/*
* AVCodecContext functions for libavcodec
*
* 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
* AVCodecContext functions for libavcodec
*/
#include <assert.h>
#include "config.h"
#include "libavutil/avassert.h"
#include "libavutil/avstring.h"
#include "libavutil/bprint.h"
#include "libavutil/channel_layout.h"
#include "libavutil/common.h"
#include "libavutil/emms.h"
#include "libavutil/imgutils.h"
#include "libavutil/mem.h"
#include "libavutil/opt.h"
#include "libavutil/thread.h"
#include "avcodec.h"
#include "avcodec_internal.h"
#include "bsf.h"
#include "codec_desc.h"
#include "codec_internal.h"
#include "decode.h"
#include "frame_thread_encoder.h"
#include "hwconfig.h"
#include "internal.h"
#include "libavutil/refstruct.h"
/**
* Maximum size in bytes of extradata .
* This value was chosen such that every bit of the buffer is
* addressable by a 32 - bit signed integer as used by get_bits .
*/
#define FF_MAX_EXTRADATA_SIZE ((1 << 28 ) - AV_INPUT_BUFFER_PADDING_SIZE)
const SideDataMap ff_sd_global_map[] = {
{ AV_PKT_DATA_REPLAYGAIN , AV_FRAME_DATA_REPLAYGAIN },
{ AV_PKT_DATA_DISPLAYMATRIX, AV_FRAME_DATA_DISPLAYMATRIX },
{ AV_PKT_DATA_SPHERICAL, AV_FRAME_DATA_SPHERICAL },
{ AV_PKT_DATA_STEREO3D, AV_FRAME_DATA_STEREO3D },
{ AV_PKT_DATA_AUDIO_SERVICE_TYPE, AV_FRAME_DATA_AUDIO_SERVICE_TYPE },
{ AV_PKT_DATA_MASTERING_DISPLAY_METADATA, AV_FRAME_DATA_MASTERING_DISPLAY_METADATA },
{ AV_PKT_DATA_CONTENT_LIGHT_LEVEL, AV_FRAME_DATA_CONTENT_LIGHT_LEVEL },
{ AV_PKT_DATA_ICC_PROFILE, AV_FRAME_DATA_ICC_PROFILE },
{ AV_PKT_DATA_AMBIENT_VIEWING_ENVIRONMENT,AV_FRAME_DATA_AMBIENT_VIEWING_ENVIRONMENT },
{ AV_PKT_DATA_3D_REFERENCE_DISPLAYS, AV_FRAME_DATA_3D_REFERENCE_DISPLAYS },
{ AV_PKT_DATA_EXIF, AV_FRAME_DATA_EXIF },
{ AV_PKT_DATA_NB },
};
int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2), void *arg, int *ret, int count, int size)
{
size_t i;
for (i = 0 ; i < count; i++) {
size_t offset = i * size;
int r = func(c, FF_PTR_ADD((char *)arg, offset));
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 ;
}
static AVMutex codec_mutex = AV_MUTEX_INITIALIZER;
static void lock_avcodec(const FFCodec *codec)
{
if (codec->caps_internal & FF_CODEC_CAP_NOT_INIT_THREADSAFE && codec->init)
ff_mutex_lock(&codec_mutex);
}
static void unlock_avcodec(const FFCodec *codec)
{
if (codec->caps_internal & FF_CODEC_CAP_NOT_INIT_THREADSAFE && codec->init)
ff_mutex_unlock(&codec_mutex);
}
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);
if (bits_per_sample) {
bit_rate = ctx->sample_rate * (int64_t)ctx->ch_layout.nb_channels;
if (bit_rate > INT64_MAX / bits_per_sample) {
bit_rate = 0 ;
} else
bit_rate *= bits_per_sample;
} else
bit_rate = ctx->bit_rate;
break ;
default :
bit_rate = 0 ;
break ;
}
return bit_rate;
}
int attribute_align_arg avcodec_open2(AVCodecContext *avctx, const AVCodec *codec, AVDictionary **options)
{
int ret = 0 ;
