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9d6785d426
FFmpeg/libavcodec/utils.c
Anton Khirnov 9d6785d426 lavc: do not implicitly share the frame pool between threads 
Currently the frame pool used by the default get_buffer2()
implementation is a single struct, allocated when opening the decoder.
A pointer to it is simply copied to each frame thread and we assume that
no thread attempts to modify it at an unexpected time. This is rather
fragile and potentially dangerous.

With this commit, the frame pool is made refcounted, with the reference
being propagated across threads along with other context variables. The
frame pool is now also immutable - when the stream parameters change we
drop the old reference and create a new one.
2020-04-10 15:47:30 +02:00

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/*
* utils for libavcodec
* Copyright (c) 2001 Fabrice Bellard
* Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
* @file
* utils.
*/
#include "config.h"
#include "libavutil/attributes.h"
#include "libavutil/avassert.h"
#include "libavutil/avstring.h"
#include "libavutil/bprint.h"
#include "libavutil/channel_layout.h"
#include "libavutil/crc.h"
#include "libavutil/frame.h"
#include "libavutil/hwcontext.h"
#include "libavutil/internal.h"
#include "libavutil/mathematics.h"
#include "libavutil/mem_internal.h"
#include "libavutil/pixdesc.h"
#include "libavutil/imgutils.h"
#include "libavutil/samplefmt.h"
#include "libavutil/dict.h"
#include "libavutil/thread.h"
#include "avcodec.h"
#include "decode.h"
#include "hwaccel.h"
#include "libavutil/opt.h"
#include "mpegvideo.h"
#include "thread.h"
#include "frame_thread_encoder.h"
#include "internal.h"
#include "raw.h"
#include "bytestream.h"
#include "version.h"
#include <stdlib.h>
#include <stdarg.h>
#include <stdatomic.h>
#include <limits.h>
#include <float.h>
#if CONFIG_ICONV
# include <iconv.h>
#endif
#include "libavutil/ffversion.h"
const char av_codec_ffversion[] = "FFmpeg version " FFMPEG_VERSION;
static AVMutex codec_mutex = AV_MUTEX_INITIALIZER;
void av_fast_padded_malloc(void *ptr, unsigned int *size, size_t min_size)
{
uint8_t **p = ptr;
if (min_size > SIZE_MAX - AV_INPUT_BUFFER_PADDING_SIZE) {
av_freep(p);
*size = 0;
return;
}
if (!ff_fast_malloc(p, size, min_size + AV_INPUT_BUFFER_PADDING_SIZE, 1))
memset(*p + min_size, 0, AV_INPUT_BUFFER_PADDING_SIZE);
}
void av_fast_padded_mallocz(void *ptr, unsigned int *size, size_t min_size)
{
uint8_t **p = ptr;
if (min_size > SIZE_MAX - AV_INPUT_BUFFER_PADDING_SIZE) {
av_freep(p);
*size = 0;
return;
}
if (!ff_fast_malloc(p, size, min_size + AV_INPUT_BUFFER_PADDING_SIZE, 1))
memset(*p, 0, min_size + AV_INPUT_BUFFER_PADDING_SIZE);
}
int av_codec_is_encoder(const AVCodec *codec)
{
return codec && (codec->encode_sub || codec->encode2 ||codec->send_frame);
}
int av_codec_is_decoder(const AVCodec *codec)
{
return codec && (codec->decode || codec->receive_frame);
}
int ff_set_dimensions(AVCodecContext *s, int width, int height)
{
int ret = av_image_check_size2(width, height, s->max_pixels, AV_PIX_FMT_NONE, 0, s);
if (ret < 0)
width = height = 0;
s->coded_width = width;
s->coded_height = height;
s->width = AV_CEIL_RSHIFT(width, s->lowres);
s->height = AV_CEIL_RSHIFT(height, s->lowres);
return ret;
}
int ff_set_sar(AVCodecContext *avctx, AVRational sar)
{
int ret = av_image_check_sar(avctx->width, avctx->height, sar);
if (ret < 0) {
av_log(avctx, AV_LOG_WARNING, "ignoring invalid SAR: %d/%d\n",
sar.num, sar.den);
avctx->sample_aspect_ratio = (AVRational){ 0, 1 };
return ret;
} else {
avctx->sample_aspect_ratio = sar;
}
return 0;
}
int ff_side_data_update_matrix_encoding(AVFrame *frame,
enum AVMatrixEncoding matrix_encoding)
{
AVFrameSideData *side_data;
enum AVMatrixEncoding *data;
side_data = av_frame_get_side_data(frame, AV_FRAME_DATA_MATRIXENCODING);
if (!side_data)
side_data = av_frame_new_side_data(frame, AV_FRAME_DATA_MATRIXENCODING,
sizeof(enum AVMatrixEncoding));
if (!side_data)
return AVERROR(ENOMEM);
data = (enum AVMatrixEncoding*)side_data->data;
*data = matrix_encoding;
return 0;
}
void avcodec_align_dimensions2(AVCodecContext *s, int *width, int *height,
int linesize_align[AV_NUM_DATA_POINTERS])
{
int i;
int w_align = 1;
int h_align = 1;
AVPixFmtDescriptor const *desc = av_pix_fmt_desc_get(s->pix_fmt);
if (desc) {
w_align = 1 << desc->log2_chroma_w;
h_align = 1 << desc->log2_chroma_h;
}
switch (s->pix_fmt) {
case AV_PIX_FMT_YUV420P:
case AV_PIX_FMT_YUYV422:
case AV_PIX_FMT_YVYU422:
case AV_PIX_FMT_UYVY422:
case AV_PIX_FMT_YUV422P:
case AV_PIX_FMT_YUV440P:
case AV_PIX_FMT_YUV444P:
case AV_PIX_FMT_GBRP:
case AV_PIX_FMT_GBRAP:
case AV_PIX_FMT_GRAY8:
case AV_PIX_FMT_GRAY16BE:
case AV_PIX_FMT_GRAY16LE:
case AV_PIX_FMT_YUVJ420P:
case AV_PIX_FMT_YUVJ422P:
case AV_PIX_FMT_YUVJ440P:
case AV_PIX_FMT_YUVJ444P:
case AV_PIX_FMT_YUVA420P:
case AV_PIX_FMT_YUVA422P:
case AV_PIX_FMT_YUVA444P:
case AV_PIX_FMT_YUV420P9LE:
case AV_PIX_FMT_YUV420P9BE:
case AV_PIX_FMT_YUV420P10LE:
case AV_PIX_FMT_YUV420P10BE:
case AV_PIX_FMT_YUV420P12LE:
case AV_PIX_FMT_YUV420P12BE:
case AV_PIX_FMT_YUV420P14LE:
case AV_PIX_FMT_YUV420P14BE:
case AV_PIX_FMT_YUV420P16LE:
case AV_PIX_FMT_YUV420P16BE:
case AV_PIX_FMT_YUVA420P9LE:
case AV_PIX_FMT_YUVA420P9BE:
case AV_PIX_FMT_YUVA420P10LE:
case AV_PIX_FMT_YUVA420P10BE:
case AV_PIX_FMT_YUVA420P16LE:
case AV_PIX_FMT_YUVA420P16BE:
case AV_PIX_FMT_YUV422P9LE:
case AV_PIX_FMT_YUV422P9BE:
case AV_PIX_FMT_YUV422P10LE:
case AV_PIX_FMT_YUV422P10BE:
case AV_PIX_FMT_YUV422P12LE:
case AV_PIX_FMT_YUV422P12BE:
case AV_PIX_FMT_YUV422P14LE:
case AV_PIX_FMT_YUV422P14BE:
case AV_PIX_FMT_YUV422P16LE:
case AV_PIX_FMT_YUV422P16BE:
case AV_PIX_FMT_YUVA422P9LE:
case AV_PIX_FMT_YUVA422P9BE:
case AV_PIX_FMT_YUVA422P10LE:
case AV_PIX_FMT_YUVA422P10BE:
case AV_PIX_FMT_YUVA422P12LE:
case AV_PIX_FMT_YUVA422P12BE:
case AV_PIX_FMT_YUVA422P16LE:
case AV_PIX_FMT_YUVA422P16BE:
case AV_PIX_FMT_YUV440P10LE:
case AV_PIX_FMT_YUV440P10BE:
case AV_PIX_FMT_YUV440P12LE:
case AV_PIX_FMT_YUV440P12BE:
case AV_PIX_FMT_YUV444P9LE:
case AV_PIX_FMT_YUV444P9BE:
case AV_PIX_FMT_YUV444P10LE:
case AV_PIX_FMT_YUV444P10BE:
case AV_PIX_FMT_YUV444P12LE:
case AV_PIX_FMT_YUV444P12BE:
case AV_PIX_FMT_YUV444P14LE:
case AV_PIX_FMT_YUV444P14BE:
case AV_PIX_FMT_YUV444P16LE:
case AV_PIX_FMT_YUV444P16BE:
case AV_PIX_FMT_YUVA444P9LE:
case AV_PIX_FMT_YUVA444P9BE:
case AV_PIX_FMT_YUVA444P10LE:
case AV_PIX_FMT_YUVA444P10BE:
case AV_PIX_FMT_YUVA444P12LE:
case AV_PIX_FMT_YUVA444P12BE:
case AV_PIX_FMT_YUVA444P16LE:
case AV_PIX_FMT_YUVA444P16BE:
case AV_PIX_FMT_GBRP9LE:
case AV_PIX_FMT_GBRP9BE:
case AV_PIX_FMT_GBRP10LE:
case AV_PIX_FMT_GBRP10BE:
case AV_PIX_FMT_GBRP12LE:
case AV_PIX_FMT_GBRP12BE:
case AV_PIX_FMT_GBRP14LE:
case AV_PIX_FMT_GBRP14BE:
case AV_PIX_FMT_GBRP16LE:
case AV_PIX_FMT_GBRP16BE:
case AV_PIX_FMT_GBRAP12LE:
case AV_PIX_FMT_GBRAP12BE:
case AV_PIX_FMT_GBRAP16LE:
case AV_PIX_FMT_GBRAP16BE:
w_align = 16; //FIXME assume 16 pixel per macroblock
h_align = 16 * 2; // interlaced needs 2 macroblocks height
break;
case AV_PIX_FMT_YUV411P:
case AV_PIX_FMT_YUVJ411P:
case AV_PIX_FMT_UYYVYY411:
w_align = 32;
h_align = 16 * 2;
break;
case AV_PIX_FMT_YUV410P:
if (s->codec_id == AV_CODEC_ID_SVQ1) {
w_align = 64;
h_align = 64;
}
break;
case AV_PIX_FMT_RGB555:
if (s->codec_id == AV_CODEC_ID_RPZA) {
w_align = 4;
h_align = 4;
}
if (s->codec_id == AV_CODEC_ID_INTERPLAY_VIDEO) {
w_align = 8;
h_align = 8;
}
break;
case AV_PIX_FMT_PAL8:
case AV_PIX_FMT_BGR8:
case AV_PIX_FMT_RGB8:
if (s->codec_id == AV_CODEC_ID_SMC ||
s->codec_id == AV_CODEC_ID_CINEPAK) {
w_align = 4;
h_align = 4;
}
if (s->codec_id == AV_CODEC_ID_JV ||
s->codec_id == AV_CODEC_ID_INTERPLAY_VIDEO) {
