-/**
- * @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
- * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ * License along with Libav; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
-#include "avcodec.h"
+/**
+ * @file
+ * VP5 and VP6 compatible video decoder (common features)
+ */
+#include "avcodec.h"
+#include "bytestream.h"
+#include "internal.h"
+#include "h264chroma.h"
#include "vp56.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;
+ s->dequant_dc = ff_vp56_dc_dequant[quantizer] << 2;
+ s->dequant_ac = ff_vp56_ac_dequant[quantizer] << 2;
}
-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];
- mvp.y = row + vp56_candidate_predictor_pos[pos][1];
+ mvp.x = col + ff_vp56_candidate_predictor_pos[pos][0];
+ mvp.y = row + ff_vp56_candidate_predictor_pos[pos][1];
if (mvp.x < 0 || mvp.x >= s->mb_width ||
mvp.y < 0 || mvp.y >= s->mb_height)
continue;
offset = mvp.x + s->mb_width*mvp.y;
- if (vp56_reference_frame[s->macroblocks[offset].type] != ref_frame)
+ if (ff_vp56_reference_frame[s->macroblocks[offset].type] != ref_frame)
continue;
if ((s->macroblocks[offset].mv.x == vect[0].x &&
s->macroblocks[offset].mv.y == vect[0].y) ||
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;
+ VP56RangeCoder *c = &s->c;
+ VP56Model *model = s->modelp;
int i, ctx, type;
for (ctx=0; ctx<3; ctx++) {
if (vp56_rac_get_prob(c, 174)) {
int idx = vp56_rac_gets(c, 4);
- memcpy(s->mb_types_stats[ctx],vp56_pre_def_mb_type_stats[idx][ctx],
- sizeof(s->mb_types_stats[ctx]));
+ memcpy(model->mb_types_stats[ctx],
+ ff_vp56_pre_def_mb_type_stats[idx][ctx],
+ sizeof(model->mb_types_stats[ctx]));
}
if (vp56_rac_get_prob(c, 254)) {
for (type=0; type<10; type++) {
if (vp56_rac_get_prob(c, 205)) {
int delta, sign = vp56_rac_get(c);
- delta = vp56_rac_get_tree(c, vp56_pmbtm_tree,
- vp56_mb_type_model_model);
+ delta = vp56_rac_get_tree(c, ff_vp56_pmbtm_tree,
+ ff_vp56_mb_type_model_model);
if (!delta)
delta = 4 * vp56_rac_gets(c, 7);
- s->mb_types_stats[ctx][type][i] += (delta ^ -sign) + sign;
+ model->mb_types_stats[ctx][type][i] += (delta ^ -sign) + sign;
}
}
}
int p[10];
for (type=0; type<10; type++)
- p[type] = 100 * s->mb_types_stats[ctx][type][1];
+ p[type] = 100 * model->mb_types_stats[ctx][type][1];
for (type=0; type<10; type++) {
int p02, p34, p0234, p17, p56, p89, p5689, p156789;
/* conservative MB type probability */
- s->mb_type_model[ctx][type][0] = 255 - (255 * s->mb_types_stats[ctx][type][0]) / (1 + s->mb_types_stats[ctx][type][0] + s->mb_types_stats[ctx][type][1]);
+ model->mb_type[ctx][type][0] = 255 - (255 * model->mb_types_stats[ctx][type][0]) / (1 + model->mb_types_stats[ctx][type][0] + model->mb_types_stats[ctx][type][1]);
p[type] = 0; /* same MB type => weight is null */
p5689 = p56 + p89;
p156789 = p17 + p5689;
- s->mb_type_model[ctx][type][1] = 1 + 255 * p0234/(1+p0234+p156789);
- s->mb_type_model[ctx][type][2] = 1 + 255 * p02 / (1+p0234);
- s->mb_type_model[ctx][type][3] = 1 + 255 * p17 / (1+p156789);
- s->mb_type_model[ctx][type][4] = 1 + 255 * p[0] / (1+p02);
