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platform_system_core
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Add bitfields to header for screen shots. This will allow ddms to distinguish 

between various 32 bit pixel formats.  Also adds new version number for
future expansion.

Change-Id: Ia1d7d7485614e961a47ebb65493b19f4a16ded05
Signed-off-by: Rebecca Schultz Zavin <rebecca@android.com>
This commit is contained in:
Rebecca Schultz Zavin 2009-09-15 21:06:12 -07:00
parent 7a013f967e
commit 154b7d7de4
1 changed files with 36 additions and 9 deletions
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45
adb/framebuffer_service.c
View File

@ -30,6 +30,24 @@
/* TODO:
** - sync with vsync to avoid tearing
*/
/* This version number defines the format of the fbinfo struct.
It must match versioning in ddms where this data is consumed. */
#define DDMS_RAWIMAGE_VERSION 1
struct fbinfo {
unsigned int version;
unsigned int bpp;
unsigned int size;
unsigned int width;
unsigned int height;
unsigned int red_offset;
unsigned int red_length;
unsigned int blue_offset;
unsigned int blue_length;
unsigned int green_offset;
unsigned int green_length;
unsigned int alpha_offset;
unsigned int alpha_length;
} __attribute__((packed));
void framebuffer_service(int fd, void *cookie)
{
@ -37,7 +55,7 @@ void framebuffer_service(int fd, void *cookie)
int fb, offset;
char x[256];
unsigned fbinfo[4];
struct fbinfo fbinfo;
unsigned i, bytespp;
fb = open("/dev/graphics/fb0", O_RDONLY);
@ -48,10 +66,19 @@ void framebuffer_service(int fd, void *cookie)
bytespp = vinfo.bits_per_pixel / 8;
fbinfo[0] = vinfo.bits_per_pixel;
fbinfo[1] = vinfo.xres * vinfo.yres * bytespp;
fbinfo[2] = vinfo.xres;
fbinfo[3] = vinfo.yres;
fbinfo.version = DDMS_RAWIMAGE_VERSION;
fbinfo.bpp = vinfo.bits_per_pixel;
fbinfo.size = vinfo.xres * vinfo.yres * bytespp;
fbinfo.width = vinfo.xres;
fbinfo.height = vinfo.yres;
fbinfo.red_offset = vinfo.red.offset;
fbinfo.red_length = vinfo.red.length;
fbinfo.green_offset = vinfo.green.offset;
fbinfo.green_length = vinfo.green.length;
fbinfo.blue_offset = vinfo.blue.offset;
fbinfo.blue_length = vinfo.blue.length;
fbinfo.alpha_offset = vinfo.transp.offset;
fbinfo.alpha_length = vinfo.transp.length;
/* HACK: for several of our 3d cores a specific alignment
* is required so the start of the fb may not be an integer number of lines
@ -62,16 +89,16 @@ void framebuffer_service(int fd, void *cookie)
offset += vinfo.xres * vinfo.yoffset * bytespp;
if(writex(fd, fbinfo, sizeof(fbinfo))) goto done;
if(writex(fd, &fbinfo, sizeof(fbinfo))) goto done;
lseek(fb, offset, SEEK_SET);
for(i = 0; i < fbinfo[1]; i += 256) {
for(i = 0; i < fbinfo.size; i += 256) {
if(readx(fb, &x, 256)) goto done;
if(writex(fd, &x, 256)) goto done;
}
if(readx(fb, &x, fbinfo[1] % 256)) goto done;
if(writex(fd, &x, fbinfo[1] % 256)) goto done;
if(readx(fb, &x, fbinfo.size % 256)) goto done;
if(writex(fd, &x, fbinfo.size % 256)) goto done;
done:
if(fb >= 0) close(fb);