-/**
- * @file vp56.c
- * VP5 and VP6 compatible video decoder (common features)
- *
+/*
* Copyright (C) 2006 Aurelien Jacobs <aurel@gnuage.org>
*
- * This file is part of FFmpeg.
+ * This file is part of Libav.
*
- * FFmpeg is free software; you can redistribute it and/or
+ * Libav 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,
+ * Libav 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
+ * License along with Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
+/**
+ * @file
+ * VP5 and VP6 compatible video decoder (common features)
+ */
+
#include "avcodec.h"
#include "bytestream.h"
#include "vp56data.h"
-void vp56_init_dequant(vp56_context_t *s, int quantizer)
+void ff_vp56_init_dequant(VP56Context *s, int quantizer)
{
s->quantizer = quantizer;
s->dequant_dc = vp56_dc_dequant[quantizer] << 2;
s->dequant_ac = vp56_ac_dequant[quantizer] << 2;
+ memset(s->qscale_table, quantizer, s->mb_width);
}
-static int vp56_get_vectors_predictors(vp56_context_t *s, int row, int col,
- vp56_frame_t ref_frame)
+static int vp56_get_vectors_predictors(VP56Context *s, int row, int col,
+ VP56Frame ref_frame)
{
int nb_pred = 0;
- vp56_mv_t vect[2] = {{0,0}, {0,0}};
+ VP56mv vect[2] = {{0,0}, {0,0}};
int pos, offset;
- vp56_mv_t mvp;
+ VP56mv mvp;
for (pos=0; pos<12; pos++) {
mvp.x = col + vp56_candidate_predictor_pos[pos][0];
return nb_pred+1;
}
-static void vp56_parse_mb_type_models(vp56_context_t *s)
+static void vp56_parse_mb_type_models(VP56Context *s)
{
- vp56_range_coder_t *c = &s->c;
- vp56_model_t *model = s->modelp;
+ VP56RangeCoder *c = &s->c;
+ VP56Model *model = s->modelp;
int i, ctx, type;
for (ctx=0; ctx<3; ctx++) {
}
}
-static vp56_mb_t vp56_parse_mb_type(vp56_context_t *s,
- vp56_mb_t prev_type, int ctx)
+static VP56mb vp56_parse_mb_type(VP56Context *s,
+ VP56mb prev_type, int ctx)
{
uint8_t *mb_type_model = s->modelp->mb_type[ctx][prev_type];
- vp56_range_coder_t *c = &s->c;
+ VP56RangeCoder *c = &s->c;
if (vp56_rac_get_prob(c, mb_type_model[0]))
return prev_type;
return vp56_rac_get_tree(c, vp56_pmbt_tree, mb_type_model);
}
-static void vp56_decode_4mv(vp56_context_t *s, int row, int col)
+static void vp56_decode_4mv(VP56Context *s, int row, int col)
{
- vp56_mv_t mv = {0,0};
+ VP56mv mv = {0,0};
int type[4];
int b;
for (b=0; b<4; b++) {
switch (type[b]) {
case VP56_MB_INTER_NOVEC_PF:
- s->mv[b] = (vp56_mv_t) {0,0};
+ s->mv[b] = (VP56mv) {0,0};
break;
case VP56_MB_INTER_DELTA_PF:
s->parse_vector_adjustment(s, &s->mv[b]);
s->mv[4].x = s->mv[5].x = RSHIFT(mv.x,2);
s->mv[4].y = s->mv[5].y = RSHIFT(mv.y,2);
} else {
- s->mv[4] = s->mv[5] = (vp56_mv_t) {mv.x/4, mv.y/4};
+ s->mv[4] = s->mv[5] = (VP56mv) {mv.x/4, mv.y/4};
