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Diffstat (limited to 'libavcodec/vp56.c')
-rw-r--r--libavcodec/vp56.c78
1 files changed, 56 insertions, 22 deletions
diff --git a/libavcodec/vp56.c b/libavcodec/vp56.c
index 26c905f183..828c466c3c 100644
--- a/libavcodec/vp56.c
+++ b/libavcodec/vp56.c
@@ -22,6 +22,7 @@
*/
#include "avcodec.h"
+#include "bytestream.h"
#include "vp56.h"
#include "vp56data.h"
@@ -394,12 +395,12 @@ static void vp56_mc(vp56_context_t *s, int b, int plane, uint8_t *src,
}
}
-static void vp56_decode_mb(vp56_context_t *s, int row, int col)
+static void vp56_decode_mb(vp56_context_t *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;
+ int b, ab, b_max, plan, off;
if (s->framep[VP56_FRAME_CURRENT]->key_frame)
mb_type = VP56_MB_INTRA;
@@ -416,10 +417,13 @@ static void vp56_decode_mb(vp56_context_t *s, int row, int col)
frame_current = s->framep[VP56_FRAME_CURRENT];
frame_ref = s->framep[ref_frame];
+ 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_b2p[b];
+ for (b=0; b<b_max; b++) {
+ plan = vp56_b2p[b+ab];
s->dsp.idct_put(frame_current->data[plan] + s->block_offset[b],
s->stride[plan], s->block_coeff[b]);
}
@@ -427,8 +431,8 @@ static void vp56_decode_mb(vp56_context_t *s, int row, int col)
case VP56_MB_INTER_NOVEC_PF:
case VP56_MB_INTER_NOVEC_GF:
- for (b=0; b<6; b++) {
- plan = vp56_b2p[b];
+ for (b=0; b<b_max; b++) {
+ plan = 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,
@@ -445,10 +449,10 @@ static void vp56_decode_mb(vp56_context_t *s, int row, int col)
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_b2p[b];
+ plan = vp56_b2p[b+ab];
vp56_mc(s, b, plan, frame_ref->data[plan], s->stride[plan],
16*col+x_off, 16*row+y_off);
s->dsp.idct_add(frame_current->data[plan] + s->block_offset[b],
@@ -464,12 +468,12 @@ static int vp56_size_changed(AVCodecContext *avctx)
int stride = s->framep[VP56_FRAME_CURRENT]->linesize[0];
int i;
- s->plane_width[0] = avctx->coded_width;
+ 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] = avctx->coded_height;
+ 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++)
+ for (i=0; i<4; i++)
s->stride[i] = s->flip * s->framep[VP56_FRAME_CURRENT]->linesize[i];
s->mb_width = (avctx->coded_width +15) / 16;
@@ -498,17 +502,26 @@ int vp56_decode_frame(AVCodecContext *avctx, void *data, int *data_size,
{
vp56_context_t *s = avctx->priv_data;
AVFrame *const p = s->framep[VP56_FRAME_CURRENT];
+ int is_alpha, alpha_offset;
+
+ if (s->has_alpha) {
+ alpha_offset = bytestream_get_be24(&buf);
+ buf_size -= 3;
+ }
+
+ 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, stride_y, stride_uv;
int golden_frame = 0;
int res;
- s->modelp = &s->models;
+ s->modelp = &s->models[is_alpha];
res = s->parse_header(s, buf, buf_size, &golden_frame);
if (!res)
return -1;
+ if (!is_alpha) {
p->reference = 1;
if (avctx->get_buffer(avctx, p) < 0) {
av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
@@ -520,6 +533,7 @@ int vp56_decode_frame(AVCodecContext *avctx, void *data, int *data_size,
avctx->release_buffer(avctx, p);
return -1;
}
+ }
if (p->key_frame) {
p->pict_type = FF_I_TYPE;
