *got_frame_ptr) {
2153 if (!avctx->refcounted_frames) {
2154 avci->to_free = *frame;
2155 avci->to_free.extended_data = avci->to_free.data;
2156 memset(frame->buf, 0, sizeof(frame->buf));
2157 frame->extended_buf = NULL;
2158 frame->nb_extended_buf = 0;
2160 } else if (frame->data[0])
2161 av_frame_unref(frame);
2164 /* many decoders assign whole AVFrames, thus overwriting extended_data;
2165 * make sure it's set correctly; assume decoders that actually use
2166 * extended_data are doing it correctly */
2167 if (*got_frame_ptr) {
2168 planar = av_sample_fmt_is_planar(frame->format);
2169 channels = av_frame_get_channels(frame);
2170 if (!(planar && channels > AV_NUM_DATA_POINTERS))
2171 frame->extended_data = frame->data;
2173 frame->extended_data = NULL;
2179 #define UTF8_MAX_BYTES 4 /* 5 and 6 bytes sequences should not be used */
2180 static int recode_subtitle(AVCodecContext *avctx,
2181 AVPacket *outpkt, const AVPacket *inpkt)
2184 iconv_t cd = (iconv_t)-1;
2191 if (avctx->sub_charenc_mode != FF_SUB_CHARENC_MODE_PRE_DECODER)
2195 cd = iconv_open("UTF-8", avctx->sub_charenc);
2196 av_assert0(cd != (iconv_t)-1);
2201 if (inl >= INT_MAX / UTF8_MAX_BYTES - FF_INPUT_BUFFER_PADDING_SIZE) {
2202 av_log(avctx, AV_LOG_ERROR, "Subtitles packet is too big for recoding\n");
2203 ret = AVERROR(ENOMEM);
2207 ret = av_new_packet(&tmp, inl * UTF8_MAX_BYTES);
2210 outpkt->buf = tmp.buf;
2211 outpkt->data = tmp.data;
2212 outpkt->size = tmp.size;
2213 outb = outpkt->data;
2214 outl = outpkt->size;
2216 if (iconv(cd, &inb, &inl, &outb, &outl) == (size_t)-1 ||
2217 iconv(cd, NULL, NULL, &outb, &outl) == (size_t)-1 ||
2218 outl >= outpkt->size || inl != 0) {
2219 av_log(avctx, AV_LOG_ERROR, "Unable to recode subtitle event \"%s\" "
2220 "from %s to UTF-8\n", inpkt->data, avctx->sub_charenc);
2221 av_free_packet(&tmp);
2222 ret = AVERROR(errno);
2225 outpkt->size -= outl;
2226 memset(outpkt->data + outpkt->size, 0, outl);
2229 if (cd != (iconv_t)-1)
2233 av_assert0(!"requesting subtitles recoding without iconv");
2237 static int utf8_check(const uint8_t *str)
2239 const uint8_t *byte;
2240 uint32_t codepoint, min;
2244 GET_UTF8(codepoint, *(byte++), return 0;);
2245 min = byte - str == 1 ? 0 : byte - str == 2 ? 0x80 :
2246 1 << (5 * (byte - str) - 4);
2247 if (codepoint < min || codepoint >= 0x110000 ||
2248 codepoint == 0xFFFE /* BOM */ ||
2249 codepoint >= 0xD800 && codepoint <= 0xDFFF /* surrogates */)
2256 int avcodec_decode_subtitle2(AVCodecContext *avctx, AVSubtitle *sub,
2262 if (avctx->codec->type != AVMEDIA_TYPE_SUBTITLE) {
2263 av_log(avctx, AV_LOG_ERROR, "Invalid media type for subtitles\n");
2264 return AVERROR(EINVAL);
2268 avcodec_get_subtitle_defaults(sub);
2271 AVPacket pkt_recoded;
2272 AVPacket tmp = *avpkt;
2273 int did_split = av_packet_split_side_data(&tmp);
2274 //apply_param_change(avctx, &tmp);
2277 ret = recode_subtitle(avctx, &pkt_recoded, &tmp);
2281 avctx->pkt = &pkt_recoded;
2283 if (avctx->pkt_timebase.den && avpkt->pts != AV_NOPTS_VALUE)
2284 sub->pts = av_rescale_q(avpkt->pts,
2285 avctx->pkt_timebase, AV_TIME_BASE_Q);
2286 ret = avctx->codec->decode(avctx, sub, got_sub_ptr, &pkt_recoded);
2287 av_assert1((ret >= 0) >= !!*got_sub_ptr &&
2288 !!*got_sub_ptr >= !!sub->num_rects);
2290 if (sub->num_rects && !sub->end_display_time && avpkt->duration &&
2291 avctx->pkt_timebase.num) {
2292 AVRational ms = { 1, 1000 };
2293 sub->end_display_time = av_rescale_q(avpkt->duration,
2294 avctx->pkt_timebase, ms);
2297 for (i = 0; i < sub->num_rects; i++) {
2298 if (sub->rects[i]->ass && !utf8_check(sub->rects[i]->ass)) {
2299 av_log(avctx, AV_LOG_ERROR,
2300 "Invalid UTF-8 in decoded subtitles text; "
2301 "maybe missing -sub_charenc option\n");
2302 avsubtitle_free(sub);
2303 return AVERROR_INVALIDDATA;
2307 if (tmp.data != pkt_recoded.data) { // did we recode?
