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rtpdec_jpeg: Add more comments about the fields in the SOF0 section

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Signed-off-by: Martin Storsjö <martin@martin.st>
This commit is contained in:
Martin Storsjö 2012-09-11 12:54:06 +03:00
parent 31adff08a1
commit cbaa9eeda3
1 changed files with 9 additions and 9 deletions
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18
libavformat/rtpdec_jpeg.c
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@ -160,20 +160,20 @@ static int jpeg_create_header(uint8_t *buf, int size, uint32_t type, uint32_t w,
/* SOF0 */
jpeg_put_marker(&pbc, SOF0);
bytestream2_put_be16(&pbc, 17);
bytestream2_put_byte(&pbc, 8);
bytestream2_put_be16(&pbc, 17); /* size */
bytestream2_put_byte(&pbc, 8); /* bits per component */
bytestream2_put_be16(&pbc, h);
bytestream2_put_be16(&pbc, w);
bytestream2_put_byte(&pbc, 3);
bytestream2_put_byte(&pbc, 1);
bytestream2_put_byte(&pbc, 3); /* number of components */
bytestream2_put_byte(&pbc, 1); /* component number */
bytestream2_put_byte(&pbc, (2 << 4) | (type ? 2 : 1)); /* hsample/vsample */
bytestream2_put_byte(&pbc, 0);
bytestream2_put_byte(&pbc, 2);
bytestream2_put_byte(&pbc, 0); /* matrix number */
bytestream2_put_byte(&pbc, 2); /* component number */
bytestream2_put_byte(&pbc, 1 << 4 | 1); /* hsample/vsample */
bytestream2_put_byte(&pbc, nb_qtable == 2 ? 1 : 0);
bytestream2_put_byte(&pbc, 3);
bytestream2_put_byte(&pbc, nb_qtable == 2 ? 1 : 0); /* matrix number */
bytestream2_put_byte(&pbc, 3); /* component number */
bytestream2_put_byte(&pbc, 1 << 4 | 1); /* hsample/vsample */
bytestream2_put_byte(&pbc, nb_qtable == 2 ? 1 : 0);
bytestream2_put_byte(&pbc, nb_qtable == 2 ? 1 : 0); /* matrix number */
/* SOS */
jpeg_put_marker(&pbc, SOS);