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mss4: make code independent of sizeof(AVFrame) 

Also fixes #2455.

Signed-off-by: Paul B Mahol <onemda@gmail.com>
This commit is contained in:
Paul B Mahol 2013-04-11 10:37:36 +00:00
parent b6d5a948f9
commit 310bf28354
1 changed files with 22 additions and 17 deletions
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39
libavcodec/mss4.c
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@ -126,7 +126,7 @@ static const uint8_t mss4_vec_entry_vlc_syms[2][9] = {
#define MAX_ENTRIES 162
typedef struct MSS4Context {
AVFrame pic;
AVFrame *pic;
VLC dc_vlc[2], ac_vlc[2];
VLC vec_entry_vlc[2];
@ -297,10 +297,10 @@ static int mss4_decode_dct_block(MSS4Context *c, GetBitContext *gb,
return ret;
c->prev_dc[0][mb_x * 2 + i] = c->dc_cache[j][LEFT];
ff_mss34_dct_put(out + xpos * 8, c->pic.linesize[0],
ff_mss34_dct_put(out + xpos * 8, c->pic->linesize[0],
c->block);
}
out += 8 * c->pic.linesize[0];
out += 8 * c->pic->linesize[0];
}
for (i = 1; i < 3; i++) {
@ -320,7 +320,7 @@ static int mss4_decode_dct_block(MSS4Context *c, GetBitContext *gb,
for (j = 0; j < 16; j++) {
for (k = 0; k < 8; k++)
AV_WN16A(out + k * 2, c->imgbuf[i][k + (j & ~1) * 4] * 0x101);
out += c->pic.linesize[i];
out += c->pic->linesize[i];
}
}
@ -481,7 +481,7 @@ static int mss4_decode_image_block(MSS4Context *ctx, GetBitContext *gb,
for (i = 0; i < 3; i++)
for (j = 0; j < 16; j++)
memcpy(picdst[i] + mb_x * 16 + j * ctx->pic.linesize[i],
memcpy(picdst[i] + mb_x * 16 + j * ctx->pic->linesize[i],
ctx->imgbuf[i] + j * 16, 16);
return 0;
@ -554,14 +554,14 @@ static int mss4_decode_frame(AVCodecContext *avctx, void *data, int *got_frame,
return AVERROR_INVALIDDATA;
}
if ((ret = ff_reget_buffer(avctx, &c->pic)) < 0)
if ((ret = ff_reget_buffer(avctx, c->pic)) < 0)
return ret;
c->pic.key_frame = (frame_type == INTRA_FRAME);
c->pic.pict_type = (frame_type == INTRA_FRAME) ? AV_PICTURE_TYPE_I
c->pic->key_frame = (frame_type == INTRA_FRAME);
c->pic->pict_type = (frame_type == INTRA_FRAME) ? AV_PICTURE_TYPE_I
: AV_PICTURE_TYPE_P;
if (frame_type == SKIP_FRAME) {
*got_frame = 1;
if ((ret = av_frame_ref(data, &c->pic)) < 0)
if ((ret = av_frame_ref(data, c->pic)) < 0)
return ret;
return buf_size;
@ -577,9 +577,9 @@ static int mss4_decode_frame(AVCodecContext *avctx, void *data, int *got_frame,
mb_width = FFALIGN(width, 16) >> 4;
mb_height = FFALIGN(height, 16) >> 4;
dst[0] = c->pic.data[0];
dst[1] = c->pic.data[1];
dst[2] = c->pic.data[2];
dst[0] = c->pic->data[0];
dst[1] = c->pic->data[1];
dst[2] = c->pic->data[2];
memset(c->prev_vec, 0, sizeof(c->prev_vec));
for (y = 0; y < mb_height; y++) {
@ -613,12 +613,12 @@ static int mss4_decode_frame(AVCodecContext *avctx, void *data, int *got_frame,
if (blk_type != DCT_BLOCK)
mss4_update_dc_cache(c, x);
}
dst[0] += c->pic.linesize[0] * 16;
dst[1] += c->pic.linesize[1] * 16;
dst[2] += c->pic.linesize[2] * 16;
dst[0] += c->pic->linesize[0] * 16;
dst[1] += c->pic->linesize[1] * 16;
dst[2] += c->pic->linesize[2] * 16;
}
if ((ret = av_frame_ref(data, &c->pic)) < 0)
if ((ret = av_frame_ref(data, c->pic)) < 0)
return ret;
*got_frame = 1;
@ -631,6 +631,10 @@ static av_cold int mss4_decode_init(AVCodecContext *avctx)
MSS4Context * const c = avctx->priv_data;
int i;
c->pic = av_frame_alloc();
if (!c->pic)
return AVERROR(ENOMEM);
if (mss4_init_vlcs(c)) {
av_log(avctx, AV_LOG_ERROR, "Cannot initialise VLCs\n");
mss4_free_vlcs(c);
@ -656,7 +660,8 @@ static av_cold int mss4_decode_end(AVCodecContext *avctx)
MSS4Context * const c = avctx->priv_data;
int i;
av_frame_unref(&c->pic);
av_frame_free(&c->pic);
for (i = 0; i < 3; i++)
av_freep(&c->prev_dc[i]);
mss4_free_vlcs(c);