2308 /* prevent from destroying side data from original packet */
2309 pkt_recoded.side_data = NULL;
2310 pkt_recoded.side_data_elems = 0;
2312 av_free_packet(&pkt_recoded);
2314 sub->format = !(avctx->codec_descriptor->props & AV_CODEC_PROP_BITMAP_SUB);
2319 ff_packet_free_side_data(&tmp);
2325 avctx->frame_number++;
2331 void avsubtitle_free(AVSubtitle *sub)
2335 for (i = 0; i < sub->num_rects; i++) {
2336 av_freep(&sub->rects[i]->pict.data[0]);
2337 av_freep(&sub->rects[i]->pict.data[1]);
2338 av_freep(&sub->rects[i]->pict.data[2]);
2339 av_freep(&sub->rects[i]->pict.data[3]);
2340 av_freep(&sub->rects[i]->text);
2341 av_freep(&sub->rects[i]->ass);
2342 av_freep(&sub->rects[i]);
2345 av_freep(&sub->rects);
2347 memset(sub, 0, sizeof(AVSubtitle));
2350 av_cold int ff_codec_close_recursive(AVCodecContext *avctx)
2354 ff_unlock_avcodec();
2356 ret = avcodec_close(avctx);
2358 ff_lock_avcodec(NULL);
2362 av_cold int avcodec_close(AVCodecContext *avctx)
2364 int ret = ff_lock_avcodec(avctx);
2368 if (avcodec_is_open(avctx)) {
2369 FramePool *pool = avctx->internal->pool;
2371 if (CONFIG_FRAME_THREAD_ENCODER &&
2372 avctx->internal->frame_thread_encoder && avctx->thread_count > 1) {
2373 ff_unlock_avcodec();
2374 ff_frame_thread_encoder_free(avctx);
2375 ff_lock_avcodec(avctx);
2377 if (HAVE_THREADS && avctx->thread_opaque)
2378 ff_thread_free(avctx);
2379 if (avctx->codec && avctx->codec->close)
2380 avctx->codec->close(avctx);
2381 avctx->coded_frame = NULL;
2382 avctx->internal->byte_buffer_size = 0;
2383 av_freep(&avctx->internal->byte_buffer);
2384 if (!avctx->refcounted_frames)
2385 av_frame_unref(&avctx->internal->to_free);
2386 for (i = 0; i < FF_ARRAY_ELEMS(pool->pools); i++)
2387 av_buffer_pool_uninit(&pool->pools[i]);
2388 av_freep(&avctx->internal->pool);
2389 av_freep(&avctx->internal);
2392 if (avctx->priv_data && avctx->codec && avctx->codec->priv_class)
2393 av_opt_free(avctx->priv_data);
2395 av_freep(&avctx->priv_data);
2396 if (av_codec_is_encoder(avctx->codec))
2397 av_freep(&avctx->extradata);
2398 avctx->codec = NULL;
2399 avctx->active_thread_type = 0;
2401 ff_unlock_avcodec();
2405 static enum AVCodecID remap_deprecated_codec_id(enum AVCodecID id)
2408 //This is for future deprecatec codec ids, its empty since
2409 //last major bump but will fill up again over time, please don't remove it
2410 // case AV_CODEC_ID_UTVIDEO_DEPRECATED: return AV_CODEC_ID_UTVIDEO;
2411 case AV_CODEC_ID_OPUS_DEPRECATED: return AV_CODEC_ID_OPUS;
2412 case AV_CODEC_ID_TAK_DEPRECATED : return AV_CODEC_ID_TAK;
2413 case AV_CODEC_ID_ESCAPE130_DEPRECATED : return AV_CODEC_ID_ESCAPE130;
2414 case AV_CODEC_ID_G2M_DEPRECATED : return AV_CODEC_ID_G2M;
2415 default : return id;
2419 static AVCodec *find_encdec(enum AVCodecID id, int encoder)
2421 AVCodec *p, *experimental = NULL;
2423 id= remap_deprecated_codec_id(id);
2425 if ((encoder ? av_codec_is_encoder(p) : av_codec_is_decoder(p)) &&
2427 if (p->capabilities & CODEC_CAP_EXPERIMENTAL && !experimental) {
2434 return experimental;
2437 AVCodec *avcodec_find_encoder(enum AVCodecID id)
