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Diffstat (limited to 'libavcodec/vc1dec.c')
-rw-r--r--libavcodec/vc1dec.c45
1 files changed, 25 insertions, 20 deletions
diff --git a/libavcodec/vc1dec.c b/libavcodec/vc1dec.c
index 771574df78..96f6d655cb 100644
--- a/libavcodec/vc1dec.c
+++ b/libavcodec/vc1dec.c
@@ -508,7 +508,7 @@ static void vc1_mc_1mv(VC1Context *v, int dir)
}
if (v->field_mode) { // interlaced field picture
if (!dir) {
- if ((v->cur_field_type != v->ref_field_type[dir]) && v->cur_field_type) {
+ if ((v->cur_field_type != v->ref_field_type[dir]) && v->second_field) {
srcY = s->current_picture.f.data[0];
srcU = s->current_picture.f.data[1];
srcV = s->current_picture.f.data[2];
@@ -631,7 +631,7 @@ static void vc1_mc_1mv(VC1Context *v, int dir)
srcY += s->mspel * (1 + s->linesize);
}
- if (v->field_mode && v->cur_field_type) {
+ if (v->field_mode && v->second_field) {
off = s->current_picture_ptr->f.linesize[0];
off_uv = s->current_picture_ptr->f.linesize[1];
} else {
@@ -697,7 +697,7 @@ static void vc1_mc_4mv_luma(VC1Context *v, int n, int dir)
if (!dir) {
if (v->field_mode) {
- if ((v->cur_field_type != v->ref_field_type[dir]) && v->cur_field_type)
+ if ((v->cur_field_type != v->ref_field_type[dir]) && v->second_field)
srcY = s->current_picture.f.data[0];
else
srcY = s->last_picture.f.data[0];
@@ -766,7 +766,7 @@ static void vc1_mc_4mv_luma(VC1Context *v, int n, int dir)
off = ((n > 1) ? s->linesize : 0) + (n & 1) * 8;
else
off = s->linesize * 4 * (n & 2) + (n & 1) * 8;
- if (v->field_mode && v->cur_field_type)
+ if (v->field_mode && v->second_field)
off += s->current_picture_ptr->f.linesize[0];
src_x = s->mb_x * 16 + (n & 1) * 8 + (mx >> 2);
@@ -994,7 +994,7 @@ static void vc1_mc_4mv_chroma(VC1Context *v, int dir)
srcU += s->current_picture_ptr->f.linesize[1];
srcV += s->current_picture_ptr->f.linesize[2];
}
- off = v->cur_field_type ? s->current_picture_ptr->f.linesize[1] : 0;
+ off = v->second_field ? s->current_picture_ptr->f.linesize[1] : 0;
}
if (v->rangeredfrm || (v->mv_mode == MV_PMODE_INTENSITY_COMP)
@@ -2048,7 +2048,7 @@ static void vc1_interp_mc(VC1Context *v)
srcY += s->mspel * (1 + s->linesize);
}
- if (v->field_mode && v->cur_field_type) {
+ if (v->field_mode && v->second_field) {
off = s->current_picture_ptr->f.linesize[0];
off_uv = s->current_picture_ptr->f.linesize[1];
} else {
@@ -4055,7 +4055,7 @@ static int vc1_decode_p_mb_intfi(VC1Context *v)
continue;
v->vc1dsp.vc1_inv_trans_8x8(s->block[i]);
off = (i & 4) ? 0 : ((i & 1) * 8 + (i & 2) * 4 * s->linesize);
- off += v->cur_field_type ? ((i & 4) ? s->current_picture_ptr->f.linesize[1] : s->current_picture_ptr->f.linesize[0]) : 0;
+ off += v->second_field ? ((i & 4) ? s->current_picture_ptr->f.linesize[1] : s->current_picture_ptr->f.linesize[0]) : 0;
s->dsp.put_signed_pixels_clamped(s->block[i], s->dest[dst_idx] + off, (i & 4) ? s->uvlinesize : s->linesize);
// TODO: loop filter
}
@@ -4102,7 +4102,7 @@ static int vc1_decode_p_mb_intfi(VC1Context *v)
dst_idx += i >> 2;
val = ((cbp >> (5 - i)) & 1);
off = (i & 4) ? 0 : (i & 1) * 8 + (i & 2) * 4 * s->linesize;
- if (v->cur_field_type)
+ if (v->second_field)
off += (i & 4) ? s->current_picture_ptr->f.linesize[1] : s->current_picture_ptr->f.linesize[0];
if (val) {
pat = vc1_decode_p_block(v, s->block[i], i, mquant, ttmb,
@@ -4332,7 +4332,7 @@ static void vc1_decode_b_mb_intfi(VC1Context *v)
for (j = 0; j < 64; j++)