w_align = 8;
h_align = 8;
}
break;
case AV_PIX_FMT_BGR24:
if ((s->codec_id == AV_CODEC_ID_MSZH) ||
(s->codec_id == AV_CODEC_ID_ZLIB)) {
w_align = 4;
h_align = 4;
}
break;
case AV_PIX_FMT_RGB24:
if (s->codec_id == AV_CODEC_ID_CINEPAK) {
w_align = 4;
h_align = 4;
}
break;
default:
break;
}
if (s->codec_id == AV_CODEC_ID_IFF_ILBM) {
w_align = FFMAX(w_align, 8);
}
*width = FFALIGN(*width, w_align);
*height = FFALIGN(*height, h_align);
if (s->codec_id == AV_CODEC_ID_H264 || s->lowres ||
s->codec_id == AV_CODEC_ID_VP5 || s->codec_id == AV_CODEC_ID_VP6 ||
s->codec_id == AV_CODEC_ID_VP6F || s->codec_id == AV_CODEC_ID_VP6A
) {
// some of the optimized chroma MC reads one line too much
// which is also done in mpeg decoders with lowres > 0
*height += 2;
// H.264 uses edge emulation for out of frame motion vectors, for this
// it requires a temporary area large enough to hold a 21x21 block,
// increasing witdth ensure that the temporary area is large enough,
// the next rounded up width is 32
*width = FFMAX(*width, 32);
}
for (i = 0; i < 4; i++)
linesize_align[i] = STRIDE_ALIGN;
}
void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height)
{
const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(s->pix_fmt);
int chroma_shift = desc->log2_chroma_w;
int linesize_align[AV_NUM_DATA_POINTERS];
int align;
avcodec_align_dimensions2(s, width, height, linesize_align);
align = FFMAX(linesize_align[0], linesize_align[3]);
linesize_align[1] <<= chroma_shift;
linesize_align[2] <<= chroma_shift;
align = FFMAX3(align, linesize_align[1], linesize_align[2]);
*width = FFALIGN(*width, align);
}
int avcodec_enum_to_chroma_pos(int *xpos, int *ypos, enum AVChromaLocation pos)
{
if (pos <= AVCHROMA_LOC_UNSPECIFIED || pos >= AVCHROMA_LOC_NB)
return AVERROR(EINVAL);
pos--;
*xpos = (pos&1) * 128;
*ypos = ((pos>>1)^(pos<4)) * 128;
return 0;
}
enum AVChromaLocation avcodec_chroma_pos_to_enum(int xpos, int ypos)
{
int pos, xout, yout;
for (pos = AVCHROMA_LOC_UNSPECIFIED + 1; pos < AVCHROMA_LOC_NB; pos++) {
if (avcodec_enum_to_chroma_pos(&xout, &yout, pos) == 0 && xout == xpos && yout == ypos)
return pos;
}
return AVCHROMA_LOC_UNSPECIFIED;
}
int avcodec_fill_audio_frame(AVFrame *frame, int nb_channels,
enum AVSampleFormat sample_fmt, const uint8_t *buf,
int buf_size, int align)
{
int ch, planar, needed_size, ret = 0;
needed_size = av_samples_get_buffer_size(NULL, nb_channels,
frame->nb_samples, sample_fmt,
align);
if (buf_size < needed_size)
return AVERROR(EINVAL);
planar = av_sample_fmt_is_planar(sample_fmt);
if (planar && nb_channels > AV_NUM_DATA_POINTERS) {
if (!(frame->extended_data = av_mallocz_array(nb_channels,
sizeof(*frame->extended_data))))
return AVERROR(ENOMEM);
} else {
frame->extended_data = frame->data;
}
if ((ret = av_samples_fill_arrays(frame->extended_data, &frame->linesize[0],
(uint8_t *)(intptr_t)buf, nb_channels, frame->nb_samples,
sample_fmt, align)) < 0) {
if (frame->extended_data != frame->data)
av_freep(&frame->extended_data);
return ret;
}
if (frame->extended_data != frame->data) {
for (ch = 0; ch < AV_NUM_DATA_POINTERS; ch++)
frame->data[ch] = frame->extended_data[ch];
}
return ret;
}
void ff_color_frame(AVFrame *frame, const int c[4])
{
const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(frame->format);
int p, y;
av_assert0(desc->flags & AV_PIX_FMT_FLAG_PLANAR);
for (p = 0; p<desc->nb_components; p++) {
uint8_t *dst = frame->data[p];
int is_chroma = p == 1 || p == 2;
int bytes = is_chroma ? AV_CEIL_RSHIFT(frame->width, desc->log2_chroma_w) : frame->width;
int height = is_chroma ? AV_CEIL_RSHIFT(frame->height, desc->log2_chroma_h) : frame->height;
if (desc->comp[0].depth >= 9) {
((uint16_t*)dst)[0] = c[p];
av_memcpy_backptr(dst + 2, 2, bytes - 2);
dst += frame->linesize[p];
for (y = 1; y < height; y++) {
memcpy(dst, frame->data[p], 2*bytes);
dst += frame->linesize[p];
}
} else {
for (y = 0; y < height; y++) {
memset(dst, c[p], bytes);
dst += frame->linesize[p];
}
}
}
}
int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2), void *arg, int *ret, int count, int size)
{
int i;
for (i = 0; i < count; i++) {
int r = func(c, (char *)arg + i * size);
if (ret)
ret[i] = r;
}
emms_c();
return 0;
}
int avcodec_default_execute2(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2, int jobnr, int threadnr), void *arg, int *ret, int count)
{
int i;
for (i = 0; i < count; i++) {
int r = func(c, arg, i, 0);
if (ret)
ret[i] = r;
}
emms_c();
return 0;
}
enum AVPixelFormat avpriv_find_pix_fmt(const PixelFormatTag *tags,
unsigned int fourcc)
{
while (tags->pix_fmt >= 0) {
if (tags->fourcc == fourcc)
return tags->pix_fmt;
tags++;
}
return AV_PIX_FMT_NONE;
}
#if FF_API_CODEC_GET_SET
MAKE_ACCESSORS(AVCodecContext, codec, AVRational, pkt_timebase)
MAKE_ACCESSORS(AVCodecContext, codec, const AVCodecDescriptor *, codec_descriptor)
MAKE_ACCESSORS(AVCodecContext, codec, int, lowres)
MAKE_ACCESSORS(AVCodecContext, codec, int, seek_preroll)
MAKE_ACCESSORS(AVCodecContext, codec, uint16_t*, chroma_intra_matrix)
unsigned av_codec_get_codec_properties(const AVCodecContext *codec)
{
return codec->properties;
}
int av_codec_get_max_lowres(const AVCodec *codec)
{
return codec->max_lowres;
}
#endif
int avpriv_codec_get_cap_skip_frame_fill_param(const AVCodec *codec){
return !!(codec->caps_internal & FF_CODEC_CAP_SKIP_FRAME_FILL_PARAM);
}
static int64_t get_bit_rate(AVCodecContext *ctx)
{
int64_t bit_rate;
int bits_per_sample;
switch (ctx->codec_type) {
case AVMEDIA_TYPE_VIDEO:
case AVMEDIA_TYPE_DATA:
case AVMEDIA_TYPE_SUBTITLE:
case AVMEDIA_TYPE_ATTACHMENT:
bit_rate = ctx->bit_rate;
break;
case AVMEDIA_TYPE_AUDIO:
bits_per_sample = av_get_bits_per_sample(ctx->codec_id);
bit_rate = bits_per_sample ? ctx->sample_rate * (int64_t)ctx->channels * bits_per_sample : ctx->bit_rate;
break;
default:
bit_rate = 0;
break;
}
return bit_rate;
}
static void ff_lock_avcodec(AVCodecContext *log_ctx, const AVCodec *codec)
{
if (!(codec->caps_internal & FF_CODEC_CAP_INIT_THREADSAFE) && codec->init)
ff_mutex_lock(&codec_mutex);
}
static void ff_unlock_avcodec(const AVCodec *codec)
{
if (!(codec->caps_internal & FF_CODEC_CAP_INIT_THREADSAFE) && codec->init)
ff_mutex_unlock(&codec_mutex);
}
int attribute_align_arg ff_codec_open2_recursive(AVCodecContext *avctx, const AVCodec *codec, AVDictionary **options)
{
int ret = 0;
ff_unlock_avcodec(codec);
ret = avcodec_open2(avctx, codec, options);
ff_lock_avcodec(avctx, codec);
return ret;
}
int attribute_align_arg avcodec_open2(AVCodecContext *avctx, const AVCodec *codec, AVDictionary **options)
{
int ret = 0;
int codec_init_ok = 0;
AVDictionary *tmp = NULL;
const AVPixFmtDescriptor *pixdesc;
AVCodecInternal *avci;
if (avcodec_is_open(avctx))
return 0;
if (!codec && !avctx->codec) {
av_log(avctx, AV_LOG_ERROR, "No codec provided to avcodec_open2()\n");
return AVERROR(EINVAL);
}
if (codec && avctx->codec && codec != avctx->codec) {
av_log(avctx, AV_LOG_ERROR, "This AVCodecContext was allocated for %s, "
"but %s passed to avcodec_open2()\n", avctx->codec->name, codec->name);
return AVERROR(EINVAL);
}
if (!codec)
codec = avctx->codec;
if (avctx->extradata_size < 0 || avctx->extradata_size >= FF_MAX_EXTRADATA_SIZE)
return AVERROR(EINVAL);
if (options)
av_dict_copy(&tmp, *options, 0);
ff_lock_avcodec(avctx, codec);
avci = av_mallocz(sizeof(*avci));
if (!avci) {
ret = AVERROR(ENOMEM);
goto end;
}
avctx->internal = avci;
avci->to_free = av_frame_alloc();
if (!avci->to_free) {
ret = AVERROR(ENOMEM);
goto free_and_end;
}
avci->compat_decode_frame = av_frame_alloc();
if (!avci->compat_decode_frame) {
ret = AVERROR(ENOMEM);
goto free_and_end;
}
avci->buffer_frame = av_frame_alloc();
