cols = buf[3]; /* number of stored macroblock cols */
/* buf[4] is number of displayed macroblock rows */
/* buf[5] is number of displayed macroblock cols */
+ if (!rows || !cols) {
+ av_log(s->avctx, AV_LOG_ERROR, "Invalid size %dx%d\n", cols << 4, rows << 4);
+ return 0;
+ }
if (!s->macroblocks || /* first frame */
16*cols != s->avctx->coded_width ||
vrt_shift = 5;
s->sub_version = sub_version;
} else {
- if (!s->sub_version)
+ if (!s->sub_version || !s->avctx->coded_width || !s->avctx->coded_height)
return 0;
if (separated_coeff || !s->filter_header) {
model->vector_sig[0] = 0x80;
model->vector_sig[1] = 0x80;
- memcpy(model->mb_types_stats, vp56_def_mb_types_stats, sizeof(model->mb_types_stats));
+ memcpy(model->mb_types_stats, ff_vp56_def_mb_types_stats, sizeof(model->mb_types_stats));
memcpy(model->vector_fdv, vp6_def_fdv_vector_model, sizeof(model->vector_fdv));
memcpy(model->vector_pdv, vp6_def_pdv_vector_model, sizeof(model->vector_pdv));
memcpy(model->coeff_runv, vp6_def_runv_coeff_model, sizeof(model->coeff_runv));
nodes[map[2*i+1]].count = b + !b;
}
- free_vlc(vlc);
+ ff_free_vlc(vlc);
/* then build the huffman tree according to probabilities */
return ff_huff_build_tree(s->avctx, vlc, size, nodes, vp6_huff_cmp,
FF_HUFFMAN_FLAG_HNODE_FIRST);
else
delta |= 8;
} else {
- delta = vp56_rac_get_tree(c, vp56_pva_tree,
+ delta = vp56_rac_get_tree(c, ff_vp56_pva_tree,
model->vector_pdv[comp]);
}
if (b > 3) pt = 1;
vlc_coeff = &s->dccv_vlc[pt];
- for (coeff_idx=0; coeff_idx<64; ) {
+ for (coeff_idx = 0;;) {
int run = 1;
if (coeff_idx<2 && s->nb_null[coeff_idx][pt]) {
s->nb_null[coeff_idx][pt]--;
if (coeff_idx)
break;
} else {
- if (get_bits_count(&s->gb) >= s->gb.size_in_bits)
+ if (get_bits_left(&s->gb) <= 0)
return;
coeff = get_vlc2(&s->gb, vlc_coeff->table, 9, 3);
if (coeff == 0) {
s->nb_null[1][pt] = vp6_get_nb_null(s);
break;
} else {
- int coeff2 = vp56_coeff_bias[coeff];
+ int coeff2 = ff_vp56_coeff_bias[coeff];
if (coeff > 4)
coeff2 += get_bits(&s->gb, coeff <= 9 ? coeff - 4 : 11);
ct = 1 + (coeff2 > 1);
}
}
coeff_idx+=run;
+ if (coeff_idx >= 64)
+ break;
cg = FFMIN(vp6_coeff_groups[coeff_idx], 3);
vlc_coeff = &s->ract_vlc[pt][ct][cg];
}
if (b > 3) pt = 1;
- ctx = s->left_block[vp56_b6to4[b]].not_null_dc
+ ctx = s->left_block[ff_vp56_b6to4[b]].not_null_dc
+ s->above_blocks[s->above_block_idx[b]].not_null_dc;
model1 = model->coeff_dccv[pt];
model2 = model->coeff_dcct[pt][ctx];
- for (coeff_idx=0; coeff_idx<64; ) {
+ coeff_idx = 0;
+ for (;;) {
if ((coeff_idx>1 && ct==0) || vp56_rac_get_prob(c, model2[0])) {
/* parse a coeff */
if (vp56_rac_get_prob(c, model2[2])) {
if (vp56_rac_get_prob(c, model2[3])) {
- idx = vp56_rac_get_tree(c, vp56_pc_tree, model1);
- coeff = vp56_coeff_bias[idx+5];
- for (i=vp56_coeff_bit_length[idx]; i>=0; i--)
