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ffmpeg/libavcodec/utils.c

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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 Libav.
*
* Libav 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.
*
* Libav 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 Libav; 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/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/pixdesc.h"
#include "libavutil/imgutils.h"
#include "libavutil/samplefmt.h"
#include "libavutil/dict.h"
#include "avcodec.h"
#include "decode.h"
#include "libavutil/opt.h"
#include "me_cmp.h"
#include "mpegvideo.h"
#include "thread.h"
#include "internal.h"
#include "bytestream.h"
#include "version.h"
#include <stdlib.h>
#include <stdarg.h>
#include <limits.h>
#include <float.h>
static int volatile entangled_thread_counter = 0;
static int (*lockmgr_cb)(void **mutex, enum AVLockOp op);
static void *codec_mutex;
static void *avformat_mutex;
void av_fast_padded_malloc(void *ptr, unsigned int *size, size_t min_size)
{
void **p = ptr;
if (min_size > SIZE_MAX - AV_INPUT_BUFFER_PADDING_SIZE) {
av_freep(p);
*size = 0;
return;
}
av_fast_malloc(p, size, min_size + AV_INPUT_BUFFER_PADDING_SIZE);
if (*size)
memset((uint8_t *)*p + min_size, 0, AV_INPUT_BUFFER_PADDING_SIZE);
}
/* encoder management */
static AVCodec *first_avcodec = NULL;
AVCodec *av_codec_next(const AVCodec *c)
{
if (c)
return c->next;
else
return first_avcodec;
}
static av_cold void avcodec_init(void)
{
static int initialized = 0;
if (initialized != 0)
return;
initialized = 1;
if (CONFIG_ME_CMP)
ff_me_cmp_init_static();
}
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);
}
av_cold void avcodec_register(AVCodec *codec)
{
AVCodec **p;
avcodec_init();
p = &first_avcodec;
while (*p)
p = &(*p)->next;
*p = codec;
codec->next = NULL;
if (codec->init_static_data)
codec->init_static_data(codec);
}
#if FF_API_EMU_EDGE
unsigned avcodec_get_edge_width(void)
{
return EDGE_WIDTH;
}
#endif
#if FF_API_SET_DIMENSIONS
void avcodec_set_dimensions(AVCodecContext *s, int width, int height)
{
ff_set_dimensions(s, width, height);
}
#endif
int ff_set_dimensions(AVCodecContext *s, int width, int height)
{
int ret = av_image_check_size(width, height, 0, s);
if (ret < 0)
width = height = 0;
s->width = s->coded_width = width;
s->height = s->coded_height = height;
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;
}
#if HAVE_SIMD_ALIGN_32
# define STRIDE_ALIGN 32
#elif HAVE_SIMD_ALIGN_16
# define STRIDE_ALIGN 16
#else
# define STRIDE_ALIGN 8
#endif
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;
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_YUV422P9LE:
case AV_PIX_FMT_YUV422P9BE:
case AV_PIX_FMT_YUV422P10LE:
case AV_PIX_FMT_YUV422P10BE:
case AV_PIX_FMT_YUVA422P10LE:
case AV_PIX_FMT_YUVA422P10BE:
case AV_PIX_FMT_YUV444P9LE:
case AV_PIX_FMT_YUV444P9BE:
case AV_PIX_FMT_YUV444P10LE:
case AV_PIX_FMT_YUV444P10BE:
case AV_PIX_FMT_YUVA444P10LE:
case AV_PIX_FMT_YUVA444P10BE:
case AV_PIX_FMT_GBRP9LE:
case AV_PIX_FMT_GBRP9BE:
case AV_PIX_FMT_GBRP10LE:
case AV_PIX_FMT_GBRP10BE:
case AV_PIX_FMT_GBRAP12LE:
case AV_PIX_FMT_GBRAP12BE:
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_UYYVYY411:
w_align = 32;
h_align = 8;
break;
case AV_PIX_FMT_YUV410P:
if (s->codec_id == AV_CODEC_ID_SVQ1) {
w_align = 64;
h_align = 64;
}
case AV_PIX_FMT_RGB555:
if (s->codec_id == AV_CODEC_ID_RPZA) {
w_align = 4;
h_align = 4;
}
case AV_PIX_FMT_PAL8:
case AV_PIX_FMT_BGR8:
case AV_PIX_FMT_RGB8:
if (s->codec_id == AV_CODEC_ID_SMC) {
w_align = 4;
h_align = 4;
}
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;
default:
w_align = 1;
h_align = 1;
break;
}
*width = FFALIGN(*width, w_align);
*height = FFALIGN(*height, h_align);
if (s->codec_id == AV_CODEC_ID_H264)
// some of the optimized chroma MC reads one line too much
*height += 2;
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_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(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],
buf, nb_channels, frame->nb_samples,
sample_fmt, align)) < 0) {
if (frame->extended_data != frame->data)
av_free(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;
}
