* RV30/40 decoder common data
* Copyright (c) 2007 Mike Melanson, Konstantin Shishkov
*
- * This file is part of Libav.
+ * This file is part of FFmpeg.
*
- * Libav is free software; you can redistribute it and/or
+ * FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
- * Libav is distributed in the hope that it will be useful,
+ * FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
- * License along with Libav; if not, write to the Free Software
+ * License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
* Get one coefficient value from the bistream and store it.
*/
-static inline void decode_coeff(DCTELEM *dst, int coef, int esc, GetBitContext *gb, VLC* vlc)
+static inline void decode_coeff(DCTELEM *dst, int coef, int esc, GetBitContext *gb, VLC* vlc, int q)
{
if(coef){
if(coef == esc){
}
if(get_bits1(gb))
coef = -coef;
- *dst = coef;
+ *dst = (coef*q + 8) >> 4;
}
}
/**
* Decode 2x2 subblock of coefficients.
*/
-static inline void decode_subblock(DCTELEM *dst, int code, const int is_block2, GetBitContext *gb, VLC *vlc)
+static inline void decode_subblock(DCTELEM *dst, int code, const int is_block2, GetBitContext *gb, VLC *vlc, int q)
{
int coeffs[4];
coeffs[1] = modulo_three_table[code][1];
coeffs[2] = modulo_three_table[code][2];
coeffs[3] = modulo_three_table[code][3];
- decode_coeff(dst , coeffs[0], 3, gb, vlc);
+ decode_coeff(dst , coeffs[0], 3, gb, vlc, q);
if(is_block2){
- decode_coeff(dst+8, coeffs[1], 2, gb, vlc);
- decode_coeff(dst+1, coeffs[2], 2, gb, vlc);
+ decode_coeff(dst+8, coeffs[1], 2, gb, vlc, q);
+ decode_coeff(dst+1, coeffs[2], 2, gb, vlc, q);
}else{
- decode_coeff(dst+1, coeffs[1], 2, gb, vlc);
- decode_coeff(dst+8, coeffs[2], 2, gb, vlc);
+ decode_coeff(dst+1, coeffs[1], 2, gb, vlc, q);
+ decode_coeff(dst+8, coeffs[2], 2, gb, vlc, q);
}
- decode_coeff(dst+9, coeffs[3], 2, gb, vlc);
+ decode_coeff(dst+9, coeffs[3], 2, gb, vlc, q);
+}
+
+static inline void decode_subblock3(DCTELEM *dst, int code, const int is_block2, GetBitContext *gb, VLC *vlc,
+ int q_dc, int q_ac1, int q_ac2)
+{
+ int coeffs[4];
+
+ coeffs[0] = modulo_three_table[code][0];
+ coeffs[1] = modulo_three_table[code][1];
+ coeffs[2] = modulo_three_table[code][2];
+ coeffs[3] = modulo_three_table[code][3];
+ decode_coeff(dst , coeffs[0], 3, gb, vlc, q_dc);
+ if(is_block2){
+ decode_coeff(dst+8, coeffs[1], 2, gb, vlc, q_ac1);
+ decode_coeff(dst+1, coeffs[2], 2, gb, vlc, q_ac1);
+ }else{
+ decode_coeff(dst+1, coeffs[1], 2, gb, vlc, q_ac1);
+ decode_coeff(dst+8, coeffs[2], 2, gb, vlc, q_ac1);
+ }
+ decode_coeff(dst+9, coeffs[3], 2, gb, vlc, q_ac2);
}
/**
* o--o
*/
-static inline void rv34_decode_block(DCTELEM *dst, GetBitContext *gb, RV34VLC *rvlc, int fc, int sc)
+static inline void rv34_decode_block(DCTELEM *dst, GetBitContext *gb, RV34VLC *rvlc, int fc, int sc, int q_dc, int q_ac1, int q_ac2)
{
int code, pattern;
pattern = code & 0x7;
code >>= 3;
- decode_subblock(dst, code, 0, gb, &rvlc->coefficient);
+ decode_subblock3(dst, code, 0, gb, &rvlc->coefficient, q_dc, q_ac1, q_ac2);
if(pattern & 4){
code = get_vlc2(gb, rvlc->second_pattern[sc].table, 9, 2);
- decode_subblock(dst + 2, code, 0, gb, &rvlc->coefficient);
+ decode_subblock(dst + 2, code, 0, gb, &rvlc->coefficient, q_ac2);
}
if(pattern & 2){ // Looks like coefficients 1 and 2 are swapped for this block
code = get_vlc2(gb, rvlc->second_pattern[sc].table, 9, 2);
- decode_subblock(dst + 8*2, code, 1, gb, &rvlc->coefficient);
+ decode_subblock(dst + 8*2, code, 1, gb, &rvlc->coefficient, q_ac2);
}
if(pattern & 1){
code = get_vlc2(gb, rvlc->third_pattern[sc].table, 9, 2);
- decode_subblock(dst + 8*2+2, code, 0, gb, &rvlc->coefficient);
+ decode_subblock(dst + 8*2+2, code, 0, gb, &rvlc->coefficient, q_ac2);
}
}
-/**
- * Dequantize 4x4 block of DC values for 16x16 macroblock.