- coeff += vp56_rac_get_prob(c, vp56_coeff_parse_table[idx][i]) << i;
+ idx = vp56_rac_get_tree(c, ff_vp56_pc_tree, model1);
+ coeff = ff_vp56_coeff_bias[idx+5];
+ for (i=ff_vp56_coeff_bit_length[idx]; i>=0; i--)
+ coeff += vp56_rac_get_prob(c, ff_vp56_coeff_parse_table[idx][i]) << i;
} else {
if (vp56_rac_get_prob(c, model2[4]))
coeff = 3 + vp56_rac_get_prob(c, model1[5]);
run += vp56_rac_get_prob(c, model3[i+8]) << i;
}
}
-
- cg = vp6_coeff_groups[coeff_idx+=run];
+ coeff_idx += run;
+ if (coeff_idx >= 64)
+ break;
+ cg = vp6_coeff_groups[coeff_idx];
model1 = model2 = model->coeff_ract[pt][ct][cg];
}
- s->left_block[vp56_b6to4[b]].not_null_dc =
+ s->left_block[ff_vp56_b6to4[b]].not_null_dc =
s->above_blocks[s->above_block_idx[b]].not_null_dc = !!s->block_coeff[b][0];
}
}
{
VP56Context *s = avctx->priv_data;
- ff_vp56_init(avctx, avctx->codec->id == CODEC_ID_VP6,
- avctx->codec->id == CODEC_ID_VP6A);
+ ff_vp56_init(avctx, avctx->codec->id == AV_CODEC_ID_VP6,
+ avctx->codec->id == AV_CODEC_ID_VP6A);
s->vp56_coord_div = vp6_coord_div;
s->parse_vector_adjustment = vp6_parse_vector_adjustment;
s->filter = vp6_filter;
ff_vp56_free(avctx);
for (pt=0; pt<2; pt++) {
- free_vlc(&s->dccv_vlc[pt]);
- free_vlc(&s->runv_vlc[pt]);
+ ff_free_vlc(&s->dccv_vlc[pt]);
+ ff_free_vlc(&s->runv_vlc[pt]);
for (ct=0; ct<3; ct++)
for (cg=0; cg<6; cg++)
- free_vlc(&s->ract_vlc[pt][ct][cg]);
+ ff_free_vlc(&s->ract_vlc[pt][ct][cg]);
}
return 0;
}
AVCodec ff_vp6_decoder = {
.name = "vp6",
.type = AVMEDIA_TYPE_VIDEO,
- .id = CODEC_ID_VP6,
+ .id = AV_CODEC_ID_VP6,
.priv_data_size = sizeof(VP56Context),
.init = vp6_decode_init,
.close = vp6_decode_free,
.decode = ff_vp56_decode_frame,
.capabilities = CODEC_CAP_DR1,
- .long_name = NULL_IF_CONFIG_SMALL("On2 VP6"),
+ .long_name = NULL_IF_CONFIG_SMALL("On2 VP6"),
};
/* flash version, not flipped upside-down */
AVCodec ff_vp6f_decoder = {
.name = "vp6f",
.type = AVMEDIA_TYPE_VIDEO,
- .id = CODEC_ID_VP6F,
+ .id = AV_CODEC_ID_VP6F,
.priv_data_size = sizeof(VP56Context),
.init = vp6_decode_init,
.close = vp6_decode_free,
.decode = ff_vp56_decode_frame,
.capabilities = CODEC_CAP_DR1,
- .long_name = NULL_IF_CONFIG_SMALL("On2 VP6 (Flash version)"),
+ .long_name = NULL_IF_CONFIG_SMALL("On2 VP6 (Flash version)"),
};
/* flash version, not flipped upside-down, with alpha channel */
AVCodec ff_vp6a_decoder = {
.name = "vp6a",
.type = AVMEDIA_TYPE_VIDEO,
- .id = CODEC_ID_VP6A,
+ .id = AV_CODEC_ID_VP6A,
.priv_data_size = sizeof(VP56Context),
.init = vp6_decode_init,
.close = vp6_decode_free,
.decode = ff_vp56_decode_frame,
.capabilities = CODEC_CAP_DR1,
- .long_name = NULL_IF_CONFIG_SMALL("On2 VP6 (Flash version, with alpha channel)"),
+ .long_name = NULL_IF_CONFIG_SMALL("On2 VP6 (Flash version, with alpha channel)"),
};
projects / ffmpeg / blobdiff