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;
}
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;
}
return 0;
}
int attribute_align_arg avcodec_open2(AVCodecContext *avctx, const AVCodec *codec, AVDictionary **options)
{
int ret = 0;
AVDictionary *tmp = NULL;
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);
/* If there is a user-supplied mutex locking routine, call it. */
if (!(codec->caps_internal & FF_CODEC_CAP_INIT_THREADSAFE) && codec->init) {
if (lockmgr_cb) {
if ((*lockmgr_cb)(&codec_mutex, AV_LOCK_OBTAIN))
return -1;
}
entangled_thread_counter++;
if (entangled_thread_counter != 1) {
av_log(avctx, AV_LOG_ERROR,
"Insufficient thread locking. At least %d threads are "
"calling avcodec_open2() at the same time right now.\n",
entangled_thread_counter);
ret = -1;
goto end;
}
}
avctx->internal = av_mallocz(sizeof(AVCodecInternal));
if (!avctx->internal) {
ret = AVERROR(ENOMEM);
goto end;
}
avctx->internal->pool = av_mallocz(sizeof(*avctx->internal->pool));
if (!avctx->internal->pool) {
ret = AVERROR(ENOMEM);
goto free_and_end;
}
avctx->internal->to_free = av_frame_alloc();
if (!avctx->internal->to_free) {
ret = AVERROR(ENOMEM);
goto free_and_end;
}
avctx->internal->compat_decode_frame = av_frame_alloc();
if (!avctx->internal->compat_decode_frame) {
ret = AVERROR(ENOMEM);
goto free_and_end;
}
avctx->internal->buffer_frame = av_frame_alloc();
if (!avctx->internal->buffer_frame) {
ret = AVERROR(ENOMEM);
goto free_and_end;
}
avctx->internal->buffer_pkt = av_packet_alloc();
if (!avctx->internal->buffer_pkt) {
ret = AVERROR(ENOMEM);
goto free_and_end;
}
avctx->internal->ds.in_pkt = av_packet_alloc();
if (!avctx->internal->ds.in_pkt) {
ret = AVERROR(ENOMEM);
goto free_and_end;
}
avctx->internal->last_pkt_props = av_packet_alloc();
if (!avctx->internal->last_pkt_props) {
ret = AVERROR(ENOMEM);
goto free_and_end;
}
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->coded_width && avctx->coded_height && !avctx->width && !avctx->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_size(avctx->coded_width, avctx->coded_height, 0, avctx) < 0
|| av_image_check_size(avctx->width, avctx->height, 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) {
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;
if ((avctx->codec->capabilities & AV_CODEC_CAP_EXPERIMENTAL) &&
avctx->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
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) {
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 (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) {
av_log(avctx, AV_LOG_ERROR, "Specified sample_fmt is not supported.\n");
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) {
av_log(avctx, AV_LOG_ERROR, "Specified pix_fmt is not supported\n");
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_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 is not supported\n");
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) {
av_log(avctx, AV_LOG_ERROR, "Specified channel_layout is not supported\n");
ret = AVERROR(EINVAL);
goto free_and_end;
}
}
}
if (avctx->channel_layout && avctx->channels) {
if (av_get_channel_layout_nb_channels(avctx->channel_layout) != avctx->channels) {
av_log(avctx, AV_LOG_ERROR, "channel layout does not match number of channels\n");
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->rc_initial_buffer_occupancy)
avctx->rc_initial_buffer_occupancy = avctx->rc_buffer_size * 3 / 4;
if (avctx->ticks_per_frame &&
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;
}
}
if (avctx->codec->init && !(avctx->active_thread_type & FF_THREAD_FRAME)) {
ret = avctx->codec->init(avctx);
if (ret < 0) {
goto free_and_end;
}
}
#if FF_API_AUDIOENC_DELAY
if (av_codec_is_encoder(avctx->codec))
avctx->delay = avctx->initial_padding;
#endif
if (av_codec_is_decoder(avctx->codec)) {
/* 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) {
av_log(avctx, AV_LOG_WARNING,
"channel layout does not match number of channels\n");
avctx->channel_layout = 0;
}
}
if (avctx->channels && avctx->channels < 0 ||
avctx->channels > FF_SANE_NB_CHANNELS) {
ret = AVERROR(EINVAL);
goto free_and_end;
}
#if FF_API_AVCTX_TIMEBASE
if (avctx->framerate.num > 0 && avctx->framerate.den > 0)
avctx->time_base = av_inv_q(avctx->framerate);
