diff options
Diffstat (limited to 'libavcodec/mpeg12.c')
-rw-r--r-- | libavcodec/mpeg12.c | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/libavcodec/mpeg12.c b/libavcodec/mpeg12.c index 033b9803fd..e4d5bc9717 100644 --- a/libavcodec/mpeg12.c +++ b/libavcodec/mpeg12.c @@ -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. */ |