if (!avci->buffer_frame) {
ret = AVERROR(ENOMEM);
goto free_and_end;
}
avci->buffer_pkt = av_packet_alloc();
if (!avci->buffer_pkt) {
ret = AVERROR(ENOMEM);
goto free_and_end;
}
avci->ds.in_pkt = av_packet_alloc();
if (!avci->ds.in_pkt) {
ret = AVERROR(ENOMEM);
goto free_and_end;
}
avci->last_pkt_props = av_packet_alloc();
if (!avci->last_pkt_props) {
ret = AVERROR(ENOMEM);
goto free_and_end;
}
avci->skip_samples_multiplier = 1;
if (codec->priv_data_size > 0) {
if (!avctx->priv_data) {
avctx->priv_data = av_mallocz(codec->priv_data_size);
if (!avctx->priv_data) {
ret = AVERROR(ENOMEM);
goto end;
}
if (codec->priv_class) {
*(const AVClass **)avctx->priv_data = codec->priv_class;
av_opt_set_defaults(avctx->priv_data);
}
}
if (codec->priv_class && (ret = av_opt_set_dict(avctx->priv_data, &tmp)) < 0)
goto free_and_end;
} else {
avctx->priv_data = NULL;
}
if ((ret = av_opt_set_dict(avctx, &tmp)) < 0)
goto free_and_end;
if (avctx->codec_whitelist && av_match_list(codec->name, avctx->codec_whitelist, ',') <= 0) {
av_log(avctx, AV_LOG_ERROR, "Codec (%s) not on whitelist \'%s\'\n", codec->name, avctx->codec_whitelist);
ret = AVERROR(EINVAL);
goto free_and_end;
}
// only call ff_set_dimensions() for non H.264/VP6F/DXV codecs so as not to overwrite previously setup dimensions
if (!(avctx->coded_width && avctx->coded_height && avctx->width && avctx->height &&
(avctx->codec_id == AV_CODEC_ID_H264 || avctx->codec_id == AV_CODEC_ID_VP6F || avctx->codec_id == AV_CODEC_ID_DXV))) {
if (avctx->coded_width && avctx->coded_height)
ret = ff_set_dimensions(avctx, avctx->coded_width, avctx->coded_height);
else if (avctx->width && avctx->height)
ret = ff_set_dimensions(avctx, avctx->width, avctx->height);
if (ret < 0)
goto free_and_end;
}
if ((avctx->coded_width || avctx->coded_height || avctx->width || avctx->height)
&& ( av_image_check_size2(avctx->coded_width, avctx->coded_height, avctx->max_pixels, AV_PIX_FMT_NONE, 0, avctx) < 0
|| av_image_check_size2(avctx->width, avctx->height, avctx->max_pixels, AV_PIX_FMT_NONE, 0, avctx) < 0)) {
av_log(avctx, AV_LOG_WARNING, "Ignoring invalid width/height values\n");
ff_set_dimensions(avctx, 0, 0);
}
if (avctx->width > 0 && avctx->height > 0) {
if (av_image_check_sar(avctx->width, avctx->height,
avctx->sample_aspect_ratio) < 0) {
av_log(avctx, AV_LOG_WARNING, "ignoring invalid SAR: %u/%u\n",
avctx->sample_aspect_ratio.num,
avctx->sample_aspect_ratio.den);
avctx->sample_aspect_ratio = (AVRational){ 0, 1 };
}
}
/* if the decoder init function was already called previously,
* free the already allocated subtitle_header before overwriting it */
if (av_codec_is_decoder(codec))
av_freep(&avctx->subtitle_header);
if (avctx->channels > FF_SANE_NB_CHANNELS || avctx->channels < 0) {
av_log(avctx, AV_LOG_ERROR, "Too many or invalid channels: %d\n", avctx->channels);
ret = AVERROR(EINVAL);
goto free_and_end;
}
if (avctx->sample_rate < 0) {
av_log(avctx, AV_LOG_ERROR, "Invalid sample rate: %d\n", avctx->sample_rate);
ret = AVERROR(EINVAL);
goto free_and_end;
}
if (avctx->block_align < 0) {
av_log(avctx, AV_LOG_ERROR, "Invalid block align: %d\n", avctx->block_align);
ret = AVERROR(EINVAL);
goto free_and_end;
}
avctx->codec = codec;
if ((avctx->codec_type == AVMEDIA_TYPE_UNKNOWN || avctx->codec_type == codec->type) &&
avctx->codec_id == AV_CODEC_ID_NONE) {
avctx->codec_type = codec->type;
avctx->codec_id = codec->id;
}
if (avctx->codec_id != codec->id || (avctx->codec_type != codec->type
&& avctx->codec_type != AVMEDIA_TYPE_ATTACHMENT)) {
av_log(avctx, AV_LOG_ERROR, "Codec type or id mismatches\n");
ret = AVERROR(EINVAL);
goto free_and_end;
}
avctx->frame_number = 0;
avctx->codec_descriptor = avcodec_descriptor_get(avctx->codec_id);
if ((avctx->codec->capabilities & AV_CODEC_CAP_EXPERIMENTAL) &&
avctx->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
const char *codec_string = av_codec_is_encoder(codec) ? "encoder" : "decoder";
AVCodec *codec2;
av_log(avctx, AV_LOG_ERROR,
"The %s '%s' is experimental but experimental codecs are not enabled, "
"add '-strict %d' if you want to use it.\n",
codec_string, codec->name, FF_COMPLIANCE_EXPERIMENTAL);
codec2 = av_codec_is_encoder(codec) ? avcodec_find_encoder(codec->id) : avcodec_find_decoder(codec->id);
if (!(codec2->capabilities & AV_CODEC_CAP_EXPERIMENTAL))
av_log(avctx, AV_LOG_ERROR, "Alternatively use the non experimental %s '%s'.\n",
codec_string, codec2->name);
ret = AVERROR_EXPERIMENTAL;
goto free_and_end;
}
if (avctx->codec_type == AVMEDIA_TYPE_AUDIO &&
(!avctx->time_base.num || !avctx->time_base.den)) {
avctx->time_base.num = 1;
avctx->time_base.den = avctx->sample_rate;
}
if (!HAVE_THREADS)
av_log(avctx, AV_LOG_WARNING, "Warning: not compiled with thread support, using thread emulation\n");
if (CONFIG_FRAME_THREAD_ENCODER && av_codec_is_encoder(avctx->codec)) {
ff_unlock_avcodec(codec); //we will instantiate a few encoders thus kick the counter to prevent false detection of a problem
ret = ff_frame_thread_encoder_init(avctx, options ? *options : NULL);
ff_lock_avcodec(avctx, codec);
if (ret < 0)
goto free_and_end;
}
if (av_codec_is_decoder(avctx->codec)) {
ret = ff_decode_bsfs_init(avctx);
if (ret < 0)
goto free_and_end;
}
if (HAVE_THREADS
&& !(avci->frame_thread_encoder && (avctx->active_thread_type&FF_THREAD_FRAME))) {
ret = ff_thread_init(avctx);
if (ret < 0) {
goto free_and_end;
}
}
if (!HAVE_THREADS && !(codec->capabilities & AV_CODEC_CAP_AUTO_THREADS))
avctx->thread_count = 1;
if (avctx->codec->max_lowres < avctx->lowres || avctx->lowres < 0) {
av_log(avctx, AV_LOG_WARNING, "The maximum value for lowres supported by the decoder is %d\n",
avctx->codec->max_lowres);
avctx->lowres = avctx->codec->max_lowres;
}
if (av_codec_is_encoder(avctx->codec)) {
int i;
#if FF_API_CODED_FRAME
FF_DISABLE_DEPRECATION_WARNINGS
avctx->coded_frame = av_frame_alloc();
if (!avctx->coded_frame) {
ret = AVERROR(ENOMEM);
goto free_and_end;
}
FF_ENABLE_DEPRECATION_WARNINGS
#endif
if (avctx->time_base.num <= 0 || avctx->time_base.den <= 0) {
av_log(avctx, AV_LOG_ERROR, "The encoder timebase is not set.\n");
ret = AVERROR(EINVAL);
goto free_and_end;
}
if (avctx->codec->sample_fmts) {
for (i = 0; avctx->codec->sample_fmts[i] != AV_SAMPLE_FMT_NONE; i++) {
if (avctx->sample_fmt == avctx->codec->sample_fmts[i])
break;
if (avctx->channels == 1 &&
av_get_planar_sample_fmt(avctx->sample_fmt) ==
av_get_planar_sample_fmt(avctx->codec->sample_fmts[i])) {
avctx->sample_fmt = avctx->codec->sample_fmts[i];
break;
}
}
if (avctx->codec->sample_fmts[i] == AV_SAMPLE_FMT_NONE) {
char buf[128];
snprintf(buf, sizeof(buf), "%d", avctx->sample_fmt);
av_log(avctx, AV_LOG_ERROR, "Specified sample format %s is invalid or not supported\n",
(char *)av_x_if_null(av_get_sample_fmt_name(avctx->sample_fmt), buf));
ret = AVERROR(EINVAL);
goto free_and_end;
}
}
if (avctx->codec->pix_fmts) {
for (i = 0; avctx->codec->pix_fmts[i] != AV_PIX_FMT_NONE; i++)
if (avctx->pix_fmt == avctx->codec->pix_fmts[i])
break;
if (avctx->codec->pix_fmts[i] == AV_PIX_FMT_NONE
&& !((avctx->codec_id == AV_CODEC_ID_MJPEG || avctx->codec_id == AV_CODEC_ID_LJPEG)
&& avctx->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL)) {
char buf[128];
snprintf(buf, sizeof(buf), "%d", avctx->pix_fmt);
av_log(avctx, AV_LOG_ERROR, "Specified pixel format %s is invalid or not supported\n",
(char *)av_x_if_null(av_get_pix_fmt_name(avctx->pix_fmt), buf));
ret = AVERROR(EINVAL);
goto free_and_end;
}
if (avctx->codec->pix_fmts[i] == AV_PIX_FMT_YUVJ420P ||
avctx->codec->pix_fmts[i] == AV_PIX_FMT_YUVJ411P ||
avctx->codec->pix_fmts[i] == AV_PIX_FMT_YUVJ422P ||
avctx->codec->pix_fmts[i] == AV_PIX_FMT_YUVJ440P ||