#endif
}
end:
if (!(codec->caps_internal & FF_CODEC_CAP_INIT_THREADSAFE) && codec->init) {
entangled_thread_counter--;
/* Release any user-supplied mutex. */
if (lockmgr_cb) {
(*lockmgr_cb)(&codec_mutex, AV_LOCK_RELEASE);
}
}
if (options) {
av_dict_free(options);
*options = tmp;
}
return ret;
free_and_end:
if (avctx->codec &&
(avctx->codec->caps_internal & FF_CODEC_CAP_INIT_CLEANUP))
avctx->codec->close(avctx);
if (avctx->priv_data && avctx->codec && avctx->codec->priv_class)
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);
if (avctx->internal) {
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_freep(&avctx->internal->pool);
}
av_freep(&avctx->internal);
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(AVSubtitle));
}
av_cold int avcodec_close(AVCodecContext *avctx)
{
int i;
if (avcodec_is_open(avctx)) {
FramePool *pool = avctx->internal->pool;
if (HAVE_THREADS && avctx->internal->thread_ctx)
ff_thread_free(avctx);
if (avctx->codec && avctx->codec->close)
avctx->codec->close(avctx);
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);
for (i = 0; i < FF_ARRAY_ELEMS(pool->pools); i++)
av_buffer_pool_uninit(&pool->pools[i]);
av_freep(&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);
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;
}
static AVCodec *find_encdec(enum AVCodecID id, int encoder)
{
AVCodec *p, *experimental = NULL;
p = first_avcodec;
while (p) {
if ((encoder ? av_codec_is_encoder(p) : av_codec_is_decoder(p)) &&
p->id == id) {
if (p->capabilities & AV_CODEC_CAP_EXPERIMENTAL && !experimental) {
experimental = p;
} else
return p;
}
p = p->next;
}
return experimental;
}
AVCodec *avcodec_find_encoder(enum AVCodecID id)
{
return find_encdec(id, 1);
}
AVCodec *avcodec_find_encoder_by_name(const char *name)
{
AVCodec *p;
if (!name)
return NULL;
p = first_avcodec;
while (p) {
if (av_codec_is_encoder(p) && strcmp(name, p->name) == 0)
return p;
p = p->next;
}
return NULL;
}
AVCodec *avcodec_find_decoder(enum AVCodecID id)
{
return find_encdec(id, 0);
}
AVCodec *avcodec_find_decoder_by_name(const char *name)
{
AVCodec *p;
if (!name)
return NULL;
p = first_avcodec;
while (p) {
if (av_codec_is_decoder(p) && strcmp(name, p->name) == 0)
return p;
p = p->next;
}
return NULL;
}
static int get_bit_rate(AVCodecContext *ctx)
{
int 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 * ctx->channels * bits_per_sample : ctx->bit_rate;
break;
default:
bit_rate = 0;
break;
}
return bit_rate;
}
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) == ' '))
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_name;
const char *profile = NULL;
char buf1[32];
int bitrate;
int new_line = 0;
AVRational display_aspect_ratio;
const AVCodecDescriptor *desc = avcodec_descriptor_get(enc->codec_id);
if (desc) {
codec_name = desc->name;
profile = avcodec_profile_name(enc->codec_id, enc->profile);
} else if (enc->codec_id == AV_CODEC_ID_MPEG2TS) {
/* fake mpeg2 transport stream codec (currently not
* registered) */
codec_name = "mpeg2ts";
} else {
/* output avi tags */
char tag_buf[32];
av_get_codec_tag_string(tag_buf, sizeof(tag_buf), enc->codec_tag);
snprintf(buf1, sizeof(buf1), "%s / 0x%04X", tag_buf, enc->codec_tag);
codec_name = buf1;
}
switch (enc->codec_type) {
case AVMEDIA_TYPE_VIDEO:
snprintf(buf, buf_size,
"Video: %s%s",
codec_name, enc->mb_decision ? " (hq)" : "");
if (profile)
snprintf(buf + strlen(buf), buf_size - strlen(buf),
" (%s)", profile);
if (enc->codec_tag) {
char tag_buf[32];
av_get_codec_tag_string(tag_buf, sizeof(tag_buf), enc->codec_tag);
snprintf(buf + strlen(buf), buf_size - strlen(buf),
" [%s / 0x%04X]", tag_buf, enc->codec_tag);
}
av_strlcat(buf, "\n ", 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->color_range != AVCOL_RANGE_UNSPECIFIED)
snprintf(buf + strlen(buf), buf_size - strlen(buf), ", %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) {
new_line = 1;
snprintf(buf + strlen(buf), buf_size - strlen(buf), ", %s/%s/%s",
av_color_space_name(enc->colorspace),
av_color_primaries_name(enc->color_primaries),
av_color_transfer_name(enc->color_trc));
}
if (av_log_get_level() >= AV_LOG_DEBUG &&
enc->chroma_sample_location != AVCHROMA_LOC_UNSPECIFIED)