}
}
-static vp56_mb_t vp56_decode_mv(vp56_context_t *s, int row, int col)
+static VP56mb vp56_decode_mv(VP56Context *s, int row, int col)
{
- vp56_mv_t *mv, vect = {0,0};
+ VP56mv *mv, vect = {0,0};
int ctx, b;
ctx = vp56_get_vectors_predictors(s, row, col, VP56_FRAME_PREVIOUS);
return s->mb_type;
}
-static void vp56_add_predictors_dc(vp56_context_t *s, vp56_frame_t ref_frame)
+static void vp56_add_predictors_dc(VP56Context *s, VP56Frame ref_frame)
{
int idx = s->scantable.permutated[0];
int b;
for (b=0; b<6; b++) {
- vp56_ref_dc_t *ab = &s->above_blocks[s->above_block_idx[b]];
- vp56_ref_dc_t *lb = &s->left_block[vp56_b6to4[b]];
+ VP56RefDc *ab = &s->above_blocks[s->above_block_idx[b]];
+ VP56RefDc *lb = &s->left_block[ff_vp56_b6to4[b]];
int count = 0;
int dc = 0;
int i;
count++;
}
if (count == 0)
- dc = s->prev_dc[vp56_b2p[b]][ref_frame];
+ dc = s->prev_dc[ff_vp56_b2p[b]][ref_frame];
else if (count == 2)
dc /= 2;
s->block_coeff[b][idx] += dc;
- s->prev_dc[vp56_b2p[b]][ref_frame] = s->block_coeff[b][idx];
+ s->prev_dc[ff_vp56_b2p[b]][ref_frame] = s->block_coeff[b][idx];
ab->dc_coeff = s->block_coeff[b][idx];
ab->ref_frame = ref_frame;
lb->dc_coeff = s->block_coeff[b][idx];
}
}
-static void vp56_edge_filter(vp56_context_t *s, uint8_t *yuv,
- int pix_inc, int line_inc, int t)
-{
- int pix2_inc = 2 * pix_inc;
- int i, v;
-
- for (i=0; i<12; i++) {
- v = (yuv[-pix2_inc] + 3*(yuv[0]-yuv[-pix_inc]) - yuv[pix_inc] + 4) >>3;
- v = s->adjust(v, t);
- yuv[-pix_inc] = av_clip_uint8(yuv[-pix_inc] + v);
- yuv[0] = av_clip_uint8(yuv[0] - v);
- yuv += line_inc;
- }
-}
-
-static void vp56_deblock_filter(vp56_context_t *s, uint8_t *yuv,
+static void vp56_deblock_filter(VP56Context *s, uint8_t *yuv,
int stride, int dx, int dy)
{
int t = vp56_filter_threshold[s->quantizer];
- if (dx) vp56_edge_filter(s, yuv + 10-dx , 1, stride, t);
- if (dy) vp56_edge_filter(s, yuv + stride*(10-dy), stride, 1, t);
+ if (dx) s->vp56dsp.edge_filter_hor(yuv + 10-dx , stride, t);
+ if (dy) s->vp56dsp.edge_filter_ver(yuv + stride*(10-dy), stride, t);
}
-static void vp56_mc(vp56_context_t *s, int b, int plane, uint8_t *src,
+static void vp56_mc(VP56Context *s, int b, int plane, uint8_t *src,
int stride, int x, int y)
{
uint8_t *dst=s->framep[VP56_FRAME_CURRENT]->data[plane]+s->block_offset[b];
if (x<0 || x+12>=s->plane_width[plane] ||
y<0 || y+12>=s->plane_height[plane]) {
- ff_emulated_edge_mc(s->edge_emu_buffer,
+ s->dsp.emulated_edge_mc(s->edge_emu_buffer,
src + s->block_offset[b] + (dy-2)*stride + (dx-2),
stride, 12, 12, x, y,
s->plane_width[plane],
}
}
-static void vp56_decode_mb(vp56_context_t *s, int row, int col, int is_alpha)