- s->mb_type_model[ctx][type][5] = 1 + 255 * p[3] / (1+p34);
- s->mb_type_model[ctx][type][6] = 1 + 255 * p[1] / (1+p17);
- s->mb_type_model[ctx][type][7] = 1 + 255 * p56 / (1+p5689);
- s->mb_type_model[ctx][type][8] = 1 + 255 * p[5] / (1+p56);
- s->mb_type_model[ctx][type][9] = 1 + 255 * p[8] / (1+p89);
+ model->mb_type[ctx][type][1] = 1 + 255 * p0234/(1+p0234+p156789);
+ model->mb_type[ctx][type][2] = 1 + 255 * p02 / (1+p0234);
+ model->mb_type[ctx][type][3] = 1 + 255 * p17 / (1+p156789);
+ model->mb_type[ctx][type][4] = 1 + 255 * p[0] / (1+p02);
+ model->mb_type[ctx][type][5] = 1 + 255 * p[3] / (1+p34);
+ model->mb_type[ctx][type][6] = 1 + 255 * p[1] / (1+p17);
+ model->mb_type[ctx][type][7] = 1 + 255 * p56 / (1+p5689);
+ model->mb_type[ctx][type][8] = 1 + 255 * p[5] / (1+p56);
+ model->mb_type[ctx][type][9] = 1 + 255 * p[8] / (1+p89);
/* restore initial value */
- p[type] = 100 * s->mb_types_stats[ctx][type][1];
+ p[type] = 100 * model->mb_types_stats[ctx][type][1];
}
}
}
-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->mb_type_model[ctx][prev_type];
- vp56_range_coder_t *c = &s->c;
+ uint8_t *mb_type_model = s->modelp->mb_type[ctx][prev_type];
+ VP56RangeCoder *c = &s->c;
if (vp56_rac_get_prob(c, mb_type_model[0]))
return prev_type;
else
- return vp56_rac_get_tree(c, vp56_pmbt_tree, mb_type_model);
+ return vp56_rac_get_tree(c, ff_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->macroblocks[row * s->mb_width + col].mv = s->mv[3];
/* chroma vectors are average luma vectors */
- if (s->avctx->codec->id == CODEC_ID_VP5) {
+ if (s->avctx->codec->id == AV_CODEC_ID_VP5) {
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 i;
+ int idx = s->idct_scantable[0];
+ int b;
- for (i=0; i<6; i++) {
- vp56_ref_dc_t *ab = &s->above_blocks[s->above_block_idx[i]];
- vp56_ref_dc_t *lb = &s->left_block[vp56_b6to4[i]];
+ for (b=0; b<6; 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;
if (ref_frame == lb->ref_frame) {
dc += lb->dc_coeff;
dc += ab->dc_coeff;
count++;
}
- if (s->avctx->codec->id == CODEC_ID_VP5) {
- if (count < 2 && ref_frame == ab[-1].ref_frame) {
- dc += ab[-1].dc_coeff;
- count++;
- }
- if (count < 2 && ref_frame == ab[1].ref_frame) {
- dc += ab[1].dc_coeff;
- count++;
- }
- }
+ if (s->avctx->codec->id == AV_CODEC_ID_VP5)
+ for (i=0; i<2; i++)
+ if (count < 2 && ref_frame == ab[-1+2*i].ref_frame) {
+ dc += ab[-1+2*i].dc_coeff;
+ count++;
+ }
if (count == 0)
- dc = s->prev_dc[vp56_b6to3[i]][ref_frame];
+ dc = s->prev_dc[ff_vp56_b2p[b]][ref_frame];
else if (count == 2)
dc /= 2;
- s->block_coeff[i][idx] += dc;
- s->prev_dc[vp56_b6to3[i]][ref_frame] = s->block_coeff[i][idx];
- ab->dc_coeff = s->block_coeff[i][idx];
+ s->block_coeff[b][idx] += dc;
+ 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[i][idx];
+ lb->dc_coeff = s->block_coeff[b][idx];
lb->ref_frame = ref_frame;
- s->block_coeff[i][idx] *= s->dequant_dc;
- }
-}
-
-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] = clip_uint8(yuv[-pix_inc] + v);
- yuv[0] = clip_uint8(yuv[0] - v);