2439 return find_encdec(id, 1);
2442 AVCodec *avcodec_find_encoder_by_name(const char *name)
2449 if (av_codec_is_encoder(p) && strcmp(name, p->name) == 0)
2456 AVCodec *avcodec_find_decoder(enum AVCodecID id)
2458 return find_encdec(id, 0);
2461 AVCodec *avcodec_find_decoder_by_name(const char *name)
2468 if (av_codec_is_decoder(p) && strcmp(name, p->name) == 0)
2475 const char *avcodec_get_name(enum AVCodecID id)
2477 const AVCodecDescriptor *cd;
2480 if (id == AV_CODEC_ID_NONE)
2482 cd = avcodec_descriptor_get(id);
2485 av_log(NULL, AV_LOG_WARNING, "Codec 0x%x is not in the full list.\n", id);
2486 codec = avcodec_find_decoder(id);
2489 codec = avcodec_find_encoder(id);
2492 return "unknown_codec";
2495 size_t av_get_codec_tag_string(char *buf, size_t buf_size, unsigned int codec_tag)
2497 int i, len, ret = 0;
2499 #define TAG_PRINT(x) \
2500 (((x) >= '0' && (x) <= '9') || \
2501 ((x) >= 'a' && (x) <= 'z') || ((x) >= 'A' && (x) <= 'Z') || \
2502 ((x) == '.' || (x) == ' ' || (x) == '-' || (x) == '_'))
2504 for (i = 0; i < 4; i++) {
2505 len = snprintf(buf, buf_size,
2506 TAG_PRINT(codec_tag & 0xFF) ? "%c" : "[%d]", codec_tag & 0xFF);
2508 buf_size = buf_size > len ? buf_size - len : 0;
2515 void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode)
2517 const char *codec_type;
2518 const char *codec_name;
2519 const char *profile = NULL;
2522 AVRational display_aspect_ratio;
2524 if (!buf || buf_size <= 0)
2526 codec_type = av_get_media_type_string(enc->codec_type);
2527 codec_name = avcodec_get_name(enc->codec_id);
2528 if (enc->profile != FF_PROFILE_UNKNOWN) {
2532 p = encode ? avcodec_find_encoder(enc->codec_id) :
2533 avcodec_find_decoder(enc->codec_id);
2535 profile = av_get_profile_name(p, enc->profile);
2538 snprintf(buf, buf_size, "%s: %s", codec_type ? codec_type : "unknown",
2540 buf[0] ^= 'a' ^ 'A'; /* first letter in uppercase */
2542 if (enc->codec && strcmp(enc->codec->name, codec_name))
2543 snprintf(buf + strlen(buf), buf_size - strlen(buf), " (%s)", enc->codec->name);
2546 snprintf(buf + strlen(buf), buf_size - strlen(buf), " (%s)", profile);
2547 if (enc->codec_tag) {
2549 av_get_codec_tag_string(tag_buf, sizeof(tag_buf), enc->codec_tag);
2550 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2551 " (%s / 0x%04X)", tag_buf, enc->codec_tag);
2554 switch (enc->codec_type) {
2555 case AVMEDIA_TYPE_VIDEO:
2556 if (enc->pix_fmt != AV_PIX_FMT_NONE) {
2557 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2559 av_get_pix_fmt_name(enc->pix_fmt));
2560 if (enc->bits_per_raw_sample &&
2561 enc->bits_per_raw_sample <= av_pix_fmt_desc_get(enc->pix_fmt)->comp[0].depth_minus1)
2562 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2563 " (%d bpc)", enc->bits_per_raw_sample);
2566 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2568 enc->width, enc->height);
2569 if (enc->sample_aspect_ratio.num) {
2570 av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,
2571 enc->width * enc->sample_aspect_ratio.num,
2572 enc->height * enc->sample_aspect_ratio.den,
