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Code Issues Releases Activity

vp9dec: support exporting QP tables through the AVVideoEncParams API

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This commit is contained in:
Anton Khirnov 2020-03-23 16:09:48 +01:00
parent c90f57c673
commit ffae62d96c
4 changed files with 102 additions and 0 deletions
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72
libavcodec/vp9.c
View File

@ -34,6 +34,7 @@
#include "vp9dec.h"
#include "libavutil/avassert.h"
#include "libavutil/pixdesc.h"
#include "libavutil/video_enc_params.h"
#define VP9_SYNCCODE 0x498342
@ -97,6 +98,7 @@ static void vp9_tile_data_free(VP9TileData *td)
{
av_freep(&td->b_base);
av_freep(&td->block_base);
av_freep(&td->block_structure);
}
static void vp9_frame_unref(AVCodecContext *avctx, VP9Frame *f)
@ -326,6 +328,12 @@ static int update_block_buffers(AVCodecContext *avctx)
td->eob_base = (uint8_t *) (td->uvblock_base[1] + sbs * chroma_blocks * bytesperpixel);
td->uveob_base[0] = td->eob_base + 16 * 16 * sbs;
td->uveob_base[1] = td->uveob_base[0] + chroma_eobs * sbs;
if (avctx->export_side_data & AV_CODEC_EXPORT_DATA_VIDEO_ENC_PARAMS) {
td->block_structure = av_malloc_array(s->cols * s->rows, sizeof(*td->block_structure));
if (!td->block_structure)
return AVERROR(ENOMEM);
}
} else {
for (i = 1; i < s->active_tile_cols; i++)
vp9_tile_data_free(&s->td[i]);
@ -341,6 +349,12 @@ static int update_block_buffers(AVCodecContext *avctx)
s->td[i].eob_base = (uint8_t *) (s->td[i].uvblock_base[1] + chroma_blocks * bytesperpixel);
s->td[i].uveob_base[0] = s->td[i].eob_base + 16 * 16;
s->td[i].uveob_base[1] = s->td[i].uveob_base[0] + chroma_eobs;
if (avctx->export_side_data & AV_CODEC_EXPORT_DATA_VIDEO_ENC_PARAMS) {
s->td[i].block_structure = av_malloc_array(s->cols * s->rows, sizeof(*td->block_structure));
if (!s->td[i].block_structure)
return AVERROR(ENOMEM);
}
}
}
s->block_alloc_using_2pass = s->s.frames[CUR_FRAME].uses_2pass;
@ -880,6 +894,7 @@ static int decode_frame_header(AVCodecContext *avctx,
} else {
memset(&s->td[i].counts, 0, sizeof(s->td[0].counts));
}
s->td[i].nb_block_structure = 0;
}
/* FIXME is it faster to not copy here, but do it down in the fw updates
@ -1481,6 +1496,58 @@ int loopfilter_proc(AVCodecContext *avctx)
}
#endif
static int vp9_export_enc_params(VP9Context *s, VP9Frame *frame)
{
AVVideoEncParams *par;
unsigned int tile, nb_blocks = 0;
if (s->s.h.segmentation.enabled) {
for (tile = 0; tile < s->active_tile_cols; tile++)
nb_blocks += s->td[tile].nb_block_structure;
}
par = av_video_enc_params_create_side_data(frame->tf.f,
AV_VIDEO_ENC_PARAMS_VP9, nb_blocks);
if (!par)
return AVERROR(ENOMEM);
par->qp = s->s.h.yac_qi;
par->delta_qp[0][0] = s->s.h.ydc_qdelta;
par->delta_qp[1][0] = s->s.h.uvdc_qdelta;
par->delta_qp[2][0] = s->s.h.uvdc_qdelta;
par->delta_qp[1][1] = s->s.h.uvac_qdelta;
par->delta_qp[2][1] = s->s.h.uvac_qdelta;
if (nb_blocks) {
unsigned int block = 0;
unsigned int tile, block_tile;
for (tile = 0; tile < s->active_tile_cols; tile++) {
VP9TileData *td = &s->td[tile];
for (block_tile = 0; block_tile < td->nb_block_structure; block_tile++) {
AVVideoBlockParams *b = av_video_enc_params_block(par, block++);
unsigned int row = td->block_structure[block_tile].row;
unsigned int col = td->block_structure[block_tile].col;
uint8_t seg_id = frame->segmentation_map[row * 8 * s->sb_cols + col];
b->src_x = col * 8;
b->src_y = row * 8;
b->w = 1 << (3 + td->block_structure[block_tile].block_size_idx_x);
b->h = 1 << (3 + td->block_structure[block_tile].block_size_idx_y);
if (s->s.h.segmentation.feat[seg_id].q_enabled) {
b->delta_qp = s->s.h.segmentation.feat[seg_id].q_val;
if (s->s.h.segmentation.absolute_vals)
b->delta_qp -= par->qp;
}
}
}
}
return 0;
}
static int vp9_decode_frame(AVCodecContext *avctx, void *frame,
int *got_frame, AVPacket *pkt)
{
@ -1689,6 +1756,11 @@ FF_ENABLE_DEPRECATION_WARNINGS
s->td->error_info = 0;
return AVERROR_INVALIDDATA;
}
if (avctx->export_side_data & AV_CODEC_EXPORT_DATA_VIDEO_ENC_PARAMS) {
ret = vp9_export_enc_params(s, &s->s.frames[CUR_FRAME]);
if (ret < 0)
return ret;
}
finish:
// ref frame setup

8
libavcodec/vp9block.c
View File

@ -1290,6 +1290,14 @@ void ff_vp9_decode_block(VP9TileData *td, int row, int col,
b->uvtx = b->tx - ((s->ss_h && w4 * 2 == (1 << b->tx)) ||
(s->ss_v && h4 * 2 == (1 << b->tx)));
if (td->block_structure) {
td->block_structure[td->nb_block_structure].row = row;
td->block_structure[td->nb_block_structure].col = col;
td->block_structure[td->nb_block_structure].block_size_idx_x = av_log2(w4);
td->block_structure[td->nb_block_structure].block_size_idx_y = av_log2(h4);
td->nb_block_structure++;
}
if (!b->skip) {
int has_coeffs;

7
libavcodec/vp9dec.h
View File

@ -226,6 +226,13 @@ struct VP9TileData {
// error message
int error_info;
struct {
unsigned int row:13;
unsigned int col:13;
unsigned int block_size_idx_x:2;
unsigned int block_size_idx_y:2;
} *block_structure;
unsigned int nb_block_structure;
};
void ff_vp9_fill_mv(VP9TileData *td, VP56mv *mv, int mode, int sb);

15
libavutil/video_enc_params.h
View File

@ -27,6 +27,21 @@
enum AVVideoEncParamsType {
AV_VIDEO_ENC_PARAMS_NONE = -1,
/**
* VP9 stores:
* - per-frame base (luma AC) quantizer index, exported as AVVideoEncParams.qp
* - deltas for luma DC, chroma AC and chroma DC, exported in the
* corresponding entries in AVVideoEncParams.delta_qp
* - per-segment delta, exported as for each block as AVVideoBlockParams.delta_qp
*
* To compute the resulting quantizer index for a block:
* - for luma AC, add the base qp and the per-block delta_qp, saturating to
* unsigned 8-bit.
* - for luma DC and chroma AC/DC, add the corresponding
* AVVideoBlockParams.delta_qp to the luma AC index, again saturating to
* unsigned 8-bit.
*/
AV_VIDEO_ENC_PARAMS_VP9,
};
/**