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#include "vl_data.h"
/*
* Represents 8 triangles (4 quads, 1 per block) in noormalized coords
* that render a macroblock.
* Need to be scaled to cover mbW*mbH macroblock pixels and translated into
* position on target surface.
*/
const struct VL_VERTEX2F vl_mb_vertex_positions[24] =
{
{0.0f, 0.0f}, {0.0f, 0.5f}, {0.5f, 0.0f},
{0.5f, 0.0f}, {0.0f, 0.5f}, {0.5f, 0.5f},
{0.5f, 0.0f}, {0.5f, 0.5f}, {1.0f, 0.0f},
{1.0f, 0.0f}, {0.5f, 0.5f}, {1.0f, 0.5f},
{0.0f, 0.5f}, {0.0f, 1.0f}, {0.5f, 0.5f},
{0.5f, 0.5f}, {0.0f, 1.0f}, {0.5f, 1.0f},
{0.5f, 0.5f}, {0.5f, 1.0f}, {1.0f, 0.5f},
{1.0f, 0.5f}, {0.5f, 1.0f}, {1.0f, 1.0f}
};
/*
* Represents texcoords for the above for rendering 4 luma blocks arranged
* in a bW*(bH*4) texture. First luma block located at 0,0->bW,bH; second at
* 0,bH->bW,2bH; third at 0,2bH->bW,3bH; fourth at 0,3bH->bW,4bH.
*/
const struct VL_TEXCOORD2F vl_luma_texcoords[24] =
{
{0.0f, 0.0f}, {0.0f, 0.25f}, {1.0f, 0.0f},
{1.0f, 0.0f}, {0.0f, 0.25f}, {1.0f, 0.25f},
{0.0f, 0.25f}, {0.0f, 0.5f}, {1.0f, 0.25f},
{1.0f, 0.25f}, {0.0f, 0.5f}, {1.0f, 0.5f},
{0.0f, 0.5f}, {0.0f, 0.75f}, {1.0f, 0.5f},
{1.0f, 0.5f}, {0.0f, 0.75f}, {1.0f, 0.75f},
{0.0f, 0.75f}, {0.0f, 1.0f}, {1.0f, 0.75f},
{1.0f, 0.75f}, {0.0f, 1.0f}, {1.0f, 1.0f}
};
/*
* Represents texcoords for the above for rendering 1 chroma block.
* Straight forward 0,0->1,1 mapping so we can reuse the MB pos vectors.
*/
const struct VL_TEXCOORD2F *vl_chroma_420_texcoords = (const struct VL_TEXCOORD2F*)vl_mb_vertex_positions;
/*
* Represents texcoords for the above for rendering 2 chroma blocks arranged
* in a bW*(bH*2) texture. First chroma block located at 0,0->bW,bH; second at
* 0,bH->bW,2bH. We can render this with 0,0->1,1 mapping.
* Straight forward 0,0->1,1 mapping so we can reuse MB pos vectors.
*/
const struct VL_TEXCOORD2F *vl_chroma_422_texcoords = (const struct VL_TEXCOORD2F*)vl_mb_vertex_positions;
/*
* Represents texcoords for the above for rendering 4 chroma blocks.
* Same case as 4 luma blocks.
*/
const struct VL_TEXCOORD2F *vl_chroma_444_texcoords = vl_luma_texcoords;
/*
* Represents 2 triangles in a strip in normalized coords.
* Used to render the surface onto the frame buffer.
*/
const struct VL_VERTEX2F vl_surface_vertex_positions[4] =
{
{0.0f, 0.0f},
{0.0f, 1.0f},
{1.0f, 0.0f},
{1.0f, 1.0f}
};
/*
* Represents texcoords for the above. We can use the position values directly.
*/
const struct VL_TEXCOORD2F *vl_surface_texcoords = (const struct VL_TEXCOORD2F*)vl_surface_vertex_positions;
/*
* Used when rendering P and B macroblocks, multiplier is applied to the A channel,
* which is then added to the L channel, then the bias is subtracted from that to
* get back the differential. The differential is then added to the samples from the
* reference surface(s).
*/
const struct VL_MC_FS_CONSTS vl_mc_fs_consts =
{
{256.0f, 256.0f, 256.0f, 0.0f},
{256.0f / 255.0f, 256.0f / 255.0f, 256.0f / 255.0f, 0.0f},
{0.5f, 2.0f, 0.0f, 0.0f}
};
/*
* Identity color conversion constants, for debugging
*/
const struct VL_CSC_FS_CONSTS vl_csc_fs_consts_identity =
{
{
0.0f, 0.0f, 0.0f, 0.0f
},
{
1.0f, 0.0f, 0.0f, 0.0f,
0.0f, 1.0f, 0.0f, 0.0f,
0.0f, 0.0f, 1.0f, 0.0f,
0.0f, 0.0f, 0.0f, 1.0f
}
};
/*
* Converts ITU-R BT.601 YCbCr pixels to RGB pixels where:
* Y is in [16,235], Cb and Cr are in [16,240]
* R, G, and B are in [16,235]
*/
const struct VL_CSC_FS_CONSTS vl_csc_fs_consts_601 =
{
{
0.0f, 0.501960784f, 0.501960784f, 0.0f
},
{
1.0f, 0.0f, 1.371f, 0.0f,
1.0f, -0.336f, -0.698f, 0.0f,
1.0f, 1.732f, 0.0f, 0.0f,
0.0f, 0.0f, 0.0f, 1.0f
}
};
/*
* Converts ITU-R BT.601 YCbCr pixels to RGB pixels where:
* Y is in [16,235], Cb and Cr are in [16,240]
* R, G, and B are in [0,255]
*/
const struct VL_CSC_FS_CONSTS vl_csc_fs_consts_601_full =
{
{
0.062745098f, 0.501960784f, 0.501960784f, 0.0f
},
{
1.164f, 0.0f, 1.596f, 0.0f,
1.164f, -0.391f, -0.813f, 0.0f,
1.164f, 2.018f, 0.0f, 0.0f,
0.0f, 0.0f, 0.0f, 1.0f
}
};
/*
* Converts ITU-R BT.709 YCbCr pixels to RGB pixels where:
* Y is in [16,235], Cb and Cr are in [16,240]
* R, G, and B are in [16,235]
*/
const struct VL_CSC_FS_CONSTS vl_csc_fs_consts_709 =
{
{
0.0f, 0.501960784f, 0.501960784f, 0.0f
},
{
1.0f, 0.0f, 1.540f, 0.0f,
1.0f, -0.183f, -0.459f, 0.0f,
1.0f, 1.816f, 0.0f, 0.0f,
0.0f, 0.0f, 0.0f, 1.0f
}
};
/*
* Converts ITU-R BT.709 YCbCr pixels to RGB pixels where:
* Y is in [16,235], Cb and Cr are in [16,240]
* R, G, and B are in [0,255]
*/
const struct VL_CSC_FS_CONSTS vl_csc_fs_consts_709_full =
{
{
0.062745098f, 0.501960784f, 0.501960784f, 0.0f
},
{
1.164f, 0.0f, 1.793f, 0.0f,
1.164f, -0.213f, -0.534f, 0.0f,
1.164f, 2.115f, 0.0f, 0.0f,
0.0f, 0.0f, 0.0f, 1.0f
}
};
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