AVCodecInternal *avci;
const FFCodec *codec2;
const AVDictionaryEntry *e;
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;
codec2 = ffcodec(codec);
if ((avctx->codec_type != AVMEDIA_TYPE_UNKNOWN && avctx->codec_type != codec->type) ||
(avctx->codec_id != AV_CODEC_ID_NONE && avctx->codec_id != codec->id)) {
av_log(avctx, AV_LOG_ERROR, "Codec type or id mismatches\n" );
return AVERROR(EINVAL);
}
avctx->codec_type = codec->type;
avctx->codec_id = codec->id;
avctx->codec = codec;
if (avctx->extradata_size < 0 || avctx->extradata_size >= FF_MAX_EXTRADATA_SIZE)
return AVERROR(EINVAL);
// set the whitelist from provided options dict,
// so we can check it immediately
e = options ? av_dict_get(*options, "codec_whitelist" , NULL, 0 ) : NULL;
if (e) {
ret = av_opt_set(avctx, e->key, e->value, 0 );
if (ret < 0 )
return ret;
}
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);
return AVERROR(EINVAL);
}
avci = ff_codec_is_decoder(codec) ?
ff_decode_internal_alloc() :
ff_encode_internal_alloc();
if (!avci) {
ret = AVERROR(ENOMEM);
goto end;
}
avctx->internal = avci;
avci->buffer_frame = av_frame_alloc();
avci->buffer_pkt = av_packet_alloc();
if (!avci->buffer_frame || !avci->buffer_pkt) {
ret = AVERROR(ENOMEM);
goto free_and_end;
}
if (codec2->priv_data_size > 0 ) {
if (!avctx->priv_data) {
avctx->priv_data = av_mallocz(codec2->priv_data_size);
if (!avctx->priv_data) {
ret = AVERROR(ENOMEM);
goto free_and_end;
}
if (codec->priv_class) {
*(const AVClass **)avctx->priv_data = codec->priv_class;
av_opt_set_defaults(avctx->priv_data);
}
}
} else {
avctx->priv_data = NULL;
}
ret = av_opt_set_dict2(avctx, options, AV_OPT_SEARCH_CHILDREN);
if (ret < 0 )
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 };
}
}
/* AV_CODEC_CAP_CHANNEL_CONF is a decoder-only flag; so the code below
* in particular checks that sample_rate is set for all audio encoders. */
if (avctx->sample_rate < 0 ||
avctx->sample_rate == 0 && avctx->codec_type == AVMEDIA_TYPE_AUDIO &&
!(codec->capabilities & AV_CODEC_CAP_CHANNEL_CONF)) {
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;
}
/* AV_CODEC_CAP_CHANNEL_CONF is a decoder-only flag; so the code below
* in particular checks that nb_channels is set for all audio encoders. */
if (avctx->codec_type == AVMEDIA_TYPE_AUDIO && !avctx->ch_layout.nb_channels
&& !(codec->capabilities & AV_CODEC_CAP_CHANNEL_CONF)) {
av_log(avctx, AV_LOG_ERROR, "%s requires channel layout to be set\n" ,
ff_codec_is_decoder(codec) ? "Decoder" : "Encoder" );
ret = AVERROR(EINVAL);
goto free_and_end;
}
if (avctx->ch_layout.nb_channels && !av_channel_layout_check(&avctx->ch_layout)) {
av_log(avctx, AV_LOG_ERROR, "Invalid channel layout\n" );
ret = AVERROR(EINVAL);
goto free_and_end;
}
if (avctx->ch_layout.nb_channels > FF_SANE_NB_CHANNELS) {
av_log(avctx, AV_LOG_ERROR, "Too many channels: %d\n" , avctx->ch_layout.nb_channels);
ret = AVERROR(EINVAL);
