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imx dump header bitstream filter, modifies bitstream to fit in mov and be decoded by final cut pro decoder

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Originally committed as revision 8218 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Baptiste Coudurier 2007-03-04 02:59:11 +00:00
parent 895c2c005e
commit 92d6b7fda2
3 changed files with 34 additions and 2 deletions
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1
libavcodec/allcodecs.c
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@ -269,5 +269,6 @@ void avcodec_register_all(void)
av_register_bitstream_filter(&mp3_header_compress_bsf);
av_register_bitstream_filter(&mp3_header_decompress_bsf);
av_register_bitstream_filter(&mjpega_dump_header_bsf);
av_register_bitstream_filter(&imx_dump_header_bsf);
}

5
libavcodec/avcodec.h
View File

@ -37,8 +37,8 @@ extern "C" {
#define AV_STRINGIFY(s) AV_TOSTRING(s)
#define AV_TOSTRING(s) #s
#define LIBAVCODEC_VERSION_INT ((51<<16)+(37<<8)+0)
#define LIBAVCODEC_VERSION 51.37.0
#define LIBAVCODEC_VERSION_INT ((51<<16)+(38<<8)+0)
#define LIBAVCODEC_VERSION 51.38.0
#define LIBAVCODEC_BUILD LIBAVCODEC_VERSION_INT
#define LIBAVCODEC_IDENT "Lavc" AV_STRINGIFY(LIBAVCODEC_VERSION)
@ -2974,6 +2974,7 @@ extern AVBitStreamFilter noise_bsf;
extern AVBitStreamFilter mp3_header_compress_bsf;
extern AVBitStreamFilter mp3_header_decompress_bsf;
extern AVBitStreamFilter mjpega_dump_header_bsf;
extern AVBitStreamFilter imx_dump_header_bsf;
/* memory */

30
libavcodec/mpeg12.c
View File

@ -31,6 +31,7 @@
#include "mpegvideo.h"
#include "mpeg12data.h"
#include "bytestream.h"
//#undef NDEBUG
//#include <assert.h>
@ -3522,6 +3523,35 @@ AVCodecParser mpegvideo_parser = {
};
#endif /* !CONFIG_MPEGVIDEO_PARSER */
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)
{
/* 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 != CODEC_ID_MPEG2VIDEO) {
av_log(avctx, AV_LOG_ERROR, "imx bitstream filter only applies to mpeg2video codec\n");
return 0;
}
*poutbuf = av_malloc(buf_size + 20 + FF_INPUT_BUFFER_PADDING_SIZE);
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;
}
AVBitStreamFilter imx_dump_header_bsf = {
"imxdump",
0,
imx_dump_header,
};
/* this is ugly i know, but the alternative is too make
hundreds of vars global and prefix them with ff_mpeg1_
which is far uglier. */