2574 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2575 " [SAR %d:%d DAR %d:%d]",
2576 enc->sample_aspect_ratio.num, enc->sample_aspect_ratio.den,
2577 display_aspect_ratio.num, display_aspect_ratio.den);
2579 if (av_log_get_level() >= AV_LOG_DEBUG) {
2580 int g = av_gcd(enc->time_base.num, enc->time_base.den);
2581 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2583 enc->time_base.num / g, enc->time_base.den / g);
2587 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2588 ", q=%d-%d", enc->qmin, enc->qmax);
2591 case AVMEDIA_TYPE_AUDIO:
2592 if (enc->sample_rate) {
2593 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2594 ", %d Hz", enc->sample_rate);
2596 av_strlcat(buf, ", ", buf_size);
2597 av_get_channel_layout_string(buf + strlen(buf), buf_size - strlen(buf), enc->channels, enc->channel_layout);
2598 if (enc->sample_fmt != AV_SAMPLE_FMT_NONE) {
2599 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2600 ", %s", av_get_sample_fmt_name(enc->sample_fmt));
2603 case AVMEDIA_TYPE_DATA:
2604 if (av_log_get_level() >= AV_LOG_DEBUG) {
2605 int g = av_gcd(enc->time_base.num, enc->time_base.den);
2607 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2609 enc->time_base.num / g, enc->time_base.den / g);
2616 if (enc->flags & CODEC_FLAG_PASS1)
2617 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2619 if (enc->flags & CODEC_FLAG_PASS2)
2620 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2623 bitrate = get_bit_rate(enc);
2625 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2626 ", %d kb/s", bitrate / 1000);
2630 const char *av_get_profile_name(const AVCodec *codec, int profile)
2633 if (profile == FF_PROFILE_UNKNOWN || !codec->profiles)
2636 for (p = codec->profiles; p->profile != FF_PROFILE_UNKNOWN; p++)
2637 if (p->profile == profile)
2643 unsigned avcodec_version(void)
2645 // av_assert0(AV_CODEC_ID_V410==164);
2646 av_assert0(AV_CODEC_ID_PCM_S8_PLANAR==65563);
2647 av_assert0(AV_CODEC_ID_ADPCM_G722==69660);
2648 // av_assert0(AV_CODEC_ID_BMV_AUDIO==86071);
2649 av_assert0(AV_CODEC_ID_SRT==94216);
2650 av_assert0(LIBAVCODEC_VERSION_MICRO >= 100);
2652 av_assert0(CODEC_ID_CLLC == AV_CODEC_ID_CLLC);
2653 av_assert0(CODEC_ID_PCM_S8_PLANAR == AV_CODEC_ID_PCM_S8_PLANAR);
2654 av_assert0(CODEC_ID_ADPCM_IMA_APC == AV_CODEC_ID_ADPCM_IMA_APC);
2655 av_assert0(CODEC_ID_ILBC == AV_CODEC_ID_ILBC);
2656 av_assert0(CODEC_ID_SRT == AV_CODEC_ID_SRT);
2657 return LIBAVCODEC_VERSION_INT;
2660 const char *avcodec_configuration(void)
2662 return FFMPEG_CONFIGURATION;
2665 const char *avcodec_license(void)
2667 #define LICENSE_PREFIX "libavcodec license: "
2668 return LICENSE_PREFIX FFMPEG_LICENSE + sizeof(LICENSE_PREFIX) - 1;
2671 void avcodec_flush_buffers(AVCodecContext *avctx)
2673 if (HAVE_THREADS && avctx->active_thread_type & FF_THREAD_FRAME)
2674 ff_thread_flush(avctx);
2675 else if (avctx->codec->flush)
2676 avctx->codec->flush(avctx);
2678 avctx->pts_correction_last_pts =
2679 avctx->pts_correction_last_dts = INT64_MIN;
2682 int av_get_exact_bits_per_sample(enum AVCodecID codec_id)
