mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-12-18 03:19:31 +02:00
33d18982fa
Deprecate the current bitstream filtering API.
164 lines
4.2 KiB
C
164 lines
4.2 KiB
C
/*
|
|
* copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at>
|
|
*
|
|
* This file is part of Libav.
|
|
*
|
|
* Libav is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2.1 of the License, or (at your option) any later version.
|
|
*
|
|
* Libav is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with Libav; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
|
|
#include <string.h>
|
|
|
|
#include "avcodec.h"
|
|
|
|
#include "libavutil/internal.h"
|
|
#include "libavutil/mem.h"
|
|
|
|
#if FF_API_OLD_BSF
|
|
FF_DISABLE_DEPRECATION_WARNINGS
|
|
|
|
AVBitStreamFilter *av_bitstream_filter_next(const AVBitStreamFilter *f)
|
|
{
|
|
const AVBitStreamFilter *filter = NULL;
|
|
void *opaque = NULL;
|
|
|
|
while (filter != f)
|
|
filter = av_bsf_next(&opaque);
|
|
|
|
return av_bsf_next(&opaque);
|
|
}
|
|
|
|
void av_register_bitstream_filter(AVBitStreamFilter *bsf)
|
|
{
|
|
}
|
|
|
|
typedef struct BSFCompatContext {
|
|
AVBSFContext *ctx;
|
|
} BSFCompatContext;
|
|
|
|
AVBitStreamFilterContext *av_bitstream_filter_init(const char *name)
|
|
{
|
|
AVBitStreamFilterContext *ctx = NULL;
|
|
BSFCompatContext *priv = NULL;
|
|
const AVBitStreamFilter *bsf;
|
|
|
|
bsf = av_bsf_get_by_name(name);
|
|
if (!bsf)
|
|
return NULL;
|
|
|
|
ctx = av_mallocz(sizeof(*ctx));
|
|
if (!ctx)
|
|
return NULL;
|
|
|
|
priv = av_mallocz(sizeof(*priv));
|
|
if (!priv)
|
|
goto fail;
|
|
|
|
|
|
ctx->filter = bsf;
|
|
ctx->priv_data = priv;
|
|
|
|
return ctx;
|
|
|
|
fail:
|
|
if (priv)
|
|
av_bsf_free(&priv->ctx);
|
|
av_freep(&priv);
|
|
av_freep(&ctx);
|
|
return NULL;
|
|
}
|
|
|
|
void av_bitstream_filter_close(AVBitStreamFilterContext *bsfc)
|
|
{
|
|
BSFCompatContext *priv = bsfc->priv_data;
|
|
|
|
av_bsf_free(&priv->ctx);
|
|
av_freep(&bsfc->priv_data);
|
|
av_free(bsfc);
|
|
}
|
|
|
|
int av_bitstream_filter_filter(AVBitStreamFilterContext *bsfc,
|
|
AVCodecContext *avctx, const char *args,
|
|
uint8_t **poutbuf, int *poutbuf_size,
|
|
const uint8_t *buf, int buf_size, int keyframe)
|
|
{
|
|
BSFCompatContext *priv = bsfc->priv_data;
|
|
AVPacket pkt = { 0 };
|
|
int ret;
|
|
|
|
if (!priv->ctx) {
|
|
ret = av_bsf_alloc(bsfc->filter, &priv->ctx);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = avcodec_parameters_from_context(priv->ctx->par_in, avctx);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
priv->ctx->time_base_in = avctx->time_base;
|
|
|
|
ret = av_bsf_init(priv->ctx);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
if (priv->ctx->par_out->extradata_size) {
|
|
av_freep(&avctx->extradata);
|
|
avctx->extradata_size = 0;
|
|
avctx->extradata = av_mallocz(priv->ctx->par_out->extradata_size + AV_INPUT_BUFFER_PADDING_SIZE);
|
|
if (!avctx->extradata)
|
|
return AVERROR(ENOMEM);
|
|
memcpy(avctx->extradata, priv->ctx->par_out->extradata,
|
|
priv->ctx->par_out->extradata_size);
|
|
avctx->extradata_size = priv->ctx->par_out->extradata_size;
|
|
}
|
|
}
|
|
|
|
pkt.data = buf;
|
|
pkt.size = buf_size;
|
|
|
|
ret = av_bsf_send_packet(priv->ctx, &pkt);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
*poutbuf = NULL;
|
|
*poutbuf_size = 0;
|
|
|
|
ret = av_bsf_receive_packet(priv->ctx, &pkt);
|
|
if (ret == AVERROR(EAGAIN) || ret == AVERROR_EOF)
|
|
return 0;
|
|
else if (ret < 0)
|
|
return ret;
|
|
|
|
*poutbuf = av_malloc(pkt.size + AV_INPUT_BUFFER_PADDING_SIZE);
|
|
if (!*poutbuf) {
|
|
av_packet_unref(&pkt);
|
|
return AVERROR(ENOMEM);
|
|
}
|
|
|
|
*poutbuf_size = pkt.size;
|
|
memcpy(*poutbuf, pkt.data, pkt.size);
|
|
|
|
av_packet_unref(&pkt);
|
|
|
|
/* drain all the remaining packets we cannot return */
|
|
while (ret >= 0) {
|
|
ret = av_bsf_receive_packet(priv->ctx, &pkt);
|
|
av_packet_unref(&pkt);
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
FF_ENABLE_DEPRECATION_WARNINGS
|
|
#endif
|