goto free_and_end;
}
avctx->frame_num = 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 = ff_codec_is_encoder(codec) ? "encoder" : "decoder" ;
const 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 = ff_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 (ff_codec_is_encoder(avctx->codec))
ret = ff_encode_preinit(avctx);
else
ret = ff_decode_preinit(avctx);
if (ret < 0 )
goto free_and_end;
if (HAVE_THREADS && !avci->frame_thread_encoder) {
/* Frame-threaded decoders call FFCodec.init for their child contexts. */
lock_avcodec(codec2);
ret = ff_thread_init(avctx);
unlock_avcodec(codec2);
if (ret < 0 ) {
goto free_and_end;
}
}
if (!HAVE_THREADS && !(codec2->caps_internal & FF_CODEC_CAP_AUTO_THREADS))
avctx->thread_count = 1 ;
if (!(avctx->active_thread_type & FF_THREAD_FRAME) ||
avci->frame_thread_encoder) {
if (codec2->init) {
lock_avcodec(codec2);
ret = codec2->init(avctx);
unlock_avcodec(codec2);
if (ret < 0 ) {
avci->needs_close = codec2->caps_internal & FF_CODEC_CAP_INIT_CLEANUP;
goto free_and_end;
}
}
avci->needs_close = 1 ;
}
ret=0 ;
if (ff_codec_is_decoder(avctx->codec)) {
if (!avctx->bit_rate)
avctx->bit_rate = get_bit_rate(avctx);
avci->skip_samples = avctx->delay;
/* validate channel layout from the decoder */
if ((avctx->ch_layout.nb_channels && !av_channel_layout_check(&avctx->ch_layout)) ||
avctx->ch_layout.nb_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 (codec->priv_class)
av_assert0(*(const AVClass **)avctx->priv_data == codec->priv_class);
end:
return ret;
free_and_end:
ff_codec_close(avctx);
goto end;
}
void avcodec_flush_buffers(AVCodecContext *avctx)
{
AVCodecInternal *avci = avctx->internal;
if (av_codec_is_encoder(avctx->codec)) {
int caps = avctx->codec->capabilities;
if (!(caps & AV_CODEC_CAP_ENCODER_FLUSH)) {
// Only encoders that explicitly declare support for it can be
// flushed. Otherwise, this is a no-op.
av_log(avctx, AV_LOG_WARNING, "Ignoring attempt to flush encoder "
"that doesn't support it\n" );
return ;
}
ff_encode_flush_buffers(avctx);
} else
ff_decode_flush_buffers(avctx);
avci->draining = 0 ;
avci->draining_done = 0 ;
if (avci->buffer_frame)
av_frame_unref(avci->buffer_frame);
if (avci->buffer_pkt)
av_packet_unref(avci->buffer_pkt);
if (HAVE_THREADS && avctx->active_thread_type & FF_THREAD_FRAME &&
!avci->is_frame_mt)
ff_thread_flush(avctx);
else if (ffcodec(avctx->codec)->flush)
ffcodec(avctx->codec)->flush(avctx);
}
void avsubtitle_free(AVSubtitle *sub)
{
int i;
for (i = 0 ; i < sub->num_rects; i++) {
AVSubtitleRect *const rect = sub->rects[i];
av_freep(&rect->data[0 ]);
av_freep(&rect->data[1 ]);
av_freep(&rect->data[2 ]);
av_freep(&rect->data[3 ]);
av_freep(&rect->text);
av_freep(&rect->ass);
av_freep(&sub->rects[i]);
}
av_freep(&sub->rects);
memset(sub, 0 , sizeof (*sub));
}
av_cold void ff_codec_close(AVCodecContext *avctx)
{
int i;
if (avcodec_is_open(avctx)) {
