/*
* Copyright (C) 2003-2004 the ffmpeg project
*
- * This library is free software; you can redistribute it and/or
+ * This file is part of FFmpeg.
+ *
+ * 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 of the License, or (at your option) any later version.
+ * version 2.1 of the License, or (at your option) any later version.
*
- * This library 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 this library; 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
*
*/
int last_coded_c_fragment;
uint8_t edge_emu_buffer[9*2048]; //FIXME dynamic alloc
- uint8_t qscale_table[2048]; //FIXME dynamic alloc (width+15)/16
+ int8_t qscale_table[2048]; //FIXME dynamic alloc (width+15)/16
/* Huffman decode */
int hti;
static int init_block_mapping(Vp3DecodeContext *s)
{
int i, j;
- signed int hilbert_walk_y[16];
- signed int hilbert_walk_c[16];
signed int hilbert_walk_mb[4];
int current_fragment = 0;
debug_vp3(" vp3: initialize block mapping tables\n");
- /* figure out hilbert pattern per these frame dimensions */
- hilbert_walk_y[0] = 1;
- hilbert_walk_y[1] = 1;
- hilbert_walk_y[2] = s->fragment_width;
- hilbert_walk_y[3] = -1;
- hilbert_walk_y[4] = s->fragment_width;
- hilbert_walk_y[5] = s->fragment_width;
- hilbert_walk_y[6] = 1;
- hilbert_walk_y[7] = -s->fragment_width;
- hilbert_walk_y[8] = 1;
- hilbert_walk_y[9] = s->fragment_width;
- hilbert_walk_y[10] = 1;
- hilbert_walk_y[11] = -s->fragment_width;
- hilbert_walk_y[12] = -s->fragment_width;
- hilbert_walk_y[13] = -1;
- hilbert_walk_y[14] = -s->fragment_width;
- hilbert_walk_y[15] = 1;
-
- hilbert_walk_c[0] = 1;
- hilbert_walk_c[1] = 1;
- hilbert_walk_c[2] = s->fragment_width / 2;
- hilbert_walk_c[3] = -1;
- hilbert_walk_c[4] = s->fragment_width / 2;
- hilbert_walk_c[5] = s->fragment_width / 2;
- hilbert_walk_c[6] = 1;
- hilbert_walk_c[7] = -s->fragment_width / 2;
- hilbert_walk_c[8] = 1;
- hilbert_walk_c[9] = s->fragment_width / 2;
- hilbert_walk_c[10] = 1;
- hilbert_walk_c[11] = -s->fragment_width / 2;
- hilbert_walk_c[12] = -s->fragment_width / 2;
- hilbert_walk_c[13] = -1;
- hilbert_walk_c[14] = -s->fragment_width / 2;
- hilbert_walk_c[15] = 1;
-
hilbert_walk_mb[0] = 1;
hilbert_walk_mb[1] = s->macroblock_width;
hilbert_walk_mb[2] = 1;
current_height = 0;
superblock_row_inc = 3 * s->fragment_width -
(s->y_superblock_width * 4 - s->fragment_width);
- hilbert = hilbert_walk_y;
/* the first operation for this variable is to advance by 1 */
current_fragment = -1;
current_height = 0;
superblock_row_inc = 3 * (s->fragment_width / 2) -
(s->c_superblock_width * 4 - s->fragment_width / 2);
- hilbert = hilbert_walk_c;
/* the first operation for this variable is to advance by 1 */
current_fragment = s->fragment_start[1] - 1;
current_height = 0;
superblock_row_inc = 3 * (s->fragment_width / 2) -
(s->c_superblock_width * 4 - s->fragment_width / 2);
- hilbert = hilbert_walk_c;
/* the first operation for this variable is to advance by 1 */
current_fragment = s->fragment_start[2] - 1;
/* iterate through all 16 fragments in a superblock */
for (j = 0; j < 16; j++) {
- current_fragment += hilbert[j];
+ current_fragment += travel_width[j] + right_edge * travel_height[j];
current_width += travel_width[j];
current_height += travel_height[j];
{
int ac_scale_factor = s->coded_ac_scale_factor[s->quality_index];
int dc_scale_factor = s->coded_dc_scale_factor[s->quality_index];
- int i, j, plane, inter, qri, bmi, bmj, qistart;
+ int i, plane, inter, qri, bmi, bmj, qistart;
debug_vp3(" vp3: initializing dequantization tables\n");
int x, y;
int i = first_fragment;
- short predicted_dc;
-
- /* validity flags for the left, up-left, up, and up-right fragments */
- int fl, ful, fu, fur;
+ int predicted_dc;
/* DC values for the left, up-left, up, and up-right fragments */
int vl, vul, vu, vur;
