//----------------------------------------------------------------------------
//
// Test: test_tuner
//
// Description: Iterates through each of the known local channels,
// and attempts to save an image from each of them.
//
// Setup: - Source is TV tuner
// - Tunes to each local channel sequentially
// - Uses standard window sizing
// - Saves in RGB24 format
//
//----------------------------------------------------------------------------
int test_tuner( FRAMEGRABBER* fg )
{
FRAME* frame = NULL;
char fname[32];
int i;
_T( fg_set_format( fg, VIDEO_PALETTE_RGB32 ) );
_T( fg_set_capture_window( fg, 0, 0, 320, 240 ) );
_N( frame = fg_new_compatible_frame( fg ) );
for ( i = 0; i < sizeof(local)/sizeof(CHANNEL); i++ )
{
printf( "%u. Saving %s @ %fMHz\n", i, local[i].name, local[i].freq );
_T( fg_set_channel( fg, local[i].freq ) );
// Catch up to the new tuning
_N( fg_grab_frame( fg, frame ) );
_N( fg_grab_frame( fg, frame ) );
snprintf( fname, sizeof(fname), "test_%s.ppm", local[i].name );
_T( frame_save( frame, fname ) );
}
frame_release( frame );
return 0;
}
//----------------------------------------------------------------------------
//
// Test: test_simple_grab
//
// Description: Grabs a single frame and saves it to a file.
//
// Setup: - Source is TV tuner
// - Uses standard window sizing
// - Tunes to first local channel
//
//----------------------------------------------------------------------------
int test_simple_grab( FRAMEGRABBER* fg )
{
FRAME* frame = NULL;
_T( fg_set_source( fg, FG_SOURCE_TV ) );
_T( fg_set_capture_window( fg, 0, 0,
fg->caps.maxwidth,
fg->caps.maxheight ) );
_T( fg_set_channel( fg, local[0].freq ) );
_T( fg_set_brightness( fg, 75 ) );
_T( fg_set_colour( fg, 80 ) );
_N( frame = fg_grab( fg ) );
printf( "Saving test frame...\n" );
_T( frame_save( frame, "test_frame.ppm" ) );
frame_release( frame );
return 0;
}
static inline void __page_unmap(vaddr_t vaddr)
{
if (vaddr & PAGE_MASK)
return;
__virtaddr_t virtaddr = {.raw = vaddr};
size_t pml4 = virtaddr.pml4;
size_t dirtbl = virtaddr.dirtbl;
size_t directory = virtaddr.directory;
size_t table = virtaddr.table;
if (LVL4[pml4].present &&
LVL3(pml4)[dirtbl].present &&
LVL2(pml4, dirtbl)[directory].present) {
/* Dereference page */
LVL1(pml4, dirtbl, directory)[table].raw = 0;
#if 0
/* Decrement references */
paddr_t table_phy = GET_PHYS_ADDR(&LVL2(pml4, dirtbl)[directory]);
pages[table_phy/PAGE_SIZE].refs--;
if (!pages[table_phy/PAGE_SIZE].refs) {
frame_release(table_phy);
LVL2(pml4, dirtbl)[directory].present = 0;
}
paddr_t directory_phy = GET_PHYS_ADDR(&LVL3(pml4)[dirtbl]);
pages[directory_phy/PAGE_SIZE].refs--;
if (!pages[directory_phy/PAGE_SIZE].refs) {
frame_release(directory_phy);
LVL3(pml4)[dirtbl].present = 0;
}
paddr_t dirtbl_phy = GET_PHYS_ADDR(&LVL4[pml4]);
pages[directory_phy/PAGE_SIZE].refs--;
if (!pages[directory_phy/PAGE_SIZE].refs) {
frame_release(directory_phy);
LVL4[pml4].present = 0;
}
#endif
tlb_invalidate_page(vaddr);
}
}
//----------------------------------------------------------------------------
//
// Test: test_formats
//
// Description: Iterates through each of the supported frame formats,
// and attempts to save an image in each of them.
//
// Setup: - Source is default
// - Channel tuning is default
// - Window sizing is default
//
//----------------------------------------------------------------------------
int test_formats( FRAMEGRABBER* fg )
{
FRAME* frame = NULL;
char fname[32];
int i;
for ( i = 0; i < sizeof(fmts)/sizeof(FMT); i++ )
{
printf( "Saving in %s...\n", fmts[i].name );
_T( fg_set_format( fg, fmts[i].format ) );
_N( frame = fg_grab( fg ) );
snprintf( fname, sizeof(fname), "test_%s.ppm", fmts[i].name );
_T( frame_save( frame, fname ) );
frame_release( frame );
}
return 0;
}
