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avcodec: move core AVCodecContext functions from util.c to a new file 

Signed-off-by: James Almer <jamrial@gmail.com>
tags/n4.4
James Almer 4 years ago
parent
4057a060f6
commit
f47d7a3b42
4 changed files with 850 additions and 826 deletions
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  1. +1
    -1
      Makefile
  2. +1
    -0
      libavcodec/Makefile
  3. +845
    -0
      libavcodec/avcodec.c
  4. +3
    -825
      libavcodec/utils.c

+ 1
- 1
Makefile View File

@@ -110,7 +110,7 @@ include $(SRC_PATH)/fftools/Makefile
include $(SRC_PATH)/doc/Makefile include $(SRC_PATH)/doc/Makefile
include $(SRC_PATH)/doc/examples/Makefile include $(SRC_PATH)/doc/examples/Makefile


libavcodec/utils.o libavformat/utils.o libavdevice/avdevice.o libavfilter/avfilter.o libavutil/utils.o libpostproc/postprocess.o libswresample/swresample.o libswscale/utils.o : libavutil/ffversion.h
libavcodec/avcodec.o libavformat/utils.o libavdevice/avdevice.o libavfilter/avfilter.o libavutil/utils.o libpostproc/postprocess.o libswresample/swresample.o libswscale/utils.o : libavutil/ffversion.h


$(PROGS): %$(PROGSSUF)$(EXESUF): %$(PROGSSUF)_g$(EXESUF) $(PROGS): %$(PROGSSUF)$(EXESUF): %$(PROGSSUF)_g$(EXESUF)
ifeq ($(STRIPTYPE),direct) ifeq ($(STRIPTYPE),direct)


+ 1
- 0
libavcodec/Makefile View File

@@ -29,6 +29,7 @@ HEADERS = ac3_parser.h \
OBJS = ac3_parser.o \ OBJS = ac3_parser.o \
adts_parser.o \ adts_parser.o \
allcodecs.o \ allcodecs.o \
avcodec.o \
avdct.o \ avdct.o \
avpacket.o \ avpacket.o \
avpicture.o \ avpicture.o \


+ 845
- 0
libavcodec/avcodec.c View File

@@ -0,0 +1,845 @@
/*
* 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/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"
#if CONFIG_ICONV
# include <iconv.h>
#endif

#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);
}

#if FF_API_LOCKMGR
int av_lockmgr_register(int (*cb)(void **mutex, enum AVLockOp op))
{
return 0;
}
#endif

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;
int codec_init_ok = 0;
AVDictionary *tmp = NULL;
AVCodecInternal *avci;

if (avcodec_is_open(avctx))
return 0;

if (!codec && !avctx->codec) {
av_log(avctx, AV_LOG_ERROR, "No codec provided to avcodec_open2()\n");
return AVERROR(EINVAL);
}
if (codec && avctx->codec && codec != avctx->codec) {
av_log(avctx, AV_LOG_ERROR, "This AVCodecContext was allocated for %s, "
"but %s passed to avcodec_open2()\n", avctx->codec->name, codec->name);
return AVERROR(EINVAL);
}
if (!codec)
codec = avctx->codec;

if (avctx->extradata_size < 0 || avctx->extradata_size >= FF_MAX_EXTRADATA_SIZE)
return AVERROR(EINVAL);

if (options)
av_dict_copy(&tmp, *options, 0);

lock_avcodec(codec);

avci = av_mallocz(sizeof(*avci));
if (!avci) {
ret = AVERROR(ENOMEM);
goto end;
}
avctx->internal = avci;

#if FF_API_OLD_ENCDEC
avci->to_free = av_frame_alloc();
avci->compat_decode_frame = av_frame_alloc();
avci->compat_encode_packet = av_packet_alloc();
if (!avci->to_free || !avci->compat_decode_frame || !avci->compat_encode_packet) {
ret = AVERROR(ENOMEM);
goto free_and_end;
}
#endif
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, &tmp)) < 0)
goto free_and_end;
} else {
avctx->priv_data = NULL;
}
if ((ret = av_opt_set_dict(avctx, &tmp)) < 0)
goto free_and_end;

if (avctx->codec_whitelist && av_match_list(codec->name, avctx->codec_whitelist, ',') <= 0) {
av_log(avctx, AV_LOG_ERROR, "Codec (%s) not on whitelist \'%s\'\n", codec->name, avctx->codec_whitelist);
ret = AVERROR(EINVAL);
goto free_and_end;
}

// only call ff_set_dimensions() for non H.264/VP6F/DXV codecs so as not to overwrite previously setup dimensions
if (!(avctx->coded_width && avctx->coded_height && avctx->width && avctx->height &&
(avctx->codec_id == AV_CODEC_ID_H264 || avctx->codec_id == AV_CODEC_ID_VP6F || avctx->codec_id == AV_CODEC_ID_DXV))) {
if (avctx->coded_width && avctx->coded_height)
ret = ff_set_dimensions(avctx, avctx->coded_width, avctx->coded_height);
else if (avctx->width && avctx->height)
ret = ff_set_dimensions(avctx, avctx->width, avctx->height);
if (ret < 0)
goto free_and_end;
}

if ((avctx->coded_width || avctx->coded_height || avctx->width || avctx->height)
&& ( av_image_check_size2(avctx->coded_width, avctx->coded_height, avctx->max_pixels, AV_PIX_FMT_NONE, 0, avctx) < 0
|| av_image_check_size2(avctx->width, avctx->height, avctx->max_pixels, AV_PIX_FMT_NONE, 0, avctx) < 0)) {
av_log(avctx, AV_LOG_WARNING, "Ignoring invalid width/height values\n");
ff_set_dimensions(avctx, 0, 0);
}

if (avctx->width > 0 && avctx->height > 0) {
if (av_image_check_sar(avctx->width, avctx->height,
avctx->sample_aspect_ratio) < 0) {
av_log(avctx, AV_LOG_WARNING, "ignoring invalid SAR: %u/%u\n",
avctx->sample_aspect_ratio.num,
avctx->sample_aspect_ratio.den);
avctx->sample_aspect_ratio = (AVRational){ 0, 1 };
}
}

if (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 (av_codec_is_decoder(codec) &&
codec->type == AVMEDIA_TYPE_AUDIO &&
!(codec->capabilities & AV_CODEC_CAP_CHANNEL_CONF) &&
avctx->channels == 0) {
av_log(avctx, AV_LOG_ERROR, "Decoder requires channel count but channels not set\n");
ret = AVERROR(EINVAL);
goto free_and_end;
}

