diff options
Diffstat (limited to 'pflib.c')
| -rw-r--r-- | pflib.c | 215 |
1 files changed, 0 insertions, 215 deletions
diff --git a/pflib.c b/pflib.c deleted file mode 100644 index 987e11001a..0000000000 --- a/pflib.c +++ /dev/null @@ -1,215 +0,0 @@ -/* - * PixelFormat conversion library. - * - * Author: Gerd Hoffmann <kraxel@redhat.com> - * - * This work is licensed under the terms of the GNU GPL, version 2. See - * the COPYING file in the top-level directory. - * - * Contributions after 2012-01-13 are licensed under the terms of the - * GNU GPL, version 2 or (at your option) any later version. - */ -#include "qemu-common.h" -#include "console.h" -#include "pflib.h" - -typedef struct QemuPixel QemuPixel; - -typedef void (*pf_convert)(QemuPfConv *conv, - void *dst, void *src, uint32_t cnt); -typedef void (*pf_convert_from)(PixelFormat *pf, - QemuPixel *dst, void *src, uint32_t cnt); -typedef void (*pf_convert_to)(PixelFormat *pf, - void *dst, QemuPixel *src, uint32_t cnt); - -struct QemuPfConv { - pf_convert convert; - PixelFormat src; - PixelFormat dst; - - /* for copy_generic() */ - pf_convert_from conv_from; - pf_convert_to conv_to; - QemuPixel *conv_buf; - uint32_t conv_cnt; -}; - -struct QemuPixel { - uint8_t red; - uint8_t green; - uint8_t blue; - uint8_t alpha; -}; - -/* ----------------------------------------------------------------------- */ -/* PixelFormat -> QemuPixel conversions */ - -static void conv_16_to_pixel(PixelFormat *pf, - QemuPixel *dst, void *src, uint32_t cnt) -{ - uint16_t *src16 = src; - - while (cnt > 0) { - dst->red = ((*src16 & pf->rmask) >> pf->rshift) << (8 - pf->rbits); - dst->green = ((*src16 & pf->gmask) >> pf->gshift) << (8 - pf->gbits); - dst->blue = ((*src16 & pf->bmask) >> pf->bshift) << (8 - pf->bbits); - dst->alpha = ((*src16 & pf->amask) >> pf->ashift) << (8 - pf->abits); - dst++, src16++, cnt--; - } -} - -/* assumes pf->{r,g,b,a}bits == 8 */ -static void conv_32_to_pixel_fast(PixelFormat *pf, - QemuPixel *dst, void *src, uint32_t cnt) -{ - uint32_t *src32 = src; - - while (cnt > 0) { - dst->red = (*src32 & pf->rmask) >> pf->rshift; - dst->green = (*src32 & pf->gmask) >> pf->gshift; - dst->blue = (*src32 & pf->bmask) >> pf->bshift; - dst->alpha = (*src32 & pf->amask) >> pf->ashift; - dst++, src32++, cnt--; - } -} - -static void conv_32_to_pixel_generic(PixelFormat *pf, - QemuPixel *dst, void *src, uint32_t cnt) -{ - uint32_t *src32 = src; - - while (cnt > 0) { - if (pf->rbits < 8) { - dst->red = ((*src32 & pf->rmask) >> pf->rshift) << (8 - pf->rbits); - } else { - dst->red = ((*src32 & pf->rmask) >> pf->rshift) >> (pf->rbits - 8); - } - if (pf->gbits < 8) { - dst->green = ((*src32 & pf->gmask) >> pf->gshift) << (8 - pf->gbits); - } else { - dst->green = ((*src32 & pf->gmask) >> pf->gshift) >> (pf->gbits - 8); - } - if (pf->bbits < 8) { - dst->blue = ((*src32 & pf->bmask) >> pf->bshift) << (8 - pf->bbits); - } else { - dst->blue = ((*src32 & pf->bmask) >> pf->bshift) >> (pf->bbits - 8); - } - if (pf->abits < 8) { - dst->alpha = ((*src32 & pf->amask) >> pf->ashift) << (8 - pf->abits); - } else { - dst->alpha = ((*src32 & pf->amask) >> pf->ashift) >> (pf->abits - 8); - } - dst++, src32++, cnt--; - } -} - -/* ----------------------------------------------------------------------- */ -/* QemuPixel -> PixelFormat conversions */ - -static void conv_pixel_to_16(PixelFormat *pf, - void *dst, QemuPixel *src, uint32_t cnt) -{ - uint16_t *dst16 = dst; - - while (cnt > 0) { - *dst16 = ((uint16_t)src->red >> (8 - pf->rbits)) << pf->rshift; - *dst16 |= ((uint16_t)src->green >> (8 - pf->gbits)) << pf->gshift; - *dst16 |= ((uint16_t)src->blue >> (8 - pf->bbits)) << pf->bshift; - *dst16 |= ((uint16_t)src->alpha >> (8 - pf->abits)) << pf->ashift; - dst16++, src++, cnt--; - } -} - -static void conv_pixel_to_32(PixelFormat *pf, - void *dst, QemuPixel *src, uint32_t cnt) -{ - uint32_t *dst32 = dst; - - while (cnt > 0) { - *dst32 = ((uint32_t)src->red >> (8 - pf->rbits)) << pf->rshift; - *dst32 |= ((uint32_t)src->green >> (8 - pf->gbits)) << pf->gshift; - *dst32 |= ((uint32_t)src->blue >> (8 - pf->bbits)) << pf->bshift; - *dst32 |= ((uint32_t)src->alpha >> (8 - pf->abits)) << pf->ashift; - dst32++, src++, cnt--; - } -} - -/* ----------------------------------------------------------------------- */ -/* PixelFormat -> PixelFormat conversions */ - -static void convert_copy(QemuPfConv *conv, void *dst, void *src, uint32_t cnt) -{ - uint32_t bytes = cnt * conv->src.bytes_per_pixel; - memcpy(dst, src, bytes); -} - -static void convert_generic(QemuPfConv *conv, void *dst, void *src, uint32_t cnt) -{ - if (conv->conv_cnt < cnt) { - conv->conv_cnt = cnt; - conv->conv_buf = g_realloc(conv->conv_buf, sizeof(QemuPixel) * conv->conv_cnt); - } - conv->conv_from(&conv->src, conv->conv_buf, src, cnt); - conv->conv_to(&conv->dst, dst, conv->conv_buf, cnt); -} - -/* ----------------------------------------------------------------------- */ -/* public interface */ - -QemuPfConv *qemu_pf_conv_get(PixelFormat *dst, PixelFormat *src) -{ - QemuPfConv *conv = g_malloc0(sizeof(QemuPfConv)); - - conv->src = *src; - conv->dst = *dst; - - if (memcmp(&conv->src, &conv->dst, sizeof(PixelFormat)) == 0) { - /* formats identical, can simply copy */ - conv->convert = convert_copy; - } else { - /* generic two-step conversion: src -> QemuPixel -> dst */ - switch (conv->src.bytes_per_pixel) { - case 2: - conv->conv_from = conv_16_to_pixel; - break; - case 4: - if (conv->src.rbits == 8 && conv->src.gbits == 8 && conv->src.bbits == 8) { - conv->conv_from = conv_32_to_pixel_fast; - } else { - conv->conv_from = conv_32_to_pixel_generic; - } - break; - default: - goto err; - } - switch (conv->dst.bytes_per_pixel) { - case 2: - conv->conv_to = conv_pixel_to_16; - break; - case 4: - conv->conv_to = conv_pixel_to_32; - break; - default: - goto err; - } - conv->convert = convert_generic; - } - return conv; - -err: - g_free(conv); - return NULL; -} - -void qemu_pf_conv_run(QemuPfConv *conv, void *dst, void *src, uint32_t cnt) -{ - conv->convert(conv, dst, src, cnt); -} - -void qemu_pf_conv_put(QemuPfConv *conv) -{ - if (conv) { - g_free(conv->conv_buf); - g_free(conv); - } -} |