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avcodec/snowdec: AVMotionVector support

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Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2015-01-20 01:16:25 +01:00
parent e069a4bf20
commit 7873f9aa72
2 changed files with 41 additions and 0 deletions
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5
libavcodec/snow.h
View File

@ -22,6 +22,8 @@
#ifndef AVCODEC_SNOW_H
#define AVCODEC_SNOW_H
#include "libavutil/motion_vector.h"
#include "hpeldsp.h"
#include "me_cmp.h"
#include "qpeldsp.h"
@ -178,6 +180,9 @@ typedef struct SnowContext{
uint8_t *scratchbuf;
uint8_t *emu_edge_buffer;
AVMotionVector *avmv;
int avmv_index;
}SnowContext;
/* Tables */

36
libavcodec/snowdec.c
View File

@ -87,6 +87,26 @@ static av_always_inline void predict_slice_buffered(SnowContext *s, slice_buffer
mb_x - 1, mb_y - 1,
add, 0, plane_index);
}
if(s->avmv && mb_y < mb_h && plane_index == 0)
for(mb_x=0; mb_x<mb_w; mb_x++){
AVMotionVector *avmv = s->avmv + (s->avmv_index++);
const int b_width = s->b_width << s->block_max_depth;
const int b_stride= b_width;
BlockNode *bn= &s->block[mb_x + mb_y*b_stride];
if (bn->type)
continue;
avmv->w = block_w;
avmv->h = block_h;
avmv->dst_x = block_w*mb_x - block_w/2;
avmv->dst_y = block_h*mb_y - block_h/2;
avmv->src_x = avmv->dst_x + (bn->mx * s->mv_scale)/8;
avmv->src_y = avmv->dst_y + (bn->my * s->mv_scale)/8;
avmv->source= -1 - bn->ref;
avmv->flags = 0;
}
}
static inline void decode_subband_slice_buffered(SnowContext *s, SubBand *b, slice_buffer * sb, int start_y, int h, int save_state[1]){
@ -455,6 +475,12 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame,
s->spatial_decomposition_count
);
av_assert0(!s->avmv);
if (s->avctx->flags2 & CODEC_FLAG2_EXPORT_MVS) {
s->avmv = av_malloc_array(s->b_width * s->b_height, sizeof(AVMotionVector) << (s->block_max_depth*2));
}
s->avmv_index = 0;
if ((res = decode_blocks(s)) < 0)
return res;
@ -573,6 +599,16 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame,
res = av_frame_ref(picture, s->current_picture);
else
res = av_frame_ref(picture, s->mconly_picture);
if (res >= 0 && s->avmv_index) {
AVFrameSideData *sd;
sd = av_frame_new_side_data(picture, AV_FRAME_DATA_MOTION_VECTORS, s->avmv_index * sizeof(AVMotionVector));
if (!sd)
return AVERROR(ENOMEM);
memcpy(sd->data, s->avmv, s->avmv_index * sizeof(AVMotionVector));
}
av_freep(&s->avmv);
if (res < 0)
return res;