/* * rgb.c * Copyright (C) 2000-2003 Michel Lespinasse * Copyright (C) 1999-2000 Aaron Holtzman * * This file is part of mpeg2dec, a free MPEG-2 video stream decoder. * See http://libmpeg2.sourceforge.net/ for updates. * * mpeg2dec is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * mpeg2dec is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #include "config.h" #include "k9common.h" #include "attributes.h" #include "mpeg2.h" #include "mpeg2convert.h" #include "convert_internal.h" static int matrix_coefficients = 6; static const int Inverse_Table_6_9[8][4] = { {117504, 138453, 13954, 34903}, /* no sequence_display_extension */ {117504, 138453, 13954, 34903}, /* ITU-R Rec. 709 (1990) */ {104597, 132201, 25675, 53279}, /* unspecified */ {104597, 132201, 25675, 53279}, /* reserved */ {104448, 132798, 24759, 53109}, /* FCC */ {104597, 132201, 25675, 53279}, /* ITU-R Rec. 624-4 System B, G */ {104597, 132201, 25675, 53279}, /* SMPTE 170M */ {117579, 136230, 16907, 35559} /* SMPTE 240M (1987) */ }; static const uint8_t dither[] ATTR_ALIGN(32) = { 0, 0, 23, 54, 5, 13, 29, 68, 1, 3, 24, 58, 7, 17, 30, 71, 0, 0, 23, 54, 5, 13, 29, 68, 1, 3, 24, 58, 7, 17, 30, 71, 0, 0, 23, 54, 5, 13, 29, 68, 1, 3, 24, 58, 7, 17, 30, 71, 0, 0, 23, 54, 5, 13, 29, 68, 1, 3, 24, 58, 7, 17, 30, 71, 15, 36, 7, 18, 21, 50, 13, 31, 17, 39, 9, 21, 22, 53, 15, 35, 15, 36, 7, 18, 21, 50, 13, 31, 17, 39, 9, 21, 22, 53, 15, 35, 15, 36, 7, 18, 21, 50, 13, 31, 17, 39, 9, 21, 22, 53, 15, 35, 15, 36, 7, 18, 21, 50, 13, 31, 17, 39, 9, 21, 22, 53, 15, 35, 3, 9, 27, 63, 1, 4, 25, 59, 5, 12, 28, 67, 3, 7, 26, 62, 3, 9, 27, 63, 1, 4, 25, 59, 5, 12, 28, 67, 3, 7, 26, 62, 3, 9, 27, 63, 1, 4, 25, 59, 5, 12, 28, 67, 3, 7, 26, 62, 3, 9, 27, 63, 1, 4, 25, 59, 5, 12, 28, 67, 3, 7, 26, 62, 19, 45, 11, 27, 17, 41, 9, 22, 21, 49, 13, 30, 19, 44, 11, 26, 19, 45, 11, 27, 17, 41, 9, 22, 21, 49, 13, 30, 19, 44, 11, 26, 19, 45, 11, 27, 17, 41, 9, 22, 21, 49, 13, 30, 19, 44, 11, 26, 19, 45, 11, 27, 17, 41, 9, 22, 21, 49, 13, 30, 19, 44, 11, 26, 0, 2, 24, 57, 6, 15, 30, 70, 0, 1, 23, 55, 6, 14, 29, 69, 0, 2, 24, 57, 6, 15, 30, 70, 0, 1, 23, 55, 6, 14, 29, 69, 0, 2, 24, 57, 6, 15, 30, 70, 0, 1, 23, 55, 6, 14, 29, 69, 0, 2, 24, 57, 6, 15, 30, 70, 0, 1, 23, 55, 6, 14, 29, 69, 16, 38, 8, 20, 22, 52, 14, 34, 16, 37, 8, 19, 21, 51, 14, 33, 16, 38, 8, 20, 22, 52, 14, 34, 16, 37, 8, 19, 21, 51, 14, 33, 16, 38, 8, 20, 22, 52, 14, 34, 16, 37, 8, 19, 21, 51, 14, 33, 16, 38, 8, 20, 22, 52, 14, 34, 16, 37, 8, 19, 21, 51, 14, 33, 4, 11, 28, 66, 2, 6, 26, 61, 4, 10, 27, 65, 2, 5, 25, 60, 4, 11, 28, 66, 2, 6, 26, 61, 4, 10, 27, 65, 2, 5, 25, 60, 4, 11, 28, 66, 2, 6, 26, 61, 4, 10, 27, 65, 2, 5, 25, 60, 4, 11, 28, 66, 2, 6, 26, 61, 4, 10, 27, 65, 2, 5, 25, 60, 20, 47, 12, 29, 18, 43, 10, 25, 20, 46, 12, 28, 