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vp3: Move table allocation code into a new function

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Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>
This commit is contained in:
Alexander Strange 2011-02-05 00:28:28 -05:00 committed by Ronald S. Bultje
parent e8dcd73058
commit edbb0c0708
1 changed files with 33 additions and 23 deletions
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56
libavcodec/vp3.c
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@ -1511,6 +1511,38 @@ static void render_slice(Vp3DecodeContext *s, int slice)
vp3_draw_horiz_band(s, FFMIN((32 << s->chroma_y_shift) * (slice + 1) -16, s->height-16));
}
/// Allocate tables for per-frame data in Vp3DecodeContext
static av_cold int allocate_tables(AVCodecContext *avctx)
{
Vp3DecodeContext *s = avctx->priv_data;
int y_fragment_count, c_fragment_count;
y_fragment_count = s->fragment_width[0] * s->fragment_height[0];
c_fragment_count = s->fragment_width[1] * s->fragment_height[1];
s->superblock_coding = av_malloc(s->superblock_count);
s->all_fragments = av_malloc(s->fragment_count * sizeof(Vp3Fragment));
s->coded_fragment_list[0] = av_malloc(s->fragment_count * sizeof(int));
s->dct_tokens_base = av_malloc(64*s->fragment_count * sizeof(*s->dct_tokens_base));
s->motion_val[0] = av_malloc(y_fragment_count * sizeof(*s->motion_val[0]));
s->motion_val[1] = av_malloc(c_fragment_count * sizeof(*s->motion_val[1]));
/* work out the block mapping tables */
s->superblock_fragments = av_malloc(s->superblock_count * 16 * sizeof(int));
s->macroblock_coding = av_malloc(s->macroblock_count + 1);
if (!s->superblock_coding || !s->all_fragments || !s->dct_tokens_base ||
!s->coded_fragment_list[0] || !s->superblock_fragments || !s->macroblock_coding ||
!s->motion_val[0] || !s->motion_val[1]) {
vp3_decode_end(avctx);
return -1;
}
init_block_mapping(s);
return 0;
}
/*
* This is the ffmpeg/libavcodec API init function.
*/
@ -1560,7 +1592,6 @@ static av_cold int vp3_decode_init(AVCodecContext *avctx)
s->superblock_count = s->y_superblock_count + (s->c_superblock_count * 2);
s->u_superblock_start = s->y_superblock_count;
s->v_superblock_start = s->u_superblock_start + s->c_superblock_count;
s->superblock_coding = av_malloc(s->superblock_count);
s->macroblock_width = (s->width + 15) / 16;
s->macroblock_height = (s->height + 15) / 16;
@ -1578,18 +1609,6 @@ static av_cold int vp3_decode_init(AVCodecContext *avctx)
s->fragment_start[1] = y_fragment_count;
s->fragment_start[2] = y_fragment_count + c_fragment_count;
s->all_fragments = av_malloc(s->fragment_count * sizeof(Vp3Fragment));
s->coded_fragment_list[0] = av_malloc(s->fragment_count * sizeof(int));
s->dct_tokens_base = av_malloc(64*s->fragment_count * sizeof(*s->dct_tokens_base));
s->motion_val[0] = av_malloc(y_fragment_count * sizeof(*s->motion_val[0]));
s->motion_val[1] = av_malloc(c_fragment_count * sizeof(*s->motion_val[1]));
if (!s->superblock_coding || !s->all_fragments || !s->dct_tokens_base ||
!s->coded_fragment_list[0] || !s->motion_val[0] || !s->motion_val[1]) {
vp3_decode_end(avctx);
return -1;
}
if (!s->theora_tables)
{
for (i = 0; i < 64; i++) {
@ -1689,22 +1708,13 @@ static av_cold int vp3_decode_init(AVCodecContext *avctx)
&motion_vector_vlc_table[0][1], 2, 1,
&motion_vector_vlc_table[0][0], 2, 1, 0);
/* work out the block mapping tables */
s->superblock_fragments = av_malloc(s->superblock_count * 16 * sizeof(int));
s->macroblock_coding = av_malloc(s->macroblock_count + 1);
if (!s->superblock_fragments || !s->macroblock_coding) {
vp3_decode_end(avctx);
return -1;
}
init_block_mapping(s);
for (i = 0; i < 3; i++) {
s->current_frame.data[i] = NULL;
s->last_frame.data[i] = NULL;
s->golden_frame.data[i] = NULL;
}
return 0;
return allocate_tables(avctx);
vlc_fail:
av_log(avctx, AV_LOG_FATAL, "Invalid huffman table\n");