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indeo5: set transform_size like indeo4 does to prevent useage of too large transforms.

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I dont know if this is needed, its a precautionary change.

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2012-04-15 13:33:18 +02:00
parent 0846719dd1
commit af38823709
1 changed files with 6 additions and 0 deletions
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6
libavcodec/indeo5.c
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@ -184,30 +184,35 @@ static int decode_gop_header(IVI5DecContext *ctx, AVCodecContext *avctx)
band->inv_transform = ff_ivi_inverse_slant_8x8;
band->dc_transform = ff_ivi_dc_slant_2d;
band->scan = ff_zigzag_direct;
band->transform_size= 8;
break;
case 1:
band->inv_transform = ff_ivi_row_slant8;
band->dc_transform = ff_ivi_dc_row_slant;
band->scan = ff_ivi_vertical_scan_8x8;
band->transform_size= 8;
break;
case 2:
band->inv_transform = ff_ivi_col_slant8;
band->dc_transform = ff_ivi_dc_col_slant;
band->scan = ff_ivi_horizontal_scan_8x8;
band->transform_size= 8;
break;
case 3:
band->inv_transform = ff_ivi_put_pixels_8x8;
band->dc_transform = ff_ivi_put_dc_pixel_8x8;
band->scan = ff_ivi_horizontal_scan_8x8;
band->transform_size= 8;
break;
case 4:
band->inv_transform = ff_ivi_inverse_slant_4x4;
band->dc_transform = ff_ivi_dc_slant_2d;
band->scan = ff_ivi_direct_scan_4x4;
band->transform_size= 4;
break;
}
@ -258,6 +263,7 @@ static int decode_gop_header(IVI5DecContext *ctx, AVCodecContext *avctx)
band2->inv_transform = band1->inv_transform;
band2->dc_transform = band1->dc_transform;
band2->is_2d_trans = band1->is_2d_trans;
band2->transform_size= band1->transform_size;
}
/* reallocate internal structures if needed */