2685 case AV_CODEC_ID_8SVX_EXP:
2686 case AV_CODEC_ID_8SVX_FIB:
2687 case AV_CODEC_ID_ADPCM_CT:
2688 case AV_CODEC_ID_ADPCM_IMA_APC:
2689 case AV_CODEC_ID_ADPCM_IMA_EA_SEAD:
2690 case AV_CODEC_ID_ADPCM_IMA_OKI:
2691 case AV_CODEC_ID_ADPCM_IMA_WS:
2692 case AV_CODEC_ID_ADPCM_G722:
2693 case AV_CODEC_ID_ADPCM_YAMAHA:
2695 case AV_CODEC_ID_PCM_ALAW:
2696 case AV_CODEC_ID_PCM_MULAW:
2697 case AV_CODEC_ID_PCM_S8:
2698 case AV_CODEC_ID_PCM_S8_PLANAR:
2699 case AV_CODEC_ID_PCM_U8:
2700 case AV_CODEC_ID_PCM_ZORK:
2702 case AV_CODEC_ID_PCM_S16BE:
2703 case AV_CODEC_ID_PCM_S16BE_PLANAR:
2704 case AV_CODEC_ID_PCM_S16LE:
2705 case AV_CODEC_ID_PCM_S16LE_PLANAR:
2706 case AV_CODEC_ID_PCM_U16BE:
2707 case AV_CODEC_ID_PCM_U16LE:
2709 case AV_CODEC_ID_PCM_S24DAUD:
2710 case AV_CODEC_ID_PCM_S24BE:
2711 case AV_CODEC_ID_PCM_S24LE:
2712 case AV_CODEC_ID_PCM_S24LE_PLANAR:
2713 case AV_CODEC_ID_PCM_U24BE:
2714 case AV_CODEC_ID_PCM_U24LE:
2716 case AV_CODEC_ID_PCM_S32BE:
2717 case AV_CODEC_ID_PCM_S32LE:
2718 case AV_CODEC_ID_PCM_S32LE_PLANAR:
2719 case AV_CODEC_ID_PCM_U32BE:
2720 case AV_CODEC_ID_PCM_U32LE:
2721 case AV_CODEC_ID_PCM_F32BE:
2722 case AV_CODEC_ID_PCM_F32LE:
2724 case AV_CODEC_ID_PCM_F64BE:
2725 case AV_CODEC_ID_PCM_F64LE:
2732 enum AVCodecID av_get_pcm_codec(enum AVSampleFormat fmt, int be)
2734 static const enum AVCodecID map[AV_SAMPLE_FMT_NB][2] = {
2735 [AV_SAMPLE_FMT_U8 ] = { AV_CODEC_ID_PCM_U8, AV_CODEC_ID_PCM_U8 },
2736 [AV_SAMPLE_FMT_S16 ] = { AV_CODEC_ID_PCM_S16LE, AV_CODEC_ID_PCM_S16BE },
2737 [AV_SAMPLE_FMT_S32 ] = { AV_CODEC_ID_PCM_S32LE, AV_CODEC_ID_PCM_S32BE },
2738 [AV_SAMPLE_FMT_FLT ] = { AV_CODEC_ID_PCM_F32LE, AV_CODEC_ID_PCM_F32BE },
2739 [AV_SAMPLE_FMT_DBL ] = { AV_CODEC_ID_PCM_F64LE, AV_CODEC_ID_PCM_F64BE },
2740 [AV_SAMPLE_FMT_U8P ] = { AV_CODEC_ID_PCM_U8, AV_CODEC_ID_PCM_U8 },
2741 [AV_SAMPLE_FMT_S16P] = { AV_CODEC_ID_PCM_S16LE, AV_CODEC_ID_PCM_S16BE },
2742 [AV_SAMPLE_FMT_S32P] = { AV_CODEC_ID_PCM_S32LE, AV_CODEC_ID_PCM_S32BE },
2743 [AV_SAMPLE_FMT_FLTP] = { AV_CODEC_ID_PCM_F32LE, AV_CODEC_ID_PCM_F32BE },
2744 [AV_SAMPLE_FMT_DBLP] = { AV_CODEC_ID_PCM_F64LE, AV_CODEC_ID_PCM_F64BE },
2746 if (fmt < 0 || fmt >= AV_SAMPLE_FMT_NB)
2747 return AV_CODEC_ID_NONE;
2748 if (be < 0 || be > 1)
2750 return map[fmt][be];
2753 int av_get_bits_per_sample(enum AVCodecID codec_id)
2756 case AV_CODEC_ID_ADPCM_SBPRO_2:
2758 case AV_CODEC_ID_ADPCM_SBPRO_3:
2760 case AV_CODEC_ID_ADPCM_SBPRO_4:
2761 case AV_CODEC_ID_ADPCM_IMA_WAV:
2762 case AV_CODEC_ID_ADPCM_IMA_QT:
2763 case AV_CODEC_ID_ADPCM_SWF:
2764 case AV_CODEC_ID_ADPCM_MS:
2767 return av_get_exact_bits_per_sample(codec_id);
2771 int av_get_audio_frame_duration(AVCodecContext *avctx, int frame_bytes)
2773 int id, sr, ch, ba, tag, bps;
2775 id = avctx->codec_id;
2776 sr = avctx->sample_rate;
2777 ch = avctx->channels;
2778 ba = avctx->block_align;
2779 tag = avctx->codec_tag;
2780 bps = av_get_exact_bits_per_sample(avctx->codec_id);
2782 /* codecs with an exact constant bits per sample */
2783 if (bps > 0 && ch > 0 && frame_bytes > 0 && ch < 32768 && bps < 32768)
