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avcodec/mpeg12enc: Simplify writing bits

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Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
This commit is contained in:
Andreas Rheinhardt
2025-03-03 18:42:13 +01:00
parent d5db4ee30c
commit 6e225123d8
1 changed files with 4 additions and 12 deletions
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16
libavcodec/mpeg12enc.c
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@ -594,10 +594,8 @@ void ff_mpeg1_encode_picture_header(MpegEncContext *s)
if (fpa_type != 0) {
put_header(s, USER_START_CODE);
put_bits(&s->pb, 8, 'J'); // S3D_video_format_signaling_identifier
put_bits(&s->pb, 8, 'P');
put_bits(&s->pb, 8, '3');
put_bits(&s->pb, 8, 'D');
// S3D_video_format_signaling_identifier
put_bits32(&s->pb, MKBETAG('J','P','3','D'));
put_bits(&s->pb, 8, 0x03); // S3D_video_format_length
put_bits(&s->pb, 1, 1); // reserved_bit
@ -612,21 +610,15 @@ void ff_mpeg1_encode_picture_header(MpegEncContext *s)
AV_FRAME_DATA_A53_CC);
if (side_data) {
if (side_data->size <= A53_MAX_CC_COUNT * 3 && side_data->size % 3 == 0) {
int i = 0;
put_header (s, USER_START_CODE);
put_bits(&s->pb, 8, 'G'); // user_identifier
put_bits(&s->pb, 8, 'A');
put_bits(&s->pb, 8, '9');
put_bits(&s->pb, 8, '4');
put_bits32(&s->pb, MKBETAG('G','A','9','4')); // user_identifier
put_bits(&s->pb, 8, 3); // user_data_type_code
put_bits(&s->pb, 8,
(side_data->size / 3 & A53_MAX_CC_COUNT) | 0x40); // flags, cc_count
put_bits(&s->pb, 8, 0xff); // em_data
for (i = 0; i < side_data->size; i++)
put_bits(&s->pb, 8, side_data->data[i]);
ff_copy_bits(&s->pb, side_data->data, side_data->size);
put_bits(&s->pb, 8, 0xff); // marker_bits
} else {