snprintf(buf + strlen(buf), buf_size - strlen(buf), ", %s",
av_chroma_location_name(enc->chroma_sample_location));
if (enc->width) {
av_strlcat(buf, new_line ? "\n " : ", ", 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 * enc->sample_aspect_ratio.num,
enc->height * enc->sample_aspect_ratio.den,
1024 * 1024);
snprintf(buf + strlen(buf), buf_size - strlen(buf),
" [PAR %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);
}
break;
case AVMEDIA_TYPE_AUDIO:
snprintf(buf, buf_size,
"Audio: %s",
codec_name);
if (profile)
snprintf(buf + strlen(buf), buf_size - strlen(buf),
" (%s)", profile);
if (enc->codec_tag) {
char tag_buf[32];
av_get_codec_tag_string(tag_buf, sizeof(tag_buf), enc->codec_tag);
snprintf(buf + strlen(buf), buf_size - strlen(buf),
" [%s / 0x%04X]", tag_buf, enc->codec_tag);
}
av_strlcat(buf, "\n ", 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));
}
break;
case AVMEDIA_TYPE_DATA:
snprintf(buf, buf_size, "Data: %s", codec_name);
break;
case AVMEDIA_TYPE_SUBTITLE:
snprintf(buf, buf_size, "Subtitle: %s", codec_name);
break;
case AVMEDIA_TYPE_ATTACHMENT:
snprintf(buf, buf_size, "Attachment: %s", codec_name);
break;
default:
snprintf(buf, buf_size, "Invalid Codec type %d", enc->codec_type);
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),
", %d kb/s", bitrate / 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)
{
return LIBAVCODEC_VERSION_INT;
}
const char *avcodec_configuration(void)
{
return LIBAV_CONFIGURATION;
}
const char *avcodec_license(void)
{
#define LICENSE_PREFIX "libavcodec license: "
return LICENSE_PREFIX LIBAV_LICENSE + sizeof(LICENSE_PREFIX) - 1;
}
int av_get_exact_bits_per_sample(enum AVCodecID codec_id)
{
switch (codec_id) {
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_WS:
case AV_CODEC_ID_ADPCM_G722:
case AV_CODEC_ID_ADPCM_YAMAHA:
return 4;
case AV_CODEC_ID_PCM_ALAW:
case AV_CODEC_ID_PCM_MULAW:
case AV_CODEC_ID_PCM_S8:
case AV_CODEC_ID_PCM_U8:
case AV_CODEC_ID_PCM_ZORK:
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:
return 32;
case AV_CODEC_ID_PCM_F64BE:
case AV_CODEC_ID_PCM_F64LE:
return 64;
default:
return 0;
}
}
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, int frame_bytes)
{
int bps = av_get_exact_bits_per_sample(id);
/* codecs with an exact constant bits per sample */
if (bps > 0 && ch > 0 && frame_bytes > 0)
return (frame_bytes * 8) / (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_GSM:
case AV_CODEC_ID_QCELP:
case AV_CODEC_ID_RA_144:
case AV_CODEC_ID_RA_288: return 160;
case AV_CODEC_ID_IMC: return 256;
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_ATRAC3: return 1024;
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;
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 (bps > 0) {
/* calc from frame_bytes and bits_per_coded_sample */
if (id == AV_CODEC_ID_ADPCM_G726)
return frame_bytes * 8 / bps;
}
if (ch > 0) {
/* calc from frame_bytes and channels */
switch (id) {
case AV_CODEC_ID_ADPCM_4XM:
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_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));
}
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:
return blocks * (1 + (ba - 4 * ch) / (4 * 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_MS:
return blocks * (2 + (ba - 7 * ch) * 2 / ch);
}
}
if (bps > 0) {
/* calc from frame_bytes, channels, and bits_per_coded_sample */
switch (id) {
case AV_CODEC_ID_PCM_DVD:
return 2 * (frame_bytes / ((bps * 2 / 8) * ch));
case AV_CODEC_ID_PCM_BLURAY:
return frame_bytes / ((FFALIGN(ch, 2) * bps) / 8);
case AV_CODEC_ID_S302M:
return 2 * (frame_bytes / ((bps + 4) / 4)) / ch;
}
}
}
}
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,
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,
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;
}
#if FF_API_MISSING_SAMPLE
FF_DISABLE_DEPRECATION_WARNINGS
void av_log_missing_feature(void *avc, const char *feature, int want_sample)
{
av_log(avc, AV_LOG_WARNING, "%s is not implemented. Update your Libav "
"version to the newest one from Git. If the problem still "
"occurs, it means that your file has a feature which has not "
"been implemented.\n", feature);
if(want_sample)
av_log_ask_for_sample(avc, NULL);
}
void av_log_ask_for_sample(void *avc, const char *msg, ...)
