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Diffstat (limited to 'src/libffmpeg/libavcodec/vp5.c')
-rw-r--r--src/libffmpeg/libavcodec/vp5.c290
1 files changed, 0 insertions, 290 deletions
diff --git a/src/libffmpeg/libavcodec/vp5.c b/src/libffmpeg/libavcodec/vp5.c
deleted file mode 100644
index ac953c7aa..000000000
--- a/src/libffmpeg/libavcodec/vp5.c
+++ /dev/null
@@ -1,290 +0,0 @@
-/**
- * @file vp5.c
- * VP5 compatible video decoder
- *
- * Copyright (C) 2006 Aurelien Jacobs <aurel@gnuage.org>
- *
- * 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 2.1 of the License, or (at your option) any later version.
- *
- * 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 FFmpeg; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
- */
-
-#include <stdlib.h>
-#include <string.h>
-
-#include "avcodec.h"
-#include "dsputil.h"
-#include "bitstream.h"
-#include "mpegvideo.h"
-
-#include "vp56.h"
-#include "vp56data.h"
-#include "vp5data.h"
-
-
-static int vp5_parse_header(vp56_context_t *s, uint8_t *buf, int buf_size,
- int *golden_frame)
-{
- vp56_range_coder_t *c = &s->c;
- int rows, cols;
-
- vp56_init_range_decoder(&s->c, buf, buf_size);
- s->frames[VP56_FRAME_CURRENT].key_frame = !vp56_rac_get(c);
- vp56_rac_get(c);
- vp56_init_dequant(s, vp56_rac_gets(c, 6));
- if (s->frames[VP56_FRAME_CURRENT].key_frame)
- {
- vp56_rac_gets(c, 8);
- if(vp56_rac_gets(c, 5) > 5)
- return 0;
- vp56_rac_gets(c, 2);
- if (vp56_rac_get(c)) {
- av_log(s->avctx, AV_LOG_ERROR, "interlacing not supported\n");
- return 0;
- }
- rows = vp56_rac_gets(c, 8); /* number of stored macroblock rows */
- cols = vp56_rac_gets(c, 8); /* number of stored macroblock cols */
- vp56_rac_gets(c, 8); /* number of displayed macroblock rows */
- vp56_rac_gets(c, 8); /* number of displayed macroblock cols */
- vp56_rac_gets(c, 2);
- if (16*cols != s->avctx->coded_width ||
- 16*rows != s->avctx->coded_height) {
- avcodec_set_dimensions(s->avctx, 16*cols, 16*rows);
- return 2;
- }
- }
- return 1;
-}
-
-/* Gives very similar result than the vp6 version except in a few cases */
-static int vp5_adjust(int v, int t)
-{
- int s2, s1 = v >> 31;
- v ^= s1;
- v -= s1;
- v *= v < 2*t;
- v -= t;
- s2 = v >> 31;
- v ^= s2;
- v -= s2;
- v = t - v;
- v += s1;
- v ^= s1;
- return v;
-}
-
-static void vp5_parse_vector_adjustment(vp56_context_t *s, vp56_mv_t *vect)
-{
- vp56_range_coder_t *c = &s->c;
- int comp, di;
-
- for (comp=0; comp<2; comp++) {
- int delta = 0;
- if (vp56_rac_get_prob(c, s->vector_model_dct[comp])) {
- int sign = vp56_rac_get_prob(c, s->vector_model_sig[comp]);
- di = vp56_rac_get_prob(c, s->vector_model_pdi[comp][0]);
- di |= vp56_rac_get_prob(c, s->vector_model_pdi[comp][1]) << 1;
- delta = vp56_rac_get_tree(c, vp56_pva_tree,
- s->vector_model_pdv[comp]);
- delta = di | (delta << 2);
- delta = (delta ^ -sign) + sign;