avctx->codec->pix_fmts[i] == AV_PIX_FMT_YUVJ444P)
avctx->color_range = AVCOL_RANGE_JPEG;
}
if (avctx->codec->supported_samplerates) {
for (i = 0; avctx->codec->supported_samplerates[i] != 0; i++)
if (avctx->sample_rate == avctx->codec->supported_samplerates[i])
break;
if (avctx->codec->supported_samplerates[i] == 0) {
av_log(avctx, AV_LOG_ERROR, "Specified sample rate %d is not supported\n",
avctx->sample_rate);
ret = AVERROR(EINVAL);
goto free_and_end;
}
}
if (avctx->sample_rate < 0) {
av_log(avctx, AV_LOG_ERROR, "Specified sample rate %d is not supported\n",
avctx->sample_rate);
ret = AVERROR(EINVAL);
goto free_and_end;
}
if (avctx->codec->channel_layouts) {
if (!avctx->channel_layout) {
av_log(avctx, AV_LOG_WARNING, "Channel layout not specified\n");
} else {
for (i = 0; avctx->codec->channel_layouts[i] != 0; i++)
if (avctx->channel_layout == avctx->codec->channel_layouts[i])
break;
if (avctx->codec->channel_layouts[i] == 0) {
char buf[512];
av_get_channel_layout_string(buf, sizeof(buf), -1, avctx->channel_layout);
av_log(avctx, AV_LOG_ERROR, "Specified channel layout '%s' is not supported\n", buf);
ret = AVERROR(EINVAL);
goto free_and_end;
}
}
}
if (avctx->channel_layout && avctx->channels) {
int channels = av_get_channel_layout_nb_channels(avctx->channel_layout);
if (channels != avctx->channels) {
char buf[512];
av_get_channel_layout_string(buf, sizeof(buf), -1, avctx->channel_layout);
av_log(avctx, AV_LOG_ERROR,
"Channel layout '%s' with %d channels does not match number of specified channels %d\n",
buf, channels, avctx->channels);
ret = AVERROR(EINVAL);
goto free_and_end;
}
} else if (avctx->channel_layout) {
avctx->channels = av_get_channel_layout_nb_channels(avctx->channel_layout);
}
if (avctx->channels < 0) {
av_log(avctx, AV_LOG_ERROR, "Specified number of channels %d is not supported\n",
avctx->channels);
ret = AVERROR(EINVAL);
goto free_and_end;
}
if(avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
pixdesc = av_pix_fmt_desc_get(avctx->pix_fmt);
if ( avctx->bits_per_raw_sample < 0
|| (avctx->bits_per_raw_sample > 8 && pixdesc->comp[0].depth <= 8)) {
av_log(avctx, AV_LOG_WARNING, "Specified bit depth %d not possible with the specified pixel formats depth %d\n",
avctx->bits_per_raw_sample, pixdesc->comp[0].depth);
avctx->bits_per_raw_sample = pixdesc->comp[0].depth;
}
if (avctx->width <= 0 || avctx->height <= 0) {
av_log(avctx, AV_LOG_ERROR, "dimensions not set\n");
ret = AVERROR(EINVAL);
goto free_and_end;
}
}
if ( (avctx->codec_type == AVMEDIA_TYPE_VIDEO || avctx->codec_type == AVMEDIA_TYPE_AUDIO)
&& avctx->bit_rate>0 && avctx->bit_rate<1000) {
av_log(avctx, AV_LOG_WARNING, "Bitrate %"PRId64" is extremely low, maybe you mean %"PRId64"k\n", avctx->bit_rate, avctx->bit_rate);
}
if (!avctx->rc_initial_buffer_occupancy)
avctx->rc_initial_buffer_occupancy = avctx->rc_buffer_size * 3LL / 4;
if (avctx->ticks_per_frame && avctx->time_base.num &&
avctx->ticks_per_frame > INT_MAX / avctx->time_base.num) {
av_log(avctx, AV_LOG_ERROR,
"ticks_per_frame %d too large for the timebase %d/%d.",
avctx->ticks_per_frame,
avctx->time_base.num,
avctx->time_base.den);
goto free_and_end;
}
if (avctx->hw_frames_ctx) {
AVHWFramesContext *frames_ctx = (AVHWFramesContext*)avctx->hw_frames_ctx->data;
if (frames_ctx->format != avctx->pix_fmt) {
av_log(avctx, AV_LOG_ERROR,
"Mismatching AVCodecContext.pix_fmt and AVHWFramesContext.format\n");
ret = AVERROR(EINVAL);
goto free_and_end;
}
if (avctx->sw_pix_fmt != AV_PIX_FMT_NONE &&
avctx->sw_pix_fmt != frames_ctx->sw_format) {
av_log(avctx, AV_LOG_ERROR,
"Mismatching AVCodecContext.sw_pix_fmt (%s) "
"and AVHWFramesContext.sw_format (%s)\n",
av_get_pix_fmt_name(avctx->sw_pix_fmt),
av_get_pix_fmt_name(frames_ctx->sw_format));
ret = AVERROR(EINVAL);
goto free_and_end;
}
avctx->sw_pix_fmt = frames_ctx->sw_format;
}
}
avctx->pts_correction_num_faulty_pts =
avctx->pts_correction_num_faulty_dts = 0;
avctx->pts_correction_last_pts =
avctx->pts_correction_last_dts = INT64_MIN;
if ( !CONFIG_GRAY && avctx->flags & AV_CODEC_FLAG_GRAY
&& avctx->codec_descriptor->type == AVMEDIA_TYPE_VIDEO)
av_log(avctx, AV_LOG_WARNING,
"gray decoding requested but not enabled at configuration time\n");
if (avctx->flags2 & AV_CODEC_FLAG2_EXPORT_MVS) {
avctx->export_side_data |= AV_CODEC_EXPORT_DATA_MVS;
}
if ( avctx->codec->init && (!(avctx->active_thread_type&FF_THREAD_FRAME)
|| avci->frame_thread_encoder)) {
ret = avctx->codec->init(avctx);
if (ret < 0) {
goto free_and_end;
}
codec_init_ok = 1;
}
ret=0;
if (av_codec_is_decoder(avctx->codec)) {
if (!avctx->bit_rate)
avctx->bit_rate = get_bit_rate(avctx);
/* validate channel layout from the decoder */
if (avctx->channel_layout) {
int channels = av_get_channel_layout_nb_channels(avctx->channel_layout);
if (!avctx->channels)
avctx->channels = channels;
else if (channels != avctx->channels) {
char buf[512];
av_get_channel_layout_string(buf, sizeof(buf), -1, avctx->channel_layout);
av_log(avctx, AV_LOG_WARNING,
"Channel layout '%s' with %d channels does not match specified number of channels %d: "
"ignoring specified channel layout\n",
buf, channels, avctx->channels);
avctx->channel_layout = 0;
}
}
if (avctx->channels && avctx->channels < 0 ||
avctx->channels > FF_SANE_NB_CHANNELS) {
ret = AVERROR(EINVAL);
goto free_and_end;
}
if (avctx->bits_per_coded_sample < 0) {
ret = AVERROR(EINVAL);
goto free_and_end;
}
if (avctx->sub_charenc) {
if (avctx->codec_type != AVMEDIA_TYPE_SUBTITLE) {
av_log(avctx, AV_LOG_ERROR, "Character encoding is only "
"supported with subtitles codecs\n");
ret = AVERROR(EINVAL);
goto free_and_end;
} else if (avctx->codec_descriptor->props & AV_CODEC_PROP_BITMAP_SUB) {
av_log(avctx, AV_LOG_WARNING, "Codec '%s' is bitmap-based, "
"subtitles character encoding will be ignored\n",
avctx->codec_descriptor->name);
avctx->sub_charenc_mode = FF_SUB_CHARENC_MODE_DO_NOTHING;
} else {
/* input character encoding is set for a text based subtitle
* codec at this point */
if (avctx->sub_charenc_mode == FF_SUB_CHARENC_MODE_AUTOMATIC)
avctx->sub_charenc_mode = FF_SUB_CHARENC_MODE_PRE_DECODER;
if (avctx->sub_charenc_mode == FF_SUB_CHARENC_MODE_PRE_DECODER) {
#if CONFIG_ICONV
iconv_t cd = iconv_open("UTF-8", avctx->sub_charenc);
if (cd == (iconv_t)-1) {
ret = AVERROR(errno);
av_log(avctx, AV_LOG_ERROR, "Unable to open iconv context "
"with input character encoding \"%s\"\n", avctx->sub_charenc);
goto free_and_end;
}
iconv_close(cd);
#else
av_log(avctx, AV_LOG_ERROR, "Character encoding subtitles "
"conversion needs a libavcodec built with iconv support "
"for this codec\n");
ret = AVERROR(ENOSYS);
goto free_and_end;
#endif
}
}
}
#if FF_API_AVCTX_TIMEBASE
if (avctx->framerate.num > 0 && avctx->framerate.den > 0)
avctx->time_base = av_inv_q(av_mul_q(avctx->framerate, (AVRational){avctx->ticks_per_frame, 1}));
#endif
}
if (codec->priv_data_size > 0 && avctx->priv_data && codec->priv_class) {
av_assert0(*(const AVClass **)avctx->priv_data == codec->priv_class);
}
end:
ff_unlock_avcodec(codec);
if (options) {
av_dict_free(options);
*options = tmp;
}
return ret;
free_and_end:
if (avctx->codec && avctx->codec->close &&
(codec_init_ok ||
(avctx->codec->caps_internal & FF_CODEC_CAP_INIT_CLEANUP)))
avctx->codec->close(avctx);
if (HAVE_THREADS && avci->thread_ctx)
ff_thread_free(avctx);
if (codec->priv_class && codec->priv_data_size)
av_opt_free(avctx->priv_data);
av_opt_free(avctx);
#if FF_API_CODED_FRAME
FF_DISABLE_DEPRECATION_WARNINGS
av_frame_free(&avctx->coded_frame);
FF_ENABLE_DEPRECATION_WARNINGS
#endif
av_dict_free(&tmp);
av_freep(&avctx->priv_data);
av_freep(&avctx->subtitle_header);
if (avci) {
av_frame_free(&avci->to_free);
av_frame_free(&avci->compat_decode_frame);