* 1: up multiplier
* 2: up-right multiplier
* 3: left multiplier
- * 4: mask
- * 5: right bit shift divisor (e.g., 7 means >>=7, a.k.a. div by 128)
*/
- int predictor_transform[16][6] = {
- { 0, 0, 0, 0, 0, 0 },
- { 0, 0, 0, 1, 0, 0 }, // PL
- { 0, 0, 1, 0, 0, 0 }, // PUR
- { 0, 0, 53, 75, 127, 7 }, // PUR|PL
- { 0, 1, 0, 0, 0, 0 }, // PU
- { 0, 1, 0, 1, 1, 1 }, // PU|PL
- { 0, 1, 0, 0, 0, 0 }, // PU|PUR
- { 0, 0, 53, 75, 127, 7 }, // PU|PUR|PL
- { 1, 0, 0, 0, 0, 0 }, // PUL
- { 0, 0, 0, 1, 0, 0 }, // PUL|PL
- { 1, 0, 1, 0, 1, 1 }, // PUL|PUR
- { 0, 0, 53, 75, 127, 7 }, // PUL|PUR|PL
- { 0, 1, 0, 0, 0, 0 }, // PUL|PU
- {-26, 29, 0, 29, 31, 5 }, // PUL|PU|PL
- { 3, 10, 3, 0, 15, 4 }, // PUL|PU|PUR
- {-26, 29, 0, 29, 31, 5 } // PUL|PU|PUR|PL
+ int predictor_transform[16][4] = {
+ { 0, 0, 0, 0},
+ { 0, 0, 0,128}, // PL
+ { 0, 0,128, 0}, // PUR
+ { 0, 0, 53, 75}, // PUR|PL
+ { 0,128, 0, 0}, // PU
+ { 0, 64, 0, 64}, // PU|PL
+ { 0,128, 0, 0}, // PU|PUR
+ { 0, 0, 53, 75}, // PU|PUR|PL
+ {128, 0, 0, 0}, // PUL
+ { 0, 0, 0,128}, // PUL|PL
+ { 64, 0, 64, 0}, // PUL|PUR
+ { 0, 0, 53, 75}, // PUL|PUR|PL
+ { 0,128, 0, 0}, // PUL|PU
+ {-104,116, 0,116}, // PUL|PU|PL
+ { 24, 80, 24, 0}, // PUL|PU|PUR
+ {-104,116, 0,116} // PUL|PU|PUR|PL
};
/* This table shows which types of blocks can use other blocks for
current_frame_type =
compatible_frame[s->all_fragments[i].coding_method];
- debug_dc_pred(" frag %d: group %d, orig DC = %d, ",
- i, -1, DC_COEFF(i));
+ debug_dc_pred(" frag %d: orig DC = %d, ",
+ i, DC_COEFF(i));
transform= 0;
if(x){
l= i-1;
vl = DC_COEFF(l);
- fl = FRAME_CODED(l) && COMPATIBLE_FRAME(l);
- transform |= fl*PL;
+ if(FRAME_CODED(l) && COMPATIBLE_FRAME(l))
+ transform |= PL;
}
if(y){
u= i-fragment_width;
vu = DC_COEFF(u);
- fu = FRAME_CODED(u) && COMPATIBLE_FRAME(u);
- transform |= fu*PU;
+ if(FRAME_CODED(u) && COMPATIBLE_FRAME(u))
+ transform |= PU;
if(x){
ul= i-fragment_width-1;
vul = DC_COEFF(ul);
- ful = FRAME_CODED(ul) && COMPATIBLE_FRAME(ul);
- transform |= ful*PUL;
+ if(FRAME_CODED(ul) && COMPATIBLE_FRAME(ul))
+ transform |= PUL;
}
if(x + 1 < fragment_width){
ur= i-fragment_width+1;
vur = DC_COEFF(ur);
- fur = FRAME_CODED(ur) && COMPATIBLE_FRAME(ur);
- transform |= fur*PUR;
+ if(FRAME_CODED(ur) && COMPATIBLE_FRAME(ur))
+ transform |= PUR;
}
}
(predictor_transform[transform][2] * vur) +
(predictor_transform[transform][3] * vl);
- /* if there is a shift value in the transform, add
- * the sign bit before the shift */
- if (predictor_transform[transform][5] != 0) {
- predicted_dc += ((predicted_dc >> 15) &
- predictor_transform[transform][4]);
- predicted_dc >>= predictor_transform[transform][5];
- }
+ predicted_dc /= 128;
/* check for outranging on the [ul u l] and
* [ul u ur l] predictors */
if (!s->theora_tables)
{
- for (i = 0; i < 64; i++)
+ for (i = 0; i < 64; i++) {
s->coded_dc_scale_factor[i] = vp31_dc_scale_factor[i];
- for (i = 0; i < 64; i++)
s->coded_ac_scale_factor[i] = vp31_ac_scale_factor[i];
- for (i = 0; i < 64; i++)
s->base_matrix[0][i] = vp31_intra_y_dequant[i];
- for (i = 0; i < 64; i++)
s->base_matrix[1][i] = vp31_intra_c_dequant[i];
- for (i = 0; i < 64; i++)
s->base_matrix[2][i] = vp31_inter_dequant[i];
- for (i = 0; i < 64; i++)
s->filter_limit_values[i] = vp31_filter_limit_values[i];
+ }
for(inter=0; inter<2; inter++){
for(plane=0; plane<3; plane++){
vp3_calculate_pixel_addresses(s);
else
theora_calculate_pixel_addresses(s);
+ s->pixel_addresses_inited = 1;
}
} else {
/* allocate a new current frame */
s->current_frame.reference = 3;
+ if (!s->pixel_addresses_inited) {
+ av_log(s->avctx, AV_LOG_ERROR, "vp3: first frame not a keyframe\n");
+ return -1;
+ }
if(avctx->get_buffer(avctx, &s->current_frame) < 0) {
av_log(s->avctx, AV_LOG_ERROR, "vp3: get_buffer() failed\n");
return -1;
projects / ffmpeg / blobdiff