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ffmpeg/libavcodec/avcodec.c

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/*
* 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 "config.h"
#include "libavutil/avassert.h"
#include "libavutil/avstring.h"
#include "libavutil/bprint.h"
#include "libavutil/imgutils.h"
#include "libavutil/mem.h"
#include "libavutil/opt.h"
#include "libavutil/thread.h"
#include "avcodec.h"
#include "decode.h"
#include "encode.h"
#include "frame_thread_encoder.h"
#include "internal.h"
#include "thread.h"
#include "libavutil/ffversion.h"
const char av_codec_ffversion[] = "FFmpeg version " FFMPEG_VERSION;
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 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;
}
static AVMutex codec_mutex = AV_MUTEX_INITIALIZER;
static void lock_avcodec(const AVCodec *codec)
{
if (!(codec->caps_internal & FF_CODEC_CAP_INIT_THREADSAFE) && codec->init)
ff_mutex_lock(&codec_mutex);
}
static void unlock_avcodec(const AVCodec *codec)
{
if (!(codec->caps_internal & FF_CODEC_CAP_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->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;
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->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");
return AVERROR(EINVAL);
}
avctx->codec = codec;
if (avctx->extradata_size < 0 || avctx->extradata_size >= FF_MAX_EXTRADATA_SIZE)
return AVERROR(EINVAL);
lock_avcodec(codec);
avci = av_mallocz(sizeof(*avci));
if (!avci) {
ret = AVERROR(ENOMEM);
goto end;
}
avctx->internal = avci;
avci->buffer_frame = av_frame_alloc();
avci->buffer_pkt = av_packet_alloc();
avci->es.in_frame = av_frame_alloc();
avci->ds.in_pkt = av_packet_alloc();
avci->last_pkt_props = av_packet_alloc();
avci->pkt_props = av_fifo_alloc(sizeof(*avci->last_pkt_props));
if (!avci->buffer_frame || !avci->buffer_pkt ||
!avci->es.in_frame || !avci->ds.in_pkt ||
!avci->last_pkt_props || !avci->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 free_and_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, options)) < 0)
goto free_and_end;
} else {
avctx->priv_data = NULL;
}
if ((ret = av_opt_set_dict(avctx, options)) < 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 (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->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";
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 = 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 (av_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)
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)) {
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);
lock_avcodec(codec);
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->caps_internal & FF_CODEC_CAP_AUTO_THREADS))
avctx->thread_count = 1;
if (!(avctx->active_thread_type & FF_THREAD_FRAME) ||
avci->frame_thread_encoder) {
if (avctx->codec->init) {
ret = avctx->codec->init(avctx);
if (ret < 0) {
avci->needs_close = avctx->codec->caps_internal & FF_CODEC_CAP_INIT_CLEANUP;
goto free_and_end;
}
}
avci->needs_close = 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 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:
unlock_avcodec(codec);
return ret;
free_and_end:
avcodec_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;
}
// We haven't implemented flushing for frame-threaded encoders.
av_assert0(!(caps & AV_CODEC_CAP_FRAME_THREADS));
}
avci->draining = 0;
avci->draining_done = 0;
avci->nb_draining_errors = 0;
av_frame_unref(avci->buffer_frame);
av_packet_unref(avci->buffer_pkt);
av_packet_unref(avci->last_pkt_props);
while (av_fifo_size(avci->pkt_props) >= sizeof(*avci->last_pkt_props)) {
av_fifo_generic_read(avci->pkt_props,
avci->last_pkt_props, sizeof(*avci->last_pkt_props),
NULL);
av_packet_unref(avci->last_pkt_props);
}
av_fifo_reset(avci->pkt_props);
av_frame_unref(avci->es.in_frame);
av_packet_unref(avci->ds.in_pkt);
if (HAVE_THREADS && avctx->active_thread_type & FF_THREAD_FRAME)
ff_thread_flush(avctx);
else if (avctx->codec->flush)
avctx->codec->flush(avctx);
avctx->pts_correction_last_pts =
avctx->pts_correction_last_dts = INT64_MIN;
if (av_codec_is_decoder(avctx->codec))
av_bsf_flush(avci->bsf);
}
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)) {
AVCodecInternal *avci = avctx->internal;
if (CONFIG_FRAME_THREAD_ENCODER &&
avci->frame_thread_encoder && avctx->thread_count > 1) {
ff_frame_thread_encoder_free(avctx);
}
if (HAVE_THREADS && avci->thread_ctx)
ff_thread_free(avctx);
if (avci->needs_close && avctx->codec->close)
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);
if (avci->pkt_props) {
while (av_fifo_size(avci->pkt_props) >= sizeof(*avci->last_pkt_props)) {
av_packet_unref(avci->last_pkt_props);
av_fifo_generic_read(avci->pkt_props, avci->last_pkt_props,
sizeof(*avci->last_pkt_props), NULL);
}
av_fifo_freep(&avci->pkt_props);
}
av_packet_free(&avci->last_pkt_props);
av_packet_free(&avci->ds.in_pkt);
av_frame_free(&avci->es.in_frame);
av_buffer_unref(&avci->pool);
if (avctx->hwaccel && avctx->hwaccel->uninit)
avctx->hwaccel->uninit(avctx);
av_freep(&avci->hwaccel_priv_data);
av_bsf_free(&avci->bsf);
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);
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;
return 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->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 (enc->properties & FF_CODEC_PROPERTY_CLOSED_CAPTIONS)
av_bprintf(&bprint, ", Closed Captions");
if (enc->properties & FF_CODEC_PROPERTY_LOSSLESS)
av_bprintf(&bprint, ", lossless");
}
break;
case AVMEDIA_TYPE_AUDIO:
av_bprintf(&bprint, "%s", separator);
if (enc->sample_rate) {
av_bprintf(&bprint, "%d Hz, ", enc->sample_rate);
}
av_bprint_channel_layout(&bprint, enc->channels, enc->channel_layout);
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;
}
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