- }
- if (!comp)
- vect->x = delta;
- else
- vect->y = delta;
- }
-}
-
-static void vp5_parse_vector_models(vp56_context_t *s)
-{
- vp56_range_coder_t *c = &s->c;
- int comp, node;
-
- for (comp=0; comp<2; comp++) {
- if (vp56_rac_get_prob(c, vp5_vmc_pct[comp][0]))
- s->vector_model_dct[comp] = vp56_rac_gets_nn(c, 7);
- if (vp56_rac_get_prob(c, vp5_vmc_pct[comp][1]))
- s->vector_model_sig[comp] = vp56_rac_gets_nn(c, 7);
- if (vp56_rac_get_prob(c, vp5_vmc_pct[comp][2]))
- s->vector_model_pdi[comp][0] = vp56_rac_gets_nn(c, 7);
- if (vp56_rac_get_prob(c, vp5_vmc_pct[comp][3]))
- s->vector_model_pdi[comp][1] = vp56_rac_gets_nn(c, 7);
- }
-
- for (comp=0; comp<2; comp++)
- for (node=0; node<7; node++)
- if (vp56_rac_get_prob(c, vp5_vmc_pct[comp][4 + node]))
- s->vector_model_pdv[comp][node] = vp56_rac_gets_nn(c, 7);
-}
-
-static void vp5_parse_coeff_models(vp56_context_t *s)
-{
- vp56_range_coder_t *c = &s->c;
- uint8_t def_prob[11];
- int node, cg, ctx;
- int ct; /* code type */
- int pt; /* plane type (0 for Y, 1 for U or V) */
-
- memset(def_prob, 0x80, sizeof(def_prob));
-
- for (pt=0; pt<2; pt++)
- for (node=0; node<11; node++)
- if (vp56_rac_get_prob(c, vp5_dccv_pct[pt][node])) {
- def_prob[node] = vp56_rac_gets_nn(c, 7);
- s->coeff_model_dccv[pt][node] = def_prob[node];
- } else if (s->frames[VP56_FRAME_CURRENT].key_frame) {
- s->coeff_model_dccv[pt][node] = def_prob[node];
- }
-
- for (ct=0; ct<3; ct++)
- for (pt=0; pt<2; pt++)
- for (cg=0; cg<6; cg++)
- for (node=0; node<11; node++)
- if (vp56_rac_get_prob(c, vp5_ract_pct[ct][pt][cg][node])) {
- def_prob[node] = vp56_rac_gets_nn(c, 7);
- s->coeff_model_ract[pt][ct][cg][node] = def_prob[node];
- } else if (s->frames[VP56_FRAME_CURRENT].key_frame) {
- s->coeff_model_ract[pt][ct][cg][node] = def_prob[node];
- }
-
- /* coeff_model_dcct is a linear combination of coeff_model_dccv */
- for (pt=0; pt<2; pt++)
- for (ctx=0; ctx<36; ctx++)
- for (node=0; node<5; node++)
- s->coeff_model_dcct[pt][ctx][node] = clip(((s->coeff_model_dccv[pt][node] * vp5_dccv_lc[node][ctx][0] + 128) >> 8) + vp5_dccv_lc[node][ctx][1], 1, 254);
-
- /* coeff_model_acct is a linear combination of coeff_model_ract */
- for (ct=0; ct<3; ct++)
- for (pt=0; pt<2; pt++)
- for (cg=0; cg<3; cg++)
- for (ctx=0; ctx<6; ctx++)
- for (node=0; node<5; node++)
- s->coeff_model_acct[pt][ct][cg][ctx][node] = clip(((s->coeff_model_ract[pt][ct][cg][node] * vp5_ract_lc[ct][cg][node][ctx][0] + 128) >> 8) + vp5_ract_lc[ct][cg][node][ctx][1], 1, 254);
-}
-
-static void vp5_parse_coeff(vp56_context_t *s)
-{
- vp56_range_coder_t *c = &s->c;
- uint8_t *permute = s->scantable.permutated;
- uint8_t *model, *model2;
- int coeff, sign, coeff_idx;
- int b, i, cg, idx, ctx, ctx_last;
- int pt = 0; /* plane type (0 for Y, 1 for U or V) */
-
- for (b=0; b<6; b++) {
- int ct = 1; /* code type */
-
