void frame_show(struct frame_t *frame)
{
static int disp_initialized = 0;
static int frame_id = 0;
if (!disp_initialized)
{
if (!disp_open())
{
fprintf(stderr, "Can't open /dev/disp\n");
return;
}
disp_set_para(ve_virt2phys(frame->luma_buffer), ve_virt2phys(frame->chroma_buffer),
frame->color, frame->width, frame->height,
0, 0, 800, 600);
disp_initialized = 1;
}
disp_new_frame(ve_virt2phys(frame->luma_buffer), ve_virt2phys(frame->chroma_buffer),
frame_id++, 24000);
}
void decode_jpeg(struct jpeg_t *jpeg)
{
if (!ve_open())
err(EXIT_FAILURE, "Can't open VE");
int input_size =(jpeg->data_len + 65535) & ~65535;
uint8_t *input_buffer = ve_malloc(input_size);
int output_size = ((jpeg->width + 31) & ~31) * ((jpeg->height + 31) & ~31);
uint8_t *luma_output = ve_malloc(output_size);
uint8_t *chroma_output = ve_malloc(output_size);
memcpy(input_buffer, jpeg->data, jpeg->data_len);
ve_flush_cache(input_buffer, jpeg->data_len);
// activate MPEG engine
void *ve_regs = ve_get(VE_ENGINE_MPEG, 0);
// set restart interval
writel(jpeg->restart_interval, ve_regs + VE_MPEG_JPEG_RES_INT);
// set JPEG format
set_format(jpeg, ve_regs);
// set output buffers (Luma / Croma)
writel(ve_virt2phys(luma_output), ve_regs + VE_MPEG_ROT_LUMA);
writel(ve_virt2phys(chroma_output), ve_regs + VE_MPEG_ROT_CHROMA);
// set size
set_size(jpeg, ve_regs);
// ??
writel(0x00000000, ve_regs + VE_MPEG_SDROT_CTRL);
// input end
writel(ve_virt2phys(input_buffer) + input_size - 1, ve_regs + VE_MPEG_VLD_END);
// ??
writel(0x0000007c, ve_regs + VE_MPEG_CTRL);
// set input offset in bits
writel(0 * 8, ve_regs + VE_MPEG_VLD_OFFSET);
// set input length in bits
writel(jpeg->data_len * 8, ve_regs + VE_MPEG_VLD_LEN);
// set input buffer
writel(ve_virt2phys(input_buffer) | 0x70000000, ve_regs + VE_MPEG_VLD_ADDR);
// set Quantisation Table
set_quantization_tables(jpeg, ve_regs);
// set Huffman Table
writel(0x00000000, ve_regs + VE_MPEG_RAM_WRITE_PTR);
set_huffman_tables(jpeg, ve_regs);
// start
writeb(0x0e, ve_regs + VE_MPEG_TRIGGER);
// wait for interrupt
ve_wait(1);
// clean interrupt flag (??)
writel(0x0000c00f, ve_regs + VE_MPEG_STATUS);
// stop MPEG engine
ve_put();
//output_ppm(stdout, jpeg, output, output + (output_buf_size / 2));
if (!disp_open())
{
fprintf(stderr, "Can't open /dev/disp\n");
return;
}
int color;
switch ((jpeg->comp[0].samp_h << 4) | jpeg->comp[0].samp_v)
{
case 0x11:
case 0x21:
color = COLOR_YUV422;
break;
case 0x12:
case 0x22:
default:
color = COLOR_YUV420;
break;
}
disp_set_para(ve_virt2phys(luma_output), ve_virt2phys(chroma_output),
color, jpeg->width, jpeg->height,
0, 0, 800, 600);
getchar();
disp_close();
ve_free(input_buffer);
ve_free(luma_output);
ve_free(chroma_output);
ve_close();
}