- yuv += line_inc;
+ s->block_coeff[b][idx] *= s->dequant_dc;
}
}
-static void vp56_deblock_filter(vp56_context_t *s, uint8_t *yuv,
- int stride, int dx, int dy)
+static void vp56_deblock_filter(VP56Context *s, uint8_t *yuv,
+ ptrdiff_t 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);
+ int t = ff_vp56_filter_threshold[s->quantizer];
+ 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, uint8_t *src,
- int stride, int x, int y)
+static void vp56_mc(VP56Context *s, int b, int plane, uint8_t *src,
+ ptrdiff_t stride, int x, int y)
{
- int plane = vp56_b6to3[b];
- uint8_t *dst= s->frames[VP56_FRAME_CURRENT].data[plane]+s->block_offset[b];
+ uint8_t *dst = s->frames[VP56_FRAME_CURRENT]->data[plane] + s->block_offset[b];
uint8_t *src_block;
int src_offset;
int overlap_offset = 0;
if (s->avctx->skip_loop_filter >= AVDISCARD_ALL ||
(s->avctx->skip_loop_filter >= AVDISCARD_NONKEY
- && !s->frames[VP56_FRAME_CURRENT].key_frame))
+ && !s->frames[VP56_FRAME_CURRENT]->key_frame))
deblock_filtering = 0;
dx = s->mv[b].x / s->vp56_coord_div[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->vdsp.emulated_edge_mc(s->edge_emu_buffer,
src + s->block_offset[b] + (dy-2)*stride + (dx-2),
- stride, 12, 12, x, y,
+ stride, stride,
+ 12, 12, x, y,
s->plane_width[plane],
s->plane_height[plane]);
src_block = s->edge_emu_buffer;
} else if (deblock_filtering) {
/* only need a 12x12 block, but there is no such dsp function, */
/* so copy a 16x12 block */
- s->dsp.put_pixels_tab[0][0](s->edge_emu_buffer,
- src + s->block_offset[b] + (dy-2)*stride + (dx-2),
- stride, 12);
+ s->hdsp.put_pixels_tab[0][0](s->edge_emu_buffer,
+ src + s->block_offset[b] + (dy-2)*stride + (dx-2),
+ stride, 12);
src_block = s->edge_emu_buffer;
src_offset = 2 + 2*stride;
} else {
s->filter(s, dst, src_block, src_offset, src_offset+overlap_offset,
stride, s->mv[b], mask, s->filter_selection, b<4);
else
- s->dsp.put_no_rnd_pixels_l2[1](dst, src_block+src_offset,
+ s->vp3dsp.put_no_rnd_pixels_l2(dst, src_block+src_offset,
src_block+src_offset+overlap_offset,
stride, 8);
} else {
- s->dsp.put_pixels_tab[1][0](dst, src_block+src_offset, stride, 8);
+ s->hdsp.put_pixels_tab[1][0](dst, src_block+src_offset, stride, 8);
}
}
-static void vp56_decode_mb(vp56_context_t *s, int row, int col)
+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;
- int b, plan, off;
+ VP56mb mb_type;
+ VP56Frame ref_frame;
+ int b, ab, b_max, plane, off;
- if (s->frames[VP56_FRAME_CURRENT].key_frame)
+ if (s->frames[VP56_FRAME_CURRENT]->key_frame)
mb_type = VP56_MB_INTRA;
else
mb_type = vp56_decode_mv(s, row, col);
- ref_frame = vp56_reference_frame[mb_type];
-
- memset(s->block_coeff, 0, sizeof(s->block_coeff));
+ ref_frame = ff_vp56_reference_frame[mb_type];
s->parse_coeff(s);
vp56_add_predictors_dc(s, ref_frame);
- frame_current = &s->frames[VP56_FRAME_CURRENT];
- frame_ref = &s->frames[ref_frame];
+ frame_current = s->frames[VP56_FRAME_CURRENT];
+ frame_ref = s->frames[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<6; b++) {
