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videomixer: check resolution and frame length

This commit is contained in:
Sebastien Bourdeauducq 2013-11-13 18:57:39 +01:00
parent 34e8e8c259
commit a5d9f72901
1 changed files with 54 additions and 11 deletions
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61
software/videomixer/dvisamplerX.c
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@ -17,24 +17,60 @@ int dvisamplerX_debug;
static unsigned int dvisamplerX_framebuffers[FRAMEBUFFER_COUNT][1280*720] __attribute__((aligned(16))); static unsigned int dvisamplerX_framebuffers[FRAMEBUFFER_COUNT][1280*720] __attribute__((aligned(16)));
static int dvisamplerX_fb_slot_indexes[2]; static int dvisamplerX_fb_slot_indexes[2];
static int dvisamplerX_next_fb_index; static int dvisamplerX_next_fb_index;
static int dvisamplerX_hres, dvisamplerX_vres;
void dvisamplerX_isr(void) void dvisamplerX_isr(void)
{ {
int fb_index = -1; int fb_index = -1;
int length;
int expected_length;
unsigned int address_min, address_max;
if((dvisamplerX_resdetection_hres_read() != dvisamplerX_hres)
|| (dvisamplerX_resdetection_vres_read() != dvisamplerX_vres)) {
/* Dump frames until we get the expected resolution */
if(dvisamplerX_dma_slot0_status_read() == DVISAMPLER_SLOT_PENDING) { if(dvisamplerX_dma_slot0_status_read() == DVISAMPLER_SLOT_PENDING) {
fb_index = dvisamplerX_fb_slot_indexes[0]; dvisamplerX_dma_slot0_address_write((unsigned int)dvisamplerX_framebuffers[dvisamplerX_fb_slot_indexes[0]]);
dvisamplerX_fb_slot_indexes[0] = dvisamplerX_next_fb_index;
dvisamplerX_dma_slot0_address_write((unsigned int)dvisamplerX_framebuffers[dvisamplerX_next_fb_index]);
dvisamplerX_dma_slot0_status_write(DVISAMPLER_SLOT_LOADED); dvisamplerX_dma_slot0_status_write(DVISAMPLER_SLOT_LOADED);
dvisamplerX_next_fb_index = (dvisamplerX_next_fb_index + 1) & FRAMEBUFFER_MASK;
} }
if(dvisamplerX_dma_slot1_status_read() == DVISAMPLER_SLOT_PENDING) { if(dvisamplerX_dma_slot1_status_read() == DVISAMPLER_SLOT_PENDING) {
dvisamplerX_dma_slot1_address_write((unsigned int)dvisamplerX_framebuffers[dvisamplerX_fb_slot_indexes[1]]);
dvisamplerX_dma_slot1_status_write(DVISAMPLER_SLOT_LOADED);
}
return;
}
address_min = (unsigned int)dvisamplerX_framebuffers & 0x0fffffff;
address_max = address_min + sizeof(dvisamplerX_framebuffers);
if((dvisamplerX_dma_slot0_status_read() == DVISAMPLER_SLOT_PENDING)
&& ((dvisamplerX_dma_slot0_address_read() < address_min) || (dvisamplerX_dma_slot0_address_read() >= address_max)))
printf("dvisamplerX: stray DMA on slot 0\n");
if((dvisamplerX_dma_slot1_status_read() == DVISAMPLER_SLOT_PENDING)
&& ((dvisamplerX_dma_slot1_address_read() < address_min) || (dvisamplerX_dma_slot1_address_read() >= address_max)))
printf("dvisamplerX: stray DMA on slot 1\n");
expected_length = dvisamplerX_hres*dvisamplerX_vres*4;
if(dvisamplerX_dma_slot0_status_read() == DVISAMPLER_SLOT_PENDING) {
length = dvisamplerX_dma_slot0_address_read() - ((unsigned int)dvisamplerX_framebuffers[dvisamplerX_fb_slot_indexes[0]] & 0x0fffffff);
