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Code Issues Releases Activity

avcodec/speedhqenc: Add SpeedHQEncContext and move slice_start to it

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Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
This commit is contained in:
Andreas Rheinhardt 2022-01-25 17:03:47 +01:00
parent 9b3279b201
commit 046736f342
2 changed files with 14 additions and 8 deletions
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3
libavcodec/mpegvideo.h
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@ -417,9 +417,6 @@ typedef struct MpegEncContext {
int inter_intra_pred;
int mspel;
/* SpeedHQ specific */
int slice_start;
/* decompression specific */
GetBitContext gb;

19
libavcodec/speedhqenc.c
View File

@ -57,6 +57,12 @@ static uint32_t speedhq_chr_dc_uni[512];
static uint8_t uni_speedhq_ac_vlc_len[64 * 64 * 2];
typedef struct SpeedHQEncContext {
MpegEncContext m;
int slice_start;
} SpeedHQEncContext;
static av_cold void speedhq_init_static_data(void)
{
ff_rl_init(&ff_rl_speedhq, speedhq_static_rl_table_store);
@ -124,24 +130,27 @@ av_cold int ff_speedhq_encode_init(MpegEncContext *s)
void ff_speedhq_encode_picture_header(MpegEncContext *s)
{
SpeedHQEncContext *ctx = (SpeedHQEncContext*)s;
put_bits_le(&s->pb, 8, 100 - s->qscale * 2); /* FIXME why doubled */
put_bits_le(&s->pb, 24, 4); /* no second field */
ctx->slice_start = 4;
/* length of first slice, will be filled out later */
s->slice_start = 4;
put_bits_le(&s->pb, 24, 0);
}
void ff_speedhq_end_slice(MpegEncContext *s)
{
SpeedHQEncContext *ctx = (SpeedHQEncContext*)s;
int slice_len;
flush_put_bits_le(&s->pb);
slice_len = s->pb.buf_ptr - (s->pb.buf + s->slice_start);
AV_WL24(s->pb.buf + s->slice_start, slice_len);
slice_len = put_bytes_output(&s->pb) - ctx->slice_start;
AV_WL24(s->pb.buf + ctx->slice_start, slice_len);
/* length of next slice, will be filled out later */
s->slice_start = s->pb.buf_ptr - s->pb.buf;
ctx->slice_start = put_bytes_output(&s->pb);
put_bits_le(&s->pb, 24, 0);
}
@ -274,7 +283,7 @@ const FFCodec ff_speedhq_encoder = {
.p.type = AVMEDIA_TYPE_VIDEO,
.p.id = AV_CODEC_ID_SPEEDHQ,
.p.priv_class = &ff_mpv_enc_class,
.priv_data_size = sizeof(MpegEncContext),
.priv_data_size = sizeof(SpeedHQEncContext),
.init = ff_mpv_encode_init,
.encode2 = ff_mpv_encode_picture,
.close = ff_mpv_encode_end,