- plan = vp56_b6to3[b];
- s->dsp.idct_put(frame_current->data[plan] + s->block_offset[b],
- s->stride[plan], s->block_coeff[b]);
+ for (b=0; b<b_max; b++) {
+ plane = ff_vp56_b2p[b+ab];
+ s->vp3dsp.idct_put(frame_current->data[plane] + s->block_offset[b],
+ s->stride[plane], s->block_coeff[b]);
}
break;
case VP56_MB_INTER_NOVEC_PF:
case VP56_MB_INTER_NOVEC_GF:
- for (b=0; b<6; b++) {
- plan = vp56_b6to3[b];
+ for (b=0; b<b_max; b++) {
+ plane = ff_vp56_b2p[b+ab];
off = s->block_offset[b];
- s->dsp.put_pixels_tab[1][0](frame_current->data[plan] + off,
- frame_ref->data[plan] + off,
- s->stride[plan], 8);
- s->dsp.idct_add(frame_current->data[plan] + off,
- s->stride[plan], s->block_coeff[b]);
+ s->hdsp.put_pixels_tab[1][0](frame_current->data[plane] + off,
+ frame_ref->data[plane] + off,
+ s->stride[plane], 8);
+ s->vp3dsp.idct_add(frame_current->data[plane] + off,
+ s->stride[plane], s->block_coeff[b]);
}
break;
case VP56_MB_INTER_4V:
case VP56_MB_INTER_V1_GF:
case VP56_MB_INTER_V2_GF:
- for (b=0; b<6; b++) {
+ 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;
- plan = vp56_b6to3[b];
- vp56_mc(s, b, frame_ref->data[plan], s->stride[plan],
+ 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[plan] + s->block_offset[b],
- s->stride[plan], s->block_coeff[b]);
+ s->vp3dsp.idct_add(frame_current->data[plane] + s->block_offset[b],
+ s->stride[plane], s->block_coeff[b]);
}
break;
}
+
+ if (is_alpha) {
+ s->block_coeff[4][0] = 0;
+ s->block_coeff[5][0] = 0;
+ }
}
-static int vp56_size_changed(AVCodecContext *avctx, vp56_context_t *s)
+static int vp56_size_changed(AVCodecContext *avctx)
{
- int stride = s->frames[VP56_FRAME_CURRENT].linesize[0];
+ VP56Context *s = avctx->priv_data;
+ int stride = s->frames[VP56_FRAME_CURRENT]->linesize[0];
int i;
- s->plane_width[0] = s->avctx->coded_width;
- s->plane_width[1] = s->plane_width[2] = s->avctx->coded_width/2;
- s->plane_height[0] = s->avctx->coded_height;
- s->plane_height[1] = s->plane_height[2] = s->avctx->coded_height/2;
+ s->plane_width[0] = s->plane_width[3] = avctx->coded_width;
+ s->plane_width[1] = s->plane_width[2] = avctx->coded_width/2;
+ s->plane_height[0] = s->plane_height[3] = avctx->coded_height;
+ s->plane_height[1] = s->plane_height[2] = avctx->coded_height/2;
- for (i=0; i<3; i++)
- s->stride[i] = s->flip * s->frames[VP56_FRAME_CURRENT].linesize[i];
+ for (i=0; i<4; i++)
+ s->stride[i] = s->flip * s->frames[VP56_FRAME_CURRENT]->linesize[i];
- s->mb_width = (s->avctx->coded_width+15) / 16;
- s->mb_height = (s->avctx->coded_height+15) / 16;
+ s->mb_width = (avctx->coded_width +15) / 16;
+ s->mb_height = (avctx->coded_height+15) / 16;
if (s->mb_width > 1000 || s->mb_height > 1000) {
+ ff_set_dimensions(avctx, 0, 0);
av_log(avctx, AV_LOG_ERROR, "picture too big\n");
- return -1;
+ return AVERROR_INVALIDDATA;
}
s->above_blocks = av_realloc(s->above_blocks,
return 0;
}
-int vp56_decode_frame(AVCodecContext *avctx, void *data, int *data_size,
- uint8_t *buf, int buf_size)
+int ff_vp56_decode_frame(AVCodecContext *avctx, void *data, int *got_frame,
