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Initial commit of work-in-progress MPEG video player plugin based on libmpeg2. Works on all targets with colour LCDs, but most optimised for the ipod Color/Photo and Nano. It currently only plays raw MPEG-1 or MPEG-2 video streams (no audio). Also adds a new lcd_yuv_blit() function to the plugin API - currently only implemented for the ipod Color/Photo and Nano.
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@10479 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Dave Chapman
parent
754e173c25
commit
c9d66562af
27 changed files with 6457 additions and 2 deletions
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@ -400,6 +400,237 @@ void lcd_blit(const fb_data* data, int x, int by, int width,
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(void)stride;
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}
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#define CSUB_X 2
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#define CSUB_Y 2
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#define RYFAC (31*257)
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#define GYFAC (63*257)
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#define BYFAC (31*257)
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#define RVFAC 11170 /* 31 * 257 * 1.402 */
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#define GVFAC (-11563) /* 63 * 257 * -0.714136 */
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#define GUFAC (-5572) /* 63 * 257 * -0.344136 */
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#define BUFAC 14118 /* 31 * 257 * 1.772 */
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#define ROUNDOFFS (127*257)
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/* Performance function to blit a YUV bitmap directly to the LCD */
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void lcd_yuv_blit(unsigned char * const src[3],
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int src_x, int src_y, int stride,
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int x, int y, int width, int height)
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{
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int y0, x0, y1, x1;
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int h;
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/* nothing to draw? */
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if ((width <= 0) || (height <= 0) || (x >= LCD_WIDTH) || (y >= LCD_HEIGHT)
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|| (x + width <= 0) || (y + height <= 0))
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return;
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/* clipping */
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if (x < 0)
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{
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width += x;
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src_x -= x;
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x = 0;
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}
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if (y < 0)
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{
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height += y;
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src_y -= y;
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y = 0;
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}
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if (x + width > LCD_WIDTH)
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width = LCD_WIDTH - x;
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if (y + height > LCD_HEIGHT)
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height = LCD_HEIGHT - y;
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/* calculate the drawing region */
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#if CONFIG_LCD == LCD_IPODNANO
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y0 = x; /* start horiz */
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x0 = y; /* start vert */
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y1 = (x + width) - 1; /* max horiz */
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x1 = (y + height) - 1; /* max vert */
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#elif CONFIG_LCD == LCD_IPODCOLOR
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y0 = y; /* start vert */
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x0 = (LCD_WIDTH - 1) - x; /* start horiz */
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y1 = (y + height) - 1; /* end vert */
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x1 = (x0 - width) + 1; /* end horiz */
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#endif
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/* setup the drawing region */
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if (lcd_type == 0) {
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lcd_cmd_data(0x12, y0); /* start vert */
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lcd_cmd_data(0x13, x0); /* start horiz */
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lcd_cmd_data(0x15, y1); /* end vert */
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lcd_cmd_data(0x16, x1); /* end horiz */
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} else {
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/* swap max horiz < start horiz */
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if (y1 < y0) {
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int t;
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t = y0;
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y0 = y1;
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y1 = t;
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}
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/* swap max vert < start vert */
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if (x1 < x0) {
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int t;
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t = x0;
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x0 = x1;
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x1 = t;
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}
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/* max horiz << 8 | start horiz */
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lcd_cmd_data(LCD_CNTL_HORIZ_RAM_ADDR_POS, (y1 << 8) | y0);
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/* max vert << 8 | start vert */
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lcd_cmd_data(LCD_CNTL_VERT_RAM_ADDR_POS, (x1 << 8) | x0);
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/* start vert = max vert */
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#if CONFIG_LCD == LCD_IPODCOLOR
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x0 = x1;
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#endif
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/* position cursor (set AD0-AD15) */
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/* start vert << 8 | start horiz */
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lcd_cmd_data(LCD_CNTL_RAM_ADDR_SET, ((x0 << 8) | y0));
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/* start drawing */
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lcd_send_lo(0x0);
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lcd_send_lo(LCD_CNTL_WRITE_TO_GRAM);
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}
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h=0;
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while (1) {
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int pixels_to_write;
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const unsigned char *ysrc = src[0] + stride * src_y + src_x;
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const unsigned char *row_end = ysrc + width;
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int y, u, v;
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int red, green, blue;
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unsigned rbits, gbits, bbits;
