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4349 | Serge | 1 | /* |
2 | * Copyright (C) 2007 Marc Hoffman |
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3 | * |
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4 | * Blackfin video color space converter operations |
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5 | * convert I420 YV12 to RGB in various formats |
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6 | * |
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7 | * This file is part of FFmpeg. |
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8 | * |
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9 | * FFmpeg is free software; you can redistribute it and/or |
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10 | * modify it under the terms of the GNU Lesser General Public |
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11 | * License as published by the Free Software Foundation; either |
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12 | * version 2.1 of the License, or (at your option) any later version. |
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13 | * |
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14 | * FFmpeg is distributed in the hope that it will be useful, |
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15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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17 | * Lesser General Public License for more details. |
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18 | * |
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19 | * You should have received a copy of the GNU Lesser General Public |
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20 | * License along with FFmpeg; if not, write to the Free Software |
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21 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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22 | */ |
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23 | |||
24 | #include "libavutil/pixdesc.h" |
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25 | #include |
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26 | |||
27 | #include "config.h" |
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28 | #include "libavutil/attributes.h" |
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29 | #include "libswscale/swscale_internal.h" |
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30 | |||
31 | #if defined(__FDPIC__) && CONFIG_SRAM |
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32 | #define L1CODE __attribute__((l1_text)) |
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33 | #else |
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34 | #define L1CODE |
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35 | #endif |
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36 | |||
37 | void ff_bfin_yuv2rgb555_line(const uint8_t *Y, const uint8_t *U, |
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38 | const uint8_t *V, uint8_t *out, |
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39 | int w, uint32_t *coeffs) L1CODE; |
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40 | |||
41 | void ff_bfin_yuv2rgb565_line(const uint8_t *Y, const uint8_t *U, |
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42 | const uint8_t *V, uint8_t *out, |
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43 | int w, uint32_t *coeffs) L1CODE; |
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44 | |||
45 | void ff_bfin_yuv2rgb24_line(const uint8_t *Y, const uint8_t *U, |
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46 | const uint8_t *V, uint8_t *out, |
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47 | int w, uint32_t *coeffs) L1CODE; |
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48 | |||
49 | typedef void (*ltransform)(const uint8_t *Y, const uint8_t *U, const uint8_t *V, |
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50 | uint8_t *out, int w, uint32_t *coeffs); |
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51 | |||
52 | static void bfin_prepare_coefficients(SwsContext *c, int rgb, int masks) |
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53 | { |
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54 | int oy; |
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55 | oy = c->yOffset & 0xffff; |
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56 | oy = oy >> 3; // keep everything U8.0 for offset calculation |
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57 | |||
58 | c->oc = 128 * 0x01010101U; |
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59 | c->oy = oy * 0x01010101U; |
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60 | |||
61 | /* copy 64bit vector coeffs down to 32bit vector coeffs */ |
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62 | c->cy = c->yCoeff; |
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63 | c->zero = 0; |
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64 | |||
65 | if (rgb) { |
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66 | c->crv = c->vrCoeff; |
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67 | c->cbu = c->ubCoeff; |
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68 | c->cgu = c->ugCoeff; |
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69 | c->cgv = c->vgCoeff; |
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70 | } else { |
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71 | c->crv = c->ubCoeff; |
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72 | c->cbu = c->vrCoeff; |
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73 | c->cgu = c->vgCoeff; |
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74 | c->cgv = c->ugCoeff; |
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75 | } |
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76 | |||
77 | if (masks == 555) { |
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78 | c->rmask = 0x001f * 0x00010001U; |
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79 | c->gmask = 0x03e0 * 0x00010001U; |
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80 | c->bmask = 0x7c00 * 0x00010001U; |
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81 | } else if (masks == 565) { |
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82 | c->rmask = 0x001f * 0x00010001U; |
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83 | c->gmask = 0x07e0 * 0x00010001U; |
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84 | c->bmask = 0xf800 * 0x00010001U; |
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85 | } |
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86 | } |
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87 | |||
88 | static int core_yuv420_rgb(SwsContext *c, const uint8_t **in, int *instrides, |
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89 | int srcSliceY, int srcSliceH, uint8_t **oplanes, |
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90 | int *outstrides, ltransform lcscf, |
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91 | int rgb, int masks) |
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92 | { |
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93 | const uint8_t *py, *pu, *pv; |
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94 | uint8_t *op; |
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95 | int w = instrides[0]; |
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96 | int h2 = srcSliceH >> 1; |
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97 | int i; |
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98 | |||
99 | bfin_prepare_coefficients(c, rgb, masks); |
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100 | |||
101 | py = in[0]; |
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102 | pu = in[1 + (1 ^ rgb)]; |