+ AVPacket *avpkt)
{
- vp56_context_t *s = avctx->priv_data;
- AVFrame *const p = &s->frames[VP56_FRAME_CURRENT];
- AVFrame *picture = data;
- int mb_row, mb_col, mb_row_flip, mb_offset = 0;
- int block, y, uv, stride_y, stride_uv;
- int golden_frame = 0;
+ const uint8_t *buf = avpkt->data;
+ VP56Context *s = avctx->priv_data;
+ AVFrame *const p = s->frames[VP56_FRAME_CURRENT];
+ int remaining_buf_size = avpkt->size;
+ int is_alpha, av_uninit(alpha_offset);
int res;
- res = s->parse_header(s, buf, buf_size, &golden_frame);
- if (!res)
- return -1;
-
- p->reference = 1;
- if (avctx->get_buffer(avctx, p) < 0) {
- av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
- return -1;
+ if (s->has_alpha) {
+ if (remaining_buf_size < 3)
+ return AVERROR_INVALIDDATA;
+ alpha_offset = bytestream_get_be24(&buf);
+ remaining_buf_size -= 3;
+ if (remaining_buf_size < alpha_offset)
+ return AVERROR_INVALIDDATA;
}
- if (res == 2)
- if (vp56_size_changed(avctx, s)) {
- avctx->release_buffer(avctx, p);
- return -1;
- }
+ for (is_alpha=0; is_alpha < 1+s->has_alpha; is_alpha++) {
+ int mb_row, mb_col, mb_row_flip, mb_offset = 0;
+ int block, y, uv;
+ ptrdiff_t stride_y, stride_uv;
+ int golden_frame = 0;
- if (p->key_frame) {
- p->pict_type = FF_I_TYPE;
- 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;
- vp56_parse_mb_type_models(s);
- s->parse_vector_models(s);
- s->mb_type = VP56_MB_INTER_NOVEC_PF;
- }
+ s->modelp = &s->models[is_alpha];
- s->parse_coeff_models(s);
+ res = s->parse_header(s, buf, remaining_buf_size, &golden_frame);
+ if (res < 0) {
+ int i;
+ for (i = 0; i < 4; i++)
+ av_frame_unref(s->frames[i]);
+ return res;
+ }
- memset(s->prev_dc, 0, sizeof(s->prev_dc));
- s->prev_dc[1][VP56_FRAME_CURRENT] = 128;
- s->prev_dc[2][VP56_FRAME_CURRENT] = 128;
+ if (res == VP56_SIZE_CHANGE) {
+ int i;
+ for (i = 0; i < 4; i++)
+ av_frame_unref(s->frames[i]);
+ if (is_alpha) {
+ ff_set_dimensions(avctx, 0, 0);
+ return AVERROR_INVALIDDATA;
+ }
+ }
- for (block=0; block < 4*s->mb_width+6; block++) {
- s->above_blocks[block].ref_frame = -1;
- s->above_blocks[block].dc_coeff = 0;
- s->above_blocks[block].not_null_dc = 0;
- }
- s->above_blocks[2*s->mb_width + 2].ref_frame = 0;
- s->above_blocks[3*s->mb_width + 4].ref_frame = 0;
+ if (!is_alpha) {
+ int ret = ff_get_buffer(avctx, p, AV_GET_BUFFER_FLAG_REF);
+ if (ret < 0) {
+ av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
+ return ret;
+ }
- stride_y = p->linesize[0];
- stride_uv = p->linesize[1];
+ if (res == VP56_SIZE_CHANGE)
+ if (vp56_size_changed(avctx)) {
+ av_frame_unref(p);
+ return AVERROR_INVALIDDATA;
+ }
+ }
- if (s->flip < 0)
- mb_offset = 7;
+ if (p->key_frame) {
+ 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 = AV_PICTURE_TYPE_P;
+ vp56_parse_mb_type_models(s);
+ s->parse_vector_models(s);
+ s->mb_type = VP56_MB_INTER_NOVEC_PF;
+ }
- /* main macroblocks loop */
- for (mb_row=0; mb_row<s->mb_height; mb_row++) {
- if (s->flip < 0)
- mb_row_flip = s->mb_height - mb_row - 1;
