diff options
Diffstat (limited to 'libmpeg2/convert/rgb.c')
| -rw-r--r-- | libmpeg2/convert/rgb.c | 598 |
1 files changed, 598 insertions, 0 deletions
diff --git a/libmpeg2/convert/rgb.c b/libmpeg2/convert/rgb.c new file mode 100644 index 0000000..8863b0b --- /dev/null +++ b/libmpeg2/convert/rgb.c @@ -0,0 +1,598 @@ +/* + * rgb.c + * Copyright (C) 2000-2003 Michel Lespinasse <walken@zoy.org> + * Copyright (C) 1999-2000 Aaron Holtzman <aholtzma@ess.engr.uvic.ca> + * + * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +#include "config.h" +#include "attributes.h" + +#include <inttypes.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_slice * 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); \ + if (--i == id->base.field) { \ + dst_1 = (type *)(id->base.rgb_ptr + \ + id->base.rgb_slice * (v_offset + 1)); \ + py_1 = src[0] + id->base.y_stride_frame; \ + pu = src[1] + id->base.uv_stride_frame; \ + pv = src[2] + id->base.uv_stride_frame; \ + } else { \ + 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_slice = id->rgb_stride = id->rgb_stride_frame; + id->dither_stride = 32; + id->dither_offset = dither_temporal[picture->temporal_reference & 63]; + id->field = 0; + if ((picture->nb_fields == 1) || + (id->chroma420 && !(picture->flags & PIC_FLAG_PROGRESSIVE_FRAME))) { + uv_stride <<= 1; + id->y_stride <<= 1; + id->rgb_stride <<= 1; + id->dither_stride <<= 1; + id->dither_offset += 16; + if (picture->nb_fields == 1) { + id->rgb_slice <<= 1; + if (!(picture->flags & PIC_FLAG_TOP_FIELD_FIRST)) { + id->rgb_ptr += id->rgb_stride_frame; + id->dither_offset += 32; + } + } else + id->field = 8 >> id->convert420; + } + 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; +} |