if (avctx->sample_rate < 0) {
av_log(avctx, AV_LOG_ERROR, "Invalid sample rate: %d\n", avctx->sample_rate);
ret = AVERROR(EINVAL);
goto free_and_end;
}
if (avctx->block_align < 0) {
av_log(avctx, AV_LOG_ERROR, "Invalid block align: %d\n", avctx->block_align);
ret = AVERROR(EINVAL);
goto free_and_end;
}

avctx->codec = codec;
if ((avctx->codec_type == AVMEDIA_TYPE_UNKNOWN || avctx->codec_type == codec->type) &&
avctx->codec_id == AV_CODEC_ID_NONE) {
avctx->codec_type = codec->type;
avctx->codec_id = codec->id;
}
if (avctx->codec_id != codec->id || (avctx->codec_type != codec->type
&& avctx->codec_type != AVMEDIA_TYPE_ATTACHMENT)) {
av_log(avctx, AV_LOG_ERROR, "Codec type or id mismatches\n");
ret = AVERROR(EINVAL);
goto free_and_end;
}
avctx->frame_number = 0;
avctx->codec_descriptor = avcodec_descriptor_get(avctx->codec_id);

if ((avctx->codec->capabilities & AV_CODEC_CAP_EXPERIMENTAL) &&
avctx->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
const char *codec_string = av_codec_is_encoder(codec) ? "encoder" : "decoder";
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 (!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, options ? *options : NULL);
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 (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 ( avctx->codec->init && (!(avctx->active_thread_type&FF_THREAD_FRAME)
|| avci->frame_thread_encoder)) {
ret = avctx->codec->init(avctx);
if (ret < 0) {
codec_init_ok = -1;
goto free_and_end;
}
codec_init_ok = 1;
}

ret=0;

if (av_codec_is_decoder(avctx->codec)) {
if (!avctx->bit_rate)
avctx->bit_rate = get_bit_rate(avctx);
/* validate channel layout from the decoder */
if (avctx->channel_layout) {
int channels = av_get_channel_layout_nb_channels(avctx->channel_layout);
if (!avctx->channels)
avctx->channels = channels;
else if (channels != avctx->channels) {
char buf[512];
av_get_channel_layout_string(buf, sizeof(buf), -1, avctx->channel_layout);
av_log(avctx, AV_LOG_WARNING,
"Channel layout '%s' with %d channels does not match specified number of channels %d: "
"ignoring specified channel layout\n",
buf, channels, avctx->channels);
avctx->channel_layout = 0;
}
}
if (avctx->channels && avctx->channels < 0 ||
avctx->channels > FF_SANE_NB_CHANNELS) {
ret = AVERROR(EINVAL);
goto free_and_end;
}
if (avctx->bits_per_coded_sample < 0) {
ret = AVERROR(EINVAL);
goto free_and_end;
}
if (avctx->sub_charenc) {
if (avctx->codec_type != AVMEDIA_TYPE_SUBTITLE) {
av_log(avctx, AV_LOG_ERROR, "Character encoding is only "
"supported with subtitles codecs\n");
ret = AVERROR(EINVAL);
goto free_and_end;
} else if (avctx->codec_descriptor->props & AV_CODEC_PROP_BITMAP_SUB) {
av_log(avctx, AV_LOG_WARNING, "Codec '%s' is bitmap-based, "
"subtitles character encoding will be ignored\n",
avctx->codec_descriptor->name);
avctx->sub_charenc_mode = FF_SUB_CHARENC_MODE_DO_NOTHING;
} else {
/* input character encoding is set for a text based subtitle
* codec at this point */
if (avctx->sub_charenc_mode == FF_SUB_CHARENC_MODE_AUTOMATIC)
avctx->sub_charenc_mode = FF_SUB_CHARENC_MODE_PRE_DECODER;

if (avctx->sub_charenc_mode == FF_SUB_CHARENC_MODE_PRE_DECODER) {
#if CONFIG_ICONV
iconv_t cd = iconv_open("UTF-8", avctx->sub_charenc);
if (cd == (iconv_t)-1) {
ret = AVERROR(errno);
av_log(avctx, AV_LOG_ERROR, "Unable to open iconv context "
"with input character encoding \"%s\"\n", avctx->sub_charenc);
goto free_and_end;
}
iconv_close(cd);
#else
av_log(avctx, AV_LOG_ERROR, "Character encoding subtitles "
"conversion needs a libavcodec built with iconv support "
"for this codec\n");
ret = AVERROR(ENOSYS);
goto free_and_end;
#endif
}
}
}

#if FF_API_AVCTX_TIMEBASE
if (avctx->framerate.num > 0 && avctx->framerate.den > 0)
avctx->time_base = av_inv_q(av_mul_q(avctx->framerate, (AVRational){avctx->ticks_per_frame, 1}));
#endif
}
if (codec->priv_data_size > 0 && avctx->priv_data && codec->priv_class) {
av_assert0(*(const AVClass **)avctx->priv_data == codec->priv_class);
}

end:
unlock_avcodec(codec);
if (options) {
av_dict_free(options);
*options = tmp;
}

return ret;
free_and_end:
if (avctx->codec && avctx->codec->close &&
(codec_init_ok > 0 || (codec_init_ok < 0 &&
avctx->codec->caps_internal & FF_CODEC_CAP_INIT_CLEANUP)))
avctx->codec->close(avctx);

if (HAVE_THREADS && avci->thread_ctx)
ff_thread_free(avctx);

if (codec->priv_class && avctx->priv_data)
av_opt_free(avctx->priv_data);
av_opt_free(avctx);

if (av_codec_is_encoder(avctx->codec)) {
#if FF_API_CODED_FRAME
FF_DISABLE_DEPRECATION_WARNINGS
av_frame_free(&avctx->coded_frame);
FF_ENABLE_DEPRECATION_WARNINGS
#endif
av_freep(&avctx->extradata);
avctx->extradata_size = 0;
}

av_dict_free(&tmp);
av_freep(&avctx->priv_data);
av_freep(&avctx->subtitle_header);

#if FF_API_OLD_ENCDEC
av_frame_free(&avci->to_free);
av_frame_free(&avci->compat_decode_frame);
av_packet_free(&avci->compat_encode_packet);
#endif
av_frame_free(&avci->buffer_frame);
av_packet_free(&avci->buffer_pkt);
av_packet_free(&avci->last_pkt_props);
av_fifo_freep(&avci->pkt_props);

av_packet_free(&avci->ds.in_pkt);
av_frame_free(&avci->es.in_frame);
av_bsf_free(&avci->bsf);

av_buffer_unref(&avci->pool);
av_freep(&avci);
avctx->internal = NULL;
avctx->codec = NULL;
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);
#if FF_API_OLD_ENCDEC
av_frame_unref(avci->compat_decode_frame);
av_packet_unref(avci->compat_encode_packet);
#endif
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);

