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Code Issues Releases Activity

extract correct d10 aes3 audio channels number

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Originally committed as revision 10538 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Baptiste Coudurier 2007-09-21 16:28:17 +00:00
parent a27d6e714f
commit 28cf721574
1 changed files with 13 additions and 15 deletions
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28
libavformat/mxf.c
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@ -47,6 +47,7 @@
#include "avformat.h"
#include "aes.h"
#include "bytestream.h"
typedef uint8_t UID[16];
@ -241,6 +242,7 @@ static int mxf_get_d10_aes3_packet(ByteIOContext *pb, AVStream *st, AVPacket *pk
{
uint8_t buffer[61444];
uint8_t *buf_ptr, *end_ptr, *data_ptr;
int i;
if (length > 61444) /* worst case PAL 1920 samples 8 channels */
return -1;
@ -249,17 +251,15 @@ static int mxf_get_d10_aes3_packet(ByteIOContext *pb, AVStream *st, AVPacket *pk
data_ptr = pkt->data;
end_ptr = buffer + length;
buf_ptr = buffer + 4; /* skip SMPTE 331M header */
for (; buf_ptr < end_ptr; buf_ptr += 4) {
if (st->codec->bits_per_sample == 24) {
data_ptr[0] = (buf_ptr[2] >> 4) | ((buf_ptr[3] & 0x0f) << 4);
data_ptr[1] = (buf_ptr[1] >> 4) | ((buf_ptr[2] & 0x0f) << 4);
data_ptr[2] = (buf_ptr[0] >> 4) | ((buf_ptr[1] & 0x0f) << 4);
data_ptr += 3;
} else {
data_ptr[0] = (buf_ptr[2] >> 4) | ((buf_ptr[3] & 0x0f) << 4);
data_ptr[1] = (buf_ptr[1] >> 4) | ((buf_ptr[2] & 0x0f) << 4);
data_ptr += 2;
for (; buf_ptr < end_ptr; ) {
for (i = 0; i < st->codec->channels; i++) {
uint32_t sample = bytestream_get_le32(&buf_ptr);
if (st->codec->bits_per_sample == 24)
bytestream_put_le24(&data_ptr, (sample >> 4) & 0xffffff);
else
bytestream_put_le16(&data_ptr, (sample >> 12) & 0xffff);
}
buf_ptr += 32 - st->codec->channels*4; // always 8 channels stored SMPTE 331M
}
pkt->size = data_ptr - pkt->data;
return 0;
@ -636,9 +636,9 @@ static const MXFCodecUL mxf_sound_essence_container_uls[] = {
{ { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x02,0x0D,0x01,0x03,0x01,0x02,0x04,0x40,0x01 }, CODEC_ID_MP2, Frame }, /* MPEG-ES Frame wrapped, 0x40 ??? stream id */
{ { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x02,0x0D,0x01,0x03,0x01,0x02,0x04,0xc0,0x01 }, CODEC_ID_MP2, Frame }, /* MPEG-ES Frame wrapped, 0xc0 MPA stream id */
{ { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x02,0x0D,0x01,0x03,0x01,0x02,0x04,0xc0,0x02 }, CODEC_ID_MP2, Clip }, /* MPEG-ES Clip wrapped, 0xc0 MPA stream id */
{ { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x05,0x01 }, CODEC_ID_PCM_S16BE, Frame }, /* D-10 Mapping 30Mbps PAL Extended Template */
{ { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x03,0x01 }, CODEC_ID_PCM_S16BE, Frame }, /* D-10 Mapping 40Mbps PAL Extended Template */
{ { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x01,0x01 }, CODEC_ID_PCM_S16BE, Frame }, /* D-10 Mapping 50Mbps PAL Extended Template */
{ { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x05,0x01 }, CODEC_ID_PCM_S16LE, Frame }, /* D-10 Mapping 30Mbps PAL Extended Template */
{ { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x03,0x01 }, CODEC_ID_PCM_S16LE, Frame }, /* D-10 Mapping 40Mbps PAL Extended Template */
{ { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x01,0x01 }, CODEC_ID_PCM_S16LE, Frame }, /* D-10 Mapping 50Mbps PAL Extended Template */
{ { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 }, CODEC_ID_NONE, Frame },
};
@ -858,8 +858,6 @@ static int mxf_parse_structural_metadata(MXFContext *mxf)
st->codec->codec_id = CODEC_ID_PCM_S24BE;
else if (descriptor->bits_per_sample == 32)
st->codec->codec_id = CODEC_ID_PCM_S32BE;
if (descriptor->essence_container_ul[13] == 0x01) /* D-10 Mapping */
st->codec->channels = 8; /* force channels to 8 */
} else if (st->codec->codec_id == CODEC_ID_MP2) {
st->need_parsing = AVSTREAM_PARSE_FULL;
}