*/
/**
- * @file rv30.c
+ * @file libavcodec/rv30.c
* RV30 decoder
*/
int mb_bits;
int w = r->s.width, h = r->s.height;
int mb_size;
+ int rpr;
memset(si, 0, sizeof(SliceInfo));
- skip_bits(gb, 3);
+ if(get_bits(gb, 3))
+ return -1;
si->type = get_bits(gb, 2);
if(si->type == 1) si->type = 0;
if(get_bits1(gb))
return -1;
si->quant = get_bits(gb, 5);
skip_bits1(gb);
- skip_bits(gb, 13); // timestamp
- skip_bits(gb, r->rpr);
+ si->pts = get_bits(gb, 13);
+ rpr = get_bits(gb, r->rpr);
+ if(rpr){
+ w = r->s.avctx->extradata[6 + rpr*2] << 2;
+ h = r->s.avctx->extradata[7 + rpr*2] << 2;
+ }
si->width = w;
si->height = h;
mb_size = ((w + 15) >> 4) * ((h + 15) >> 4);
return rv30_b_types[code];
}
+static inline void rv30_weak_loop_filter(uint8_t *src, const int step,
+ const int stride, const int lim)
+{
+ uint8_t *cm = ff_cropTbl + MAX_NEG_CROP;
+ int i, diff;
+
+ for(i = 0; i < 4; i++){
+ diff = ((src[-2*step] - src[1*step]) - (src[-1*step] - src[0*step])*4) >> 3;
+ diff = av_clip(diff, -lim, lim);
+ src[-1*step] = cm[src[-1*step] + diff];
+ src[ 0*step] = cm[src[ 0*step] - diff];
+ src += stride;
+ }
+}
+
+static void rv30_loop_filter(RV34DecContext *r, int row)
+{
+ MpegEncContext *s = &r->s;
+ int mb_pos, mb_x;
+ int i, j, k;
+ uint8_t *Y, *C;
+ int loc_lim, cur_lim, left_lim = 0, top_lim = 0;
+
+ mb_pos = row * s->mb_stride;
+ for(mb_x = 0; mb_x < s->mb_width; mb_x++, mb_pos++){
+ int mbtype = s->current_picture_ptr->mb_type[mb_pos];
+ if(IS_INTRA(mbtype) || IS_SEPARATE_DC(mbtype))
+ r->deblock_coefs[mb_pos] = 0xFFFF;
+ if(IS_INTRA(mbtype))
+ r->cbp_chroma[mb_pos] = 0xFF;
+ }
+
+ /* all vertical edges are filtered first
+ * and horizontal edges are filtered on the next iteration
+ */
+ mb_pos = row * s->mb_stride;
+ for(mb_x = 0; mb_x < s->mb_width; mb_x++, mb_pos++){
+ cur_lim = rv30_loop_filt_lim[s->current_picture_ptr->qscale_table[mb_pos]];
+ if(mb_x)
+ left_lim = rv30_loop_filt_lim[s->current_picture_ptr->qscale_table[mb_pos - 1]];
+ for(j = 0; j < 16; j += 4){
+ Y = s->current_picture_ptr->data[0] + mb_x*16 + (row*16 + j) * s->linesize + 4 * !mb_x;
+ for(i = !mb_x; i < 4; i++, Y += 4){
+ int ij = i + j;
+ loc_lim = 0;
+ if(r->deblock_coefs[mb_pos] & (1 << ij))
+ loc_lim = cur_lim;
+ else if(!i && r->deblock_coefs[mb_pos - 1] & (1 << (ij + 3)))
+ loc_lim = left_lim;
+ else if( i && r->deblock_coefs[mb_pos] & (1 << (ij - 1)))
+ loc_lim = cur_lim;
+ if(loc_lim)
+ rv30_weak_loop_filter(Y, 1, s->linesize, loc_lim);
+ }
+ }
+ for(k = 0; k < 2; k++){
+ int cur_cbp, left_cbp = 0;
+ cur_cbp = (r->cbp_chroma[mb_pos] >> (k*4)) & 0xF;
+ if(mb_x)
+ left_cbp = (r->cbp_chroma[mb_pos - 1] >> (k*4)) & 0xF;
+ for(j = 0; j < 8; j += 4){
