--- /dev/null
+/*
+ * Intel XScale PXA255/270 LCDC emulation.
+ *
+ * Copyright (c) 2006 Openedhand Ltd.
+ * Written by Andrzej Zaborowski <balrog@zabor.org>
+ *
+ * This code is licensed under the GPLv2.
+ *
+ * Framebuffer format conversion routines.
+ */
+
+# define SKIP_PIXEL(to) to += deststep
+#if BITS == 8
+# define COPY_PIXEL(to, from) do { *to = from; SKIP_PIXEL(to); } while (0)
+#elif BITS == 15 || BITS == 16
+# define COPY_PIXEL(to, from) \
+ do { \
+ *(uint16_t *) to = from; \
+ SKIP_PIXEL(to); \
+ } while (0)
+#elif BITS == 24
+# define COPY_PIXEL(to, from) \
+ do { \
+ *(uint16_t *) to = from; \
+ *(to + 2) = (from) >> 16; \
+ SKIP_PIXEL(to); \
+ } while (0)
+#elif BITS == 32
+# define COPY_PIXEL(to, from) \
+ do { \
+ *(uint32_t *) to = from; \
+ SKIP_PIXEL(to); \
+ } while (0)
+#else
+# error unknown bit depth
+#endif
+
+#ifdef HOST_WORDS_BIGENDIAN
+# define SWAP_WORDS 1
+#endif
+
+#define FN_2(x) FN(x + 1) FN(x)
+#define FN_4(x) FN_2(x + 2) FN_2(x)
+
+static void glue(pxa2xx_draw_line2_, BITS)(void *opaque,
+ uint8_t *dest, const uint8_t *src, int width, int deststep)
+{
+ uint32_t *palette = opaque;
+ uint32_t data;
+ while (width > 0) {
+ data = *(uint32_t *) src;
+#define FN(x) COPY_PIXEL(dest, palette[(data >> ((x) * 2)) & 3]);
+#ifdef SWAP_WORDS
+ FN_4(12)
+ FN_4(8)
+ FN_4(4)
+ FN_4(0)
+#else
+ FN_4(0)
+ FN_4(4)
+ FN_4(8)
+ FN_4(12)
+#endif
+#undef FN
+ width -= 16;
+ src += 4;
+ }
+}
+
+static void glue(pxa2xx_draw_line4_, BITS)(void *opaque,
+ uint8_t *dest, const uint8_t *src, int width, int deststep)
+{
+ uint32_t *palette = opaque;
+ uint32_t data;
+ while (width > 0) {
+ data = *(uint32_t *) src;
+#define FN(x) COPY_PIXEL(dest, palette[(data >> ((x) * 4)) & 0xf]);
+#ifdef SWAP_WORDS
+ FN_2(6)
+ FN_2(4)
+ FN_2(2)
+ FN_2(0)
+#else
+ FN_2(0)
+ FN_2(2)
+ FN_2(4)
+ FN_2(6)
+#endif
+#undef FN
+ width -= 8;
+ src += 4;
+ }
+}
+
+static void glue(pxa2xx_draw_line8_, BITS)(void *opaque,
+ uint8_t *dest, const uint8_t *src, int width, int deststep)
+{
+ uint32_t *palette = opaque;
+ uint32_t data;
+ while (width > 0) {
+ data = *(uint32_t *) src;
+#define FN(x) COPY_PIXEL(dest, palette[(data >> (x)) & 0xff]);
+#ifdef SWAP_WORDS
+ FN(24)
+ FN(16)
+ FN(8)
+ FN(0)
+#else
+ FN(0)
+ FN(8)
+ FN(16)
+ FN(24)
+#endif
+#undef FN
+ width -= 4;
+ src += 4;
+ }
+}
+
+static void glue(pxa2xx_draw_line16_, BITS)(void *opaque,
+ uint8_t *dest, const uint8_t *src, int width, int deststep)
+{
+ uint32_t data;
+ unsigned int r, g, b;
+ while (width > 0) {
+ data = *(uint32_t *) src;