#if FF_API_OLD_ENCDEC
FF_DISABLE_DEPRECATION_WARNINGS
if (!avctx->refcounted_frames)
av_frame_unref(avci->to_free);
FF_ENABLE_DEPRECATION_WARNINGS
#endif
}

void avsubtitle_free(AVSubtitle *sub)
{
int i;

for (i = 0; i < sub->num_rects; i++) {
av_freep(&sub->rects[i]->data[0]);
av_freep(&sub->rects[i]->data[1]);
av_freep(&sub->rects[i]->data[2]);
av_freep(&sub->rects[i]->data[3]);
av_freep(&sub->rects[i]->text);
av_freep(&sub->rects[i]->ass);
av_freep(&sub->rects[i]);
}

av_freep(&sub->rects);

memset(sub, 0, sizeof(*sub));
}

av_cold int avcodec_close(AVCodecContext *avctx)
{
int i;

if (!avctx)
return 0;

if (avcodec_is_open(avctx)) {
if (CONFIG_FRAME_THREAD_ENCODER &&
avctx->internal->frame_thread_encoder && avctx->thread_count > 1) {
ff_frame_thread_encoder_free(avctx);
}
if (HAVE_THREADS && avctx->internal->thread_ctx)
ff_thread_free(avctx);
if (avctx->codec && avctx->codec->close)
avctx->codec->close(avctx);
avctx->internal->byte_buffer_size = 0;
av_freep(&avctx->internal->byte_buffer);
#if FF_API_OLD_ENCDEC
av_frame_free(&avctx->internal->to_free);
av_frame_free(&avctx->internal->compat_decode_frame);
av_packet_free(&avctx->internal->compat_encode_packet);
#endif
av_frame_free(&avctx->internal->buffer_frame);
av_packet_free(&avctx->internal->buffer_pkt);
av_packet_unref(avctx->internal->last_pkt_props);
while (av_fifo_size(avctx->internal->pkt_props) >=
sizeof(*avctx->internal->last_pkt_props)) {
av_fifo_generic_read(avctx->internal->pkt_props,
avctx->internal->last_pkt_props,
sizeof(*avctx->internal->last_pkt_props),
NULL);
av_packet_unref(avctx->internal->last_pkt_props);
}
av_packet_free(&avctx->internal->last_pkt_props);
av_fifo_freep(&avctx->internal->pkt_props);

av_packet_free(&avctx->internal->ds.in_pkt);
av_frame_free(&avctx->internal->es.in_frame);

av_buffer_unref(&avctx->internal->pool);

if (avctx->hwaccel && avctx->hwaccel->uninit)
avctx->hwaccel->uninit(avctx);
av_freep(&avctx->internal->hwaccel_priv_data);

av_bsf_free(&avctx->internal->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);
#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;
}

void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode)
{
const char *codec_type;
const char *codec_name;
const char *profile = NULL;
int64_t bitrate;
int new_line = 0;
AVRational display_aspect_ratio;
const char *separator = enc->dump_separator ? (const char *)enc->dump_separator : ", ";

if (!buf || buf_size <= 0)
return;
codec_type = av_get_media_type_string(enc->codec_type);
codec_name = avcodec_get_name(enc->codec_id);
profile = avcodec_profile_name(enc->codec_id, enc->profile);

snprintf(buf, buf_size, "%s: %s", codec_type ? codec_type : "unknown",
codec_name);
buf[0] ^= 'a' ^ 'A'; /* first letter in uppercase */

if (enc->codec && strcmp(enc->codec->name, codec_name))
snprintf(buf + strlen(buf), buf_size - strlen(buf), " (%s)", enc->codec->name);

if (profile)
snprintf(buf + strlen(buf), buf_size - strlen(buf), " (%s)", profile);
if ( enc->codec_type == AVMEDIA_TYPE_VIDEO
&& av_log_get_level() >= AV_LOG_VERBOSE
&& enc->refs)
snprintf(buf + strlen(buf), buf_size - strlen(buf),
", %d reference frame%s",
enc->refs, enc->refs > 1 ? "s" : "");

if (enc->codec_tag)
snprintf(buf + strlen(buf), buf_size - strlen(buf), " (%s / 0x%04X)",
av_fourcc2str(enc->codec_tag), enc->codec_tag);

switch (enc->codec_type) {
case AVMEDIA_TYPE_VIDEO:
{
char detail[256] = "(";

av_strlcat(buf, separator, buf_size);

snprintf(buf + strlen(buf), buf_size - strlen(buf),
"%s", enc->pix_fmt == AV_PIX_FMT_NONE ? "none" :
av_get_pix_fmt_name(enc->pix_fmt));
if (enc->bits_per_raw_sample && enc->pix_fmt != AV_PIX_FMT_NONE &&
enc->bits_per_raw_sample < av_pix_fmt_desc_get(enc->pix_fmt)->comp[0].depth)
av_strlcatf(detail, sizeof(detail), "%d bpc, ", enc->bits_per_raw_sample);
if (enc->color_range != AVCOL_RANGE_UNSPECIFIED)
av_strlcatf(detail, sizeof(detail), "%s, ",
av_color_range_name(enc->color_range));

if (enc->colorspace != AVCOL_SPC_UNSPECIFIED ||
enc->color_primaries != AVCOL_PRI_UNSPECIFIED ||
enc->color_trc != AVCOL_TRC_UNSPECIFIED) {
if (enc->colorspace != (int)enc->color_primaries ||
enc->colorspace != (int)enc->color_trc) {
new_line = 1;
av_strlcatf(detail, sizeof(detail), "%s/%s/%s, ",
av_color_space_name(enc->colorspace),
av_color_primaries_name(enc->color_primaries),
av_color_transfer_name(enc->color_trc));
} else
av_strlcatf(detail, sizeof(detail), "%s, ",
av_get_colorspace_name(enc->colorspace));
}

if (enc->field_order != AV_FIELD_UNKNOWN) {
const char *field_order = "progressive";
if (enc->field_order == AV_FIELD_TT)
field_order = "top first";
else if (enc->field_order == AV_FIELD_BB)
field_order = "bottom first";
else if (enc->field_order == AV_FIELD_TB)
field_order = "top coded first (swapped)";
else if (enc->field_order == AV_FIELD_BT)
field_order = "bottom coded first (swapped)";

av_strlcatf(detail, sizeof(detail), "%s, ", field_order);
}

if (av_log_get_level() >= AV_LOG_VERBOSE &&
enc->chroma_sample_location != AVCHROMA_LOC_UNSPECIFIED)
av_strlcatf(detail, sizeof(detail), "%s, ",
av_chroma_location_name(enc->chroma_sample_location));

if (strlen(detail) > 1) {
detail[strlen(detail) - 2] = 0;
av_strlcatf(buf, buf_size, "%s)", detail);
}
}