+ C = s->current_picture_ptr->data[k+1] + mb_x*8 + (row*8 + j) * s->uvlinesize + 4 * !mb_x;
+ for(i = !mb_x; i < 2; i++, C += 4){
+ int ij = i + (j >> 1);
+ loc_lim = 0;
+ if(cur_cbp && (1 << ij))
+ loc_lim = cur_lim;
+ else if(!i && left_cbp & (1 << (ij + 1)))
+ loc_lim = left_lim;
+ else if( i && cur_cbp & (1 << (ij - 1)))
+ loc_lim = cur_lim;
+ if(loc_lim)
+ rv30_weak_loop_filter(C, 1, s->uvlinesize, loc_lim);
+ }
+ }
+ }
+ }
+ mb_pos = row * s->mb_stride;
+ for(mb_x = 0; mb_x < s->mb_width; mb_x++, mb_pos++){
+ cur_lim = rv30_loop_filt_lim[s->current_picture_ptr->qscale_table[mb_pos]];
+ if(row)
+ top_lim = rv30_loop_filt_lim[s->current_picture_ptr->qscale_table[mb_pos - s->mb_stride]];
+ for(j = 4*!row; j < 16; j += 4){
+ Y = s->current_picture_ptr->data[0] + mb_x*16 + (row*16 + j) * s->linesize;
+ for(i = 0; i < 4; i++, Y += 4){
+ int ij = i + j;
+ loc_lim = 0;
+ if(r->deblock_coefs[mb_pos] & (1 << ij))
+ loc_lim = cur_lim;
+ else if(!j && r->deblock_coefs[mb_pos - s->mb_stride] & (1 << (ij + 12)))
+ loc_lim = top_lim;
+ else if( j && r->deblock_coefs[mb_pos] & (1 << (ij - 4)))
+ loc_lim = cur_lim;
+ if(loc_lim)
+ rv30_weak_loop_filter(Y, s->linesize, 1, loc_lim);
+ }
+ }
+ for(k = 0; k < 2; k++){
+ int cur_cbp, top_cbp = 0;
+ cur_cbp = (r->cbp_chroma[mb_pos] >> (k*4)) & 0xF;
+ if(row)
+ top_cbp = (r->cbp_chroma[mb_pos - s->mb_stride] >> (k*4)) & 0xF;
+ for(j = 4*!row; j < 8; j += 4){
+ C = s->current_picture_ptr->data[k+1] + mb_x*8 + (row*8 + j) * s->uvlinesize;
+ for(i = 0; i < 2; i++, C += 4){
+ int ij = i + (j >> 1);
+ loc_lim = 0;
+ if(r->cbp_chroma[mb_pos] && (1 << ij))
+ loc_lim = cur_lim;
+ else if(!j && top_cbp & (1 << (ij + 2)))
+ loc_lim = top_lim;
+ else if( j && cur_cbp & (1 << (ij - 2)))
+ loc_lim = cur_lim;
+ if(loc_lim)
+ rv30_weak_loop_filter(C, s->uvlinesize, 1, loc_lim);
+ }
+ }
+ }
+ }
+}
+
/**
* Initialize decoder.
*/
}
r->rpr = (avctx->extradata[1] & 7) >> 1;
r->rpr = FFMIN(r->rpr + 1, 3);
+ if(avctx->extradata_size - 8 < (r->rpr - 1) * 2){
+ av_log(avctx, AV_LOG_ERROR, "Insufficient extradata - need at least %d bytes, got %d\n",
+ 6 + r->rpr * 2, avctx->extradata_size);
+ }
r->parse_slice_header = rv30_parse_slice_header;
r->decode_intra_types = rv30_decode_intra_types;
r->decode_mb_info = rv30_decode_mb_info;
+ r->loop_filter = rv30_loop_filter;
r->luma_dc_quant_i = rv30_luma_dc_quant;
r->luma_dc_quant_p = rv30_luma_dc_quant;
return 0;
ff_rv34_decode_end,
ff_rv34_decode_frame,
CODEC_CAP_DR1 | CODEC_CAP_DELAY,
+ .flush = ff_mpeg_flush,
+ .long_name = NULL_IF_CONFIG_SMALL("RealVideo 3.0"),
+ .pix_fmts= ff_pixfmt_list_420,
};
projects / frescor / ffmpeg.git / blobdiff