+#ifdef SWAP_WORDS
+ data = bswap32(data);
+#endif
+ b = (data & 0x1f) << 3;
+ data >>= 5;
+ g = (data & 0x3f) << 2;
+ data >>= 6;
+ r = (data & 0x1f) << 3;
+ data >>= 5;
+ COPY_PIXEL(dest, glue(rgb_to_pixel, BITS)(r, g, b));
+ b = (data & 0x1f) << 3;
+ data >>= 5;
+ g = (data & 0x3f) << 2;
+ data >>= 6;
+ r = (data & 0x1f) << 3;
+ COPY_PIXEL(dest, glue(rgb_to_pixel, BITS)(r, g, b));
+ width -= 2;
+ src += 4;
+ }
+}
+
+static void glue(pxa2xx_draw_line16t_, BITS)(void *opaque,
+ uint8_t *dest, const uint8_t *src, int width, int deststep)
+{
+ uint32_t data;
+ unsigned int r, g, b;
+ while (width > 0) {
+ data = *(uint32_t *) src;
+#ifdef SWAP_WORDS
+ data = bswap32(data);
+#endif
+ b = (data & 0x1f) << 3;
+ data >>= 5;
+ g = (data & 0x1f) << 3;
+ data >>= 5;
+ r = (data & 0x1f) << 3;
+ data >>= 5;
+ if (data & 1)
+ SKIP_PIXEL(dest);
+ else
+ COPY_PIXEL(dest, glue(rgb_to_pixel, BITS)(r, g, b));
+ data >>= 1;
+ b = (data & 0x1f) << 3;
+ data >>= 5;
+ g = (data & 0x1f) << 3;
+ data >>= 5;
+ r = (data & 0x1f) << 3;
+ data >>= 5;
+ if (data & 1)
+ SKIP_PIXEL(dest);
+ else
+ COPY_PIXEL(dest, glue(rgb_to_pixel, BITS)(r, g, b));
+ width -= 2;
+ src += 4;
+ }
+}
+
+static void glue(pxa2xx_draw_line18_, BITS)(void *opaque,
+ uint8_t *dest, const uint8_t *src, int width, int deststep)
+{
+ uint32_t data;
+ unsigned int r, g, b;
+ while (width > 0) {
+ data = *(uint32_t *) src;
+#ifdef SWAP_WORDS
+ data = bswap32(data);
+#endif
+ b = (data & 0x3f) << 2;
+ data >>= 6;
+ g = (data & 0x3f) << 2;
+ data >>= 6;
+ r = (data & 0x3f) << 2;
+ COPY_PIXEL(dest, glue(rgb_to_pixel, BITS)(r, g, b));
+ width -= 1;
+ src += 4;
+ }
+}
+
+/* The wicked packed format */
+static void glue(pxa2xx_draw_line18p_, BITS)(void *opaque,
+ uint8_t *dest, const uint8_t *src, int width, int deststep)
+{
+ uint32_t data[3];
+ unsigned int r, g, b;
+ while (width > 0) {
+ data[0] = *(uint32_t *) src;
+ src += 4;
+ data[1] = *(uint32_t *) src;
+ src += 4;
+ data[2] = *(uint32_t *) src;
+ src += 4;
+#ifdef SWAP_WORDS
+ data[0] = bswap32(data[0]);
+ data[1] = bswap32(data[1]);
+ data[2] = bswap32(data[2]);
+#endif
+ b = (data[0] & 0x3f) << 2;
+ data[0] >>= 6;
+ g = (data[0] & 0x3f) << 2;
+ data[0] >>= 6;
+ r = (data[0] & 0x3f) << 2;
+ data[0] >>= 12;
+ COPY_PIXEL(dest, glue(rgb_to_pixel, BITS)(r, g, b));
+ b = (data[0] & 0x3f) << 2;
+ data[0] >>= 6;
+ g = ((data[1] & 0xf) << 4) | (data[0] << 2);
+ data[1] >>= 4;
+ r = (data[1] & 0x3f) << 2;
+ data[1] >>= 12;
+ COPY_PIXEL(dest, glue(rgb_to_pixel, BITS)(r, g, b));