+static void vp56_decode_mb(VP56Context *s, int row, int col, int is_alpha)
{
AVFrame *frame_current, *frame_ref;
- vp56_mb_t mb_type;
- vp56_frame_t ref_frame;
+ VP56mb mb_type;
+ VP56Frame ref_frame;
int b, ab, b_max, plane, off;
if (s->framep[VP56_FRAME_CURRENT]->key_frame)
mb_type = vp56_decode_mv(s, row, col);
ref_frame = vp56_reference_frame[mb_type];
- memset(s->block_coeff, 0, sizeof(s->block_coeff));
+ s->dsp.clear_blocks(*s->block_coeff);
s->parse_coeff(s);
frame_current = s->framep[VP56_FRAME_CURRENT];
frame_ref = s->framep[ref_frame];
+ if (mb_type != VP56_MB_INTRA && !frame_ref->data[0])
+ return;
ab = 6*is_alpha;
b_max = 6 - 2*is_alpha;
switch (mb_type) {
case VP56_MB_INTRA:
for (b=0; b<b_max; b++) {
- plane = vp56_b2p[b+ab];
+ plane = ff_vp56_b2p[b+ab];
s->dsp.idct_put(frame_current->data[plane] + s->block_offset[b],
s->stride[plane], s->block_coeff[b]);
}
case VP56_MB_INTER_NOVEC_PF:
case VP56_MB_INTER_NOVEC_GF:
for (b=0; b<b_max; b++) {
- plane = vp56_b2p[b+ab];
+ plane = ff_vp56_b2p[b+ab];
off = s->block_offset[b];
s->dsp.put_pixels_tab[1][0](frame_current->data[plane] + off,
frame_ref->data[plane] + off,
for (b=0; b<b_max; b++) {
int x_off = b==1 || b==3 ? 8 : 0;
int y_off = b==2 || b==3 ? 8 : 0;
- plane = vp56_b2p[b+ab];
+ plane = ff_vp56_b2p[b+ab];
vp56_mc(s, b, plane, frame_ref->data[plane], s->stride[plane],
16*col+x_off, 16*row+y_off);
s->dsp.idct_add(frame_current->data[plane] + s->block_offset[b],
static int vp56_size_changed(AVCodecContext *avctx)
{
- vp56_context_t *s = avctx->priv_data;
+ VP56Context *s = avctx->priv_data;
int stride = s->framep[VP56_FRAME_CURRENT]->linesize[0];
int i;
s->mb_height = (avctx->coded_height+15) / 16;
if (s->mb_width > 1000 || s->mb_height > 1000) {
+ avcodec_set_dimensions(avctx, 0, 0);
av_log(avctx, AV_LOG_ERROR, "picture too big\n");
return -1;
}
+ s->qscale_table = av_realloc(s->qscale_table, s->mb_width);
s->above_blocks = av_realloc(s->above_blocks,
(4*s->mb_width+6) * sizeof(*s->above_blocks));
s->macroblocks = av_realloc(s->macroblocks,
return 0;
}
-int vp56_decode_frame(AVCodecContext *avctx, void *data, int *data_size,
- const uint8_t *buf, int buf_size)
+int ff_vp56_decode_frame(AVCodecContext *avctx, void *data, int *data_size,
+ AVPacket *avpkt)
{
- vp56_context_t *s = avctx->priv_data;
+ const uint8_t *buf = avpkt->data;
+ VP56Context *s = avctx->priv_data;
AVFrame *const p = s->framep[VP56_FRAME_CURRENT];
- int remaining_buf_size = buf_size;
- int is_alpha, alpha_offset;
+ int remaining_buf_size = avpkt->size;
+ int is_alpha, av_uninit(alpha_offset);
if (s->has_alpha) {
+ if (remaining_buf_size < 3)
+ return -1;
alpha_offset = bytestream_get_be24(&buf);
