-/**
- * @file libavcodec/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(VP56Context *s, int quantizer)
+void ff_vp56_init_dequant(VP56Context *s, int quantizer)
{
s->quantizer = quantizer;
s->dequant_dc = vp56_dc_dequant[quantizer] << 2;
for (b=0; b<6; b++) {
VP56RefDc *ab = &s->above_blocks[s->above_block_idx[b]];
- VP56RefDc *lb = &s->left_block[vp56_b6to4[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(VP56Context *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(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(VP56Context *s, int b, int plane, uint8_t *src,
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],
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],
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;
}
return 0;
}
-int vp56_decode_frame(AVCodecContext *avctx, void *data, int *data_size,
- AVPacket *avpkt)
+int ff_vp56_decode_frame(AVCodecContext *avctx, void *data, int *data_size,
+ AVPacket *avpkt)
{
const uint8_t *buf = avpkt->data;
VP56Context *s = avctx->priv_data;
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])
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)
{
VP56Context *s = avctx->priv_data;
int i;
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);
for (i=0; i<4; i++)
}
}
-av_cold int vp56_free(AVCodecContext *avctx)
+av_cold int ff_vp56_free(AVCodecContext *avctx)
{
VP56Context *s = avctx->priv_data;
projects / ffmpeg / blobdiff