46     rgb_context *ctx);
62     rgb_context ctx;  in color_convert_common()  local
64     ctx.buffer = buffer;  in color_convert_common()
65     ctx.size = size; /* debug */  in color_convert_common()
66     ctx.width = width;  in color_convert_common()
67     ctx.height = height;  in color_convert_common()
68     ctx.rotate = rotate;  in color_convert_common()
74                 ctx.i = i;  in color_convert_common()
75                 ctx.j = j;  in color_convert_common()
76                 cb(nB, nB, nB, &ctx);  in color_convert_common()
111                 ctx.i = i;  in color_convert_common()
112                 ctx.j = j;  in color_convert_common()
113                 cb(nR, nG, nB, &ctx);  in color_convert_common()
123     rgb_context *ctx)  in rgb16_cb()  argument
125     unsigned short *rgb16 = (unsigned short *)ctx->buffer;  in rgb16_cb()
126     *(rgb16 + ctx->i * ctx->width + ctx->j) = b | (g << 5) | (r << 11);  in rgb16_cb()
133     rgb_context *ctx,  in common_rgb_cb()  argument
136     unsigned char *out = ctx->buffer;  in common_rgb_cb()
140     switch(ctx->rotate) {  in common_rgb_cb()
142         offset = ctx->i * ctx->width + ctx->j;  in common_rgb_cb()
145         offset = ctx->height * (ctx->j + 1) - ctx->i;  in common_rgb_cb()
148         offset = (ctx->height - 1 - ctx->i) * ctx->width + ctx->j;  in common_rgb_cb()
151         offset = (ctx->width - 1 - ctx->j) * ctx->height + ctx->i;  in common_rgb_cb()
154         FAILIF(1, "Unexpected roation value %d!\n", ctx->rotate);  in common_rgb_cb()
159     FAILIF(offset < 0, "point (%d, %d) generates a negative offset.\n", ctx->i, ctx->j);  in common_rgb_cb()
160 …FAILIF(offset + bpp > ctx->size, "point (%d, %d) at offset %d exceeds the size %d of the buffer.\n…  in common_rgb_cb()
161            ctx->i, ctx->j,  in common_rgb_cb()
163            ctx->size);  in common_rgb_cb()
177     rgb_context *ctx)  in rgb24_cb()  argument
179     return common_rgb_cb(r,g,b,ctx,0);  in rgb24_cb()
186     rgb_context *ctx)  in argb_cb()  argument
188     return common_rgb_cb(r,g,b,ctx,1);  in argb_cb()