{
va_list argument_list;
va_start(argument_list, msg);
if (msg)
av_vlog(avc, AV_LOG_WARNING, msg, argument_list);
av_log(avc, AV_LOG_WARNING, "If you want to help, upload a sample "
"of this file to ftp://upload.libav.org/incoming/ "
"and contact the libav-devel mailing list.\n");
va_end(argument_list);
}
FF_ENABLE_DEPRECATION_WARNINGS
#endif /* FF_API_MISSING_SAMPLE */
static AVHWAccel *first_hwaccel = NULL;
void av_register_hwaccel(AVHWAccel *hwaccel)
{
AVHWAccel **p = &first_hwaccel;
while (*p)
p = &(*p)->next;
*p = hwaccel;
hwaccel->next = NULL;
}
AVHWAccel *av_hwaccel_next(const AVHWAccel *hwaccel)
{
return hwaccel ? hwaccel->next : first_hwaccel;
}
int av_lockmgr_register(int (*cb)(void **mutex, enum AVLockOp op))
{
if (lockmgr_cb) {
// There is no good way to rollback a failure to destroy the
// mutex, so we ignore failures.
lockmgr_cb(&codec_mutex, AV_LOCK_DESTROY);
lockmgr_cb(&avformat_mutex, AV_LOCK_DESTROY);
lockmgr_cb = NULL;
codec_mutex = NULL;
avformat_mutex = NULL;
}
if (cb) {
void *new_codec_mutex = NULL;
void *new_avformat_mutex = NULL;
int err;
if (err = cb(&new_codec_mutex, AV_LOCK_CREATE)) {
return err > 0 ? AVERROR_UNKNOWN : err;
}
if (err = cb(&new_avformat_mutex, AV_LOCK_CREATE)) {
// Ignore failures to destroy the newly created mutex.
cb(&new_codec_mutex, AV_LOCK_DESTROY);
return err > 0 ? AVERROR_UNKNOWN : err;
}
lockmgr_cb = cb;
codec_mutex = new_codec_mutex;
avformat_mutex = new_avformat_mutex;
}
return 0;
}
int avpriv_lock_avformat(void)
{
if (lockmgr_cb) {
if ((*lockmgr_cb)(&avformat_mutex, AV_LOCK_OBTAIN))
return -1;
}
return 0;
}
int avpriv_unlock_avformat(void)
{
if (lockmgr_cb) {
if ((*lockmgr_cb)(&avformat_mutex, AV_LOCK_RELEASE))
return -1;
}
return 0;
}
unsigned int avpriv_toupper4(unsigned int x)
{
return av_toupper(x & 0xFF) +
(av_toupper((x >> 8) & 0xFF) << 8) +
(av_toupper((x >> 16) & 0xFF) << 16) +
(av_toupper((x >> 24) & 0xFF) << 24);
}
int ff_thread_ref_frame(ThreadFrame *dst, ThreadFrame *src)
{
int ret;
dst->owner = src->owner;
ret = av_frame_ref(dst->f, src->f);
if (ret < 0)
return ret;
if (src->progress &&
!(dst->progress = av_buffer_ref(src->progress))) {
ff_thread_release_buffer(dst->owner, dst);
return AVERROR(ENOMEM);
}
return 0;
}
#if !HAVE_THREADS
int ff_thread_get_buffer(AVCodecContext *avctx, ThreadFrame *f, int flags)
{
f->owner = 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)
{
}
#endif
int avcodec_is_open(AVCodecContext *s)
{
return !!s->internal;
}
const uint8_t *avpriv_find_start_code(const uint8_t *restrict p,
const uint8_t *end,
uint32_t * restrict state)
{
int i;
assert(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;
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 };
}
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->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;
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->initial_padding = codec->initial_padding;
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->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;
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->initial_padding = par->initial_padding;
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;
}
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