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fb_data pixel1,pixel2;
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if (h==0) {
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while ((inl(0x70008a20) & 0x4000000) == 0);
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outl(0x0, 0x70008a24);
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if (height == 0) break;
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pixels_to_write = (width * height) * 2;
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h = height;
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/* calculate how much we can do in one go */
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if (pixels_to_write > 64000) {
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h = (64000/2) / width;
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pixels_to_write = (width * h) * 2;
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}
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height -= h;
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outl(0x10000080, 0x70008a20);
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outl((pixels_to_write - 1) | 0xc0010000, 0x70008a24);
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outl(0x34000000, 0x70008a20);
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}
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/* upsampling, YUV->RGB conversion and reduction to RGB565 in one go */
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const unsigned char *usrc = src[1] + (stride/CSUB_X) * (src_y/CSUB_Y)
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+ (src_x/CSUB_X);
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const unsigned char *vsrc = src[2] + (stride/CSUB_X) * (src_y/CSUB_Y)
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+ (src_x/CSUB_X);
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int rc, gc, bc;
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u = *usrc++ - 128;
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v = *vsrc++ - 128;
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rc = RVFAC * v + ROUNDOFFS;
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gc = GVFAC * v + GUFAC * u + ROUNDOFFS;
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bc = BUFAC * u + ROUNDOFFS;
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do
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{
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y = *ysrc++;
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red = RYFAC * y + rc;
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green = GYFAC * y + gc;
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blue = BYFAC * y + bc;
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if ((unsigned)red > (RYFAC*255+ROUNDOFFS))
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{
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if (red < 0)
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red = 0;
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else
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red = (RYFAC*255+ROUNDOFFS);
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}
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if ((unsigned)green > (GYFAC*255+ROUNDOFFS))
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{
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if (green < 0)
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green = 0;
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else
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green = (GYFAC*255+ROUNDOFFS);
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}
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if ((unsigned)blue > (BYFAC*255+ROUNDOFFS))
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{
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if (blue < 0)
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blue = 0;
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else
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blue = (BYFAC*255+ROUNDOFFS);
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}
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rbits = ((unsigned)red) >> 16 ;
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gbits = ((unsigned)green) >> 16 ;
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bbits = ((unsigned)blue) >> 16 ;
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pixel1 = swap16((rbits << 11) | (gbits << 5) | bbits);
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y = *ysrc++;
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red = RYFAC * y + rc;
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green = GYFAC * y + gc;
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blue = BYFAC * y + bc;
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if ((unsigned)red > (RYFAC*255+ROUNDOFFS))
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{
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if (red < 0)
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red = 0;
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else
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red = (RYFAC*255+ROUNDOFFS);
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}
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if ((unsigned)green > (GYFAC*255+ROUNDOFFS))
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{
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if (green < 0)
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green = 0;
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else
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green = (GYFAC*255+ROUNDOFFS);
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}
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if ((unsigned)blue > (BYFAC*255+ROUNDOFFS))
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{
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if (blue < 0)
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blue = 0;
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else
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blue = (BYFAC*255+ROUNDOFFS);
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}
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rbits = ((unsigned)red) >> 16 ;
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gbits = ((unsigned)green) >> 16 ;
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bbits = ((unsigned)blue) >> 16 ;
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pixel2 = swap16((rbits << 11) | (gbits << 5) | bbits);
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u = *usrc++ - 128;
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v = *vsrc++ - 128;
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rc = RVFAC * v + ROUNDOFFS;
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gc = GVFAC * v + GUFAC * u + ROUNDOFFS;
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bc = BUFAC * u + ROUNDOFFS;
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while ((inl(0x70008a20) & 0x1000000) == 0);
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/* output 2 pixels */
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outl((pixel2<<16)|pixel1, 0x70008b00);
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}
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while (ysrc < row_end);
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src_y++;
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h--;
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}
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while ((inl(0x70008a20) & 0x4000000) == 0);
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outl(0x0, 0x70008a24);
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}
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/* Update a fraction of the display. */
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void lcd_update_rect(int x, int y, int width, int height)
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{
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