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feat(core): enable hw decoding of grayscale JPEGs

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This commit is contained in:
cepetr 2025-02-26 10:05:05 +01:00 committed by cepetr
parent 8302f70d2a
commit f5a51b0671
3 changed files with 63 additions and 1 deletions
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2
core/embed/gfx/bitblt/dma2d_bitblt.h
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@ -44,6 +44,7 @@ bool dma2d_rgb565_blend_mono8(const gfx_bitblt_t* bb);
bool dma2d_rgba8888_fill(const gfx_bitblt_t* bb);
bool dma2d_rgba8888_copy_mono4(const gfx_bitblt_t* bb);
bool dma2d_rgba8888_copy_mono8(const gfx_bitblt_t* bb);
bool dma2d_rgba8888_copy_rgb565(const gfx_bitblt_t* bb);
bool dma2d_rgba8888_copy_rgba8888(const gfx_bitblt_t* bb);
bool dma2d_rgba8888_blend_mono4(const gfx_bitblt_t* bb);
@ -53,4 +54,5 @@ bool dma2d_rgba8888_blend_mono8(const gfx_bitblt_t* bb);
bool dma2d_rgba8888_copy_ycbcr420(const gfx_bitblt_t* bb);
bool dma2d_rgba8888_copy_ycbcr422(const gfx_bitblt_t* bb);
bool dma2d_rgba8888_copy_ycbcr444(const gfx_bitblt_t* bb);
bool dma2d_rgba8888_copy_y(const gfx_bitblt_t* bb);
#endif

59
core/embed/gfx/bitblt/stm32/dma2d_bitblt.c
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@ -763,6 +763,37 @@ bool dma2d_rgba8888_blend_mono8(const gfx_bitblt_t* bb) {
return true;
}
bool dma2d_rgba8888_copy_mono8(const gfx_bitblt_t* bb) {
dma2d_driver_t* drv = &g_dma2d_driver;
if (!drv->initialized) {
return false;
}
dma2d_wait();
if (!dma2d_accessible(bb->dst_row) || !dma2d_accessible(bb->src_row)) {
return false;
}
drv->handle.Init.ColorMode = DMA2D_OUTPUT_ARGB8888;
drv->handle.Init.Mode = DMA2D_M2M_PFC;
drv->handle.Init.OutputOffset = bb->dst_stride / sizeof(uint32_t) - bb->width;
HAL_DMA2D_Init(&drv->handle);
drv->handle.LayerCfg[1].InputColorMode = DMA2D_INPUT_A8;
drv->handle.LayerCfg[1].InputOffset = bb->src_stride - bb->width;
drv->handle.LayerCfg[1].AlphaMode = 0;
drv->handle.LayerCfg[1].InputAlpha = gfx_color_to_color32(bb->src_fg);
HAL_DMA2D_ConfigLayer(&drv->handle, 1);
HAL_DMA2D_Start(&drv->handle, (uint32_t)bb->src_row + bb->src_x,
(uint32_t)bb->dst_row + bb->dst_x * sizeof(uint32_t),
bb->width, bb->height);
return true;
}
bool dma2d_rgba8888_copy_rgba8888(const gfx_bitblt_t* bb) {
dma2d_driver_t* drv = &g_dma2d_driver;
@ -848,6 +879,34 @@ bool dma2d_rgba8888_copy_ycbcr444(const gfx_bitblt_t* bb) {
return dma2d_rgba8888_copy_ycbcr(bb, DMA2D_NO_CSS);
}
bool dma2d_rgba8888_copy_y(const gfx_bitblt_t* bb) {
gfx_bitblt_t bb_copy = *bb;
if (bb->height % 8 != 0 || bb->width % 8 != 0) {
return false;
}
// src cotains only Y channel organized in 8x8 blocks
bb_copy.height = 8;
bb_copy.width = 8;
bb_copy.src_stride = 8;
bb_copy.src_fg = gfx_color_rgb(255, 255, 255);
for (uint16_t y = 0; y < bb->height; y += 8) {
bb_copy.dst_x = 0;
for (uint16_t x = 0; x < bb->width; x += 8) {
if (!dma2d_rgba8888_copy_mono8(&bb_copy)) {
return false;
}
bb_copy.dst_x += 8;
bb_copy.src_row = (uint8_t*)bb_copy.src_row + 64;
}
bb_copy.dst_y += 8;
}
return true;
}
// Temporary hack to invalidate CLUT cache used in jpeg decoder.
// This function should be removed in the future with DMA2D syscalls.
void dma2d_invalidate_clut(void) {

3
core/embed/gfx/jpegdec/stm32u5/jpegdec.c
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@ -456,7 +456,8 @@ bool jpegdec_get_slice_rgba8888(uint32_t *rgba8888, jpegdec_slice_t *slice) {
result = dma2d_rgba8888_copy_ycbcr444(&bb);
break;
case JPEGDEC_IMAGE_GRAYSCALE:
// Conversion from grayscale to RGBA8888 is not supported
result = dma2d_rgba8888_copy_y(&bb);
break;
default:
result = false;
break;