if (enc->width) {
av_strlcat(buf, new_line ? separator : ", ", buf_size);

snprintf(buf + strlen(buf), buf_size - strlen(buf),
"%dx%d",
enc->width, enc->height);

if (av_log_get_level() >= AV_LOG_VERBOSE &&
(enc->width != enc->coded_width ||
enc->height != enc->coded_height))
snprintf(buf + strlen(buf), buf_size - strlen(buf),
" (%dx%d)", enc->coded_width, enc->coded_height);

if (enc->sample_aspect_ratio.num) {
av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,
enc->width * (int64_t)enc->sample_aspect_ratio.num,
enc->height * (int64_t)enc->sample_aspect_ratio.den,
1024 * 1024);
snprintf(buf + strlen(buf), buf_size - strlen(buf),
" [SAR %d:%d DAR %d:%d]",
enc->sample_aspect_ratio.num, enc->sample_aspect_ratio.den,
display_aspect_ratio.num, display_aspect_ratio.den);
}
if (av_log_get_level() >= AV_LOG_DEBUG) {
int g = av_gcd(enc->time_base.num, enc->time_base.den);
snprintf(buf + strlen(buf), buf_size - strlen(buf),
", %d/%d",
enc->time_base.num / g, enc->time_base.den / g);
}
}
if (encode) {
snprintf(buf + strlen(buf), buf_size - strlen(buf),
", q=%d-%d", enc->qmin, enc->qmax);
} else {
if (enc->properties & FF_CODEC_PROPERTY_CLOSED_CAPTIONS)
snprintf(buf + strlen(buf), buf_size - strlen(buf),
", Closed Captions");
if (enc->properties & FF_CODEC_PROPERTY_LOSSLESS)
snprintf(buf + strlen(buf), buf_size - strlen(buf),
", lossless");
}
break;
case AVMEDIA_TYPE_AUDIO:
av_strlcat(buf, separator, buf_size);

if (enc->sample_rate) {
snprintf(buf + strlen(buf), buf_size - strlen(buf),
"%d Hz, ", enc->sample_rate);
}
av_get_channel_layout_string(buf + strlen(buf), buf_size - strlen(buf), enc->channels, enc->channel_layout);
if (enc->sample_fmt != AV_SAMPLE_FMT_NONE) {
snprintf(buf + strlen(buf), buf_size - strlen(buf),
", %s", av_get_sample_fmt_name(enc->sample_fmt));
}
if ( enc->bits_per_raw_sample > 0
&& enc->bits_per_raw_sample != av_get_bytes_per_sample(enc->sample_fmt) * 8)
snprintf(buf + strlen(buf), buf_size - strlen(buf),
" (%d bit)", enc->bits_per_raw_sample);
if (av_log_get_level() >= AV_LOG_VERBOSE) {
if (enc->initial_padding)
snprintf(buf + strlen(buf), buf_size - strlen(buf),
", delay %d", enc->initial_padding);
if (enc->trailing_padding)
snprintf(buf + strlen(buf), buf_size - strlen(buf),
", padding %d", enc->trailing_padding);
}
break;
case AVMEDIA_TYPE_DATA:
if (av_log_get_level() >= AV_LOG_DEBUG) {
int g = av_gcd(enc->time_base.num, enc->time_base.den);
if (g)
snprintf(buf + strlen(buf), buf_size - strlen(buf),
", %d/%d",
enc->time_base.num / g, enc->time_base.den / g);
}
break;
case AVMEDIA_TYPE_SUBTITLE:
if (enc->width)
snprintf(buf + strlen(buf), buf_size - strlen(buf),
", %dx%d", enc->width, enc->height);
break;
default:
return;
}
if (encode) {
if (enc->flags & AV_CODEC_FLAG_PASS1)
snprintf(buf + strlen(buf), buf_size - strlen(buf),
", pass 1");
if (enc->flags & AV_CODEC_FLAG_PASS2)
snprintf(buf + strlen(buf), buf_size - strlen(buf),
", pass 2");
}
bitrate = get_bit_rate(enc);
if (bitrate != 0) {
snprintf(buf + strlen(buf), buf_size - strlen(buf),
", %"PRId64" kb/s", bitrate / 1000);
} else if (enc->rc_max_rate > 0) {
snprintf(buf + strlen(buf), buf_size - strlen(buf),
", max. %"PRId64" kb/s", enc->rc_max_rate / 1000);
}
}

int avcodec_is_open(AVCodecContext *s)
{
return !!s->internal;
}

+ 3
- 825
libavcodec/utils.c View File

@@ -26,48 +26,26 @@
*/ */


#include "config.h" #include "config.h"
#include "libavutil/attributes.h"
#include "libavutil/avassert.h" #include "libavutil/avassert.h"
#include "libavutil/avstring.h" #include "libavutil/avstring.h"
#include "libavutil/bprint.h"
#include "libavutil/channel_layout.h"
#include "libavutil/crc.h"
#include "libavutil/frame.h"
#include "libavutil/hwcontext.h"
#include "libavutil/internal.h"
#include "libavutil/mathematics.h"
#include "libavutil/intreadwrite.h"
#include "libavutil/mem_internal.h" #include "libavutil/mem_internal.h"
#include "libavutil/pixdesc.h" #include "libavutil/pixdesc.h"
#include "libavutil/imgutils.h" #include "libavutil/imgutils.h"
#include "libavutil/samplefmt.h"
#include "libavutil/dict.h"
#include "libavutil/thread.h"
#include "libavutil/pixfmt.h"
#include "avcodec.h" #include "avcodec.h"
#include "decode.h"
#include "encode.h"
#include "codec.h"
#include "hwconfig.h" #include "hwconfig.h"
#include "libavutil/opt.h"
#include "mpegvideo.h"
#include "thread.h" #include "thread.h"
#include "frame_thread_encoder.h"
#include "internal.h" #include "internal.h"
#include "put_bits.h" #include "put_bits.h"
#include "raw.h" #include "raw.h"
#include "bytestream.h"
#include "version.h" #include "version.h"
#include <stdlib.h> #include <stdlib.h>
#include <stdarg.h> #include <stdarg.h>
#include <stdatomic.h> #include <stdatomic.h>
#include <limits.h> #include <limits.h>
#include <float.h> #include <float.h>
#if CONFIG_ICONV
# include <iconv.h>
#endif

