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FFmpeg/libavcodec/avcodec.c
Andreas Rheinhardt 20f9727018 avcodec/codec_internal: Add FFCodec, hide internal part of AVCodec 
Up until now, codec.h contains both public and private parts
of AVCodec. This exposes the internals of AVCodec to users
and leads them into the temptation of actually using them
and forces us to forward-declare structures and types that
users can't use at all.

This commit changes this by adding a new structure FFCodec to
codec_internal.h that extends AVCodec, i.e. contains the public
AVCodec as first member; the private fields of AVCodec are moved
to this structure, leaving codec.h clean.

Reviewed-by: Anton Khirnov <anton@khirnov.net>
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
2022-03-21 01:33:09 +01:00

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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/channel_layout.h"
#include "libavutil/imgutils.h"
#include "libavutil/mem.h"
#include "libavutil/opt.h"
#include "libavutil/thread.h"
#include "avcodec.h"
#include "bsf.h"
#include "codec_internal.h"
#include "decode.h"
#include "encode.h"
#include "frame_thread_encoder.h"
#include "internal.h"
#include "thread.h"
#include "version.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 FFCodec *codec)
{
if (!(codec->caps_internal & FF_CODEC_CAP_INIT_THREADSAFE) && codec->init)
ff_mutex_lock(&codec_mutex);
}
static void unlock_avcodec(const FFCodec *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->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;
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_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);
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->in_pkt = av_packet_alloc();
avci->last_pkt_props = av_packet_alloc();
avci->pkt_props = av_fifo_alloc2(1, sizeof(*avci->last_pkt_props),
AV_FIFO_FLAG_AUTO_GROW);
if (!avci->buffer_frame || !avci->buffer_pkt ||
!avci->es.in_frame || !avci->in_pkt ||
!avci->last_pkt_props || !avci->pkt_props) {
ret = AVERROR(ENOMEM);
goto free_and_end;
}
avci->skip_samples_multiplier = 1;
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);
}
}
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->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;
}
#if FF_API_OLD_CHANNEL_LAYOUT
FF_DISABLE_DEPRECATION_WARNINGS
/* compat wrapper for old-style callers */
if (avctx->channel_layout && !avctx->channels)
avctx->channels = av_popcount64(avctx->channel_layout);
if ((avctx->channels > 0 && avctx->ch_layout.nb_channels != avctx->channels) ||
(avctx->channel_layout && (avctx->ch_layout.order != AV_CHANNEL_ORDER_NATIVE ||
avctx->ch_layout.u.mask != avctx->channel_layout))) {
if (avctx->channel_layout) {
av_channel_layout_from_mask(&avctx->ch_layout, avctx->channel_layout);
} else {
avctx->ch_layout.order = AV_CHANNEL_ORDER_UNSPEC;
avctx->ch_layout.nb_channels = avctx->channels;
}
}
FF_ENABLE_DEPRECATION_WARNINGS
#endif
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_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)) {
ret = ff_frame_thread_encoder_init(avctx);
if (ret < 0)
goto free_and_end;
}
if (HAVE_THREADS
&& !(avci->frame_thread_encoder && (avctx->active_thread_type&FF_THREAD_FRAME))) {
/* 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 (av_codec_is_decoder(avctx->codec)) {
if (!avctx->bit_rate)
avctx->bit_rate = get_bit_rate(avctx);
#if FF_API_OLD_CHANNEL_LAYOUT
FF_DISABLE_DEPRECATION_WARNINGS
/* update the deprecated fields for old-style callers */
avctx->channels = avctx->ch_layout.nb_channels;
avctx->channel_layout = avctx->ch_layout.order == AV_CHANNEL_ORDER_NATIVE ?
avctx->ch_layout.u.mask : 0;
/* 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;
}
FF_ENABLE_DEPRECATION_WARNINGS
#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_class)
av_assert0(*(const AVClass **)avctx->priv_data == codec->priv_class);
end:
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;
}
}
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_read(avci->pkt_props, avci->last_pkt_props, 1) >= 0)
av_packet_unref(avci->last_pkt_props);
av_frame_unref(avci->es.in_frame);
av_packet_unref(avci->in_pkt);
if (HAVE_THREADS && avctx->active_thread_type & FF_THREAD_FRAME)
ff_thread_flush(avctx);
else if (ffcodec(avctx->codec)->flush)
ffcodec(avctx->codec)->flush(avctx);
avctx->pts_correction_last_pts =
avctx->pts_correction_last_dts = INT64_MIN;
if (avci->bsf)
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 && 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);
if (avci->pkt_props) {
while (av_fifo_can_read(avci->pkt_props)) {
av_packet_unref(avci->last_pkt_props);
av_fifo_read(avci->pkt_props, avci->last_pkt_props, 1);
}
av_fifo_freep2(&avci->pkt_props);
}
av_packet_free(&avci->last_pkt_props);
av_packet_free(&avci->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_channel_layout_uninit(&avci->initial_ch_layout);
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_FILM_GRAIN)
av_bprintf(&bprint, ", Film Grain");
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);
}
{
char buf[512];
int ret = av_channel_layout_describe(&enc->ch_layout, buf, sizeof(buf));
if (ret >= 0)
av_bprintf(&bprint, "%s", buf);
}
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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