av_frame_free(&avci->buffer_frame);
av_packet_free(&avci->buffer_pkt);
av_packet_free(&avci->last_pkt_props);
av_packet_free(&avci->ds.in_pkt);
ff_decode_bsfs_uninit(avctx);
av_buffer_unref(&avci->pool);
}
av_freep(&avci);
avctx->internal = NULL;
avctx->codec = NULL;
goto end;
}
void avsubtitle_free(AVSubtitle *sub)
{
int i;
for (i = 0; i < sub->num_rects; i++) {
av_freep(&sub->rects[i]->data[0]);
av_freep(&sub->rects[i]->data[1]);
av_freep(&sub->rects[i]->data[2]);
av_freep(&sub->rects[i]->data[3]);
av_freep(&sub->rects[i]->text);
av_freep(&sub->rects[i]->ass);
av_freep(&sub->rects[i]);
}
av_freep(&sub->rects);
memset(sub, 0, sizeof(*sub));
}
av_cold int avcodec_close(AVCodecContext *avctx)
{
int i;
if (!avctx)
return 0;
if (avcodec_is_open(avctx)) {
if (CONFIG_FRAME_THREAD_ENCODER &&
avctx->internal->frame_thread_encoder && avctx->thread_count > 1) {
ff_frame_thread_encoder_free(avctx);
}
if (HAVE_THREADS && avctx->internal->thread_ctx)
ff_thread_free(avctx);
if (avctx->codec && avctx->codec->close)
avctx->codec->close(avctx);
avctx->internal->byte_buffer_size = 0;
av_freep(&avctx->internal->byte_buffer);
av_frame_free(&avctx->internal->to_free);
av_frame_free(&avctx->internal->compat_decode_frame);
av_frame_free(&avctx->internal->buffer_frame);
av_packet_free(&avctx->internal->buffer_pkt);
av_packet_free(&avctx->internal->last_pkt_props);
av_packet_free(&avctx->internal->ds.in_pkt);
av_buffer_unref(&avctx->internal->pool);
if (avctx->hwaccel && avctx->hwaccel->uninit)
avctx->hwaccel->uninit(avctx);
av_freep(&avctx->internal->hwaccel_priv_data);
ff_decode_bsfs_uninit(avctx);
av_freep(&avctx->internal);
}
for (i = 0; i < avctx->nb_coded_side_data; i++)
av_freep(&avctx->coded_side_data[i].data);
av_freep(&avctx->coded_side_data);
avctx->nb_coded_side_data = 0;
av_buffer_unref(&avctx->hw_frames_ctx);
av_buffer_unref(&avctx->hw_device_ctx);
if (avctx->priv_data && avctx->codec && avctx->codec->priv_class)
av_opt_free(avctx->priv_data);
av_opt_free(avctx);
av_freep(&avctx->priv_data);
if (av_codec_is_encoder(avctx->codec)) {
av_freep(&avctx->extradata);
#if FF_API_CODED_FRAME
FF_DISABLE_DEPRECATION_WARNINGS
av_frame_free(&avctx->coded_frame);
FF_ENABLE_DEPRECATION_WARNINGS
#endif
}
avctx->codec = NULL;
avctx->active_thread_type = 0;
return 0;
}
const char *avcodec_get_name(enum AVCodecID id)
{
const AVCodecDescriptor *cd;
AVCodec *codec;
if (id == AV_CODEC_ID_NONE)
return "none";
cd = avcodec_descriptor_get(id);
if (cd)
return cd->name;
av_log(NULL, AV_LOG_WARNING, "Codec 0x%x is not in the full list.\n", id);
codec = avcodec_find_decoder(id);
if (codec)
return codec->name;
codec = avcodec_find_encoder(id);
if (codec)
return codec->name;
return "unknown_codec";
}
size_t av_get_codec_tag_string(char *buf, size_t buf_size, unsigned int codec_tag)
{
int i, len, ret = 0;
#define TAG_PRINT(x) \
(((x) >= '0' && (x) <= '9') || \
((x) >= 'a' && (x) <= 'z') || ((x) >= 'A' && (x) <= 'Z') || \
((x) == '.' || (x) == ' ' || (x) == '-' || (x) == '_'))
for (i = 0; i < 4; i++) {
len = snprintf(buf, buf_size,
TAG_PRINT(codec_tag & 0xFF) ? "%c" : "[%d]", codec_tag & 0xFF);
buf += len;
buf_size = buf_size > len ? buf_size - len : 0;
ret += len;
codec_tag >>= 8;
}
return ret;
}
void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode)
{
const char *codec_type;
const char *codec_name;
const char *profile = NULL;
int64_t bitrate;
int new_line = 0;
AVRational display_aspect_ratio;
const char *separator = enc->dump_separator ? (const char *)enc->dump_separator : ", ";
if (!buf || buf_size <= 0)
return;
codec_type = av_get_media_type_string(enc->codec_type);
codec_name = avcodec_get_name(enc->codec_id);
profile = avcodec_profile_name(enc->codec_id, enc->profile);
snprintf(buf, buf_size, "%s: %s", codec_type ? codec_type : "unknown",
codec_name);
buf[0] ^= 'a' ^ 'A'; /* first letter in uppercase */
if (enc->codec && strcmp(enc->codec->name, codec_name))
snprintf(buf + strlen(buf), buf_size - strlen(buf), " (%s)", enc->codec->name);
if (profile)
snprintf(buf + strlen(buf), buf_size - strlen(buf), " (%s)", profile);
if ( enc->codec_type == AVMEDIA_TYPE_VIDEO
&& av_log_get_level() >= AV_LOG_VERBOSE
&& enc->refs)
snprintf(buf + strlen(buf), buf_size - strlen(buf),
", %d reference frame%s",
enc->refs, enc->refs > 1 ? "s" : "");
if (enc->codec_tag)
snprintf(buf + strlen(buf), buf_size - strlen(buf), " (%s / 0x%04X)",
av_fourcc2str(enc->codec_tag), enc->codec_tag);
switch (enc->codec_type) {
case AVMEDIA_TYPE_VIDEO:
{
char detail[256] = "(";
av_strlcat(buf, separator, buf_size);
snprintf(buf + strlen(buf), buf_size - strlen(buf),
"%s", enc->pix_fmt == AV_PIX_FMT_NONE ? "none" :
av_get_pix_fmt_name(enc->pix_fmt));
if (enc->bits_per_raw_sample && enc->pix_fmt != AV_PIX_FMT_NONE &&
enc->bits_per_raw_sample < av_pix_fmt_desc_get(enc->pix_fmt)->comp[0].depth)
av_strlcatf(detail, sizeof(detail), "%d bpc, ", enc->bits_per_raw_sample);
if (enc->color_range != AVCOL_RANGE_UNSPECIFIED)
av_strlcatf(detail, sizeof(detail), "%s, ",
av_color_range_name(enc->color_range));
if (enc->colorspace != AVCOL_SPC_UNSPECIFIED ||
enc->color_primaries != AVCOL_PRI_UNSPECIFIED ||
enc->color_trc != AVCOL_TRC_UNSPECIFIED) {
if (enc->colorspace != (int)enc->color_primaries ||
enc->colorspace != (int)enc->color_trc) {
new_line = 1;
av_strlcatf(detail, sizeof(detail), "%s/%s/%s, ",
av_color_space_name(enc->colorspace),
av_color_primaries_name(enc->color_primaries),
av_color_transfer_name(enc->color_trc));
} else
av_strlcatf(detail, sizeof(detail), "%s, ",
av_get_colorspace_name(enc->colorspace));
}
if (enc->field_order != AV_FIELD_UNKNOWN) {
const char *field_order = "progressive";
if (enc->field_order == AV_FIELD_TT)
field_order = "top first";
else if (enc->field_order == AV_FIELD_BB)
field_order = "bottom first";
else if (enc->field_order == AV_FIELD_TB)
field_order = "top coded first (swapped)";
else if (enc->field_order == AV_FIELD_BT)
field_order = "bottom coded first (swapped)";
av_strlcatf(detail, sizeof(detail), "%s, ", field_order);
}
if (av_log_get_level() >= AV_LOG_VERBOSE &&
enc->chroma_sample_location != AVCHROMA_LOC_UNSPECIFIED)
av_strlcatf(detail, sizeof(detail), "%s, ",
av_chroma_location_name(enc->chroma_sample_location));
if (strlen(detail) > 1) {
detail[strlen(detail) - 2] = 0;
av_strlcatf(buf, buf_size, "%s)", detail);
}
}
if (enc->width) {
av_strlcat(buf, new_line ? separator : ", ", buf_size);
snprintf(buf + strlen(buf), buf_size - strlen(buf),
"%dx%d",
enc->width, enc->height);
if (av_log_get_level() >= AV_LOG_VERBOSE &&
(enc->width != enc->coded_width ||
enc->height != enc->coded_height))
snprintf(buf + strlen(buf), buf_size - strlen(buf),
" (%dx%d)", enc->coded_width, enc->coded_height);
if (enc->sample_aspect_ratio.num) {
av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,
enc->width * (int64_t)enc->sample_aspect_ratio.num,
enc->height * (int64_t)enc->sample_aspect_ratio.den,
1024 * 1024);
snprintf(buf + strlen(buf), buf_size - strlen(buf),
" [SAR %d:%d DAR %d:%d]",
enc->sample_aspect_ratio.num, enc->sample_aspect_ratio.den,
display_aspect_ratio.num, display_aspect_ratio.den);
}
if (av_log_get_level() >= AV_LOG_DEBUG) {
int g = av_gcd(enc->time_base.num, enc->time_base.den);
snprintf(buf + strlen(buf), buf_size - strlen(buf),
", %d/%d",
enc->time_base.num / g, enc->time_base.den / g);
}
}
if (encode) {
snprintf(buf + strlen(buf), buf_size - strlen(buf),
", q=%d-%d", enc->qmin, enc->qmax);
} else {
if (enc->properties & FF_CODEC_PROPERTY_CLOSED_CAPTIONS)
snprintf(buf + strlen(buf), buf_size - strlen(buf),
", Closed Captions");
if (enc->properties & FF_CODEC_PROPERTY_LOSSLESS)