#include "libavutil/ffversion.h"
const char av_codec_ffversion[] = "FFmpeg version " FFMPEG_VERSION;

static AVMutex codec_mutex = AV_MUTEX_INITIALIZER;


void av_fast_padded_malloc(void *ptr, unsigned int *size, size_t min_size) void av_fast_padded_malloc(void *ptr, unsigned int *size, size_t min_size)
{ {
@@ -440,32 +418,6 @@ void ff_color_frame(AVFrame *frame, const int c[4])
} }
} }


int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2), void *arg, int *ret, int count, int size)
{
int i;

for (i = 0; i < count; i++) {
int r = func(c, (char *)arg + i * size);
if (ret)
ret[i] = r;
}
emms_c();
return 0;
}

int avcodec_default_execute2(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2, int jobnr, int threadnr), void *arg, int *ret, int count)
{
int i;

for (i = 0; i < count; i++) {
int r = func(c, arg, i, 0);
if (ret)
ret[i] = r;
}
emms_c();
return 0;
}

enum AVPixelFormat avpriv_find_pix_fmt(const PixelFormatTag *tags, enum AVPixelFormat avpriv_find_pix_fmt(const PixelFormatTag *tags,
unsigned int fourcc) unsigned int fourcc)
{ {
@@ -499,552 +451,6 @@ int avpriv_codec_get_cap_skip_frame_fill_param(const AVCodec *codec){
return !!(codec->caps_internal & FF_CODEC_CAP_SKIP_FRAME_FILL_PARAM); return !!(codec->caps_internal & FF_CODEC_CAP_SKIP_FRAME_FILL_PARAM);
} }


static int64_t get_bit_rate(AVCodecContext *ctx)
{
int64_t bit_rate;
int bits_per_sample;

switch (ctx->codec_type) {
case AVMEDIA_TYPE_VIDEO:
case AVMEDIA_TYPE_DATA:
case AVMEDIA_TYPE_SUBTITLE:
case AVMEDIA_TYPE_ATTACHMENT:
bit_rate = ctx->bit_rate;
break;
case AVMEDIA_TYPE_AUDIO:
bits_per_sample = av_get_bits_per_sample(ctx->codec_id);
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;
}


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);
}

int attribute_align_arg avcodec_open2(AVCodecContext *avctx, const AVCodec *codec, AVDictionary **options)
{
int ret = 0;
int codec_init_ok = 0;
AVDictionary *tmp = NULL;
AVCodecInternal *avci;

if (avcodec_is_open(avctx))
return 0;

if (!codec && !avctx->codec) {
av_log(avctx, AV_LOG_ERROR, "No codec provided to avcodec_open2()\n");
return AVERROR(EINVAL);
}
if (codec && avctx->codec && codec != avctx->codec) {
av_log(avctx, AV_LOG_ERROR, "This AVCodecContext was allocated for %s, "
"but %s passed to avcodec_open2()\n", avctx->codec->name, codec->name);
return AVERROR(EINVAL);
}
if (!codec)
codec = avctx->codec;

if (avctx->extradata_size < 0 || avctx->extradata_size >= FF_MAX_EXTRADATA_SIZE)
return AVERROR(EINVAL);

if (options)
av_dict_copy(&tmp, *options, 0);

lock_avcodec(codec);

avci = av_mallocz(sizeof(*avci));
if (!avci) {
ret = AVERROR(ENOMEM);
goto end;
}
avctx->internal = avci;

#if FF_API_OLD_ENCDEC
avci->to_free = av_frame_alloc();
avci->compat_decode_frame = av_frame_alloc();
avci->compat_encode_packet = av_packet_alloc();
if (!avci->to_free || !avci->compat_decode_frame || !avci->compat_encode_packet) {
ret = AVERROR(ENOMEM);
goto free_and_end;
}
#endif
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, &tmp)) < 0)
goto free_and_end;
} else {
avctx->priv_data = NULL;
}
if ((ret = av_opt_set_dict(avctx, &tmp)) < 0)
goto free_and_end;

if (avctx->codec_whitelist && av_match_list(codec->name, avctx->codec_whitelist, ',') <= 0) {
av_log(avctx, AV_LOG_ERROR, "Codec (%s) not on whitelist \'%s\'\n", codec->name, avctx->codec_whitelist);
ret = AVERROR(EINVAL);
goto free_and_end;
}

// only call ff_set_dimensions() for non H.264/VP6F/DXV codecs so as not to overwrite previously setup dimensions
if (!(avctx->coded_width && avctx->coded_height && avctx->width && avctx->height &&
(avctx->codec_id == AV_CODEC_ID_H264 || avctx->codec_id == AV_CODEC_ID_VP6F || avctx->codec_id == AV_CODEC_ID_DXV))) {
if (avctx->coded_width && avctx->coded_height)
ret = ff_set_dimensions(avctx, avctx->coded_width, avctx->coded_height);
else if (avctx->width && avctx->height)
ret = ff_set_dimensions(avctx, avctx->width, avctx->height);
if (ret < 0)
goto free_and_end;
}

if ((avctx->coded_width || avctx->coded_height || avctx->width || avctx->height)
&& ( av_image_check_size2(avctx->coded_width, avctx->coded_height, avctx->max_pixels, AV_PIX_FMT_NONE, 0, avctx) < 0
|| av_image_check_size2(avctx->width, avctx->height, avctx->max_pixels, AV_PIX_FMT_NONE, 0, avctx) < 0)) {
av_log(avctx, AV_LOG_WARNING, "Ignoring invalid width/height values\n");
ff_set_dimensions(avctx, 0, 0);
}

if (avctx->width > 0 && avctx->height > 0) {
if (av_image_check_sar(avctx->width, avctx->height,
avctx->sample_aspect_ratio) < 0) {
av_log(avctx, AV_LOG_WARNING, "ignoring invalid SAR: %u/%u\n",
avctx->sample_aspect_ratio.num,
avctx->sample_aspect_ratio.den);
avctx->sample_aspect_ratio = (AVRational){ 0, 1 };
}
}

if (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 (av_codec_is_decoder(codec) &&
codec->type == AVMEDIA_TYPE_AUDIO &&
!(codec->capabilities & AV_CODEC_CAP_CHANNEL_CONF) &&
avctx->channels == 0) {
av_log(avctx, AV_LOG_ERROR, "Decoder requires channel count but channels not set\n");
ret = AVERROR(EINVAL);
goto free_and_end;
}

if (avctx->sample_rate < 0) {
av_log(avctx, AV_LOG_ERROR, "Invalid sample rate: %d\n", avctx->sample_rate);
ret = AVERROR(EINVAL);
goto free_and_end;
}
if (avctx->block_align < 0) {
av_log(avctx, AV_LOG_ERROR, "Invalid block align: %d\n", avctx->block_align);
ret = AVERROR(EINVAL);
goto free_and_end;
}