if(length == expected_length) {
fb_index = dvisamplerX_fb_slot_indexes[0];
dvisamplerX_fb_slot_indexes[0] = dvisamplerX_next_fb_index;
dvisamplerX_next_fb_index = (dvisamplerX_next_fb_index + 1) & FRAMEBUFFER_MASK;
} else
printf("dvisamplerX: slot0: unexpected frame length: %d\n", length);
dvisamplerX_dma_slot0_address_write((unsigned int)dvisamplerX_framebuffers[dvisamplerX_fb_slot_indexes[0]]);
dvisamplerX_dma_slot0_status_write(DVISAMPLER_SLOT_LOADED);
}
if(dvisamplerX_dma_slot1_status_read() == DVISAMPLER_SLOT_PENDING) {
length = dvisamplerX_dma_slot1_address_read() - ((unsigned int)dvisamplerX_framebuffers[dvisamplerX_fb_slot_indexes[1]] & 0x0fffffff);
if(length == expected_length) {
fb_index = dvisamplerX_fb_slot_indexes[1]; fb_index = dvisamplerX_fb_slot_indexes[1];
dvisamplerX_fb_slot_indexes[1] = dvisamplerX_next_fb_index; dvisamplerX_fb_slot_indexes[1] = dvisamplerX_next_fb_index;
dvisamplerX_dma_slot1_address_write((unsigned int)dvisamplerX_framebuffers[dvisamplerX_next_fb_index]);
dvisamplerX_dma_slot1_status_write(DVISAMPLER_SLOT_LOADED);
dvisamplerX_next_fb_index = (dvisamplerX_next_fb_index + 1) & FRAMEBUFFER_MASK; dvisamplerX_next_fb_index = (dvisamplerX_next_fb_index + 1) & FRAMEBUFFER_MASK;
} else
printf("dvisamplerX: slot1: unexpected frame length: %d\n", length);
dvisamplerX_dma_slot1_address_write((unsigned int)dvisamplerX_framebuffers[dvisamplerX_fb_slot_indexes[1]]);
dvisamplerX_dma_slot1_status_write(DVISAMPLER_SLOT_LOADED);
} }
if(fb_index != -1) if(fb_index != -1)
@ -50,13 +86,15 @@ void dvisamplerX_init_video(int hres, int vres)
dvisamplerX_clocking_pll_reset_write(1); dvisamplerX_clocking_pll_reset_write(1);
dvisamplerX_connected = dvisamplerX_locked = 0; dvisamplerX_connected = dvisamplerX_locked = 0;
dvisamplerX_hres = hres; dvisamplerX_vres = vres;
dvisamplerX_dma_ev_pending_write(dvisamplerX_dma_ev_pending_read());
dvisamplerX_dma_ev_enable_write(0x3);
mask = irq_getmask(); mask = irq_getmask();
mask |= 1 << DVISAMPLERX_INTERRUPT; mask &= ~(1 << DVISAMPLERX_INTERRUPT);
irq_setmask(mask); irq_setmask(mask);
dvisamplerX_dma_slot0_status_write(DVISAMPLER_SLOT_EMPTY);
dvisamplerX_dma_slot1_status_write(DVISAMPLER_SLOT_EMPTY);
dvisamplerX_dma_frame_size_write(hres*vres*4); dvisamplerX_dma_frame_size_write(hres*vres*4);
dvisamplerX_fb_slot_indexes[0] = 0; dvisamplerX_fb_slot_indexes[0] = 0;
dvisamplerX_dma_slot0_address_write((unsigned int)dvisamplerX_framebuffers[0]); dvisamplerX_dma_slot0_address_write((unsigned int)dvisamplerX_framebuffers[0]);
@ -66,6 +104,11 @@ void dvisamplerX_init_video(int hres, int vres)
dvisamplerX_dma_slot1_status_write(DVISAMPLER_SLOT_LOADED); dvisamplerX_dma_slot1_status_write(DVISAMPLER_SLOT_LOADED);
dvisamplerX_next_fb_index = 2; dvisamplerX_next_fb_index = 2;
dvisamplerX_dma_ev_pending_write(dvisamplerX_dma_ev_pending_read());
dvisamplerX_dma_ev_enable_write(0x3);
mask |= 1 << DVISAMPLERX_INTERRUPT;
irq_setmask(mask);
fb_dmaX_base_write((unsigned int)dvisamplerX_framebuffers[3]); fb_dmaX_base_write((unsigned int)dvisamplerX_framebuffers[3]);
} }