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avcodec/av1dec: expose coded_lossless

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Signed-off-by: Timo Rothenpieler <timo@rothenpieler.org>
Co-authored-by: James Almer <jamrial@gmail.com>
This commit is contained in:
Timo Rothenpieler 2020-11-03 15:54:44 +01:00
parent e1efff8906
commit 5868f1c66b
2 changed files with 35 additions and 0 deletions
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33
libavcodec/av1dec.c
View File

@ -217,6 +217,36 @@ static void skip_mode_params(AV1DecContext *s)
AV1_REF_FRAME_LAST + FFMAX(forward_idx, second_forward_idx);
}
static void coded_lossless_param(AV1DecContext *s)
{
const AV1RawFrameHeader *header = s->raw_frame_header;
int i;
if (header->delta_q_y_dc || header->delta_q_u_ac ||
header->delta_q_u_dc || header->delta_q_v_ac ||
header->delta_q_v_dc) {
s->cur_frame.coded_lossless = 0;
return;
}
s->cur_frame.coded_lossless = 1;
for (i = 0; i < AV1_MAX_SEGMENTS; i++) {
int qindex;
if (header->feature_enabled[i][AV1_SEG_LVL_ALT_Q]) {
qindex = (header->base_q_idx +
header->feature_value[i][AV1_SEG_LVL_ALT_Q]);
} else {
qindex = header->base_q_idx;
}
qindex = av_clip_uintp2(qindex, 8);
if (qindex) {
s->cur_frame.coded_lossless = 0;
return;
}
}
}
static int init_tile_data(AV1DecContext *s)
{
@ -393,6 +423,7 @@ static void av1_frame_unref(AVCodecContext *avctx, AV1Frame *f)
f->order_hint = 0;
memset(f->skip_mode_frame_idx, 0,
2 * sizeof(uint8_t));
f->coded_lossless = 0;
}
static int av1_frame_ref(AVCodecContext *avctx, AV1Frame *dst, const AV1Frame *src)
@ -422,6 +453,7 @@ static int av1_frame_ref(AVCodecContext *avctx, AV1Frame *dst, const AV1Frame *s
memcpy(dst->skip_mode_frame_idx,
src->skip_mode_frame_idx,
2 * sizeof(uint8_t));
dst->coded_lossless = src->coded_lossless;
return 0;
@ -693,6 +725,7 @@ static int get_current_frame(AVCodecContext *avctx)
global_motion_params(s);
skip_mode_params(s);
coded_lossless_param(s);
return ret;
}

2
libavcodec/av1dec.h
View File

@ -44,6 +44,8 @@ typedef struct AV1Frame {
uint8_t order_hint;
uint8_t skip_mode_frame_idx[2];
uint8_t coded_lossless;
} AV1Frame;
typedef struct TileGroupInfo {