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ports/mimxrt: Use the new framebuffer API.
Signed-off-by: iabdalkader <i.abdalkader@gmail.com>
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@ -130,13 +130,13 @@ void omv_csi_sof_callback(omv_csi_t *csi) {
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csi->drop_frame = false;
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// Get current framebuffer.
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vbuffer_t *buffer = framebuffer_get_tail(csi->fb, FB_PEEK);
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vbuffer_t *buffer = framebuffer_acquire(csi->fb, FB_FLAG_FREE | FB_FLAG_PEEK);
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if (buffer == NULL) {
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omv_csi_abort(csi, false, true);
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} else if (buffer->offset < resolution[csi->framesize][1]) {
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// Missed a few lines, reset buffer state and continue.
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buffer->reset_state = true;
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framebuffer_reset(buffer);
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}
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}
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@ -190,30 +190,23 @@ void omv_csi_line_callback(omv_csi_t *csi, uint32_t addr) {
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omv_csi_throttle_framerate(csi);
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// Get current framebuffer.
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vbuffer_t *buffer = framebuffer_get_tail(fb, FB_PEEK);
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vbuffer_t *buffer = framebuffer_acquire(fb, FB_FLAG_FREE | FB_FLAG_PEEK);
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if (csi->pixformat == PIXFORMAT_JPEG) {
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bool jpeg_end = false;
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if (csi->drop_frame) {
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return;
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}
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bool jpeg_end = false;
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if (csi->jpg_format == 4) {
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// JPEG MODE 4:
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//
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// The width and height are fixed in each frame. The first two bytes are valid data
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// length in every line, followed by valid image data. Dummy data (0xFF) may be used as
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// padding at each line end if the current valid image data is less than the line width.
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//
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// In this mode `offset` holds the size of all jpeg data transferred.
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//
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// Note: We are using this mode for the OV5640 because it allows us to use the line
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// buffers to fifo the JPEG image data input so we can handle SDRAM refresh hiccups
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// that will cause data loss if we make the DMA hardware write directly to the FB.
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//
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// JPEG MODE 4: Fixed width and height per frame. Each line starts
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// with two bytes indicating valid data length, followed by image
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// data and optional padding (0xFF). `offset` holds the total size.
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uint16_t size = __REV16(*((uint16_t *) addr));
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// Prevent a buffer overflow when writing the jpeg data.
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if (buffer->offset + size > framebuffer_get_buffer_size(fb)) {
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buffer->jpeg_buffer_overflow = true;
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buffer->flags |= VB_FLAG_OVERFLOW;
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jpeg_end = true;
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} else {
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unaligned_memcpy(buffer->data + buffer->offset, ((uint16_t *) addr) + 1, size);
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@ -230,12 +223,13 @@ void omv_csi_line_callback(omv_csi_t *csi, uint32_t addr) {
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} else if (csi->jpg_format == 3) {
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// OV2640 JPEG TODO
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}
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// In JPEG mode the camera sensor will output some number of lines that doesn't match the
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// the current framesize. Since we don't have an end-of-frame interrupt on the mimxrt we
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// detect the end of the frame when there's no more jpeg data.
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// In JPEG mode, the camera will output a number of lines that doesn't
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// match the current frame size. Since we don't have an end-of-frame
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// interrupt on the MIMXRT, the frame ends when there's no more data.
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if (jpeg_end) {
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// Release the current framebuffer.
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framebuffer_get_tail(fb, FB_NO_FLAGS);
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framebuffer_release(fb, FB_FLAG_FREE | FB_FLAG_CHECK_LAST);
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CSI_REG_CR3(CSI) &= ~CSI_CR3_DMA_REQ_EN_RFF_MASK;
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if (csi->frame_cb.fun) {
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csi->frame_cb.fun(csi->frame_cb.arg);
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@ -282,7 +276,7 @@ void omv_csi_line_callback(omv_csi_t *csi, uint32_t addr) {
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if (++buffer->offset == resolution[csi->framesize][1]) {
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// Release the current framebuffer.
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framebuffer_get_tail(fb, FB_NO_FLAGS);
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framebuffer_release(fb, FB_FLAG_FREE | FB_FLAG_CHECK_LAST);
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CSI_REG_CR3(CSI) &= ~CSI_CR3_DMA_REQ_EN_RFF_MASK;
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if (csi->frame_cb.fun) {
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csi->frame_cb.fun(csi->frame_cb.arg);
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@ -332,41 +326,15 @@ static void edma_config(omv_csi_t *csi, uint32_t bytes_per_pixel) {
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#endif
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int imx_csi_snapshot(omv_csi_t *csi, image_t *image, uint32_t flags) {
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vbuffer_t *buffer = NULL;
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framebuffer_t *fb = csi->fb;
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// Used to restore the frame buffer width and height.