snprintf(buf + strlen(buf), buf_size - strlen(buf),
", lossless");
}
break;
case AVMEDIA_TYPE_AUDIO:
av_strlcat(buf, separator, buf_size);
if (enc->sample_rate) {
snprintf(buf + strlen(buf), buf_size - strlen(buf),
"%d Hz, ", enc->sample_rate);
}
av_get_channel_layout_string(buf + strlen(buf), buf_size - strlen(buf), enc->channels, enc->channel_layout);
if (enc->sample_fmt != AV_SAMPLE_FMT_NONE) {
snprintf(buf + strlen(buf), buf_size - strlen(buf),
", %s", av_get_sample_fmt_name(enc->sample_fmt));
}
if ( enc->bits_per_raw_sample > 0
&& enc->bits_per_raw_sample != av_get_bytes_per_sample(enc->sample_fmt) * 8)
snprintf(buf + strlen(buf), buf_size - strlen(buf),
" (%d bit)", enc->bits_per_raw_sample);
if (av_log_get_level() >= AV_LOG_VERBOSE) {
if (enc->initial_padding)
snprintf(buf + strlen(buf), buf_size - strlen(buf),
", delay %d", enc->initial_padding);
if (enc->trailing_padding)
snprintf(buf + strlen(buf), buf_size - strlen(buf),
", padding %d", enc->trailing_padding);
}
break;
case AVMEDIA_TYPE_DATA:
if (av_log_get_level() >= AV_LOG_DEBUG) {
int g = av_gcd(enc->time_base.num, enc->time_base.den);
if (g)
snprintf(buf + strlen(buf), buf_size - strlen(buf),
", %d/%d",
enc->time_base.num / g, enc->time_base.den / g);
}
break;
case AVMEDIA_TYPE_SUBTITLE:
if (enc->width)
snprintf(buf + strlen(buf), buf_size - strlen(buf),
", %dx%d", enc->width, enc->height);
break;
default:
return;
}
if (encode) {
if (enc->flags & AV_CODEC_FLAG_PASS1)
snprintf(buf + strlen(buf), buf_size - strlen(buf),
", pass 1");
if (enc->flags & AV_CODEC_FLAG_PASS2)
snprintf(buf + strlen(buf), buf_size - strlen(buf),
", pass 2");
}
bitrate = get_bit_rate(enc);
if (bitrate != 0) {
snprintf(buf + strlen(buf), buf_size - strlen(buf),
", %"PRId64" kb/s", bitrate / 1000);
} else if (enc->rc_max_rate > 0) {
snprintf(buf + strlen(buf), buf_size - strlen(buf),
", max. %"PRId64" kb/s", enc->rc_max_rate / 1000);
}
}
const char *av_get_profile_name(const AVCodec *codec, int profile)
{
const AVProfile *p;
if (profile == FF_PROFILE_UNKNOWN || !codec->profiles)
return NULL;
for (p = codec->profiles; p->profile != FF_PROFILE_UNKNOWN; p++)
if (p->profile == profile)
return p->name;
return NULL;
}
const char *avcodec_profile_name(enum AVCodecID codec_id, int profile)
{
const AVCodecDescriptor *desc = avcodec_descriptor_get(codec_id);
const AVProfile *p;
if (profile == FF_PROFILE_UNKNOWN || !desc || !desc->profiles)
return NULL;
for (p = desc->profiles; p->profile != FF_PROFILE_UNKNOWN; p++)
if (p->profile == profile)
return p->name;
return NULL;
}
unsigned avcodec_version(void)
{
av_assert0(AV_CODEC_ID_PCM_S8_PLANAR==65563);
av_assert0(AV_CODEC_ID_ADPCM_G722==69660);
av_assert0(AV_CODEC_ID_SRT==94216);
av_assert0(LIBAVCODEC_VERSION_MICRO >= 100);
return LIBAVCODEC_VERSION_INT;
}
const char *avcodec_configuration(void)
{
return FFMPEG_CONFIGURATION;
}
const char *avcodec_license(void)
{
#define LICENSE_PREFIX "libavcodec license: "
return &LICENSE_PREFIX FFMPEG_LICENSE[sizeof(LICENSE_PREFIX) - 1];
}
int av_get_exact_bits_per_sample(enum AVCodecID codec_id)
{
switch (codec_id) {
case AV_CODEC_ID_8SVX_EXP:
case AV_CODEC_ID_8SVX_FIB:
case AV_CODEC_ID_ADPCM_CT:
case AV_CODEC_ID_ADPCM_IMA_APC:
case AV_CODEC_ID_ADPCM_IMA_EA_SEAD:
case AV_CODEC_ID_ADPCM_IMA_OKI:
case AV_CODEC_ID_ADPCM_IMA_WS:
case AV_CODEC_ID_ADPCM_G722:
case AV_CODEC_ID_ADPCM_YAMAHA:
case AV_CODEC_ID_ADPCM_AICA:
return 4;
case AV_CODEC_ID_DSD_LSBF:
case AV_CODEC_ID_DSD_MSBF:
case AV_CODEC_ID_DSD_LSBF_PLANAR:
case AV_CODEC_ID_DSD_MSBF_PLANAR:
case AV_CODEC_ID_PCM_ALAW:
case AV_CODEC_ID_PCM_MULAW:
case AV_CODEC_ID_PCM_VIDC:
case AV_CODEC_ID_PCM_S8:
case AV_CODEC_ID_PCM_S8_PLANAR:
case AV_CODEC_ID_PCM_U8:
case AV_CODEC_ID_SDX2_DPCM:
case AV_CODEC_ID_DERF_DPCM:
return 8;
case AV_CODEC_ID_PCM_S16BE:
case AV_CODEC_ID_PCM_S16BE_PLANAR:
case AV_CODEC_ID_PCM_S16LE:
case AV_CODEC_ID_PCM_S16LE_PLANAR:
case AV_CODEC_ID_PCM_U16BE:
case AV_CODEC_ID_PCM_U16LE:
return 16;
case AV_CODEC_ID_PCM_S24DAUD:
case AV_CODEC_ID_PCM_S24BE:
case AV_CODEC_ID_PCM_S24LE:
case AV_CODEC_ID_PCM_S24LE_PLANAR:
case AV_CODEC_ID_PCM_U24BE:
case AV_CODEC_ID_PCM_U24LE:
return 24;
case AV_CODEC_ID_PCM_S32BE:
case AV_CODEC_ID_PCM_S32LE:
case AV_CODEC_ID_PCM_S32LE_PLANAR:
case AV_CODEC_ID_PCM_U32BE:
case AV_CODEC_ID_PCM_U32LE:
case AV_CODEC_ID_PCM_F32BE:
case AV_CODEC_ID_PCM_F32LE:
case AV_CODEC_ID_PCM_F24LE:
case AV_CODEC_ID_PCM_F16LE:
return 32;
case AV_CODEC_ID_PCM_F64BE:
case AV_CODEC_ID_PCM_F64LE:
case AV_CODEC_ID_PCM_S64BE:
case AV_CODEC_ID_PCM_S64LE:
return 64;
default:
return 0;
}
}
enum AVCodecID av_get_pcm_codec(enum AVSampleFormat fmt, int be)
{
static const enum AVCodecID map[][2] = {
[AV_SAMPLE_FMT_U8 ] = { AV_CODEC_ID_PCM_U8, AV_CODEC_ID_PCM_U8 },
[AV_SAMPLE_FMT_S16 ] = { AV_CODEC_ID_PCM_S16LE, AV_CODEC_ID_PCM_S16BE },
[AV_SAMPLE_FMT_S32 ] = { AV_CODEC_ID_PCM_S32LE, AV_CODEC_ID_PCM_S32BE },
[AV_SAMPLE_FMT_FLT ] = { AV_CODEC_ID_PCM_F32LE, AV_CODEC_ID_PCM_F32BE },
[AV_SAMPLE_FMT_DBL ] = { AV_CODEC_ID_PCM_F64LE, AV_CODEC_ID_PCM_F64BE },
[AV_SAMPLE_FMT_U8P ] = { AV_CODEC_ID_PCM_U8, AV_CODEC_ID_PCM_U8 },
[AV_SAMPLE_FMT_S16P] = { AV_CODEC_ID_PCM_S16LE, AV_CODEC_ID_PCM_S16BE },
[AV_SAMPLE_FMT_S32P] = { AV_CODEC_ID_PCM_S32LE, AV_CODEC_ID_PCM_S32BE },
[AV_SAMPLE_FMT_S64P] = { AV_CODEC_ID_PCM_S64LE, AV_CODEC_ID_PCM_S64BE },
[AV_SAMPLE_FMT_FLTP] = { AV_CODEC_ID_PCM_F32LE, AV_CODEC_ID_PCM_F32BE },
[AV_SAMPLE_FMT_DBLP] = { AV_CODEC_ID_PCM_F64LE, AV_CODEC_ID_PCM_F64BE },
};
if (fmt < 0 || fmt >= FF_ARRAY_ELEMS(map))
return AV_CODEC_ID_NONE;
if (be < 0 || be > 1)
be = AV_NE(1, 0);
return map[fmt][be];
}
int av_get_bits_per_sample(enum AVCodecID codec_id)
{
switch (codec_id) {
case AV_CODEC_ID_ADPCM_SBPRO_2:
return 2;
case AV_CODEC_ID_ADPCM_SBPRO_3:
return 3;
case AV_CODEC_ID_ADPCM_SBPRO_4:
case AV_CODEC_ID_ADPCM_IMA_WAV:
case AV_CODEC_ID_ADPCM_IMA_QT:
case AV_CODEC_ID_ADPCM_SWF:
case AV_CODEC_ID_ADPCM_MS:
return 4;
default:
return av_get_exact_bits_per_sample(codec_id);
}
}
static int get_audio_frame_duration(enum AVCodecID id, int sr, int ch, int ba,
uint32_t tag, int bits_per_coded_sample, int64_t bitrate,
uint8_t * extradata, int frame_size, int frame_bytes)
{
int bps = av_get_exact_bits_per_sample(id);
int framecount = (ba > 0 && frame_bytes / ba > 0) ? frame_bytes / ba : 1;
/* codecs with an exact constant bits per sample */
if (bps > 0 && ch > 0 && frame_bytes > 0 && ch < 32768 && bps < 32768)
return (frame_bytes * 8LL) / (bps * ch);
bps = bits_per_coded_sample;
/* codecs with a fixed packet duration */
switch (id) {
case AV_CODEC_ID_ADPCM_ADX: return 32;
case AV_CODEC_ID_ADPCM_IMA_QT: return 64;
case AV_CODEC_ID_ADPCM_EA_XAS: return 128;
case AV_CODEC_ID_AMR_NB:
case AV_CODEC_ID_EVRC:
case AV_CODEC_ID_GSM:
case AV_CODEC_ID_QCELP:
case AV_CODEC_ID_RA_288: return 160;
case AV_CODEC_ID_AMR_WB:
case AV_CODEC_ID_GSM_MS: return 320;
case AV_CODEC_ID_MP1: return 384;
case AV_CODEC_ID_ATRAC1: return 512;
case AV_CODEC_ID_ATRAC9:
case AV_CODEC_ID_ATRAC3: return 1024 * framecount;
case AV_CODEC_ID_ATRAC3P: return 2048;
case AV_CODEC_ID_MP2:
case AV_CODEC_ID_MUSEPACK7: return 1152;
case AV_CODEC_ID_AC3: return 1536;
}
if (sr > 0) {
/* calc from sample rate */
if (id == AV_CODEC_ID_TTA)
return 256 * sr / 245;
else if (id == AV_CODEC_ID_DST)
return 588 * sr / 44100;
if (ch > 0) {
/* calc from sample rate and channels */
if (id == AV_CODEC_ID_BINKAUDIO_DCT)
return (480 << (sr / 22050)) / ch;
}
if (id == AV_CODEC_ID_MP3)
return sr <= 24000 ? 576 : 1152;
}
if (ba > 0) {
/* calc from block_align */
if (id == AV_CODEC_ID_SIPR) {
switch (ba) {
case 20: return 160;
case 19: return 144;
case 29: return 288;
case 37: return 480;
}
} else if (id == AV_CODEC_ID_ILBC) {