AVCodecInternal *avci = avctx->internal;
#if CONFIG_FRAME_THREAD_ENCODER
if (avci->frame_thread_encoder && avctx->thread_count > 1 ) {
ff_frame_thread_encoder_free(avctx);
}
#endif
if (HAVE_THREADS && avci->thread_ctx)
ff_thread_free(avctx);
if (avci->needs_close && ffcodec(avctx->codec)->close)
ffcodec(avctx->codec)->close(avctx);
avci->byte_buffer_size = 0 ;
av_freep(&avci->byte_buffer);
av_frame_free(&avci->buffer_frame);
av_packet_free(&avci->buffer_pkt);
av_packet_free(&avci->last_pkt_props);
av_packet_free(&avci->in_pkt);
av_frame_free(&avci->in_frame);
av_frame_free(&avci->recon_frame);
av_refstruct_unref(&avci->pool);
av_refstruct_pool_uninit(&avci->progress_frame_pool);
if (av_codec_is_decoder(avctx->codec))
ff_decode_internal_uninit(avctx);
ff_hwaccel_uninit(avctx);
av_bsf_free(&avci->bsf);
#if CONFIG_LCMS2
ff_icc_context_uninit(&avci->icc);
#endif
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_frame_side_data_free(&avctx->decoded_side_data,
&avctx->nb_decoded_side_data);
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);
avctx->extradata_size = 0 ;
} else if (av_codec_is_decoder(avctx->codec))
av_freep(&avctx->subtitle_header);
avctx->codec = NULL;
avctx->active_thread_type = 0 ;
}
static const char *unknown_if_null(const char *str)
{
return str ? str : "unknown" ;
}
void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode)
{
const char *codec_type;
const char *codec_name;
const char *profile = NULL;
AVBPrint bprint;
int64_t bitrate;
int new_line = 0 ;
AVRational display_aspect_ratio;
const char *separator = enc->dump_separator ? (const char *)enc->dump_separator : ", " ;
const char *str;
if (!buf || buf_size <= 0 )
return ;
av_bprint_init_for_buffer(&bprint, buf, buf_size);
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);
av_bprintf(&bprint, "%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))
av_bprintf(&bprint, " (%s)" , enc->codec->name);
if (profile)
av_bprintf(&bprint, " (%s)" , profile);
if ( enc->codec_type == AVMEDIA_TYPE_VIDEO
&& av_log_get_level() >= AV_LOG_VERBOSE
&& enc->refs)
av_bprintf(&bprint, ", %d reference frame%s" ,
enc->refs, enc->refs > 1 ? "s" : "" );
if (enc->codec_tag)
av_bprintf(&bprint, " (%s / 0x%04X)" ,
av_fourcc2str(enc->codec_tag), enc->codec_tag);
switch (enc->codec_type) {
case AVMEDIA_TYPE_VIDEO:
{
unsigned len;
av_bprintf(&bprint, "%s%s" , separator,
enc->pix_fmt == AV_PIX_FMT_NONE ? "none" :
unknown_if_null(av_get_pix_fmt_name(enc->pix_fmt)));
av_bprint_chars(&bprint, '(' , 1 );
len = bprint.len;
/* The following check ensures that '(' has been written
* and therefore allows us to erase it if it turns out
* to be unnecessary. */
if (!av_bprint_is_complete(&bprint))
return ;
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_bprintf(&bprint, "%d bpc, " , enc->bits_per_raw_sample);
if (enc->color_range != AVCOL_RANGE_UNSPECIFIED &&