s->block[i][j] <<= 1;
off = (i & 4) ? 0 : ((i & 1) * 8 + (i & 2) * 4 * s->linesize);
- off += v->cur_field_type ? ((i & 4) ? s->current_picture_ptr->f.linesize[1] : s->current_picture_ptr->f.linesize[0]) : 0;
+ off += v->second_field ? ((i & 4) ? s->current_picture_ptr->f.linesize[1] : s->current_picture_ptr->f.linesize[0]) : 0;
s->dsp.put_signed_pixels_clamped(s->block[i], s->dest[dst_idx] + off, (i & 4) ? s->uvlinesize : s->linesize);
// TODO: yet to perform loop filter
}
@@ -4414,7 +4414,7 @@ static void vc1_decode_b_mb_intfi(VC1Context *v)
dst_idx += i >> 2;
val = ((cbp >> (5 - i)) & 1);
off = (i & 4) ? 0 : (i & 1) * 8 + (i & 2) * 4 * s->linesize;
- if (v->cur_field_type)
+ if (v->second_field)
off += (i & 4) ? s->current_picture_ptr->f.linesize[1] : s->current_picture_ptr->f.linesize[0];
if (val) {
vc1_decode_p_block(v, s->block[i], i, mquant, ttmb,
@@ -5425,8 +5425,8 @@ static int vc1_decode_frame(AVCodecContext *avctx, void *data,
MpegEncContext *s = &v->s;
AVFrame *pict = data;
uint8_t *buf2 = NULL;
- uint8_t *buf_field2 = NULL;
const uint8_t *buf_start = buf;
+ uint8_t *tmp;
int mb_height, n_slices1=-1;
struct {
uint8_t *buf;
@@ -5495,9 +5495,6 @@ static int vc1_decode_frame(AVCodecContext *avctx, void *data,
slices[n_slices].mby_start = s->mb_height >> 1;
n_slices1 = n_slices - 1; // index of the last slice of the first field
n_slices++;
- // not necessary, ad hoc until I find a way to handle WVC1i
- buf_field2 = av_mallocz(buf_size + FF_INPUT_BUFFER_PADDING_SIZE);
- vc1_unescape_buffer(start + 4, size, buf_field2);
break;
}
case VC1_CODE_ENTRYPOINT: /* it should be before frame data */
@@ -5525,14 +5522,26 @@ static int vc1_decode_frame(AVCodecContext *avctx, void *data,
}
} else if (v->interlace && ((buf[0] & 0xC0) == 0xC0)) { /* WVC1 interlaced stores both fields divided by marker */
const uint8_t *divider;
+ int buf_size3;
divider = find_next_marker(buf, buf + buf_size);
if ((divider == (buf + buf_size)) || AV_RB32(divider) != VC1_CODE_FIELD) {
av_log(avctx, AV_LOG_ERROR, "Error in WVC1 interlaced frame\n");
goto err;
} else { // found field marker, unescape second field
- buf_field2 = av_mallocz(buf_size + FF_INPUT_BUFFER_PADDING_SIZE);
- vc1_unescape_buffer(divider + 4, buf + buf_size - divider - 4, buf_field2);
+ tmp = av_realloc(slices, sizeof(*slices) * (n_slices+1));
+ if (!tmp)
+ goto err;
+ slices = tmp;
+ slices[n_slices].buf = av_mallocz(buf_size + FF_INPUT_BUFFER_PADDING_SIZE);
+ if (!slices[n_slices].buf)
+ goto err;
+ buf_size3 = vc1_unescape_buffer(divider + 4, buf + buf_size - divider - 4, slices[n_slices].buf);
+ init_get_bits(&slices[n_slices].gb, slices[n_slices].buf,
+ buf_size3 << 3);
+ slices[n_slices].mby_start = s->mb_height >> 1;
+ n_slices1 = n_slices - 1;
+ n_slices++;
}
buf_size2 = vc1_unescape_buffer(buf, divider - buf, buf2);
} else {
@@ -5705,10 +5714,7 @@ static int vc1_decode_frame(AVCodecContext *avctx, void *data,
s->gb = slices[i].gb;
}
if (v->field_mode) {
- av_free(buf_field2);
v->second_field = 0;
- }
- if (v->field_mode) {
if (s->pict_type == AV_PICTURE_TYPE_B) {
memcpy(v->mv_f_base, v->mv_f_next_base,
2 * (s->b8_stride * (s->mb_height * 2 + 1) + s->mb_stride * (s->mb_height + 1) * 2));
@@ -5765,7 +5771,6 @@ err:
for (i = 0; i < n_slices; i++)
av_free(slices[i].buf);
av_free(slices);
- av_free(buf_field2);
return -1;
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-07-31 04:23:00 +0000