avctx->codec = codec;
if ((avctx->codec_type == AVMEDIA_TYPE_UNKNOWN || avctx->codec_type == codec->type) &&
avctx->codec_id == AV_CODEC_ID_NONE) {
avctx->codec_type = codec->type;
avctx->codec_id = codec->id;
}
if (avctx->codec_id != codec->id || (avctx->codec_type != codec->type
&& avctx->codec_type != AVMEDIA_TYPE_ATTACHMENT)) {
av_log(avctx, AV_LOG_ERROR, "Codec type or id mismatches\n");
ret = AVERROR(EINVAL);
goto free_and_end;
}
avctx->frame_number = 0;
avctx->codec_descriptor = avcodec_descriptor_get(avctx->codec_id);

if ((avctx->codec->capabilities & AV_CODEC_CAP_EXPERIMENTAL) &&
avctx->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
const char *codec_string = av_codec_is_encoder(codec) ? "encoder" : "decoder";
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 (!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, options ? *options : NULL);
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 (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 ( avctx->codec->init && (!(avctx->active_thread_type&FF_THREAD_FRAME)
|| avci->frame_thread_encoder)) {
ret = avctx->codec->init(avctx);
if (ret < 0) {
codec_init_ok = -1;
goto free_and_end;
}
codec_init_ok = 1;
}

ret=0;

if (av_codec_is_decoder(avctx->codec)) {
if (!avctx->bit_rate)
avctx->bit_rate = get_bit_rate(avctx);
/* validate channel layout from the decoder */
if (avctx->channel_layout) {
int channels = av_get_channel_layout_nb_channels(avctx->channel_layout);
if (!avctx->channels)
avctx->channels = channels;
else if (channels != avctx->channels) {
char buf[512];
av_get_channel_layout_string(buf, sizeof(buf), -1, avctx->channel_layout);
av_log(avctx, AV_LOG_WARNING,
"Channel layout '%s' with %d channels does not match specified number of channels %d: "
"ignoring specified channel layout\n",
buf, channels, avctx->channels);
avctx->channel_layout = 0;
}
}
if (avctx->channels && avctx->channels < 0 ||
avctx->channels > FF_SANE_NB_CHANNELS) {
ret = AVERROR(EINVAL);
goto free_and_end;
}
if (avctx->bits_per_coded_sample < 0) {
ret = AVERROR(EINVAL);
goto free_and_end;
}
if (avctx->sub_charenc) {
if (avctx->codec_type != AVMEDIA_TYPE_SUBTITLE) {
av_log(avctx, AV_LOG_ERROR, "Character encoding is only "
"supported with subtitles codecs\n");
ret = AVERROR(EINVAL);
goto free_and_end;
} else if (avctx->codec_descriptor->props & AV_CODEC_PROP_BITMAP_SUB) {
av_log(avctx, AV_LOG_WARNING, "Codec '%s' is bitmap-based, "
"subtitles character encoding will be ignored\n",
avctx->codec_descriptor->name);
avctx->sub_charenc_mode = FF_SUB_CHARENC_MODE_DO_NOTHING;
} else {
/* input character encoding is set for a text based subtitle
* codec at this point */
if (avctx->sub_charenc_mode == FF_SUB_CHARENC_MODE_AUTOMATIC)
avctx->sub_charenc_mode = FF_SUB_CHARENC_MODE_PRE_DECODER;

if (avctx->sub_charenc_mode == FF_SUB_CHARENC_MODE_PRE_DECODER) {
#if CONFIG_ICONV
iconv_t cd = iconv_open("UTF-8", avctx->sub_charenc);
if (cd == (iconv_t)-1) {
ret = AVERROR(errno);
av_log(avctx, AV_LOG_ERROR, "Unable to open iconv context "
"with input character encoding \"%s\"\n", avctx->sub_charenc);
goto free_and_end;
}
iconv_close(cd);
#else
av_log(avctx, AV_LOG_ERROR, "Character encoding subtitles "
"conversion needs a libavcodec built with iconv support "
"for this codec\n");
ret = AVERROR(ENOSYS);
goto free_and_end;
#endif
}
}
}

#if FF_API_AVCTX_TIMEBASE
if (avctx->framerate.num > 0 && avctx->framerate.den > 0)
avctx->time_base = av_inv_q(av_mul_q(avctx->framerate, (AVRational){avctx->ticks_per_frame, 1}));
#endif
}
if (codec->priv_data_size > 0 && avctx->priv_data && codec->priv_class) {
av_assert0(*(const AVClass **)avctx->priv_data == codec->priv_class);
}

end:
unlock_avcodec(codec);
if (options) {
av_dict_free(options);
*options = tmp;
}

return ret;
free_and_end:
if (avctx->codec && avctx->codec->close &&
(codec_init_ok > 0 || (codec_init_ok < 0 &&
avctx->codec->caps_internal & FF_CODEC_CAP_INIT_CLEANUP)))
avctx->codec->close(avctx);

if (HAVE_THREADS && avci->thread_ctx)
ff_thread_free(avctx);

if (codec->priv_class && avctx->priv_data)
av_opt_free(avctx->priv_data);
av_opt_free(avctx);

if (av_codec_is_encoder(avctx->codec)) {
#if FF_API_CODED_FRAME
FF_DISABLE_DEPRECATION_WARNINGS
av_frame_free(&avctx->coded_frame);
FF_ENABLE_DEPRECATION_WARNINGS
#endif
av_freep(&avctx->extradata);
avctx->extradata_size = 0;
}

av_dict_free(&tmp);
av_freep(&avctx->priv_data);
av_freep(&avctx->subtitle_header);

#if FF_API_OLD_ENCDEC
av_frame_free(&avci->to_free);
av_frame_free(&avci->compat_decode_frame);
av_packet_free(&avci->compat_encode_packet);
#endif
av_frame_free(&avci->buffer_frame);
av_packet_free(&avci->buffer_pkt);
av_packet_free(&avci->last_pkt_props);
av_fifo_freep(&avci->pkt_props);

av_packet_free(&avci->ds.in_pkt);
av_frame_free(&avci->es.in_frame);
av_bsf_free(&avci->bsf);

av_buffer_unref(&avci->pool);
av_freep(&avci);
avctx->internal = NULL;
avctx->codec = NULL;
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);
#if FF_API_OLD_ENCDEC
av_frame_unref(avci->compat_decode_frame);
av_packet_unref(avci->compat_encode_packet);
#endif
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);

