* Copyright (c) 2009 Konstantin Shishkov
* Copyright (C) 2011 Peter Ross <pross@xvid.org>
*
- * 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
*/
*
* @param c decoder context
*/
-static av_cold void init_bundles(BinkContext *c)
+static av_cold int init_bundles(BinkContext *c)
{
int bw, bh, blocks;
int i;
for (i = 0; i < BINKB_NB_SRC; i++) {
c->bundle[i].data = av_malloc(blocks * 64);
+ if (!c->bundle[i].data)
+ return AVERROR(ENOMEM);
c->bundle[i].data_end = c->bundle[i].data + blocks * 64;
}
+
+ return 0;
}
/**
quant_idx = get_bits(gb, 4);
} else {
quant_idx = q;
+ if (quant_idx > 15U) {
+ av_log(NULL, AV_LOG_ERROR, "quant_index %d out of range\n", quant_idx);
+ return AVERROR_INVALIDDATA;
+ }
}
quant = quant_matrices[quant_idx];
memset(dctblock, 0, sizeof(*dctblock) * 64);
dctblock[0] = binkb_get_value(c, BINKB_SRC_INTRA_DC);
qp = binkb_get_value(c, BINKB_SRC_INTRA_Q);
- read_dct_coeffs(gb, dctblock, bink_scan, binkb_intra_quant, qp);
+ read_dct_coeffs(gb, dctblock, bink_scan, (const int32_t (*)[64])binkb_intra_quant, qp);
c->bdsp.idct_put(dst, stride, dctblock);
break;
case 3:
memset(dctblock, 0, sizeof(*dctblock) * 64);
dctblock[0] = binkb_get_value(c, BINKB_SRC_INTER_DC);
qp = binkb_get_value(c, BINKB_SRC_INTER_Q);
- read_dct_coeffs(gb, dctblock, bink_scan, binkb_inter_quant, qp);
+ read_dct_coeffs(gb, dctblock, bink_scan, (const int32_t (*)[64])binkb_inter_quant, qp);
c->bdsp.idct_add(dst, stride, dctblock);
break;
case 5:
xoff = get_value(c, BINK_SRC_X_OFF);
yoff = get_value(c, BINK_SRC_Y_OFF);
ref = prev + xoff + yoff * stride;
+ if (ref < ref_start || ref > ref_end) {
+ av_log(c->avctx, AV_LOG_ERROR, "Copy out of bounds @%d, %d\n",
+ bx*8 + xoff, by*8 + yoff);
+ return -1;
+ }
c->dsp.put_pixels_tab[1][0](dst, ref, stride, 8);
memset(dctblock, 0, sizeof(*dctblock) * 64);
dctblock[0] = get_value(c, BINK_SRC_INTER_DC);
static av_cold void binkb_calc_quant(void)
{
uint8_t inv_bink_scan[64];
- double s[64];
+ static const int s[64]={
+ 1073741824,1489322693,1402911301,1262586814,1073741824, 843633538, 581104888, 296244703,
+ 1489322693,2065749918,1945893874,1751258219,1489322693,1170153332, 806015634, 410903207,
+ 1402911301,1945893874,1832991949,1649649171,1402911301,1102260336, 759250125, 387062357,
+ 1262586814,1751258219,1649649171,1484645031,1262586814, 992008094, 683307060, 348346918,
+ 1073741824,1489322693,1402911301,1262586814,1073741824, 843633538, 581104888, 296244703,
+ 843633538,1170153332,1102260336, 992008094, 843633538, 662838617, 456571181, 232757969,
+ 581104888, 806015634, 759250125, 683307060, 581104888, 456571181, 314491699, 160326478,
+ 296244703, 410903207, 387062357, 348346918, 296244703, 232757969, 160326478, 81733730,
+ };
int i, j;
-
- for (j = 0; j < 8; j++) {
- for (i = 0; i < 8; i++) {
- if (j && j != 4)
- if (i && i != 4)
- s[j*8 + i] = cos(j * M_PI/16.0) * cos(i * M_PI/16.0) * 2.0;
- else
- s[j*8 + i] = cos(j * M_PI/16.0) * sqrt(2.0);
- else
- if (i && i != 4)
- s[j*8 + i] = cos(i * M_PI/16.0) * sqrt(2.0);
- else
- s[j*8 + i] = 1.0;
- }
- }
-
+#define C (1LL<<30)
for (i = 0; i < 64; i++)
inv_bink_scan[bink_scan[i]] = i;
for (j = 0; j < 16; j++) {
for (i = 0; i < 64; i++) {
int k = inv_bink_scan[i];
- if (s[i] == 1.0) {
- binkb_intra_quant[j][k] = (1L << 12) * binkb_intra_seed[i] *
- binkb_num[j]/binkb_den[j];
- binkb_inter_quant[j][k] = (1L << 12) * binkb_inter_seed[i] *
- binkb_num[j]/binkb_den[j];
- } else {
- binkb_intra_quant[j][k] = (1L << 12) * binkb_intra_seed[i] * s[i] *
- binkb_num[j]/(double)binkb_den[j];
- binkb_inter_quant[j][k] = (1L << 12) * binkb_inter_seed[i] * s[i] *
- binkb_num[j]/(double)binkb_den[j];
- }
+ binkb_intra_quant[j][k] = binkb_intra_seed[i] * (int64_t)s[i] *
+ binkb_num[j]/(binkb_den[j] * (C>>12));
+ binkb_inter_quant[j][k] = binkb_inter_seed[i] * (int64_t)s[i] *
+ binkb_num[j]/(binkb_den[j] * (C>>12));
}
}
}
ff_dsputil_init(&c->dsp, avctx);
ff_binkdsp_init(&c->bdsp);
- init_bundles(c);
+ if ((ret = init_bundles(c)) < 0) {
+ free_bundles(c);
+ return ret;
+ }
if (c->version == 'b') {
if (!binkb_initialised) {
projects / ffmpeg / blobdiff