- else
- mb_row_flip = mb_row;
+ 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;
+ s->prev_dc[2][VP56_FRAME_CURRENT] = 128;
- for (block=0; block<4; block++) {
- s->left_block[block].ref_frame = -1;
- s->left_block[block].dc_coeff = 0;
- s->left_block[block].not_null_dc = 0;
- memset(s->coeff_ctx[block], 0, 64*sizeof(s->coeff_ctx[block][0]));
+ for (block=0; block < 4*s->mb_width+6; block++) {
+ s->above_blocks[block].ref_frame = VP56_FRAME_NONE;
+ s->above_blocks[block].dc_coeff = 0;
+ s->above_blocks[block].not_null_dc = 0;
}
- memset(s->coeff_ctx_last, 24, sizeof(s->coeff_ctx_last));
-
- s->above_block_idx[0] = 1;
- s->above_block_idx[1] = 2;
- s->above_block_idx[2] = 1;
- s->above_block_idx[3] = 2;
- s->above_block_idx[4] = 2*s->mb_width + 2 + 1;
- s->above_block_idx[5] = 3*s->mb_width + 4 + 1;
-
- s->block_offset[s->frbi] = (mb_row_flip*16 + mb_offset) * stride_y;
- s->block_offset[s->srbi] = s->block_offset[s->frbi] + 8*stride_y;
- s->block_offset[1] = s->block_offset[0] + 8;
- s->block_offset[3] = s->block_offset[2] + 8;
- s->block_offset[4] = (mb_row_flip*8 + mb_offset) * stride_uv;
- s->block_offset[5] = s->block_offset[4];
-
- for (mb_col=0; mb_col<s->mb_width; mb_col++) {
- vp56_decode_mb(s, mb_row, mb_col);
-
- for (y=0; y<4; y++) {
- s->above_block_idx[y] += 2;
- s->block_offset[y] += 16;
+ s->above_blocks[2*s->mb_width + 2].ref_frame = VP56_FRAME_CURRENT;
+ s->above_blocks[3*s->mb_width + 4].ref_frame = VP56_FRAME_CURRENT;
+
+ stride_y = p->linesize[0];
+ stride_uv = p->linesize[1];
+
+ if (s->flip < 0)
+ mb_offset = 7;
+
+ /* main macroblocks loop */
+ for (mb_row=0; mb_row<s->mb_height; mb_row++) {
+ if (s->flip < 0)
+ mb_row_flip = s->mb_height - mb_row - 1;
+ else
+ mb_row_flip = mb_row;
+
+ for (block=0; block<4; block++) {
+ s->left_block[block].ref_frame = VP56_FRAME_NONE;
+ s->left_block[block].dc_coeff = 0;
+ s->left_block[block].not_null_dc = 0;
}
+ memset(s->coeff_ctx, 0, sizeof(s->coeff_ctx));
+ memset(s->coeff_ctx_last, 24, sizeof(s->coeff_ctx_last));
+
+ s->above_block_idx[0] = 1;
+ s->above_block_idx[1] = 2;
+ s->above_block_idx[2] = 1;
+ s->above_block_idx[3] = 2;
+ s->above_block_idx[4] = 2*s->mb_width + 2 + 1;
+ s->above_block_idx[5] = 3*s->mb_width + 4 + 1;
+
+ s->block_offset[s->frbi] = (mb_row_flip*16 + mb_offset) * stride_y;
+ s->block_offset[s->srbi] = s->block_offset[s->frbi] + 8*stride_y;
+ s->block_offset[1] = s->block_offset[0] + 8;
+ s->block_offset[3] = s->block_offset[2] + 8;
+ s->block_offset[4] = (mb_row_flip*8 + mb_offset) * stride_uv;
+ s->block_offset[5] = s->block_offset[4];
+
+ for (mb_col=0; mb_col<s->mb_width; mb_col++) {
+ vp56_decode_mb(s, mb_row, mb_col, is_alpha);
+
+ for (y=0; y<4; y++) {
+ s->above_block_idx[y] += 2;
+ s->block_offset[y] += 16;
+ }
- for (uv=4; uv<6; uv++) {
- s->above_block_idx[uv] += 1;
- s->block_offset[uv] += 8;
+ for (uv=4; uv<6; uv++) {
+ s->above_block_idx[uv] += 1;
+ s->block_offset[uv] += 8;
+ }
}
}
- }
- if (s->frames[VP56_FRAME_PREVIOUS].data[0]
- && (s->frames[VP56_FRAME_PREVIOUS].data[0]