+ b = (data[1] & 0x3f) << 2;
+ data[1] >>= 6;
+ g = (data[1] & 0x3f) << 2;
+ data[1] >>= 6;
+ r = ((data[2] & 0x3) << 6) | (data[1] << 2);
+ data[2] >>= 8;
+ COPY_PIXEL(dest, glue(rgb_to_pixel, BITS)(r, g, b));
+ b = (data[2] & 0x3f) << 2;
+ data[2] >>= 6;
+ g = (data[2] & 0x3f) << 2;
+ data[2] >>= 6;
+ r = data[2] << 2;
+ COPY_PIXEL(dest, glue(rgb_to_pixel, BITS)(r, g, b));
+ width -= 4;
+ }
+}
+
+static void glue(pxa2xx_draw_line19_, BITS)(void *opaque,
+ uint8_t *dest, const uint8_t *src, int width, int deststep)
+{
+ uint32_t data;
+ unsigned int r, g, b;
+ while (width > 0) {
+ data = *(uint32_t *) src;
+#ifdef SWAP_WORDS
+ data = bswap32(data);
+#endif
+ b = (data & 0x3f) << 2;
+ data >>= 6;
+ g = (data & 0x3f) << 2;
+ data >>= 6;
+ r = (data & 0x3f) << 2;
+ data >>= 6;
+ if (data & 1)
+ SKIP_PIXEL(dest);
+ else
+ COPY_PIXEL(dest, glue(rgb_to_pixel, BITS)(r, g, b));
+ width -= 1;
+ src += 4;
+ }
+}
+
+/* The wicked packed format */
+static void glue(pxa2xx_draw_line19p_, BITS)(void *opaque,
+ uint8_t *dest, const uint8_t *src, int width, int deststep)
+{
+ uint32_t data[3];
+ unsigned int r, g, b;
+ while (width > 0) {
+ data[0] = *(uint32_t *) src;
+ src += 4;
+ data[1] = *(uint32_t *) src;
+ src += 4;
+ data[2] = *(uint32_t *) src;
+ src += 4;
+# ifdef SWAP_WORDS
+ data[0] = bswap32(data[0]);
+ data[1] = bswap32(data[1]);
+ data[2] = bswap32(data[2]);
+# endif
+ b = (data[0] & 0x3f) << 2;
+ data[0] >>= 6;
+ g = (data[0] & 0x3f) << 2;
+ data[0] >>= 6;
+ r = (data[0] & 0x3f) << 2;
+ data[0] >>= 6;
+ if (data[0] & 1)
+ SKIP_PIXEL(dest);
+ else
+ COPY_PIXEL(dest, glue(rgb_to_pixel, BITS)(r, g, b));
+ data[0] >>= 6;
+ b = (data[0] & 0x3f) << 2;
+ data[0] >>= 6;
+ g = ((data[1] & 0xf) << 4) | (data[0] << 2);
+ data[1] >>= 4;
+ r = (data[1] & 0x3f) << 2;
+ data[1] >>= 6;
+ if (data[1] & 1)
+ SKIP_PIXEL(dest);
+ else
+ COPY_PIXEL(dest, glue(rgb_to_pixel, BITS)(r, g, b));
+ data[1] >>= 6;
+ b = (data[1] & 0x3f) << 2;
+ data[1] >>= 6;
+ g = (data[1] & 0x3f) << 2;
+ data[1] >>= 6;
+ r = ((data[2] & 0x3) << 6) | (data[1] << 2);
+ data[2] >>= 2;
+ if (data[2] & 1)
+ SKIP_PIXEL(dest);
+ else
+ COPY_PIXEL(dest, glue(rgb_to_pixel, BITS)(r, g, b));
+ data[2] >>= 6;
+ b = (data[2] & 0x3f) << 2;
+ data[2] >>= 6;
+ g = (data[2] & 0x3f) << 2;
+ data[2] >>= 6;
+ r = data[2] << 2;
+ data[2] >>= 6;
+ if (data[2] & 1)
+ SKIP_PIXEL(dest);
+ else
+ COPY_PIXEL(dest, glue(rgb_to_pixel, BITS)(r, g, b));
+ width -= 4;
+ }
+}
+
+static void glue(pxa2xx_draw_line24_, BITS)(void *opaque,
