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Merge commit '33d18982fa'

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* commit '33d18982fa':
  lavc: add a new bitstream filtering API

Conversions-by: Hendrik Leppkes <h.leppkes@gmail.com>
Conversions-by: Derek Buitenguis <derek.buitenhuis@gmail.com>
Merged-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>
This commit is contained in:
Derek Buitenhuis 2016-04-17 18:47:25 +01:00
commit af9cac1be1
26 changed files with 1586 additions and 648 deletions
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58
libavcodec/imx_dump_header_bsf.c
View file

@ -26,35 +26,51 @@
*/
#include "avcodec.h"
#include "bsf.h"
#include "bytestream.h"
static int imx_dump_header(AVBitStreamFilterContext *bsfc, AVCodecContext *avctx, const char *args,
uint8_t **poutbuf, int *poutbuf_size,
const uint8_t *buf, int buf_size, int keyframe)
static int imx_dump_header(AVBSFContext *ctx, AVPacket *out)
{
/* MXF essence element key */
static const uint8_t imx_header[16] = { 0x06,0x0e,0x2b,0x34,0x01,0x02,0x01,0x01,0x0d,0x01,0x03,0x01,0x05,0x01,0x01,0x00 };
uint8_t *poutbufp;
if (avctx->codec_id != AV_CODEC_ID_MPEG2VIDEO) {
av_log(avctx, AV_LOG_ERROR, "imx bitstream filter only applies to mpeg2video codec\n");
return 0;
}
AVPacket *in;
int ret = 0;
uint8_t *out_buf;
*poutbuf = av_malloc(buf_size + 20 + AV_INPUT_BUFFER_PADDING_SIZE);
if (!*poutbuf)
return AVERROR(ENOMEM);
poutbufp = *poutbuf;
bytestream_put_buffer(&poutbufp, imx_header, 16);
bytestream_put_byte(&poutbufp, 0x83); /* KLV BER long form */
bytestream_put_be24(&poutbufp, buf_size);
bytestream_put_buffer(&poutbufp, buf, buf_size);
*poutbuf_size = poutbufp - *poutbuf;
return 1;
ret = ff_bsf_get_packet(ctx, &in);
if (ret < 0)
return ret;
ret = av_new_packet(out, in->size + 20);
if (ret < 0)
goto fail;
out_buf = out->data;
bytestream_put_buffer(&out_buf, imx_header, 16);
bytestream_put_byte(&out_buf, 0x83); /* KLV BER long form */
bytestream_put_be24(&out_buf, in->size);
bytestream_put_buffer(&out_buf, in->data, in->size);
ret = av_packet_copy_props(out, in);
if (ret < 0)
goto fail;
fail:
if (ret < 0)
av_packet_unref(out);
av_packet_free(&in);
return ret;
}
AVBitStreamFilter ff_imx_dump_header_bsf = {
.name = "imxdump",
.filter = imx_dump_header,
static const enum AVCodecID codec_ids[] = {
AV_CODEC_ID_MPEG2VIDEO, AV_CODEC_ID_NONE,
};
const AVBitStreamFilter ff_imx_dump_header_bsf = {
.name = "imxdump",
.filter = imx_dump_header,
.codec_ids = codec_ids,
};