2784 return (frame_bytes * 8LL) / (bps * ch);
2785 bps = avctx->bits_per_coded_sample;
2787 /* codecs with a fixed packet duration */
2789 case AV_CODEC_ID_ADPCM_ADX: return 32;
2790 case AV_CODEC_ID_ADPCM_IMA_QT: return 64;
2791 case AV_CODEC_ID_ADPCM_EA_XAS: return 128;
2792 case AV_CODEC_ID_AMR_NB:
2793 case AV_CODEC_ID_EVRC:
2794 case AV_CODEC_ID_GSM:
2795 case AV_CODEC_ID_QCELP:
2796 case AV_CODEC_ID_RA_288: return 160;
2797 case AV_CODEC_ID_AMR_WB:
2798 case AV_CODEC_ID_GSM_MS: return 320;
2799 case AV_CODEC_ID_MP1: return 384;
2800 case AV_CODEC_ID_ATRAC1: return 512;
2801 case AV_CODEC_ID_ATRAC3: return 1024;
2802 case AV_CODEC_ID_MP2:
2803 case AV_CODEC_ID_MUSEPACK7: return 1152;
2804 case AV_CODEC_ID_AC3: return 1536;
2808 /* calc from sample rate */
2809 if (id == AV_CODEC_ID_TTA)
2810 return 256 * sr / 245;
2813 /* calc from sample rate and channels */
2814 if (id == AV_CODEC_ID_BINKAUDIO_DCT)
2815 return (480 << (sr / 22050)) / ch;
2820 /* calc from block_align */
2821 if (id == AV_CODEC_ID_SIPR) {
2823 case 20: return 160;
2824 case 19: return 144;
2825 case 29: return 288;
2826 case 37: return 480;
2828 } else if (id == AV_CODEC_ID_ILBC) {
2830 case 38: return 160;
2831 case 50: return 240;
2836 if (frame_bytes > 0) {
2837 /* calc from frame_bytes only */
2838 if (id == AV_CODEC_ID_TRUESPEECH)
2839 return 240 * (frame_bytes / 32);
2840 if (id == AV_CODEC_ID_NELLYMOSER)
2841 return 256 * (frame_bytes / 64);
2842 if (id == AV_CODEC_ID_RA_144)
2843 return 160 * (frame_bytes / 20);
2844 if (id == AV_CODEC_ID_G723_1)
2845 return 240 * (frame_bytes / 24);
2848 /* calc from frame_bytes and bits_per_coded_sample */
2849 if (id == AV_CODEC_ID_ADPCM_G726)
2850 return frame_bytes * 8 / bps;
2854 /* calc from frame_bytes and channels */
2856 case AV_CODEC_ID_ADPCM_AFC:
2857 return frame_bytes / (9 * ch) * 16;
2858 case AV_CODEC_ID_ADPCM_DTK:
2859 return frame_bytes / (16 * ch) * 28;
2860 case AV_CODEC_ID_ADPCM_4XM:
2861 case AV_CODEC_ID_ADPCM_IMA_ISS:
2862 return (frame_bytes - 4 * ch) * 2 / ch;
2863 case AV_CODEC_ID_ADPCM_IMA_SMJPEG:
2864 return (frame_bytes - 4) * 2 / ch;
2865 case AV_CODEC_ID_ADPCM_IMA_AMV:
2866 return (frame_bytes - 8) * 2 / ch;
2867 case AV_CODEC_ID_ADPCM_XA:
2868 return (frame_bytes / 128) * 224 / ch;
2869 case AV_CODEC_ID_INTERPLAY_DPCM:
2870 return (frame_bytes - 6 - ch) / ch;
2871 case AV_CODEC_ID_ROQ_DPCM:
2872 return (frame_bytes - 8) / ch;
2873 case AV_CODEC_ID_XAN_DPCM:
2874 return (frame_bytes - 2 * ch) / ch;
2875 case AV_CODEC_ID_MACE3:
2876 return 3 * frame_bytes / ch;
2877 case AV_CODEC_ID_MACE6:
2878 return 6 * frame_bytes / ch;
2879 case AV_CODEC_ID_PCM_LXF:
2880 return 2 * (frame_bytes / (5 * ch));
2881 case AV_CODEC_ID_IAC:
2882 case AV_CODEC_ID_IMC:
2883 return 4 * frame_bytes / ch;
2887 /* calc from frame_bytes, channels, and codec_tag */
2888 if (id == AV_CODEC_ID_SOL_DPCM) {
2890 return frame_bytes / ch;
2892 return frame_bytes * 2 / ch;
2897 /* calc from frame_bytes, channels, and block_align */
2898 int blocks = frame_bytes / ba;