- if (b > 3) pt = 1;
-
- ctx = 6*s->coeff_ctx[vp56_b6to4[b]][0]
- + s->above_blocks[s->above_block_idx[b]].not_null_dc;
- model = s->coeff_model_dccv[pt];
- model2 = s->coeff_model_dcct[pt][ctx];
-
- for (coeff_idx=0; coeff_idx<64; ) {
- if (vp56_rac_get_prob(c, model2[0])) {
- if (vp56_rac_get_prob(c, model2[2])) {
- if (vp56_rac_get_prob(c, model2[3])) {
- s->coeff_ctx[vp56_b6to4[b]][coeff_idx] = 4;
- idx = vp56_rac_get_tree(c, vp56_pc_tree, model);
- sign = vp56_rac_get(c);
- coeff = vp56_coeff_bias[idx];
- for (i=vp56_coeff_bit_length[idx]; i>=0; i--)
- coeff += vp56_rac_get_prob(c, vp56_coeff_parse_table[idx][i]) << i;
- } else {
- if (vp56_rac_get_prob(c, model2[4])) {
- coeff = 3 + vp56_rac_get_prob(c, model[5]);
- s->coeff_ctx[vp56_b6to4[b]][coeff_idx] = 3;
- } else {
- coeff = 2;
- s->coeff_ctx[vp56_b6to4[b]][coeff_idx] = 2;
- }
- sign = vp56_rac_get(c);
- }
- ct = 2;
- } else {
- ct = 1;
- s->coeff_ctx[vp56_b6to4[b]][coeff_idx] = 1;
- sign = vp56_rac_get(c);
- coeff = 1;
- }
- coeff = (coeff ^ -sign) + sign;
- if (coeff_idx)
- coeff *= s->dequant_ac;
- s->block_coeff[b][permute[coeff_idx]] = coeff;
- } else {
- if (ct && !vp56_rac_get_prob(c, model2[1]))
- break;
- ct = 0;
- s->coeff_ctx[vp56_b6to4[b]][coeff_idx] = 0;
- }
-
- cg = vp5_coeff_groups[++coeff_idx];
- ctx = s->coeff_ctx[vp56_b6to4[b]][coeff_idx];
- model = s->coeff_model_ract[pt][ct][cg];
- model2 = cg > 2 ? model : s->coeff_model_acct[pt][ct][cg][ctx];
- }
-
- ctx_last = FFMIN(s->coeff_ctx_last[vp56_b6to4[b]], 24);
- s->coeff_ctx_last[vp56_b6to4[b]] = coeff_idx;
- if (coeff_idx < ctx_last)
- for (i=coeff_idx; i<=ctx_last; i++)
- s->coeff_ctx[vp56_b6to4[b]][i] = 5;
- s->above_blocks[s->above_block_idx[b]].not_null_dc = s->coeff_ctx[vp56_b6to4[b]][0];
- }
-}
-
-static void vp5_default_models_init(vp56_context_t *s)
-{
- int i;
-
- for (i=0; i<2; i++) {
- s->vector_model_sig[i] = 0x80;
- s->vector_model_dct[i] = 0x80;
- s->vector_model_pdi[i][0] = 0x55;
- s->vector_model_pdi[i][1] = 0x80;
- }
- memcpy(s->mb_types_stats, vp56_def_mb_types_stats, sizeof(s->mb_types_stats));
- memset(s->vector_model_pdv, 0x80, sizeof(s->vector_model_pdv));
-}
-
-static int vp5_decode_init(AVCodecContext *avctx)
-{
- vp56_context_t *s = avctx->priv_data;
-
- vp56_init(s, avctx, 1);
- s->vp56_coord_div = vp5_coord_div;
- s->parse_vector_adjustment = vp5_parse_vector_adjustment;
- s->adjust = vp5_adjust;
- s->parse_coeff = vp5_parse_coeff;
- s->default_models_init = vp5_default_models_init;
- s->parse_vector_models = vp5_parse_vector_models;
- s->parse_coeff_models = vp5_parse_coeff_models;
- s->parse_header = vp5_parse_header;
-
- return 0;
-}
-
-AVCodec vp5_decoder = {
- "vp5",
- CODEC_TYPE_VIDEO,
- CODEC_ID_VP5,
- sizeof(vp56_context_t),
- vp5_decode_init,
- NULL,
- vp56_free,
- vp56_decode_frame,
-};
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