18, 42, 10, 23, 20, 47, 12, 29, 18, 43, 10, 25, 20, 46, 12, 28, 18, 42, 10, 23, 20, 47, 12, 29, 18, 43, 10, 25, 20, 46, 12, 28, 18, 42, 10, 23, 20, 47, 12, 29, 18, 43, 10, 25, 20, 46, 12, 28, 18, 42, 10, 23, 0, 0, 23, 54, 5, 13, 29, 68, 1, 3, 24, 58, 7, 17, 30, 71, 0, 0, 23, 54, 5, 13, 29, 68, 1, 3, 24, 58, 7, 17, 30, 71, 0, 0, 23, 54, 5, 13, 29, 68, 1, 3, 24, 58, 7, 17, 30, 71, 0, 0, 23, 54, 5, 13, 29, 68, 1, 3, 24, 58, 7, 17, 30, 71, 15, 36, 7, 18, 21, 50, 13, 31, 17, 39, 9, 21, 22, 53, 15, 35, 15, 36, 7, 18, 21, 50, 13, 31, 17, 39, 9, 21, 22, 53, 15, 35 }; static const uint8_t dither_temporal[64] = { 0x00, 0x20, 0x21, 0x01, 0x40, 0x60, 0x61, 0x41, 0x42, 0x62, 0x63, 0x43, 0x02, 0x22, 0x23, 0x03, 0x80, 0xa0, 0xa1, 0x81, 0xc0, 0xe0, 0xe1, 0xc1, 0xc2, 0xe2, 0xe3, 0xc3, 0x82, 0xa2, 0xa3, 0x83, 0x84, 0xa4, 0xa5, 0x85, 0xc4, 0xe4, 0xe5, 0xc5, 0xc6, 0xe6, 0xe7, 0xc7, 0x86, 0xa6, 0xa7, 0x87, 0x04, 0x24, 0x25, 0x05, 0x44, 0x64, 0x65, 0x45, 0x46, 0x66, 0x67, 0x47, 0x06, 0x26, 0x27, 0x07 }; typedef struct { convert_rgb_t base; void * table_rV[256]; void * table_gU[256]; int table_gV[256]; void * table_bU[256]; } convert_rgb_c_t; #define RGB(type,i) \ U = pu[i]; \ V = pv[i]; \ r = (type *) id->table_rV[V]; \ g = (type *) (((uint8_t *)id->table_gU[U]) + id->table_gV[V]); \ b = (type *) id->table_bU[U]; #define DST(py,dst,i,j) \ Y = py[i]; \ dst[i] = r[Y] + g[Y] + b[Y]; #define DSTRGB(py,dst,i,j) \ Y = py[i]; \ dst[3*i] = r[Y]; dst[3*i+1] = g[Y]; dst[3*i+2] = b[Y]; #define DSTBGR(py,dst,i,j) \ Y = py[i]; \ dst[3*i] = b[Y]; dst[3*i+1] = g[Y]; dst[3*i+2] = r[Y]; #define DSTDITHER(py,dst,i,j) \ Y = py[i]; \ dst[i] = r[Y+pd[2*i+96*j]] + g[Y-pd[2*i+96*j]] + b[Y+pd[2*i+1+96*j]]; #define DO(x) x #define SKIP(x) #define DECLARE_420(func,type,num,DST,DITHER) \ static void func (void * _id, uint8_t * const * src, \ unsigned int v_offset) \ { \ const convert_rgb_c_t * const id = (convert_rgb_c_t *) _id; \ type * dst_1; \ const uint8_t * py_1, * pu, * pv; \ int i; \ DITHER(uint8_t dithpos = id->base.dither_offset;) \ \ dst_1 = (type *)(id->base.rgb_ptr + id->base.rgb_stride * v_offset);\ py_1 = src[0]; pu = src[1]; pv = src[2]; \ \ i = 8; \ do { \ const uint8_t * py_2; \ int j, U, V, Y; \ const type * r, * g, * b; \ type * dst_2; \ DITHER(const uint8_t * const pd = dither + 2 * dithpos;) \ \ dst_2 = (type *)((char *)dst_1 + id->base.rgb_stride); \ py_2 = py_1 + id->base.y_stride; \ j = id->base.width; \ do { \ RGB (type, 0) \ DST (py_1, dst_1, 0, 0) \ DST (py_1, dst_1, 1, 0) \ DST (py_2, dst_2, 0, 1) \ DST (py_2, dst_2, 1, 1) \ \ RGB (type, 1) \ DST (py_2, dst_2, 2, 1) \ DST (py_2, dst_2, 3, 1) \ DST (py_1, dst_1, 2, 0) \ DST (py_1, dst_1, 3, 0) \ \ RGB (type, 2) \ DST (py_1, dst_1, 4, 0) \ DST (py_1, dst_1, 5, 0) \ DST (py_2, dst_2, 4, 1) \ DST (py_2, dst_2, 