(str = av_color_range_name(enc->color_range)))
av_bprintf(&bprint, "%s, " , str);
if (enc->colorspace != AVCOL_SPC_UNSPECIFIED ||
enc->color_primaries != AVCOL_PRI_UNSPECIFIED ||
enc->color_trc != AVCOL_TRC_UNSPECIFIED) {
const char *col = unknown_if_null(av_color_space_name(enc->colorspace));
const char *pri = unknown_if_null(av_color_primaries_name(enc->color_primaries));
const char *trc = unknown_if_null(av_color_transfer_name(enc->color_trc));
if (strcmp(col, pri) || strcmp(col, trc)) {
new_line = 1 ;
av_bprintf(&bprint, "%s/%s/%s, " , col, pri, trc);
} else
av_bprintf(&bprint, "%s, " , col);
}
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_bprintf(&bprint, "%s, " , field_order);
}
if (av_log_get_level() >= AV_LOG_VERBOSE &&
enc->chroma_sample_location != AVCHROMA_LOC_UNSPECIFIED &&
(str = av_chroma_location_name(enc->chroma_sample_location)))
av_bprintf(&bprint, "%s, " , str);
if (len == bprint.len) {
bprint.str[len - 1 ] = '\0' ;
bprint.len--;
} else {
if (bprint.len - 2 < bprint.size) {
/* Erase the last ", " */
bprint.len -= 2 ;
bprint.str[bprint.len] = '\0' ;
}
av_bprint_chars(&bprint, ')' , 1 );
}
}
if (enc->width) {
av_bprintf(&bprint, "%s%dx%d" , new_line ? separator : ", " ,
enc->width, enc->height);
if (av_log_get_level() >= AV_LOG_VERBOSE &&
enc->coded_width && enc->coded_height &&
(enc->width != enc->coded_width ||
enc->height != enc->coded_height))
av_bprintf(&bprint, " (%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 );
av_bprintf(&bprint, " [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);
av_bprintf(&bprint, ", %d/%d" ,
enc->time_base.num / g, enc->time_base.den / g);
}
}
if (encode) {
av_bprintf(&bprint, ", q=%d-%d" , enc->qmin, enc->qmax);
} else {
#if FF_API_CODEC_PROPS
FF_DISABLE_DEPRECATION_WARNINGS
if (enc->properties & FF_CODEC_PROPERTY_CLOSED_CAPTIONS)
av_bprintf(&bprint, ", Closed Captions" );
if (enc->properties & FF_CODEC_PROPERTY_FILM_GRAIN)
av_bprintf(&bprint, ", Film Grain" );
if (enc->properties & FF_CODEC_PROPERTY_LOSSLESS)
av_bprintf(&bprint, ", lossless" );
FF_ENABLE_DEPRECATION_WARNINGS
#endif
}
break ;
case AVMEDIA_TYPE_AUDIO:
av_bprintf(&bprint, "%s" , separator);
if (enc->sample_rate) {
av_bprintf(&bprint, "%d Hz, " , enc->sample_rate);
}
av_channel_layout_describe_bprint(&enc->ch_layout, &bprint);
if (enc->sample_fmt != AV_SAMPLE_FMT_NONE &&
(str = av_get_sample_fmt_name(enc->sample_fmt))) {
av_bprintf(&bprint, ", %s" , str);
}
if ( enc->bits_per_raw_sample > 0
&& enc->bits_per_raw_sample != av_get_bytes_per_sample(enc->sample_fmt) * 8 )
av_bprintf(&bprint, " (%d bit)" , enc->bits_per_raw_sample);
if (av_log_get_level() >= AV_LOG_VERBOSE) {
if (enc->initial_padding)
av_bprintf(&bprint, ", delay %d" , enc->initial_padding);
if (enc->trailing_padding)
av_bprintf(&bprint, ", 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)
av_bprintf(&bprint, ", %d/%d" ,