- != s->frames[VP56_FRAME_GOLDEN].data[0])) {
- avctx->release_buffer(avctx, &s->frames[VP56_FRAME_PREVIOUS]);
- }
- if (p->key_frame || golden_frame) {
- if (s->frames[VP56_FRAME_GOLDEN].data[0])
- avctx->release_buffer(avctx, &s->frames[VP56_FRAME_GOLDEN]);
- s->frames[VP56_FRAME_GOLDEN] = *p;
+ next:
+ if (p->key_frame || golden_frame) {
+ av_frame_unref(s->frames[VP56_FRAME_GOLDEN]);
+ if ((res = av_frame_ref(s->frames[VP56_FRAME_GOLDEN], p)) < 0)
+ return res;
+ }
+
+ if (s->has_alpha) {
+ FFSWAP(AVFrame *, s->frames[VP56_FRAME_GOLDEN],
+ s->frames[VP56_FRAME_GOLDEN2]);
+ buf += alpha_offset;
+ remaining_buf_size -= alpha_offset;
+ }
}
- s->frames[VP56_FRAME_PREVIOUS] = *p;
- *picture = *p;
- *data_size = sizeof(AVPicture);
+ av_frame_unref(s->frames[VP56_FRAME_PREVIOUS]);
+ FFSWAP(AVFrame *, s->frames[VP56_FRAME_CURRENT],
+ s->frames[VP56_FRAME_PREVIOUS]);
+
+ if ((res = av_frame_ref(data, p)) < 0)
+ return res;
+ *got_frame = 1;
- return buf_size;
+ return avpkt->size;
}
-void vp56_init(vp56_context_t *s, AVCodecContext *avctx, int flip)
+av_cold int ff_vp56_init(AVCodecContext *avctx, int flip, int has_alpha)
{
+ VP56Context *s = avctx->priv_data;
int i;
s->avctx = avctx;
- avctx->pix_fmt = PIX_FMT_YUV420P;
-
- if (s->avctx->idct_algo == FF_IDCT_AUTO)
- s->avctx->idct_algo = FF_IDCT_VP3;
- dsputil_init(&s->dsp, s->avctx);
- ff_init_scantable(s->dsp.idct_permutation, &s->scantable,ff_zigzag_direct);
-
- avcodec_set_dimensions(s->avctx, 0, 0);
+ avctx->pix_fmt = has_alpha ? AV_PIX_FMT_YUVA420P : AV_PIX_FMT_YUV420P;
+
+ ff_h264chroma_init(&s->h264chroma, 8);
+ ff_hpeldsp_init(&s->hdsp, avctx->flags);
+ ff_videodsp_init(&s->vdsp, 8);
+ ff_vp3dsp_init(&s->vp3dsp, avctx->flags);
+ ff_vp56dsp_init(&s->vp56dsp, avctx->codec->id);
+ for (i = 0; i < 64; i++) {
+#define TRANSPOSE(x) (x >> 3) | ((x & 7) << 3)
+ s->idct_scantable[i] = TRANSPOSE(ff_zigzag_direct[i]);
+#undef TRANSPOSE
+ }
- for (i=0; i<3; i++)
- s->frames[i].data[0] = NULL;
+ for (i = 0; i < FF_ARRAY_ELEMS(s->frames); i++) {
+ s->frames[i] = av_frame_alloc();
+ if (!s->frames[i]) {
+ ff_vp56_free(avctx);
+ return AVERROR(ENOMEM);
+ }
+ }
s->edge_emu_buffer_alloc = NULL;
s->above_blocks = NULL;
s->filter = NULL;
+ s->has_alpha = has_alpha;
if (flip) {
s->flip = -1;
s->frbi = 2;
s->frbi = 0;
s->srbi = 2;
}
+
+ return 0;
}
-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;
+ int i;
+
+ av_freep(&s->above_blocks);
+ av_freep(&s->macroblocks);
+ av_freep(&s->edge_emu_buffer_alloc);
+
+ for (i = 0; i < FF_ARRAY_ELEMS(s->frames); i++)
+ av_frame_free(&s->frames[i]);
- av_free(s->above_blocks);
- av_free(s->macroblocks);
- av_free(s->edge_emu_buffer_alloc);
- if (s->frames[VP56_FRAME_GOLDEN].data[0]
- && (s->frames[VP56_FRAME_PREVIOUS].data[0]
- != s->frames[VP56_FRAME_GOLDEN].data[0]))
- avctx->release_buffer(avctx, &s->frames[VP56_FRAME_GOLDEN]);
- if (s->frames[VP56_FRAME_PREVIOUS].data[0])
- avctx->release_buffer(avctx, &s->frames[VP56_FRAME_PREVIOUS]);
return 0;
}
projects / ffmpeg / blobdiff