5, 1) \ \ RGB (type, 3) \ DST (py_2, dst_2, 6, 1) \ DST (py_2, dst_2, 7, 1) \ DST (py_1, dst_1, 6, 0) \ DST (py_1, dst_1, 7, 0) \ \ pu += 4; \ pv += 4; \ py_1 += 8; \ py_2 += 8; \ dst_1 += 8 * num; \ dst_2 += 8 * num; \ } while (--j); \ py_1 += id->base.y_increm; \ pu += id->base.uv_increm; \ pv += id->base.uv_increm; \ dst_1 = (type *)((char *)dst_1 + id->base.rgb_increm); \ DITHER(dithpos += id->base.dither_stride;) \ } while (--i); \ } DECLARE_420 (rgb_c_32_420, uint32_t, 1, DST, SKIP) DECLARE_420 (rgb_c_24_rgb_420, uint8_t, 3, DSTRGB, SKIP) DECLARE_420 (rgb_c_24_bgr_420, uint8_t, 3, DSTBGR, SKIP) DECLARE_420 (rgb_c_16_420, uint16_t, 1, DST, SKIP) DECLARE_420 (rgb_c_8_420, uint8_t, 1, DSTDITHER, DO) #define DECLARE_422(func,type,num,DST,DITHER) \ static void func (void * _id, uint8_t * const * src, \ unsigned int v_offset) \ { \ const convert_rgb_c_t * const id = (convert_rgb_c_t *) _id; \ type * dst; \ const uint8_t * py, * pu, * pv; \ int i; \ DITHER(uint8_t dithpos = id->base.dither_offset;) \ \ dst = (type *)(id->base.rgb_ptr + id->base.rgb_stride * v_offset); \ py = src[0]; pu = src[1]; pv = src[2]; \ \ i = 16; \ do { \ int j, U, V, Y; \ const type * r, * g, * b; \ DITHER(const uint8_t * const pd = dither + 2 * dithpos;) \ \ j = id->base.width; \ do { \ RGB (type, 0) \ DST (py, dst, 0, 0) \ DST (py, dst, 1, 0) \ \ RGB (type, 1) \ DST (py, dst, 2, 0) \ DST (py, dst, 3, 0) \ \ RGB (type, 2) \ DST (py, dst, 4, 0) \ DST (py, dst, 5, 0) \ \ RGB (type, 3) \ DST (py, dst, 6, 0) \ DST (py, dst, 7, 0) \ \ pu += 4; \ pv += 4; \ py += 8; \ dst += 8 * num; \ } while (--j); \ py += id->base.y_increm; \ pu += id->base.uv_increm; \ pv += id->base.uv_increm; \ dst = (type *)((char *)dst + id->base.rgb_increm); \ DITHER(dithpos += id->base.dither_stride;) \ } while (--i); \ } DECLARE_422 (rgb_c_32_422, uint32_t, 1, DST, SKIP) DECLARE_422 (rgb_c_24_rgb_422, uint8_t, 3, DSTRGB, SKIP) DECLARE_422 (rgb_c_24_bgr_422, uint8_t, 3, DSTBGR, SKIP) DECLARE_422 (rgb_c_16_422, uint16_t, 1, DST, SKIP) DECLARE_422 (rgb_c_8_422, uint8_t, 1, DSTDITHER, DO) #define DECLARE_444(func,type,num,DST,DITHER) \ static void func (void * _id, uint8_t * const * src, \ unsigned int v_offset) \ { \ const convert_rgb_c_t * const id = (convert_rgb_c_t *) _id; \ type * dst; \ const uint8_t * py, * pu, * pv; \ int i; \ DITHER(uint8_t dithpos = id->base.dither_offset;) \ \ dst = (type *)(id->base.rgb_ptr + id->base.rgb_stride * v_offset); \ py = src[0]; pu = src[1]; pv = src[2]; \ \ i = 16; \ do { \ int j, U, V, Y; \ const type * r, * g, * b; \ DITHER(const uint8_t * const pd = dither + 2 * dithpos;) \ \ j = id->base.width; \ do { \ RGB (type, 0) \ DST (py, dst, 0, 0) \ RGB (type, 1) \ DST (py, dst, 1, 0) \ RGB (type, 2) \ DST (py, dst, 2, 0) \ RGB (type, 3) \ DST (py, dst, 3, 