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eamad: use the AVFrame API properly.

This commit is contained in:
Anton Khirnov 2013-11-09 10:14:46 +01:00
parent 4e7e8055a7
commit e4155f15b3
1 changed files with 22 additions and 17 deletions
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39
libavcodec/eamad.c
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@ -45,7 +45,7 @@
typedef struct MadContext {
AVCodecContext *avctx;
DSPContext dsp;
AVFrame last_frame;
AVFrame *last_frame;
GetBitContext gb;
void *bitstream_buf;
unsigned int bitstream_buf_size;
@ -65,6 +65,11 @@ static av_cold int decode_init(AVCodecContext *avctx)
ff_init_scantable_permutation(s->dsp.idct_permutation, FF_NO_IDCT_PERM);
ff_init_scantable(s->dsp.idct_permutation, &s->scantable, ff_zigzag_direct);
ff_mpeg12_init_vlcs();
s->last_frame = av_frame_alloc();
if (!s->last_frame)
return AVERROR(ENOMEM);
return 0;
}
@ -84,14 +89,14 @@ static inline void comp_block(MadContext *t, AVFrame *frame,
if (j < 4) {
comp(frame->data[0] + (mb_y*16 + ((j&2)<<2))*frame->linesize[0] + mb_x*16 + ((j&1)<<3),
frame->linesize[0],
t->last_frame.data[0] + (mb_y*16 + ((j&2)<<2) + mv_y)*t->last_frame.linesize[0] + mb_x*16 + ((j&1)<<3) + mv_x,
t->last_frame.linesize[0], add);
t->last_frame->data[0] + (mb_y*16 + ((j&2)<<2) + mv_y)*t->last_frame->linesize[0] + mb_x*16 + ((j&1)<<3) + mv_x,
t->last_frame->linesize[0], add);
} else if (!(t->avctx->flags & CODEC_FLAG_GRAY)) {
int index = j - 3;
comp(frame->data[index] + (mb_y*8)*frame->linesize[index] + mb_x * 8,
frame->linesize[index],
t->last_frame.data[index] + (mb_y * 8 + (mv_y/2))*t->last_frame.linesize[index] + mb_x * 8 + (mv_x/2),
t->last_frame.linesize[index], add);
t->last_frame->data[index] + (mb_y * 8 + (mv_y/2))*t->last_frame->linesize[index] + mb_x * 8 + (mv_x/2),
t->last_frame->linesize[index], add);
}
}
@ -250,7 +255,7 @@ static int decode_frame(AVCodecContext *avctx,
buf += 16;
if (avctx->width != width || avctx->height != height) {
av_frame_unref(&s->last_frame);
av_frame_unref(s->last_frame);
if ((ret = ff_set_dimensions(avctx, width, height)) < 0)
return ret;
}
@ -260,17 +265,17 @@ static int decode_frame(AVCodecContext *avctx,
return ret;
}
if (inter && !s->last_frame.data[0]) {
if (inter && !s->last_frame->data[0]) {
av_log(avctx, AV_LOG_WARNING, "Missing reference frame.\n");
ret = ff_get_buffer(avctx, &s->last_frame, AV_GET_BUFFER_FLAG_REF);
ret = ff_get_buffer(avctx, s->last_frame, AV_GET_BUFFER_FLAG_REF);
if (ret < 0)
return ret;
memset(s->last_frame.data[0], 0, s->last_frame.height *
s->last_frame.linesize[0]);
memset(s->last_frame.data[1], 0x80, s->last_frame.height / 2 *
s->last_frame.linesize[1]);
memset(s->last_frame.data[2], 0x80, s->last_frame.height / 2 *
s->last_frame.linesize[2]);
memset(s->last_frame->data[0], 0, s->last_frame->height *
s->last_frame->linesize[0]);
memset(s->last_frame->data[1], 0x80, s->last_frame->height / 2 *
s->last_frame->linesize[1]);
memset(s->last_frame->data[2], 0x80, s->last_frame->height / 2 *
s->last_frame->linesize[2]);
}
av_fast_padded_malloc(&s->bitstream_buf, &s->bitstream_buf_size,
@ -287,8 +292,8 @@ static int decode_frame(AVCodecContext *avctx,
*got_frame = 1;
if (chunk_type != MADe_TAG) {
av_frame_unref(&s->last_frame);
if ((ret = av_frame_ref(&s->last_frame, frame)) < 0)
av_frame_unref(s->last_frame);
if ((ret = av_frame_ref(s->last_frame, frame)) < 0)
return ret;
}
@ -298,7 +303,7 @@ static int decode_frame(AVCodecContext *avctx,
static av_cold int decode_end(AVCodecContext *avctx)
{
MadContext *t = avctx->priv_data;
av_frame_unref(&t->last_frame);
av_frame_free(&t->last_frame);
av_free(t->bitstream_buf);
return 0;
}