+ uint8_t *dest, const uint8_t *src, int width, int deststep)
+{
+ uint32_t data;
+ unsigned int r, g, b;
+ while (width > 0) {
+ data = *(uint32_t *) src;
+#ifdef SWAP_WORDS
+ data = bswap32(data);
+#endif
+ b = data & 0xff;
+ data >>= 8;
+ g = data & 0xff;
+ data >>= 8;
+ r = data & 0xff;
+ COPY_PIXEL(dest, glue(rgb_to_pixel, BITS)(r, g, b));
+ width -= 1;
+ src += 4;
+ }
+}
+
+static void glue(pxa2xx_draw_line24t_, BITS)(void *opaque,
+ uint8_t *dest, const uint8_t *src, int width, int deststep)
+{
+ uint32_t data;
+ unsigned int r, g, b;
+ while (width > 0) {
+ data = *(uint32_t *) src;
+#ifdef SWAP_WORDS
+ data = bswap32(data);
+#endif
+ b = (data & 0x7f) << 1;
+ data >>= 7;
+ g = data & 0xff;
+ data >>= 8;
+ r = data & 0xff;
+ data >>= 8;
+ if (data & 1)
+ SKIP_PIXEL(dest);
+ else
+ COPY_PIXEL(dest, glue(rgb_to_pixel, BITS)(r, g, b));
+ width -= 1;
+ src += 4;
+ }
+}
+
+static void glue(pxa2xx_draw_line25_, BITS)(void *opaque,
+ uint8_t *dest, const uint8_t *src, int width, int deststep)
+{
+ uint32_t data;
+ unsigned int r, g, b;
+ while (width > 0) {
+ data = *(uint32_t *) src;
+#ifdef SWAP_WORDS
+ data = bswap32(data);
+#endif
+ b = data & 0xff;
+ data >>= 8;
+ g = data & 0xff;
+ data >>= 8;
+ r = data & 0xff;
+ data >>= 8;
+ if (data & 1)
+ SKIP_PIXEL(dest);
+ else
+ COPY_PIXEL(dest, glue(rgb_to_pixel, BITS)(r, g, b));
+ width -= 1;
+ src += 4;
+ }
+}
+
+/* Overlay planes disabled, no transparency */
+static drawfn glue(pxa2xx_draw_fn_, BITS)[16] =
+{
+ [0 ... 0xf] = NULL,
+ [pxa_lcdc_2bpp] = glue(pxa2xx_draw_line2_, BITS),
+ [pxa_lcdc_4bpp] = glue(pxa2xx_draw_line4_, BITS),
+ [pxa_lcdc_8bpp] = glue(pxa2xx_draw_line8_, BITS),
+ [pxa_lcdc_16bpp] = glue(pxa2xx_draw_line16_, BITS),
+ [pxa_lcdc_18bpp] = glue(pxa2xx_draw_line18_, BITS),
+ [pxa_lcdc_18pbpp] = glue(pxa2xx_draw_line18p_, BITS),
+ [pxa_lcdc_24bpp] = glue(pxa2xx_draw_line24_, BITS),
+};
+
+/* Overlay planes enabled, transparency used */
+static drawfn glue(glue(pxa2xx_draw_fn_, BITS), t)[16] =
+{
+ [0 ... 0xf] = NULL,
+ [pxa_lcdc_4bpp] = glue(pxa2xx_draw_line4_, BITS),
+ [pxa_lcdc_8bpp] = glue(pxa2xx_draw_line8_, BITS),
+ [pxa_lcdc_16bpp] = glue(pxa2xx_draw_line16t_, BITS),
+ [pxa_lcdc_19bpp] = glue(pxa2xx_draw_line19_, BITS),
+ [pxa_lcdc_19pbpp] = glue(pxa2xx_draw_line19p_, BITS),
+ [pxa_lcdc_24bpp] = glue(pxa2xx_draw_line24t_, BITS),
+ [pxa_lcdc_25bpp] = glue(pxa2xx_draw_line25_, BITS),
+};
+
+#undef BITS
+#undef COPY_PIXEL
+#undef SKIP_PIXEL
+
+#ifdef SWAP_WORDS
+# undef SWAP_WORDS
+#endif
Code Review / kvmfornfv.git / blobdiff