0) \ RGB (type, 4) \ DST (py, dst, 4, 0) \ RGB (type, 5) \ DST (py, dst, 5, 0) \ RGB (type, 6) \ DST (py, dst, 6, 0) \ RGB (type, 7) \ DST (py, dst, 7, 0) \ \ pu += 8; \ pv += 8; \ py += 8; \ dst += 8 * num; \ } while (--j); \ py += id->base.y_increm; \ pu += id->base.y_increm; \ pv += id->base.y_increm; \ dst = (type *)((char *)dst + id->base.rgb_increm); \ DITHER(dithpos += id->base.dither_stride;) \ } while (--i); \ } DECLARE_444 (rgb_c_32_444, uint32_t, 1, DST, SKIP) DECLARE_444 (rgb_c_24_rgb_444, uint8_t, 3, DSTRGB, SKIP) DECLARE_444 (rgb_c_24_bgr_444, uint8_t, 3, DSTBGR, SKIP) DECLARE_444 (rgb_c_16_444, uint16_t, 1, DST, SKIP) DECLARE_444 (rgb_c_8_444, uint8_t, 1, DSTDITHER, DO) static void rgb_start (void * _id, const mpeg2_fbuf_t * fbuf, const mpeg2_picture_t * picture, const mpeg2_gop_t * gop) { convert_rgb_t * id = (convert_rgb_t *) _id; int uv_stride = id->uv_stride_frame; id->y_stride = id->y_stride_frame; id->rgb_ptr = fbuf->buf[0]; id->rgb_stride = id->rgb_stride_frame; id->dither_stride = 32; id->dither_offset = dither_temporal[picture->temporal_reference & 63]; if (picture->nb_fields == 1) { uv_stride <<= 1; id->y_stride <<= 1; id->rgb_stride <<= 1; id->dither_stride <<= 1; id->dither_offset += 16; if (!(picture->flags & PIC_FLAG_TOP_FIELD_FIRST)) { id->rgb_ptr += id->rgb_stride_frame; id->dither_offset += 32; } } id->y_increm = (id->y_stride << id->convert420) - id->y_stride_frame; id->uv_increm = uv_stride - id->uv_stride_frame; id->rgb_increm = (id->rgb_stride << id->convert420) - id->rgb_stride_min; id->dither_stride <<= id->convert420; } static inline int div_round (int dividend, int divisor) { if (dividend > 0) return (dividend + (divisor>>1)) / divisor; else return -((-dividend + (divisor>>1)) / divisor); } static unsigned int rgb_c_init (convert_rgb_c_t * id, mpeg2convert_rgb_order_t order, unsigned int bpp) { int i; uint8_t table_Y[1024]; uint32_t * table_32 = 0; uint16_t * table_16 = 0; uint8_t * table_8 = 0; uint8_t * table_332 = 0; int entry_size = 0; void * table_r = 0; void * table_g = 0; void * table_b = 0; int crv = Inverse_Table_6_9[matrix_coefficients][0]; int cbu = Inverse_Table_6_9[matrix_coefficients][1]; int cgu = -Inverse_Table_6_9[matrix_coefficients][2]; int cgv = -Inverse_Table_6_9[matrix_coefficients][3]; for (i = 0; i < 1024; i++) { int j; j = (76309 * (i - 384 - 16) + 32768) >> 16; table_Y[i] = (j < 0) ? 0 : ((j > 255) ? 255 : j); } switch (bpp) { case 32: if (!id) return (197 + 2*682 + 256 + 132) * sizeof (uint32_t); table_32 = (uint32_t *) (id + 1); entry_size = sizeof (uint32_t); table_r = table_32 + 197; table_b = table_32 + 197 + 685; table_g = table_32 + 197 + 2*682; for (i = -197; i < 256+197; i++) ((uint32_t *) table_r)[i] = table_Y[i+384] << ((order == MPEG2CONVERT_RGB) ? 