- * @todo optimize
- */
-static inline void rv34_dequant4x4_16x16(DCTELEM *block, int Qdc, int Q)
-{
- int i;
-
- for(i = 0; i < 3; i++)
- block[rv34_dezigzag[i]] = (block[rv34_dezigzag[i]] * Qdc + 8) >> 4;
- for(; i < 16; i++)
- block[rv34_dezigzag[i]] = (block[rv34_dezigzag[i]] * Q + 8) >> 4;
-}
-/** @} */ //block functions
-
-
/**
* @name RV30/40 bitstream parsing
* @{
srcY += src_y * s->linesize + src_x;
srcU += uvsrc_y * s->uvlinesize + uvsrc_x;
srcV += uvsrc_y * s->uvlinesize + uvsrc_x;
- if( (unsigned)(src_x - !!lx*2) > s->h_edge_pos - !!lx*2 - (width <<3) - 4
- || (unsigned)(src_y - !!ly*2) > s->v_edge_pos - !!ly*2 - (height<<3) - 4){
+ if(s->h_edge_pos - (width << 3) < 6 || s->v_edge_pos - (height << 3) < 6 ||
+ (unsigned)(src_x - !!lx*2) > s->h_edge_pos - !!lx*2 - (width <<3) - 4 ||
+ (unsigned)(src_y - !!ly*2) > s->v_edge_pos - !!ly*2 - (height<<3) - 4) {
uint8_t *uvbuf = s->edge_emu_buffer + 22 * s->linesize;
srcY -= 2 + 2*s->linesize;
MpegEncContext *s = &r->s;
GetBitContext *gb = &s->gb;
int cbp, cbp2;
+ int q_dc, q_ac;
int i, blknum, blkoff;
LOCAL_ALIGNED_16(DCTELEM, block16, [64]);
int luma_dc_quant;
luma_dc_quant = r->block_type == RV34_MB_P_MIX16x16 ? r->luma_dc_quant_p[s->qscale] : r->luma_dc_quant_i[s->qscale];
if(r->is16){
+ q_dc = rv34_qscale_tab[luma_dc_quant];
+ q_ac = rv34_qscale_tab[s->qscale];
memset(block16, 0, 64 * sizeof(*block16));
- rv34_decode_block(block16, gb, r->cur_vlcs, 3, 0);
- rv34_dequant4x4_16x16(block16, rv34_qscale_tab[luma_dc_quant],rv34_qscale_tab[s->qscale]);
+ rv34_decode_block(block16, gb, r->cur_vlcs, 3, 0, q_dc, q_dc, q_ac);
r->rdsp.rv34_inv_transform_tab[1](block16);
}
+ q_ac = rv34_qscale_tab[s->qscale];
for(i = 0; i < 16; i++, cbp >>= 1){
if(!r->is16 && !(cbp & 1)) continue;
blknum = ((i & 2) >> 1) + ((i & 8) >> 2);
blkoff = ((i & 1) << 2) + ((i & 4) << 3);
if(cbp & 1)
- rv34_decode_block(s->block[blknum] + blkoff, gb, r->cur_vlcs, r->luma_vlc, 0);
- r->rdsp.rv34_dequant4x4(s->block[blknum] + blkoff, rv34_qscale_tab[s->qscale],rv34_qscale_tab[s->qscale]);
+ rv34_decode_block(s->block[blknum] + blkoff, gb,
+ r->cur_vlcs, r->luma_vlc, 0, q_ac, q_ac, q_ac);
if(r->is16) //FIXME: optimize
s->block[blknum][blkoff] = block16[(i & 3) | ((i & 0xC) << 1)];
r->rdsp.rv34_inv_transform_tab[0](s->block[blknum] + blkoff);
}
if(r->block_type == RV34_MB_P_MIX16x16)
r->cur_vlcs = choose_vlc_set(r->si.quant, r->si.vlc_set, 1);
+ q_dc = rv34_qscale_tab[rv34_chroma_quant[1][s->qscale]];
+ q_ac = rv34_qscale_tab[rv34_chroma_quant[0][s->qscale]];
for(; i < 24; i++, cbp >>= 1){
if(!(cbp & 1)) continue;
blknum = ((i & 4) >> 2) + 4;
blkoff = ((i & 1) << 2) + ((i & 2) << 4);
- rv34_decode_block(s->block[blknum] + blkoff, gb, r->cur_vlcs, r->chroma_vlc, 1);
- r->rdsp.rv34_dequant4x4(s->block[blknum] + blkoff, rv34_qscale_tab[rv34_chroma_quant[1][s->qscale]],rv34_qscale_tab[rv34_chroma_quant[0][s->qscale]]);
+ rv34_decode_block(s->block[blknum] + blkoff, gb, r->cur_vlcs, r->chroma_vlc, 1, q_dc, q_ac, q_ac);
r->rdsp.rv34_inv_transform_tab[0](s->block[blknum] + blkoff);
}
if (IS_INTRA(s->current_picture_ptr->f.mb_type[mb_pos]))
av_log(s->avctx, AV_LOG_ERROR, "Slice type mismatch\n");
return AVERROR_INVALIDDATA;
}
+ if (s->width != r->si.width || s->height != r->si.height) {
+ av_log(s->avctx, AV_LOG_ERROR, "Size mismatch\n");
+ return AVERROR_INVALIDDATA;
+ }
}
r->si.end = end;
projects / ffmpeg / blobdiff