@@ -583,7 +597,7 @@ int vp56_decode_frame(AVCodecContext *avctx, void *data, int *data_size,
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);
+ vp56_decode_mb(s, mb_row, mb_col, is_alpha);
for (y=0; y<4; y++) {
s->above_block_idx[y] += 2;
@@ -597,16 +611,32 @@ int vp56_decode_frame(AVCodecContext *avctx, void *data, int *data_size,
}
}
- if (s->framep[VP56_FRAME_PREVIOUS] == s->framep[VP56_FRAME_GOLDEN])
- FFSWAP(AVFrame *, s->framep[VP56_FRAME_PREVIOUS],
- s->framep[VP56_FRAME_UNUSED]);
- else if (s->framep[VP56_FRAME_PREVIOUS]->data[0])
- avctx->release_buffer(avctx, s->framep[VP56_FRAME_PREVIOUS]);
if (p->key_frame || golden_frame) {
- if (s->framep[VP56_FRAME_GOLDEN]->data[0])
+ if (s->framep[VP56_FRAME_GOLDEN]->data[0] &&
+ s->framep[VP56_FRAME_GOLDEN] != s->framep[VP56_FRAME_GOLDEN2])
avctx->release_buffer(avctx, s->framep[VP56_FRAME_GOLDEN]);
s->framep[VP56_FRAME_GOLDEN] = p;
}
+
+ if (s->has_alpha) {
+ FFSWAP(AVFrame *, s->framep[VP56_FRAME_GOLDEN],
+ s->framep[VP56_FRAME_GOLDEN2]);
+ buf += alpha_offset;
+ buf_size -= alpha_offset;
+ }
+ }
+
+ if (s->framep[VP56_FRAME_PREVIOUS] == s->framep[VP56_FRAME_GOLDEN] ||
+ s->framep[VP56_FRAME_PREVIOUS] == s->framep[VP56_FRAME_GOLDEN2]) {
+ if (s->framep[VP56_FRAME_UNUSED] != s->framep[VP56_FRAME_GOLDEN] &&
+ s->framep[VP56_FRAME_UNUSED] != s->framep[VP56_FRAME_GOLDEN2])
+ FFSWAP(AVFrame *, s->framep[VP56_FRAME_PREVIOUS],
+ s->framep[VP56_FRAME_UNUSED]);
+ else
+ FFSWAP(AVFrame *, s->framep[VP56_FRAME_PREVIOUS],
+ s->framep[VP56_FRAME_UNUSED2]);
+ } else if (s->framep[VP56_FRAME_PREVIOUS]->data[0])
+ avctx->release_buffer(avctx, s->framep[VP56_FRAME_PREVIOUS]);
FFSWAP(AVFrame *, s->framep[VP56_FRAME_CURRENT],
s->framep[VP56_FRAME_PREVIOUS]);
@@ -616,13 +646,13 @@ int vp56_decode_frame(AVCodecContext *avctx, void *data, int *data_size,
return buf_size;
}
-void vp56_init(AVCodecContext *avctx, int flip)
+void vp56_init(AVCodecContext *avctx, int flip, int has_alpha)
{
vp56_context_t *s = avctx->priv_data;
int i;
s->avctx = avctx;
- avctx->pix_fmt = PIX_FMT_YUV420P;
+ avctx->pix_fmt = has_alpha ? PIX_FMT_YUVA420P : PIX_FMT_YUV420P;
if (avctx->idct_algo == FF_IDCT_AUTO)
avctx->idct_algo = FF_IDCT_VP3;
@@ -631,9 +661,10 @@ void vp56_init(AVCodecContext *avctx, int flip)
avcodec_set_dimensions(avctx, 0, 0);
- for (i=0; i<3; i++)
+ for (i=0; i<4; i++)
s->framep[i] = &s->frames[i];
s->framep[VP56_FRAME_UNUSED] = s->framep[VP56_FRAME_GOLDEN];
+ s->framep[VP56_FRAME_UNUSED2] = s->framep[VP56_FRAME_GOLDEN2];
s->edge_emu_buffer_alloc = NULL;
s->above_blocks = NULL;
@@ -643,6 +674,7 @@ void vp56_init(AVCodecContext *avctx, int flip)
s->filter = NULL;
+ s->has_alpha = has_alpha;
if (flip) {
s->flip = -1;
s->frbi = 2;
@@ -663,6 +695,8 @@ int vp56_free(AVCodecContext *avctx)
av_free(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])
+ avctx->release_buffer(avctx, s->framep[VP56_FRAME_GOLDEN2]);
if (s->framep[VP56_FRAME_PREVIOUS]->data[0])
avctx->release_buffer(avctx, s->framep[VP56_FRAME_PREVIOUS]);
return 0;
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-15 19:34:39 +0000