remaining_buf_size -= 3;
+ if (remaining_buf_size < alpha_offset)
+ return -1;
}
for (is_alpha=0; is_alpha < 1+s->has_alpha; is_alpha++) {
if (!res)
return -1;
+ if (res == 2) {
+ int i;
+ for (i = 0; i < 4; i++) {
+ if (s->frames[i].data[0])
+ avctx->release_buffer(avctx, &s->frames[i]);
+ }
+ if (is_alpha) {
+ avcodec_set_dimensions(avctx, 0, 0);
+ return -1;
+ }
+ }
+
if (!is_alpha) {
p->reference = 1;
if (avctx->get_buffer(avctx, p) < 0) {
}
if (p->key_frame) {
- p->pict_type = FF_I_TYPE;
+ p->pict_type = AV_PICTURE_TYPE_I;
s->default_models_init(s);
for (block=0; block<s->mb_height*s->mb_width; block++)
s->macroblocks[block].type = VP56_MB_INTRA;
} else {
- p->pict_type = FF_P_TYPE;
+ p->pict_type = AV_PICTURE_TYPE_P;
vp56_parse_mb_type_models(s);
s->parse_vector_models(s);
s->mb_type = VP56_MB_INTER_NOVEC_PF;
}
- s->parse_coeff_models(s);
+ if (s->parse_coeff_models(s))
+ goto next;
memset(s->prev_dc, 0, sizeof(s->prev_dc));
s->prev_dc[1][VP56_FRAME_CURRENT] = 128;
}
}
+ next:
if (p->key_frame || golden_frame) {
if (s->framep[VP56_FRAME_GOLDEN]->data[0] &&
s->framep[VP56_FRAME_GOLDEN] != s->framep[VP56_FRAME_GOLDEN2])
FFSWAP(AVFrame *, s->framep[VP56_FRAME_CURRENT],
s->framep[VP56_FRAME_PREVIOUS]);
+ p->qstride = 0;
+ p->qscale_table = s->qscale_table;
+ p->qscale_type = FF_QSCALE_TYPE_VP56;
*(AVFrame*)data = *p;
*data_size = sizeof(AVFrame);
- return buf_size;
+ return avpkt->size;
}
-av_cold void vp56_init(AVCodecContext *avctx, int flip, int has_alpha)
+av_cold void ff_vp56_init(AVCodecContext *avctx, int flip, int has_alpha)
{
- vp56_context_t *s = avctx->priv_data;
+ VP56Context *s = avctx->priv_data;
int i;
s->avctx = avctx;
if (avctx->idct_algo == FF_IDCT_AUTO)
avctx->idct_algo = FF_IDCT_VP3;
- dsputil_init(&s->dsp, avctx);
+ ff_dsputil_init(&s->dsp, avctx);
+ ff_vp56dsp_init(&s->vp56dsp, avctx->codec->id);
ff_init_scantable(s->dsp.idct_permutation, &s->scantable,ff_zigzag_direct);
- avcodec_set_dimensions(avctx, 0, 0);
-
for (i=0; i<4; i++)
s->framep[i] = &s->frames[i];
s->framep[VP56_FRAME_UNUSED] = s->framep[VP56_FRAME_GOLDEN];
}
}
-av_cold int vp56_free(AVCodecContext *avctx)
+av_cold int ff_vp56_free(AVCodecContext *avctx)
{
- vp56_context_t *s = avctx->priv_data;
+ VP56Context *s = avctx->priv_data;
- av_free(s->above_blocks);
- av_free(s->macroblocks);
- av_free(s->edge_emu_buffer_alloc);
+ av_freep(&s->qscale_table);
+ av_freep(&s->above_blocks);
+ av_freep(&s->macroblocks);
+ av_freep(&s->edge_emu_buffer_alloc);
if (s->framep[VP56_FRAME_GOLDEN]->data[0])
avctx->release_buffer(avctx, s->framep[VP56_FRAME_GOLDEN]);
if (s->framep[VP56_FRAME_GOLDEN2]->data[0])
projects / ffmpeg / blobdiff