enc->time_base.num / g, enc->time_base.den / g);
}
break ;
case AVMEDIA_TYPE_SUBTITLE:
if (enc->width)
av_bprintf(&bprint, ", %dx%d" , enc->width, enc->height);
break ;
default :
return ;
}
if (encode) {
if (enc->flags & AV_CODEC_FLAG_PASS1)
av_bprintf(&bprint, ", pass 1" );
if (enc->flags & AV_CODEC_FLAG_PASS2)
av_bprintf(&bprint, ", pass 2" );
}
bitrate = get_bit_rate(enc);
if (bitrate != 0 ) {
av_bprintf(&bprint, ", %" PRId64" kb/s" , bitrate / 1000 );
} else if (enc->rc_max_rate > 0 ) {
av_bprintf(&bprint, ", max. %" PRId64" kb/s" , enc->rc_max_rate / 1000 );
}
}
int avcodec_is_open(AVCodecContext *s)
{
return !!s->internal;
}
int attribute_align_arg avcodec_receive_frame_flags(AVCodecContext *avctx,
AVFrame *frame, unsigned flags)
{
av_frame_unref(frame);
if (!avcodec_is_open(avctx) || !avctx->codec)
return AVERROR(EINVAL);
if (ff_codec_is_decoder(avctx->codec))
return ff_decode_receive_frame(avctx, frame, flags);
return ff_encode_receive_frame(avctx, frame);
}
int avcodec_receive_frame(AVCodecContext *avctx, AVFrame *frame)
{
return avcodec_receive_frame_flags(avctx, frame, 0 );
}
#define WRAP_CONFIG(allowed_type, field, var, field_type, sentinel_check) \
do { \
if (codec->type != (allowed_type)) \
return AVERROR(EINVAL); \
const field_type *ptr = codec->field; \
*out_configs = ptr; \
if (ptr) { \
for (int i = 0 ;; i++) { \
const field_type var = ptr[i]; \
if (sentinel_check) { \
*out_num_configs = i; \
break ; \
} \
} \
} else \
*out_num_configs = 0 ; \
return 0 ; \
} while (0 )
static const enum AVColorRange color_range_tab[] = {
AVCOL_RANGE_MPEG, AVCOL_RANGE_JPEG, AVCOL_RANGE_UNSPECIFIED,
AVCOL_RANGE_MPEG, AVCOL_RANGE_UNSPECIFIED,
};
static const enum AVAlphaMode alpha_mode_tab[] = {
AVALPHA_MODE_PREMULTIPLIED, AVALPHA_MODE_STRAIGHT, AVALPHA_MODE_UNSPECIFIED,
AVALPHA_MODE_PREMULTIPLIED, AVALPHA_MODE_UNSPECIFIED
};
static_assert((int )AVCOL_RANGE_MPEG == (int )AVALPHA_MODE_PREMULTIPLIED, "unexpected enum values" );
static_assert((int )AVCOL_RANGE_JPEG == (int )AVALPHA_MODE_STRAIGHT, "unexpected enum values" );
static_assert(AVCOL_RANGE_UNSPECIFIED == 0 && AVALPHA_MODE_UNSPECIFIED == 0 , "unexpected enum values" );
static_assert(AVCOL_RANGE_NB == 3 && AVALPHA_MODE_NB == 3 , "unexpected enum values" );
static const uint8_t offset_tab[] = {
[AVCOL_RANGE_MPEG] = 3 ,
[AVCOL_RANGE_JPEG] = 1 ,
[AVCOL_RANGE_MPEG | AVCOL_RANGE_JPEG] = 0 ,
};
int ff_default_get_supported_config(const AVCodecContext *avctx,
const AVCodec *codec,
enum AVCodecConfig config,
unsigned flags,
const void **out_configs,
int *out_num_configs)
{
const FFCodec *codec2 = ffcodec(codec);
switch (config) {
FF_DISABLE_DEPRECATION_WARNINGS
case AV_CODEC_CONFIG_PIX_FORMAT:
WRAP_CONFIG(AVMEDIA_TYPE_VIDEO, pix_fmts, pix_fmt, enum AVPixelFormat, pix_fmt == AV_PIX_FMT_NONE);
case AV_CODEC_CONFIG_FRAME_RATE:
WRAP_CONFIG(AVMEDIA_TYPE_VIDEO, supported_framerates, framerate, AVRational, framerate.num == 0 );
