diff options
Diffstat (limited to 'libavcodec/av1dec.c')
-rw-r--r-- | libavcodec/av1dec.c | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/libavcodec/av1dec.c b/libavcodec/av1dec.c index 356e226de0..7185ad827c 100644 --- a/libavcodec/av1dec.c +++ b/libavcodec/av1dec.c @@ -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; } |