#if FF_API_OLD_ENCDEC
FF_DISABLE_DEPRECATION_WARNINGS
if (!avctx->refcounted_frames)
av_frame_unref(avci->to_free);
FF_ENABLE_DEPRECATION_WARNINGS
#endif
}

void avsubtitle_free(AVSubtitle *sub)
{
int i;

for (i = 0; i < sub->num_rects; i++) {
av_freep(&sub->rects[i]->data[0]);
av_freep(&sub->rects[i]->data[1]);
av_freep(&sub->rects[i]->data[2]);
av_freep(&sub->rects[i]->data[3]);
av_freep(&sub->rects[i]->text);
av_freep(&sub->rects[i]->ass);
av_freep(&sub->rects[i]);
}

av_freep(&sub->rects);

memset(sub, 0, sizeof(*sub));
}

av_cold int avcodec_close(AVCodecContext *avctx)
{
int i;

if (!avctx)
return 0;

if (avcodec_is_open(avctx)) {
if (CONFIG_FRAME_THREAD_ENCODER &&
avctx->internal->frame_thread_encoder && avctx->thread_count > 1) {
ff_frame_thread_encoder_free(avctx);
}
if (HAVE_THREADS && avctx->internal->thread_ctx)
ff_thread_free(avctx);
if (avctx->codec && avctx->codec->close)
avctx->codec->close(avctx);
avctx->internal->byte_buffer_size = 0;
av_freep(&avctx->internal->byte_buffer);
#if FF_API_OLD_ENCDEC
av_frame_free(&avctx->internal->to_free);
av_frame_free(&avctx->internal->compat_decode_frame);
av_packet_free(&avctx->internal->compat_encode_packet);
#endif
av_frame_free(&avctx->internal->buffer_frame);
av_packet_free(&avctx->internal->buffer_pkt);
av_packet_unref(avctx->internal->last_pkt_props);
while (av_fifo_size(avctx->internal->pkt_props) >=
sizeof(*avctx->internal->last_pkt_props)) {
av_fifo_generic_read(avctx->internal->pkt_props,
avctx->internal->last_pkt_props,
sizeof(*avctx->internal->last_pkt_props),
NULL);
av_packet_unref(avctx->internal->last_pkt_props);
}
av_packet_free(&avctx->internal->last_pkt_props);
av_fifo_freep(&avctx->internal->pkt_props);

av_packet_free(&avctx->internal->ds.in_pkt);
av_frame_free(&avctx->internal->es.in_frame);

av_buffer_unref(&avctx->internal->pool);

if (avctx->hwaccel && avctx->hwaccel->uninit)
avctx->hwaccel->uninit(avctx);
av_freep(&avctx->internal->hwaccel_priv_data);

av_bsf_free(&avctx->internal->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);
#if FF_API_CODED_FRAME
FF_DISABLE_DEPRECATION_WARNINGS
av_frame_free(&avctx->coded_frame);
FF_ENABLE_DEPRECATION_WARNINGS
#endif
}
avctx->codec = NULL;
avctx->active_thread_type = 0;

return 0;
}

const char *avcodec_get_name(enum AVCodecID id) const char *avcodec_get_name(enum AVCodecID id)
{ {
const AVCodecDescriptor *cd; const AVCodecDescriptor *cd;
@@ -1087,201 +493,6 @@ size_t av_get_codec_tag_string(char *buf, size_t buf_size, unsigned int codec_ta
} }
#endif #endif


void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode)
{
const char *codec_type;
const char *codec_name;
const char *profile = NULL;
int64_t bitrate;
int new_line = 0;
AVRational display_aspect_ratio;
const char *separator = enc->dump_separator ? (const char *)enc->dump_separator : ", ";

if (!buf || buf_size <= 0)
return;
codec_type = av_get_media_type_string(enc->codec_type);
codec_name = avcodec_get_name(enc->codec_id);
profile = avcodec_profile_name(enc->codec_id, enc->profile);

snprintf(buf, buf_size, "%s: %s", codec_type ? codec_type : "unknown",
codec_name);
buf[0] ^= 'a' ^ 'A'; /* first letter in uppercase */

if (enc->codec && strcmp(enc->codec->name, codec_name))
snprintf(buf + strlen(buf), buf_size - strlen(buf), " (%s)", enc->codec->name);

if (profile)
snprintf(buf + strlen(buf), buf_size - strlen(buf), " (%s)", profile);
if ( enc->codec_type == AVMEDIA_TYPE_VIDEO
&& av_log_get_level() >= AV_LOG_VERBOSE
&& enc->refs)
snprintf(buf + strlen(buf), buf_size - strlen(buf),
", %d reference frame%s",
enc->refs, enc->refs > 1 ? "s" : "");

if (enc->codec_tag)
snprintf(buf + strlen(buf), buf_size - strlen(buf), " (%s / 0x%04X)",
av_fourcc2str(enc->codec_tag), enc->codec_tag);

switch (enc->codec_type) {
case AVMEDIA_TYPE_VIDEO:
{
char detail[256] = "(";

av_strlcat(buf, separator, buf_size);

snprintf(buf + strlen(buf), buf_size - strlen(buf),
"%s", enc->pix_fmt == AV_PIX_FMT_NONE ? "none" :
av_get_pix_fmt_name(enc->pix_fmt));
if (enc->bits_per_raw_sample && enc->pix_fmt != AV_PIX_FMT_NONE &&
enc->bits_per_raw_sample < av_pix_fmt_desc_get(enc->pix_fmt)->comp[0].depth)
av_strlcatf(detail, sizeof(detail), "%d bpc, ", enc->bits_per_raw_sample);
if (enc->color_range != AVCOL_RANGE_UNSPECIFIED)
av_strlcatf(detail, sizeof(detail), "%s, ",
av_color_range_name(enc->color_range));

if (enc->colorspace != AVCOL_SPC_UNSPECIFIED ||
enc->color_primaries != AVCOL_PRI_UNSPECIFIED ||
enc->color_trc != AVCOL_TRC_UNSPECIFIED) {
if (enc->colorspace != (int)enc->color_primaries ||
enc->colorspace != (int)enc->color_trc) {
new_line = 1;
av_strlcatf(detail, sizeof(detail), "%s/%s/%s, ",
av_color_space_name(enc->colorspace),
av_color_primaries_name(enc->color_primaries),
av_color_transfer_name(enc->color_trc));
} else
av_strlcatf(detail, sizeof(detail), "%s, ",
av_get_colorspace_name(enc->colorspace));
}

if (enc->field_order != AV_FIELD_UNKNOWN) {
const char *field_order = "progressive";
if (enc->field_order == AV_FIELD_TT)
field_order = "top first";
else if (enc->field_order == AV_FIELD_BB)
field_order = "bottom first";
else if (enc->field_order == AV_FIELD_TB)
field_order = "top coded first (swapped)";
else if (enc->field_order == AV_FIELD_BT)
field_order = "bottom coded first (swapped)";

av_strlcatf(detail, sizeof(detail), "%s, ", field_order);
}

if (av_log_get_level() >= AV_LOG_VERBOSE &&
enc->chroma_sample_location != AVCHROMA_LOC_UNSPECIFIED)
av_strlcatf(detail, sizeof(detail), "%s, ",
av_chroma_location_name(enc->chroma_sample_location));

