mirror of https://github.com/mpv-player/mpv
224 lines
4.9 KiB
C
224 lines
4.9 KiB
C
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// mga_vid drawing functions
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static int mga_next_frame=0;
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static mga_vid_config_t mga_vid_config;
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static uint8_t *vid_data, *frames[4];
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static int f;
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static void draw_alpha(int x0,int y0, int w,int h, unsigned char* src, unsigned char *srca, int stride){
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int x,y;
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uint32_t bespitch = (mga_vid_config.src_width + 31) & ~31;
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if (mga_vid_config.format==MGA_VID_FORMAT_YV12){
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for(y=0;y<h;y++){
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uint8_t *dst = vid_data + bespitch * (y0+y) + x0;
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for(x=0;x<w;x++){
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// dst[x]=(dst[x]*srca[x]+src[x]*(srca[x]^255))>>8;
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if(srca[x])
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dst[x]=((dst[x]*srca[x])>>8)+src[x];
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//dst[x]=(dst[x]*(srca[x]^255)+src[x]*(srca[x]))>>8;
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}
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src+=stride;
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srca+=stride;
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}
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} else {
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for(y=0;y<h;y++){
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uint8_t *dst = vid_data + 2*(bespitch * (y0+y) + x0);
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for(x=0;x<w;x++){
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// dst[x]=(dst[x]*srca[x]+src[x]*(srca[x]^255))>>8;
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if(srca[x])
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dst[2*x]=((dst[2*x]*srca[x])>>8)+src[x];
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//dst[2*x]=(dst[2*x]*(srca[x]^255)+src[x]*(srca[x]))>>8;
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}
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src+=stride;
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srca+=stride;
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}
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}
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}
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//static void
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//write_slice_g200(uint8_t *y,uint8_t *cr, uint8_t *cb,uint32_t slice_num)
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static void
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draw_slice_g200(uint8_t *image[], int stride[], int width,int height,int x,int y)
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{
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uint8_t *src;
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uint8_t *src2;
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uint8_t *dest;
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uint32_t bespitch,h,w;
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bespitch = (mga_vid_config.src_width + 31) & ~31;
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dest = vid_data + bespitch * y * x;
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src = image[0];
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for(h=0; h < height; h++)
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{
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memcpy(dest, src, width);
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src += stride[0];
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dest += bespitch;
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}
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width/=2;height/=2;x/=2;y/=2;
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dest = vid_data + bespitch * mga_vid_config.src_height +
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bespitch * y + 2*x;
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src = image[1];
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src2 = image[2];
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for(h=0; h < height; h++)
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{
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for(w=0; w < width; w++)
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{
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dest[2*w+0] = src[w];
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dest[2*w+1] = src2[w];
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}
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dest += bespitch;
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src += stride[1];
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src2+= stride[2];
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}
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}
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static void
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draw_slice_g400(uint8_t *image[], int stride[], int w,int h,int x,int y)
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{
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uint8_t *src;
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uint8_t *dest;
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uint32_t bespitch,bespitch2;
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int i;
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bespitch = (mga_vid_config.src_width + 31) & ~31;
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bespitch2 = bespitch/2;
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dest = vid_data + bespitch * y + x;
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src = image[0];
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for(i=0;i<h;i++){
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memcpy(dest,src,w);
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src+=stride[0];
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dest += bespitch;
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}
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w/=2;h/=2;x/=2;y/=2;
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dest = vid_data + bespitch*mga_vid_config.src_height + bespitch2 * y + x;
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src = image[1];
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for(i=0;i<h;i++){
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memcpy(dest,src,w);
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src+=stride[1];
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dest += bespitch2;
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}
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dest = vid_data + bespitch*mga_vid_config.src_height
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+ bespitch*mga_vid_config.src_height / 4
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+ bespitch2 * y + x;
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src = image[2];
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for(i=0;i<h;i++){
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memcpy(dest,src,w);
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src+=stride[2];
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dest += bespitch2;
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}
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}
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static uint32_t
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draw_slice(uint8_t *src[], int stride[], int w,int h,int x,int y)
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{
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if (mga_vid_config.card_type == MGA_G200)
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draw_slice_g200(src,stride,w,h,x,y);
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else
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draw_slice_g400(src,stride,w,h,x,y);
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return 0;
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}
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static void
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vo_mga_flip_page(void)
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{
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// printf("-- flip to %d --\n",mga_next_frame);
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#if 1
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ioctl(f,MGA_VID_FSEL,&mga_next_frame);
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mga_next_frame=(mga_next_frame+1)%mga_vid_config.num_frames;
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vid_data=frames[mga_next_frame];
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#endif
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}
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static void
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write_frame_yuy2(uint8_t *y)
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{
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uint8_t *dest;
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uint32_t bespitch,h;
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int len=2*mga_vid_config.src_width;
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dest = vid_data;
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bespitch = (mga_vid_config.src_width + 31) & ~31;
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// y+=2*mga_vid_config.src_width*mga_vid_config.src_height;
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for(h=0; h < mga_vid_config.src_height; h++)
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{
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// y -= 2*mga_vid_config.src_width;
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memcpy(dest, y, len);
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y += len;
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dest += 2*bespitch;
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}
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}
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static uint32_t
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draw_frame(uint8_t *src[])
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{
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if (mga_vid_config.format==MGA_VID_FORMAT_YUY2)
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write_frame_yuy2(src[0]);
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return 0;
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}
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static uint32_t
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query_format(uint32_t format)
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{
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switch(format){
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case IMGFMT_YV12:
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case IMGFMT_YUY2:
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// case IMGFMT_RGB|24:
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// case IMGFMT_BGR|24:
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return 1;
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}
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return 0;
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}
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static int mga_init(){
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char *frame_mem;
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mga_vid_config.num_frames=4;
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mga_vid_config.version=MGA_VID_VERSION;
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if (ioctl(f,MGA_VID_CONFIG,&mga_vid_config))
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{
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perror("Error in mga_vid_config ioctl()");
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printf("Your mga_vid driver version is incompatible with this MPlayer version!\n");
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return -1;
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}
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ioctl(f,MGA_VID_ON,0);
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frames[0] = (char*)mmap(0,mga_vid_config.frame_size*mga_vid_config.num_frames,PROT_WRITE,MAP_SHARED,f,0);
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frames[1] = frames[0] + 1*mga_vid_config.frame_size;
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frames[2] = frames[0] + 2*mga_vid_config.frame_size;
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frames[3] = frames[0] + 3*mga_vid_config.frame_size;
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mga_next_frame = 0;
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vid_data = frames[mga_next_frame];
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//clear the buffer
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memset(frames[0],0x80,mga_vid_config.frame_size*mga_vid_config.num_frames);
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return 0;
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}
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