case AV_CODEC_CONFIG_SAMPLE_RATE:
WRAP_CONFIG(AVMEDIA_TYPE_AUDIO, supported_samplerates, samplerate, int , samplerate == 0 );
case AV_CODEC_CONFIG_SAMPLE_FORMAT:
WRAP_CONFIG(AVMEDIA_TYPE_AUDIO, sample_fmts, sample_fmt, enum AVSampleFormat, sample_fmt == AV_SAMPLE_FMT_NONE);
case AV_CODEC_CONFIG_CHANNEL_LAYOUT:
WRAP_CONFIG(AVMEDIA_TYPE_AUDIO, ch_layouts, ch_layout, AVChannelLayout, ch_layout.nb_channels == 0 );
FF_ENABLE_DEPRECATION_WARNINGS
case AV_CODEC_CONFIG_COLOR_RANGE:
if (codec->type != AVMEDIA_TYPE_VIDEO)
return AVERROR(EINVAL);
unsigned color_ranges = codec2->color_ranges;
if (color_ranges)
*out_configs = color_range_tab + offset_tab[color_ranges];
else
*out_configs = NULL;
*out_num_configs = av_popcount(color_ranges);
return 0 ;
case AV_CODEC_CONFIG_COLOR_SPACE:
*out_configs = NULL;
*out_num_configs = 0 ;
return 0 ;
case AV_CODEC_CONFIG_ALPHA_MODE:
if (codec->type != AVMEDIA_TYPE_VIDEO)
return AVERROR(EINVAL);
unsigned alpha_modes = codec2->alpha_modes;
if (alpha_modes)
*out_configs = alpha_mode_tab + offset_tab[alpha_modes];
else
*out_configs = NULL;
*out_num_configs = av_popcount(alpha_modes);
return 0 ;
default :
return AVERROR(EINVAL);
}
}
int avcodec_get_supported_config(const AVCodecContext *avctx, const AVCodec *codec,
enum AVCodecConfig config, unsigned flags,
const void **out, int *out_num)
{
const FFCodec *codec2;
int dummy_num = 0 ;
if (!codec)
codec = avctx->codec;
if (!out_num)
out_num = &dummy_num;
codec2 = ffcodec(codec);
if (codec2->get_supported_config) {
return codec2->get_supported_config(avctx, codec, config, flags, out, out_num);
} else {
return ff_default_get_supported_config(avctx, codec, config, flags, out, out_num);
}
}
int av_packet_side_data_from_frame(AVPacketSideData **psd, int *pnb_sd,
const AVFrameSideData *src, unsigned int flags)
{
AVPacketSideData *sd = NULL;
for (unsigned j = 0 ; ff_sd_global_map[j].packet < AV_PKT_DATA_NB; j++) {
if (ff_sd_global_map[j].frame != src->type)
continue ;
sd = av_packet_side_data_new(psd, pnb_sd, ff_sd_global_map[j].packet,
src->size, 0 );
if (!sd)
return AVERROR(ENOMEM);
memcpy(sd->data, src->data, src->size);
break ;
}
if (!sd)
return AVERROR(EINVAL);
return 0 ;
}
int av_packet_side_data_to_frame(AVFrameSideData ***psd, int *pnb_sd,
const AVPacketSideData *src, unsigned int flags)
{
AVFrameSideData *sd = NULL;
for (unsigned j = 0 ; ff_sd_global_map[j].packet < AV_PKT_DATA_NB; j++) {
if (ff_sd_global_map[j].packet != src->type)
continue ;
sd = av_frame_side_data_new(psd, pnb_sd, ff_sd_global_map[j].frame,
src->size, flags);
if (!sd)
return AVERROR(ENOMEM);
memcpy(sd->data, src->data, src->size);
break ;
}
if (!sd)
return AVERROR(EINVAL);
return 0 ;
}
Messung V0.5 in Prozent C=99 H=87 G=93
¤ Dauer der Verarbeitung: 0.22 Sekunden
(vorverarbeitet am 2026-08-24)
¤
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