switch (ba) {
case 38: return 160;
case 50: return 240;
}
}
}
if (frame_bytes > 0) {
/* calc from frame_bytes only */
if (id == AV_CODEC_ID_TRUESPEECH)
return 240 * (frame_bytes / 32);
if (id == AV_CODEC_ID_NELLYMOSER)
return 256 * (frame_bytes / 64);
if (id == AV_CODEC_ID_RA_144)
return 160 * (frame_bytes / 20);
if (bps > 0) {
/* calc from frame_bytes and bits_per_coded_sample */
if (id == AV_CODEC_ID_ADPCM_G726 || id == AV_CODEC_ID_ADPCM_G726LE)
return frame_bytes * 8 / bps;
}
if (ch > 0 && ch < INT_MAX/16) {
/* calc from frame_bytes and channels */
switch (id) {
case AV_CODEC_ID_ADPCM_AFC:
return frame_bytes / (9 * ch) * 16;
case AV_CODEC_ID_ADPCM_PSX:
case AV_CODEC_ID_ADPCM_DTK:
return frame_bytes / (16 * ch) * 28;
case AV_CODEC_ID_ADPCM_4XM:
case AV_CODEC_ID_ADPCM_IMA_DAT4:
case AV_CODEC_ID_ADPCM_IMA_ISS:
return (frame_bytes - 4 * ch) * 2 / ch;
case AV_CODEC_ID_ADPCM_IMA_SMJPEG:
return (frame_bytes - 4) * 2 / ch;
case AV_CODEC_ID_ADPCM_IMA_AMV:
return (frame_bytes - 8) * 2 / ch;
case AV_CODEC_ID_ADPCM_THP:
case AV_CODEC_ID_ADPCM_THP_LE:
if (extradata)
return frame_bytes * 14 / (8 * ch);
break;
case AV_CODEC_ID_ADPCM_XA:
return (frame_bytes / 128) * 224 / ch;
case AV_CODEC_ID_INTERPLAY_DPCM:
return (frame_bytes - 6 - ch) / ch;
case AV_CODEC_ID_ROQ_DPCM:
return (frame_bytes - 8) / ch;
case AV_CODEC_ID_XAN_DPCM:
return (frame_bytes - 2 * ch) / ch;
case AV_CODEC_ID_MACE3:
return 3 * frame_bytes / ch;
case AV_CODEC_ID_MACE6:
return 6 * frame_bytes / ch;
case AV_CODEC_ID_PCM_LXF:
return 2 * (frame_bytes / (5 * ch));
case AV_CODEC_ID_IAC:
case AV_CODEC_ID_IMC:
return 4 * frame_bytes / ch;
}
if (tag) {
/* calc from frame_bytes, channels, and codec_tag */
if (id == AV_CODEC_ID_SOL_DPCM) {
if (tag == 3)
return frame_bytes / ch;
else
return frame_bytes * 2 / ch;
}
}
if (ba > 0) {
/* calc from frame_bytes, channels, and block_align */
int blocks = frame_bytes / ba;
switch (id) {
case AV_CODEC_ID_ADPCM_IMA_WAV:
if (bps < 2 || bps > 5)
return 0;
return blocks * (1 + (ba - 4 * ch) / (bps * ch) * 8);
case AV_CODEC_ID_ADPCM_IMA_DK3:
return blocks * (((ba - 16) * 2 / 3 * 4) / ch);
case AV_CODEC_ID_ADPCM_IMA_DK4:
return blocks * (1 + (ba - 4 * ch) * 2 / ch);
case AV_CODEC_ID_ADPCM_IMA_RAD:
return blocks * ((ba - 4 * ch) * 2 / ch);
case AV_CODEC_ID_ADPCM_MS:
return blocks * (2 + (ba - 7 * ch) * 2 / ch);
case AV_CODEC_ID_ADPCM_MTAF:
return blocks * (ba - 16) * 2 / ch;
}
}
if (bps > 0) {
/* calc from frame_bytes, channels, and bits_per_coded_sample */
switch (id) {
case AV_CODEC_ID_PCM_DVD:
if(bps<4 || frame_bytes<3)
return 0;
return 2 * ((frame_bytes - 3) / ((bps * 2 / 8) * ch));
case AV_CODEC_ID_PCM_BLURAY:
if(bps<4 || frame_bytes<4)
return 0;
return (frame_bytes - 4) / ((FFALIGN(ch, 2) * bps) / 8);
case AV_CODEC_ID_S302M:
return 2 * (frame_bytes / ((bps + 4) / 4)) / ch;
}
}
}
}
/* Fall back on using frame_size */
if (frame_size > 1 && frame_bytes)
return frame_size;
//For WMA we currently have no other means to calculate duration thus we
//do it here by assuming CBR, which is true for all known cases.
if (bitrate > 0 && frame_bytes > 0 && sr > 0 && ba > 1) {
if (id == AV_CODEC_ID_WMAV1 || id == AV_CODEC_ID_WMAV2)
return (frame_bytes * 8LL * sr) / bitrate;
}
return 0;
}
int av_get_audio_frame_duration(AVCodecContext *avctx, int frame_bytes)
{
return get_audio_frame_duration(avctx->codec_id, avctx->sample_rate,
avctx->channels, avctx->block_align,
avctx->codec_tag, avctx->bits_per_coded_sample,
avctx->bit_rate, avctx->extradata, avctx->frame_size,
frame_bytes);
}
int av_get_audio_frame_duration2(AVCodecParameters *par, int frame_bytes)
{
return get_audio_frame_duration(par->codec_id, par->sample_rate,
par->channels, par->block_align,
par->codec_tag, par->bits_per_coded_sample,
par->bit_rate, par->extradata, par->frame_size,
frame_bytes);
}
#if !HAVE_THREADS
int ff_thread_init(AVCodecContext *s)
{
return -1;
}
#endif
unsigned int av_xiphlacing(unsigned char *s, unsigned int v)
{
unsigned int n = 0;
while (v >= 0xff) {
*s++ = 0xff;
v -= 0xff;
n++;
}
*s = v;
n++;
return n;
}
int ff_match_2uint16(const uint16_t(*tab)[2], int size, int a, int b)
{
int i;
for (i = 0; i < size && !(tab[i][0] == a && tab[i][1] == b); i++) ;
return i;
}
const AVCodecHWConfig *avcodec_get_hw_config(const AVCodec *codec, int index)
{
int i;
if (!codec->hw_configs || index < 0)
return NULL;
for (i = 0; i <= index; i++)
if (!codec->hw_configs[i])
return NULL;
return &codec->hw_configs[index]->public;
}
#if FF_API_USER_VISIBLE_AVHWACCEL
AVHWAccel *av_hwaccel_next(const AVHWAccel *hwaccel)
{
return NULL;
}
void av_register_hwaccel(AVHWAccel *hwaccel)
{
}
#endif
#if FF_API_LOCKMGR
int av_lockmgr_register(int (*cb)(void **mutex, enum AVLockOp op))
{
return 0;
}
#endif
unsigned int avpriv_toupper4(unsigned int x)
{
return av_toupper(x & 0xFF) +
(av_toupper((x >> 8) & 0xFF) << 8) +
(av_toupper((x >> 16) & 0xFF) << 16) +
((unsigned)av_toupper((x >> 24) & 0xFF) << 24);
}
int ff_thread_ref_frame(ThreadFrame *dst, ThreadFrame *src)
{
int ret;
dst->owner[0] = src->owner[0];
dst->owner[1] = src->owner[1];
ret = av_frame_ref(dst->f, src->f);
if (ret < 0)
return ret;
av_assert0(!dst->progress);
if (src->progress &&
!(dst->progress = av_buffer_ref(src->progress))) {
ff_thread_release_buffer(dst->owner[0], dst);
return AVERROR(ENOMEM);
}
return 0;
}
#if !HAVE_THREADS
enum AVPixelFormat ff_thread_get_format(AVCodecContext *avctx, const enum AVPixelFormat *fmt)
{
return ff_get_format(avctx, fmt);
}
int ff_thread_get_buffer(AVCodecContext *avctx, ThreadFrame *f, int flags)
{
f->owner[0] = f->owner[1] = avctx;
return ff_get_buffer(avctx, f->f, flags);
}
void ff_thread_release_buffer(AVCodecContext *avctx, ThreadFrame *f)
{
if (f->f)
av_frame_unref(f->f);
}
void ff_thread_finish_setup(AVCodecContext *avctx)
{
}
void ff_thread_report_progress(ThreadFrame *f, int progress, int field)
{
}
void ff_thread_await_progress(ThreadFrame *f, int progress, int field)
{
}
int ff_thread_can_start_frame(AVCodecContext *avctx)
{
return 1;
}
int ff_alloc_entries(AVCodecContext *avctx, int count)
{
return 0;
}
void ff_reset_entries(AVCodecContext *avctx)
{
}
void ff_thread_await_progress2(AVCodecContext *avctx, int field, int thread, int shift)
{
}
void ff_thread_report_progress2(AVCodecContext *avctx, int field, int thread, int n)
{
}
#endif
int avcodec_is_open(AVCodecContext *s)
{
return !!s->internal;
}
int avpriv_bprint_to_extradata(AVCodecContext *avctx, struct AVBPrint *buf)
{
int ret;
char *str;
ret = av_bprint_finalize(buf, &str);
if (ret < 0)
return ret;
if (!av_bprint_is_complete(buf)) {
av_free(str);
return AVERROR(ENOMEM);
}
avctx->extradata = str;
/* Note: the string is NUL terminated (so extradata can be read as a
* string), but the ending character is not accounted in the size (in
* binary formats you are likely not supposed to mux that character). When
* extradata is copied, it is also padded with AV_INPUT_BUFFER_PADDING_SIZE
* zeros. */
avctx->extradata_size = buf->len;
return 0;
}
const uint8_t *avpriv_find_start_code(const uint8_t *av_restrict p,
const uint8_t *end,
uint32_t *av_restrict state)
{
int i;
av_assert0(p <= end);
if (p >= end)
return end;
for (i = 0; i < 3; i++) {
uint32_t tmp = *state << 8;
*state = tmp + *(p++);
if (tmp == 0x100 || p == end)
return p;
}
while (p < end) {
if (p[-1] > 1 ) p += 3;
else if (p[-2] ) p += 2;
else if (p[-3]|(p[-1]-1)) p++;
else {
p++;
break;
}
}
p = FFMIN(p, end) - 4;
*state = AV_RB32(p);
return p + 4;
}
AVCPBProperties *av_cpb_properties_alloc(size_t *size)
{
AVCPBProperties *props = av_mallocz(sizeof(AVCPBProperties));
if (!props)
return NULL;
if (size)
*size = sizeof(*props);
props->vbv_delay = UINT64_MAX;
