void (*h264_luma_dc_dequant_idct)(int16_t *output,
int16_t *input /*align 16*/, int qmul);
void (*h264_chroma_dc_dequant_idct)(int16_t *block, int qmul);
void (*h264_luma_dc_dequant_idct)(int16_t *output,
int16_t *input /*align 16*/, int qmul);
void (*h264_chroma_dc_dequant_idct)(int16_t *block, int qmul);