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103 | pv = in[1 + (0 ^ rgb)]; |
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104 | |||
105 | op = oplanes[0] + srcSliceY * outstrides[0]; |
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106 | |||
107 | for (i = 0; i < h2; i++) { |
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108 | lcscf(py, pu, pv, op, w, &c->oy); |
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109 | |||
110 | py += instrides[0]; |
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111 | op += outstrides[0]; |
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112 | |||
113 | lcscf(py, pu, pv, op, w, &c->oy); |
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114 | |||
115 | py += instrides[0]; |
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116 | pu += instrides[1]; |
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117 | pv += instrides[2]; |
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118 | op += outstrides[0]; |
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119 | } |
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120 | |||
121 | return srcSliceH; |
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122 | } |
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123 | |||
124 | static int bfin_yuv420_rgb555(SwsContext *c, const uint8_t **in, int *instrides, |
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125 | int srcSliceY, int srcSliceH, |
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126 | uint8_t **oplanes, int *outstrides) |
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127 | { |
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128 | return core_yuv420_rgb(c, in, instrides, srcSliceY, srcSliceH, oplanes, |
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129 | outstrides, ff_bfin_yuv2rgb555_line, 1, 555); |
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130 | } |
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131 | |||
132 | static int bfin_yuv420_bgr555(SwsContext *c, const uint8_t **in, int *instrides, |
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133 | int srcSliceY, int srcSliceH, |
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134 | uint8_t **oplanes, int *outstrides) |
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135 | { |
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136 | return core_yuv420_rgb(c, in, instrides, srcSliceY, srcSliceH, oplanes, |
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137 | outstrides, ff_bfin_yuv2rgb555_line, 0, 555); |
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138 | } |
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139 | |||
140 | static int bfin_yuv420_rgb24(SwsContext *c, const uint8_t **in, int *instrides, |
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141 | int srcSliceY, int srcSliceH, |
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142 | uint8_t **oplanes, int *outstrides) |
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143 | { |
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144 | return core_yuv420_rgb(c, in, instrides, srcSliceY, srcSliceH, oplanes, |
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145 | outstrides, ff_bfin_yuv2rgb24_line, 1, 888); |
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146 | } |
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147 | |||
148 | static int bfin_yuv420_bgr24(SwsContext *c, const uint8_t **in, int *instrides, |
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149 | int srcSliceY, int srcSliceH, |
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150 | uint8_t **oplanes, int *outstrides) |
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151 | { |
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152 | return core_yuv420_rgb(c, in, instrides, srcSliceY, srcSliceH, oplanes, |
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153 | outstrides, ff_bfin_yuv2rgb24_line, 0, 888); |
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154 | } |
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155 | |||
156 | static int bfin_yuv420_rgb565(SwsContext *c, const uint8_t **in, int *instrides, |
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157 | int srcSliceY, int srcSliceH, |
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158 | uint8_t **oplanes, int *outstrides) |
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159 | { |
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160 | return core_yuv420_rgb(c, in, instrides, srcSliceY, srcSliceH, oplanes, |
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161 | outstrides, ff_bfin_yuv2rgb565_line, 1, 565); |
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162 | } |
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163 | |||
164 | static int bfin_yuv420_bgr565(SwsContext *c, const uint8_t **in, int *instrides, |
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165 | int srcSliceY, int srcSliceH, |
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166 | uint8_t **oplanes, int *outstrides) |
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167 | { |
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168 | return core_yuv420_rgb(c, in, instrides, srcSliceY, srcSliceH, oplanes, |
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169 | outstrides, ff_bfin_yuv2rgb565_line, 0, 565); |
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170 | } |
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171 | |||
172 | av_cold SwsFunc ff_yuv2rgb_init_bfin(SwsContext *c) |
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173 | { |
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174 | SwsFunc f; |
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175 | |||
176 | switch (c->dstFormat) { |
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177 | case AV_PIX_FMT_RGB555: |
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178 | f = bfin_yuv420_rgb555; |
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179 | break; |
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180 | case AV_PIX_FMT_BGR555: |
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181 | f = bfin_yuv420_bgr555; |
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182 | break; |
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183 | case AV_PIX_FMT_RGB565: |
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184 | f = bfin_yuv420_rgb565; |
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185 | break; |
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186 | case AV_PIX_FMT_BGR565: |
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187 | f = bfin_yuv420_bgr565; |
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188 | break; |
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189 | case AV_PIX_FMT_RGB24: |
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190 | f = bfin_yuv420_rgb24; |
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191 | break; |
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192 | case AV_PIX_FMT_BGR24: |
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193 | f = bfin_yuv420_bgr24; |
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194 | break; |
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195 | default: |
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196 | return 0; |
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197 | } |
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198 | |||
199 | av_log(c, AV_LOG_INFO, "BlackFin accelerated color space converter %s\n", |
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200 | av_get_pix_fmt_name(c->dstFormat)); |
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201 | |||
202 | return f; |
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203 | }> |