16 : 0); for (i = -132; i < 256+132; i++) ((uint32_t *) table_g)[i] = table_Y[i+384] << 8; for (i = -232; i < 256+232; i++) ((uint32_t *) table_b)[i] = table_Y[i+384] << ((order == MPEG2CONVERT_RGB) ? 0 : 16); break; case 24: if (!id) return (256 + 2*232) * sizeof (uint8_t); table_8 = (uint8_t *) (id + 1); entry_size = sizeof (uint8_t); table_r = table_g = table_b = table_8 + 232; for (i = -232; i < 256+232; i++) ((uint8_t * )table_b)[i] = table_Y[i+384]; break; case 15: case 16: if (!id) return (197 + 2*682 + 256 + 132) * sizeof (uint16_t); table_16 = (uint16_t *) (id + 1); entry_size = sizeof (uint16_t); table_r = table_16 + 197; table_b = table_16 + 197 + 685; table_g = table_16 + 197 + 2*682; for (i = -197; i < 256+197; i++) { int j = table_Y[i+384] >> 3; if (order == MPEG2CONVERT_RGB) j <<= ((bpp==16) ? 11 : 10); ((uint16_t *)table_r)[i] = j; } for (i = -132; i < 256+132; i++) { int j = table_Y[i+384] >> ((bpp==16) ? 2 : 3); ((uint16_t *)table_g)[i] = j << 5; } for (i = -232; i < 256+232; i++) { int j = table_Y[i+384] >> 3; if (order == MPEG2CONVERT_BGR) j <<= ((bpp==16) ? 11 : 10); ((uint16_t *)table_b)[i] = j; } break; case 8: if (!id) return (197 + 2*682 + 256 + 232 + 71) * sizeof (uint8_t); table_332 = (uint8_t *) (id + 1); entry_size = sizeof (uint8_t); table_r = table_332 + 197; table_g = table_332 + 197 + 682 + 30; table_b = table_332 + 197 + 2*682; for (i = -197; i < 256+197+30; i++) ((uint8_t *)table_r)[i] = ((table_Y[i+384] * 7 / 255) << (order == MPEG2CONVERT_RGB ? 5 : 0)); for (i = -132; i < 256+132+30; i++) ((uint8_t *)table_g)[i-30] = ((table_Y[i+384] * 7 / 255) << (order == MPEG2CONVERT_RGB ? 2 : 3)); for (i = -232; i < 256+232+71; i++) ((uint8_t *)table_b)[i] = ((table_Y[i+384] / 85) << (order == MPEG2CONVERT_RGB ? 0 : 6)); break; } for (i = 0; i < 256; i++) { id->table_rV[i] = (((uint8_t *)table_r) + entry_size * div_round (crv * (i-128), 76309)); id->table_gU[i] = (((uint8_t *)table_g) + entry_size * div_round (cgu * (i-128), 76309)); id->table_gV[i] = entry_size * div_round (cgv * (i-128), 76309); id->table_bU[i] = (((uint8_t *)table_b) + entry_size * div_round (cbu * (i-128), 76309)); } return 0; } static int rgb_internal (mpeg2convert_rgb_order_t order, unsigned int bpp, int stage, void * _id, const mpeg2_sequence_t * seq, int stride, uint32_t accel, void * arg, mpeg2_convert_init_t * result) { convert_rgb_t * id = (convert_rgb_t *) _id; mpeg2convert_copy_t * copy = (mpeg2convert_copy_t *) 0; unsigned int id_size = sizeof (convert_rgb_t); int chroma420 = (seq->chroma_height < seq->height); int convert420 = 0; int rgb_stride_min = ((bpp + 7) >> 3) * seq->width; #ifdef ARCH_X86 if (!copy && (accel & MPEG2_ACCEL_X86_MMXEXT)) { convert420 = 0; copy = mpeg2convert_rgb_mmxext (order, bpp, seq); } if (!copy && (accel & MPEG2_ACCEL_X86_MMX)) { convert420 = 0; copy = mpeg2convert_rgb_mmx (order, bpp, seq); } #endif #ifdef ARCH_SPARC if (!copy && (accel & MPEG2_ACCEL_SPARC_VIS)) { convert420 = chroma420; copy = mpeg2convert_rgb_vis (order, bpp, seq); } #endif if (!copy) { int src, dest; static void (* rgb_c[3][5]) (void *, uint8_t * const *, unsigned int) = {{rgb_c_24_bgr_420, rgb_c_8_420, rgb_c_16_420, rgb_c_24_rgb_420, rgb_c_32_420}, {rgb_c_24_bgr_422, rgb_c_8_422, rgb_c_16_422, rgb_c_24_rgb_422, rgb_c_32_422}, {rgb_c_24_bgr_444, rgb_c_8_444, rgb_c_16_444, rgb_c_24_rgb_444, rgb_c_32_444}}; convert420 = chroma420; id_size = (sizeof (convert_rgb_c_t) + rgb_c_init ((convert_rgb_c_t *) id, order, bpp)); src = ((seq->chroma_width == seq->width) + (seq->chroma_height == seq->height)); dest = ((bpp == 24 && order == MPEG2CONVERT_BGR) ? 0 : (bpp + 7) >> 3); copy = rgb_c[src][dest]; } result->id_size = id_size; if (stride < rgb_stride_min) stride = rgb_stride_min; if (stage == MPEG2_CONVERT_STRIDE) return stride; else if (stage == MPEG2_CONVERT_START) { id->width = seq->width >> 3; id->y_stride_frame = seq->width; id->uv_stride_frame = seq->chroma_width; id->rgb_stride_frame = stride; id->rgb_stride_min = rgb_stride_min; id->chroma420 = chroma420; id->convert420 = convert420; result->buf_size[0] = stride * seq->height; result->buf_size[1] = result->buf_size[2] = 0; result->start = rgb_start; result->copy = copy; } return 0; } #define DECLARE(func,order,bpp) \ int func (int stage, void * id, \ const mpeg2_sequence_t * sequence, int stride, \ uint32_t accel, void * arg, mpeg2_convert_init_t * result) \ { \ return rgb_internal (order, bpp, stage, id, sequence, stride, \ accel, arg, result); \ } DECLARE (mpeg2convert_rgb32, MPEG2CONVERT_RGB, 32) DECLARE (mpeg2convert_rgb24, MPEG2CONVERT_RGB, 24) DECLARE (mpeg2convert_rgb16, MPEG2CONVERT_RGB, 16) DECLARE (mpeg2convert_rgb15, MPEG2CONVERT_RGB, 15) DECLARE (mpeg2convert_rgb8, MPEG2CONVERT_RGB, 8) DECLARE (mpeg2convert_bgr32, MPEG2CONVERT_BGR, 32) DECLARE (mpeg2convert_bgr24, MPEG2CONVERT_BGR, 24) DECLARE (mpeg2convert_bgr16, MPEG2CONVERT_BGR, 16) DECLARE (mpeg2convert_bgr15, MPEG2CONVERT_BGR, 15) DECLARE (mpeg2convert_bgr8, MPEG2CONVERT_BGR, 8) mpeg2_convert_t * mpeg2convert_rgb (mpeg2convert_rgb_order_t order, unsigned int bpp) { static mpeg2_convert_t * table[5][2] = {{mpeg2convert_rgb15, mpeg2convert_bgr15}, {mpeg2convert_rgb8, mpeg2convert_bgr8}, {mpeg2convert_rgb16, mpeg2convert_bgr16}, {mpeg2convert_rgb24, mpeg2convert_bgr24}, {mpeg2convert_rgb32, mpeg2convert_bgr32}}; if (order == MPEG2CONVERT_RGB || order == MPEG2CONVERT_BGR) { if (bpp == 15) return table[0][order == MPEG2CONVERT_BGR]; else if (bpp >= 8 && bpp <= 32 && (bpp & 7) == 0) return table[bpp >> 3][order == MPEG2CONVERT_BGR]; } return (mpeg2_convert_t *) 0; }