2899 switch (avctx->codec_id) {
2900 case AV_CODEC_ID_ADPCM_IMA_WAV:
2901 return blocks * (1 + (ba - 4 * ch) / (4 * ch) * 8);
2902 case AV_CODEC_ID_ADPCM_IMA_DK3:
2903 return blocks * (((ba - 16) * 2 / 3 * 4) / ch);
2904 case AV_CODEC_ID_ADPCM_IMA_DK4:
2905 return blocks * (1 + (ba - 4 * ch) * 2 / ch);
2906 case AV_CODEC_ID_ADPCM_IMA_RAD:
2907 return blocks * ((ba - 4 * ch) * 2 / ch);
2908 case AV_CODEC_ID_ADPCM_MS:
2909 return blocks * (2 + (ba - 7 * ch) * 2 / ch);
2914 /* calc from frame_bytes, channels, and bits_per_coded_sample */
2915 switch (avctx->codec_id) {
2916 case AV_CODEC_ID_PCM_DVD:
2919 return 2 * (frame_bytes / ((bps * 2 / 8) * ch));
2920 case AV_CODEC_ID_PCM_BLURAY:
2923 return frame_bytes / ((FFALIGN(ch, 2) * bps) / 8);
2924 case AV_CODEC_ID_S302M:
2925 return 2 * (frame_bytes / ((bps + 4) / 4)) / ch;
2935 int ff_thread_init(AVCodecContext *s)
2942 unsigned int av_xiphlacing(unsigned char *s, unsigned int v)
2956 int ff_match_2uint16(const uint16_t(*tab)[2], int size, int a, int b)
2959 for (i = 0; i < size && !(tab[i][0] == a && tab[i][1] == b); i++) ;
2963 #if FF_API_MISSING_SAMPLE
2964 void av_log_missing_feature(void *avc, const char *feature, int want_sample)
2966 av_log(avc, AV_LOG_WARNING, "%s is not implemented. Update your FFmpeg "
2967 "version to the newest one from Git. If the problem still "
2968 "occurs, it means that your file has a feature which has not "
2969 "been implemented.\n", feature);
2971 av_log_ask_for_sample(avc, NULL);
2974 void av_log_ask_for_sample(void *avc, const char *msg, ...)
2976 va_list argument_list;
2978 va_start(argument_list, msg);
2981 av_vlog(avc, AV_LOG_WARNING, msg, argument_list);
2982 av_log(avc, AV_LOG_WARNING, "If you want to help, upload a sample "
2983 "of this file to ftp://upload.ffmpeg.org/MPlayer/incoming/ "
2984 "and contact the ffmpeg-devel mailing list.\n");
2986 va_end(argument_list);
2988 #endif /* FF_API_MISSING_SAMPLE */
2990 static AVHWAccel *first_hwaccel = NULL;
2992 void av_register_hwaccel(AVHWAccel *hwaccel)
2994 AVHWAccel **p = &first_hwaccel;
2998 hwaccel->next = NULL;
3001 AVHWAccel *av_hwaccel_next(AVHWAccel *hwaccel)
3003 return hwaccel ? hwaccel->next : first_hwaccel;
3006 AVHWAccel *ff_find_hwaccel(enum AVCodecID codec_id, enum AVPixelFormat pix_fmt)
3008 AVHWAccel *hwaccel = NULL;
3010 while ((hwaccel = av_hwaccel_next(hwaccel)))
3011 if (hwaccel->id == codec_id
3012 && hwaccel->pix_fmt == pix_fmt)
3017 int av_lockmgr_register(int (*cb)(void **mutex, enum AVLockOp op))
3020 if (lockmgr_cb(&codec_mutex, AV_LOCK_DESTROY))
3022 if (lockmgr_cb(&avformat_mutex, AV_LOCK_DESTROY))
3029 if (lockmgr_cb(&codec_mutex, AV_LOCK_CREATE))
3031 if (lockmgr_cb(&avformat_mutex, AV_LOCK_CREATE))
3037 int ff_lock_avcodec(AVCodecContext *log_ctx)
3040 if ((*lockmgr_cb)(&codec_mutex, AV_LOCK_OBTAIN))
3043 entangled_thread_counter++;
3044 if (entangled_thread_counter != 1) {
3045 av_log(log_ctx, AV_LOG_ERROR, "Insufficient thread locking around avcodec_open/close()\n");
3046 ff_avcodec_locked = 1;
3047 ff_unlock_avcodec();
3048 return AVERROR(EINVAL);