return props;
}
AVCPBProperties *ff_add_cpb_side_data(AVCodecContext *avctx)
{
AVPacketSideData *tmp;
AVCPBProperties *props;
size_t size;
int i;
for (i = 0; i < avctx->nb_coded_side_data; i++)
if (avctx->coded_side_data[i].type == AV_PKT_DATA_CPB_PROPERTIES)
return (AVCPBProperties *)avctx->coded_side_data[i].data;
props = av_cpb_properties_alloc(&size);
if (!props)
return NULL;
tmp = av_realloc_array(avctx->coded_side_data, avctx->nb_coded_side_data + 1, sizeof(*tmp));
if (!tmp) {
av_freep(&props);
return NULL;
}
avctx->coded_side_data = tmp;
avctx->nb_coded_side_data++;
avctx->coded_side_data[avctx->nb_coded_side_data - 1].type = AV_PKT_DATA_CPB_PROPERTIES;
avctx->coded_side_data[avctx->nb_coded_side_data - 1].data = (uint8_t*)props;
avctx->coded_side_data[avctx->nb_coded_side_data - 1].size = size;
return props;
}
static void codec_parameters_reset(AVCodecParameters *par)
{
av_freep(&par->extradata);
memset(par, 0, sizeof(*par));
par->codec_type = AVMEDIA_TYPE_UNKNOWN;
par->codec_id = AV_CODEC_ID_NONE;
par->format = -1;
par->field_order = AV_FIELD_UNKNOWN;
par->color_range = AVCOL_RANGE_UNSPECIFIED;
par->color_primaries = AVCOL_PRI_UNSPECIFIED;
par->color_trc = AVCOL_TRC_UNSPECIFIED;
par->color_space = AVCOL_SPC_UNSPECIFIED;
par->chroma_location = AVCHROMA_LOC_UNSPECIFIED;
par->sample_aspect_ratio = (AVRational){ 0, 1 };
par->profile = FF_PROFILE_UNKNOWN;
par->level = FF_LEVEL_UNKNOWN;
}
AVCodecParameters *avcodec_parameters_alloc(void)
{
AVCodecParameters *par = av_mallocz(sizeof(*par));
if (!par)
return NULL;
codec_parameters_reset(par);
return par;
}
void avcodec_parameters_free(AVCodecParameters **ppar)
{
AVCodecParameters *par = *ppar;
if (!par)
return;
codec_parameters_reset(par);
av_freep(ppar);
}
int avcodec_parameters_copy(AVCodecParameters *dst, const AVCodecParameters *src)
{
codec_parameters_reset(dst);
memcpy(dst, src, sizeof(*dst));
dst->extradata = NULL;
dst->extradata_size = 0;
if (src->extradata) {
dst->extradata = av_mallocz(src->extradata_size + AV_INPUT_BUFFER_PADDING_SIZE);
if (!dst->extradata)
return AVERROR(ENOMEM);
memcpy(dst->extradata, src->extradata, src->extradata_size);
dst->extradata_size = src->extradata_size;
}
return 0;
}
int avcodec_parameters_from_context(AVCodecParameters *par,
const AVCodecContext *codec)
{
codec_parameters_reset(par);
par->codec_type = codec->codec_type;
par->codec_id = codec->codec_id;
par->codec_tag = codec->codec_tag;
par->bit_rate = codec->bit_rate;
par->bits_per_coded_sample = codec->bits_per_coded_sample;
par->bits_per_raw_sample = codec->bits_per_raw_sample;
par->profile = codec->profile;
par->level = codec->level;
switch (par->codec_type) {
case AVMEDIA_TYPE_VIDEO:
par->format = codec->pix_fmt;
par->width = codec->width;
par->height = codec->height;
par->field_order = codec->field_order;
par->color_range = codec->color_range;
par->color_primaries = codec->color_primaries;
par->color_trc = codec->color_trc;
par->color_space = codec->colorspace;
par->chroma_location = codec->chroma_sample_location;
par->sample_aspect_ratio = codec->sample_aspect_ratio;
par->video_delay = codec->has_b_frames;
break;
case AVMEDIA_TYPE_AUDIO:
par->format = codec->sample_fmt;
par->channel_layout = codec->channel_layout;
par->channels = codec->channels;
par->sample_rate = codec->sample_rate;
par->block_align = codec->block_align;
par->frame_size = codec->frame_size;
par->initial_padding = codec->initial_padding;
par->trailing_padding = codec->trailing_padding;
par->seek_preroll = codec->seek_preroll;
break;
case AVMEDIA_TYPE_SUBTITLE:
par->width = codec->width;
par->height = codec->height;
break;
}
if (codec->extradata) {
par->extradata = av_mallocz(codec->extradata_size + AV_INPUT_BUFFER_PADDING_SIZE);
if (!par->extradata)
return AVERROR(ENOMEM);
memcpy(par->extradata, codec->extradata, codec->extradata_size);
par->extradata_size = codec->extradata_size;
}
return 0;
}
int avcodec_parameters_to_context(AVCodecContext *codec,
const AVCodecParameters *par)
{
codec->codec_type = par->codec_type;
codec->codec_id = par->codec_id;
codec->codec_tag = par->codec_tag;
codec->bit_rate = par->bit_rate;
codec->bits_per_coded_sample = par->bits_per_coded_sample;
codec->bits_per_raw_sample = par->bits_per_raw_sample;
codec->profile = par->profile;
codec->level = par->level;
switch (par->codec_type) {
case AVMEDIA_TYPE_VIDEO:
codec->pix_fmt = par->format;
codec->width = par->width;
codec->height = par->height;
codec->field_order = par->field_order;
codec->color_range = par->color_range;
codec->color_primaries = par->color_primaries;
codec->color_trc = par->color_trc;
codec->colorspace = par->color_space;
codec->chroma_sample_location = par->chroma_location;
codec->sample_aspect_ratio = par->sample_aspect_ratio;
codec->has_b_frames = par->video_delay;
break;
case AVMEDIA_TYPE_AUDIO:
codec->sample_fmt = par->format;
codec->channel_layout = par->channel_layout;
codec->channels = par->channels;
codec->sample_rate = par->sample_rate;
codec->block_align = par->block_align;
codec->frame_size = par->frame_size;
codec->delay =
codec->initial_padding = par->initial_padding;
codec->trailing_padding = par->trailing_padding;
codec->seek_preroll = par->seek_preroll;
break;
case AVMEDIA_TYPE_SUBTITLE:
codec->width = par->width;
codec->height = par->height;
break;
}
if (par->extradata) {
av_freep(&codec->extradata);
codec->extradata = av_mallocz(par->extradata_size + AV_INPUT_BUFFER_PADDING_SIZE);
if (!codec->extradata)
return AVERROR(ENOMEM);
memcpy(codec->extradata, par->extradata, par->extradata_size);
codec->extradata_size = par->extradata_size;
}
return 0;
}
int ff_alloc_a53_sei(const AVFrame *frame, size_t prefix_len,
void **data, size_t *sei_size)
{
AVFrameSideData *side_data = NULL;
uint8_t *sei_data;
if (frame)
side_data = av_frame_get_side_data(frame, AV_FRAME_DATA_A53_CC);
if (!side_data) {
*data = NULL;
return 0;
}
*sei_size = side_data->size + 11;
*data = av_mallocz(*sei_size + prefix_len);
if (!*data)
return AVERROR(ENOMEM);
sei_data = (uint8_t*)*data + prefix_len;
// country code
sei_data[0] = 181;
sei_data[1] = 0;
sei_data[2] = 49;
/**
* 'GA94' is standard in North America for ATSC, but hard coding
* this style may not be the right thing to do -- other formats
* do exist. This information is not available in the side_data
* so we are going with this right now.
*/
AV_WL32(sei_data + 3, MKTAG('G', 'A', '9', '4'));
sei_data[7] = 3;
sei_data[8] = ((side_data->size/3) & 0x1f) | 0x40;
sei_data[9] = 0;
memcpy(sei_data + 10, side_data->data, side_data->size);
sei_data[side_data->size+10] = 255;
return 0;
}
int64_t ff_guess_coded_bitrate(AVCodecContext *avctx)
{
AVRational framerate = avctx->framerate;
int bits_per_coded_sample = avctx->bits_per_coded_sample;
int64_t bitrate;
if (!(framerate.num && framerate.den))
framerate = av_inv_q(avctx->time_base);
if (!(framerate.num && framerate.den))
return 0;
if (!bits_per_coded_sample) {
const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(avctx->pix_fmt);
bits_per_coded_sample = av_get_bits_per_pixel(desc);
}
bitrate = (int64_t)bits_per_coded_sample * avctx->width * avctx->height *
framerate.num / framerate.den;
return bitrate;
}
int ff_int_from_list_or_default(void *ctx, const char * val_name, int val,
const int * array_valid_values, int default_value)
{
int i = 0, ref_val;
while (1) {
ref_val = array_valid_values[i];
if (ref_val == INT_MAX)
break;
if (val == ref_val)
return val;
i++;
}
/* val is not a valid value */
av_log(ctx, AV_LOG_DEBUG,
"%s %d are not supported. Set to default value : %d\n", val_name, val, default_value);
return default_value;
}
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