-/**
- * @file
- * 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;
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;
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;
}
}
-av_cold int vp56_free(AVCodecContext *avctx)
+av_cold int ff_vp56_free(AVCodecContext *avctx)
{
VP56Context *s = avctx->priv_data;