3050 av_assert0(!ff_avcodec_locked);
3051 ff_avcodec_locked = 1;
3055 int ff_unlock_avcodec(void)
3057 av_assert0(ff_avcodec_locked);
3058 ff_avcodec_locked = 0;
3059 entangled_thread_counter--;
3061 if ((*lockmgr_cb)(&codec_mutex, AV_LOCK_RELEASE))
3067 int avpriv_lock_avformat(void)
3070 if ((*lockmgr_cb)(&avformat_mutex, AV_LOCK_OBTAIN))
3076 int avpriv_unlock_avformat(void)
3079 if ((*lockmgr_cb)(&avformat_mutex, AV_LOCK_RELEASE))
3085 unsigned int avpriv_toupper4(unsigned int x)
3087 return av_toupper(x & 0xFF) +
3088 (av_toupper((x >> 8) & 0xFF) << 8) +
3089 (av_toupper((x >> 16) & 0xFF) << 16) +
3090 (av_toupper((x >> 24) & 0xFF) << 24);
3093 int ff_thread_ref_frame(ThreadFrame *dst, ThreadFrame *src)
3097 dst->owner = src->owner;
3099 ret = av_frame_ref(dst->f, src->f);
3103 if (src->progress &&
3104 !(dst->progress = av_buffer_ref(src->progress))) {
3105 ff_thread_release_buffer(dst->owner, dst);
3106 return AVERROR(ENOMEM);
3114 enum AVPixelFormat ff_thread_get_format(AVCodecContext *avctx, const enum AVPixelFormat *fmt)
3116 return avctx->get_format(avctx, fmt);
3119 int ff_thread_get_buffer(AVCodecContext *avctx, ThreadFrame *f, int flags)
3122 return ff_get_buffer(avctx, f->f, flags);
3125 void ff_thread_release_buffer(AVCodecContext *avctx, ThreadFrame *f)
3127 av_frame_unref(f->f);
3130 void ff_thread_finish_setup(AVCodecContext *avctx)
3134 void ff_thread_report_progress(ThreadFrame *f, int progress, int field)
3138 void ff_thread_await_progress(ThreadFrame *f, int progress, int field)
3142 int ff_thread_can_start_frame(AVCodecContext *avctx)
3149 enum AVMediaType avcodec_get_type(enum AVCodecID codec_id)
3151 AVCodec *c= avcodec_find_decoder(codec_id);
3153 c= avcodec_find_encoder(codec_id);
3157 if (codec_id <= AV_CODEC_ID_NONE)
3158 return AVMEDIA_TYPE_UNKNOWN;
3159 else if (codec_id < AV_CODEC_ID_FIRST_AUDIO)
3160 return AVMEDIA_TYPE_VIDEO;
3161 else if (codec_id < AV_CODEC_ID_FIRST_SUBTITLE)
3162 return AVMEDIA_TYPE_AUDIO;
3163 else if (codec_id < AV_CODEC_ID_FIRST_UNKNOWN)
3164 return AVMEDIA_TYPE_SUBTITLE;
3166 return AVMEDIA_TYPE_UNKNOWN;
3169 int avcodec_is_open(AVCodecContext *s)
3171 return !!s->internal;
3174 int avpriv_bprint_to_extradata(AVCodecContext *avctx, struct AVBPrint *buf)
3179 ret = av_bprint_finalize(buf, &str);
3182 avctx->extradata = str;
3183 /* Note: the string is NUL terminated (so extradata can be read as a
3184 * string), but the ending character is not accounted in the size (in
3185 * binary formats you are likely not supposed to mux that character). When
3186 * extradata is copied, it is also padded with FF_INPUT_BUFFER_PADDING_SIZE
3188 avctx->extradata_size = buf->len;
3192 const uint8_t *avpriv_find_start_code(const uint8_t *av_restrict p,
3194 uint32_t *av_restrict state)
3202 for (i = 0; i < 3; i++) {
3203 uint32_t tmp = *state << 8;
3204 *state = tmp + *(p++);
3205 if (tmp == 0x100 || p == end)
3210 if (p[-1] > 1 ) p += 3;
3211 else if (p[-2] ) p += 2;
3212 else if (p[-3]|(p[-1]-1)) p++;
3219 p = FFMIN(p, end) - 4;
3220 *state = AV_RB32(p);