if (strlen(detail) > 1) {
detail[strlen(detail) - 2] = 0;
av_strlcatf(buf, buf_size, "%s)", detail);
}
}

if (enc->width) {
av_strlcat(buf, new_line ? separator : ", ", buf_size);

snprintf(buf + strlen(buf), buf_size - strlen(buf),
"%dx%d",
enc->width, enc->height);

if (av_log_get_level() >= AV_LOG_VERBOSE &&
(enc->width != enc->coded_width ||
enc->height != enc->coded_height))
snprintf(buf + strlen(buf), buf_size - strlen(buf),
" (%dx%d)", enc->coded_width, enc->coded_height);

if (enc->sample_aspect_ratio.num) {
av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,
enc->width * (int64_t)enc->sample_aspect_ratio.num,
enc->height * (int64_t)enc->sample_aspect_ratio.den,
1024 * 1024);
snprintf(buf + strlen(buf), buf_size - strlen(buf),
" [SAR %d:%d DAR %d:%d]",
enc->sample_aspect_ratio.num, enc->sample_aspect_ratio.den,
display_aspect_ratio.num, display_aspect_ratio.den);
}
if (av_log_get_level() >= AV_LOG_DEBUG) {
int g = av_gcd(enc->time_base.num, enc->time_base.den);
snprintf(buf + strlen(buf), buf_size - strlen(buf),
", %d/%d",
enc->time_base.num / g, enc->time_base.den / g);
}
}
if (encode) {
snprintf(buf + strlen(buf), buf_size - strlen(buf),
", q=%d-%d", enc->qmin, enc->qmax);
} else {
if (enc->properties & FF_CODEC_PROPERTY_CLOSED_CAPTIONS)
snprintf(buf + strlen(buf), buf_size - strlen(buf),
", Closed Captions");
if (enc->properties & FF_CODEC_PROPERTY_LOSSLESS)
snprintf(buf + strlen(buf), buf_size - strlen(buf),
", lossless");
}
break;
case AVMEDIA_TYPE_AUDIO:
av_strlcat(buf, separator, buf_size);

if (enc->sample_rate) {
snprintf(buf + strlen(buf), buf_size - strlen(buf),
"%d Hz, ", enc->sample_rate);
}
av_get_channel_layout_string(buf + strlen(buf), buf_size - strlen(buf), enc->channels, enc->channel_layout);
if (enc->sample_fmt != AV_SAMPLE_FMT_NONE) {
snprintf(buf + strlen(buf), buf_size - strlen(buf),
", %s", av_get_sample_fmt_name(enc->sample_fmt));
}
if ( enc->bits_per_raw_sample > 0
&& enc->bits_per_raw_sample != av_get_bytes_per_sample(enc->sample_fmt) * 8)
snprintf(buf + strlen(buf), buf_size - strlen(buf),
" (%d bit)", enc->bits_per_raw_sample);
if (av_log_get_level() >= AV_LOG_VERBOSE) {
if (enc->initial_padding)
snprintf(buf + strlen(buf), buf_size - strlen(buf),
", delay %d", enc->initial_padding);
if (enc->trailing_padding)
snprintf(buf + strlen(buf), buf_size - strlen(buf),
", padding %d", enc->trailing_padding);
}
break;
case AVMEDIA_TYPE_DATA:
if (av_log_get_level() >= AV_LOG_DEBUG) {
int g = av_gcd(enc->time_base.num, enc->time_base.den);
if (g)
snprintf(buf + strlen(buf), buf_size - strlen(buf),
", %d/%d",
enc->time_base.num / g, enc->time_base.den / g);
}
break;
case AVMEDIA_TYPE_SUBTITLE:
if (enc->width)
snprintf(buf + strlen(buf), buf_size - strlen(buf),
", %dx%d", enc->width, enc->height);
break;
default:
return;
}
if (encode) {
if (enc->flags & AV_CODEC_FLAG_PASS1)
snprintf(buf + strlen(buf), buf_size - strlen(buf),
", pass 1");
if (enc->flags & AV_CODEC_FLAG_PASS2)
snprintf(buf + strlen(buf), buf_size - strlen(buf),
", pass 2");
}
bitrate = get_bit_rate(enc);
if (bitrate != 0) {
snprintf(buf + strlen(buf), buf_size - strlen(buf),
", %"PRId64" kb/s", bitrate / 1000);
} else if (enc->rc_max_rate > 0) {
snprintf(buf + strlen(buf), buf_size - strlen(buf),
", max. %"PRId64" kb/s", enc->rc_max_rate / 1000);
}
}

const char *av_get_profile_name(const AVCodec *codec, int profile) const char *av_get_profile_name(const AVCodec *codec, int profile)
{ {
const AVProfile *p; const AVProfile *p;
@@ -1310,27 +521,6 @@ const char *avcodec_profile_name(enum AVCodecID codec_id, int profile)
return NULL; return NULL;
} }


unsigned avcodec_version(void)
{
av_assert0(AV_CODEC_ID_PCM_S8_PLANAR==65563);
av_assert0(AV_CODEC_ID_ADPCM_G722==69660);
av_assert0(AV_CODEC_ID_SRT==94216);
av_assert0(LIBAVCODEC_VERSION_MICRO >= 100);

return LIBAVCODEC_VERSION_INT;
}

const char *avcodec_configuration(void)
{
return FFMPEG_CONFIGURATION;
}

const char *avcodec_license(void)
{
#define LICENSE_PREFIX "libavcodec license: "
return &LICENSE_PREFIX FFMPEG_LICENSE[sizeof(LICENSE_PREFIX) - 1];
}

int av_get_exact_bits_per_sample(enum AVCodecID codec_id) int av_get_exact_bits_per_sample(enum AVCodecID codec_id)
{ {
switch (codec_id) { switch (codec_id) {
@@ -1702,13 +892,6 @@ void av_register_hwaccel(AVHWAccel *hwaccel)
} }
#endif #endif


#if FF_API_LOCKMGR
int av_lockmgr_register(int (*cb)(void **mutex, enum AVLockOp op))
{
return 0;
}
#endif

unsigned int avpriv_toupper4(unsigned int x) unsigned int avpriv_toupper4(unsigned int x)
{ {
return av_toupper(x & 0xFF) + return av_toupper(x & 0xFF) +
@@ -1794,11 +977,6 @@ void ff_thread_report_progress2(AVCodecContext *avctx, int field, int thread, in


#endif #endif


int avcodec_is_open(AVCodecContext *s)
{
return !!s->internal;
}

const uint8_t *avpriv_find_start_code(const uint8_t *av_restrict p, const uint8_t *avpriv_find_start_code(const uint8_t *av_restrict p,
const uint8_t *end, const uint8_t *end,
uint32_t *av_restrict state) uint32_t *av_restrict state)


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