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uint32_t w = fb->u;
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uint32_t h = fb->v;
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if (csi->pixformat == PIXFORMAT_INVALID) {
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return OMV_CSI_ERROR_INVALID_PIXFORMAT;
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}
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if (csi->framesize == OMV_CSI_FRAMESIZE_INVALID) {
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return OMV_CSI_ERROR_INVALID_FRAMESIZE;
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}
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if (omv_csi_check_framebuffer_size(csi) != 0) {
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return OMV_CSI_ERROR_FRAMEBUFFER_OVERFLOW;
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}
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// Compress the framebuffer for the IDE preview.
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if (flags & OMV_CSI_CAPTURE_FLAGS_UPDATE) {
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image_t tmp;
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framebuffer_init_image(fb, &tmp);
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framebuffer_update_jpeg_buffer(&tmp);
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}
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// Free the current FB head.
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framebuffer_free_current_buffer(fb);
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// If the DMA is not active, reconfigure and restart the CSI transfer.
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if (!(CSI->CR18 & CSI_CR18_CSI_ENABLE_MASK)) {
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framebuffer_setup_buffers(fb);
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// Configure and re/start the capture if it's not alrady active
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// and there are no pending buffers (from non-blocking capture).
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if (!(CSI->CR18 & CSI_CR18_CSI_ENABLE_MASK) && !framebuffer_readable(fb)) {
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uint32_t bytes_per_pixel = omv_csi_get_src_bpp(csi);
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uint32_t dma_line_bytes = resolution[csi->framesize][0] * bytes_per_pixel;
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uint32_t length = dma_line_bytes * h;
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uint32_t length = dma_line_bytes * fb->v;
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// Error out if the transfer size is not compatible with DMA transfer restrictions.
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if ((!dma_line_bytes)
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@ -411,61 +379,41 @@ int imx_csi_snapshot(omv_csi_t *csi, image_t *image, uint32_t flags) {
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CSI_REG_CR18(CSI) |= CSI_CR18_CSI_ENABLE_MASK;
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}
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// Let the camera know we want to trigger it now.
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#if defined(OMV_CSI_FSYNC_PIN)
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if (csi->frame_sync) {
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omv_gpio_write(OMV_CSI_FSYNC_PIN, 1);
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}
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#endif
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framebuffer_flags_t fb_flags = FB_NO_FLAGS;
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framebuffer_flags_t fb_flags = FB_FLAG_USED | FB_FLAG_PEEK;
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#if defined(OMV_CSI_DMA)
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// dest_inc will be less than MIN_EDMA_DST_INC if the EDMA is not initialized or unusable.
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// If the EDMA is used, the transfers must be invalidated.
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if (csi->dest_inc >= MIN_EDMA_DST_INC) {
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fb_flags = FB_INVALIDATE;
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fb_flags |= FB_FLAG_INVALIDATE;
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}
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#endif
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vbuffer_t *buffer = framebuffer_get_head(fb, fb_flags);
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// Wait for the DMA to finish the transfer.
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for (mp_uint_t ticks = mp_hal_ticks_ms(); buffer == NULL;) {
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MICROPY_EVENT_POLL_HOOK
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if ((mp_hal_ticks_ms() - ticks) > OMV_CSI_TIMEOUT_MS) {
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// Wait for a frame to be ready.
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for (mp_uint_t start = mp_hal_ticks_ms(); ; mp_event_handle_nowait()) {
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if ((buffer = framebuffer_acquire(fb, fb_flags))) {
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break;
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}
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if (flags & OMV_CSI_CAPTURE_FLAGS_NBLOCK) {
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return OMV_CSI_ERROR_WOULD_BLOCK;
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}
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if ((mp_hal_ticks_ms() - start) > OMV_CSI_TIMEOUT_MS) {
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omv_csi_abort(csi, true, false);
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#if defined(OMV_CSI_FSYNC_PIN)
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if (csi->frame_sync) {
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omv_gpio_write(OMV_CSI_FSYNC_PIN, 0);
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}
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#endif
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return OMV_CSI_ERROR_CAPTURE_TIMEOUT;
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}
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buffer = framebuffer_get_head(fb, fb_flags);
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}
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// We're done receiving data.
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#if defined(OMV_CSI_FSYNC_PIN)
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if (csi->frame_sync) {
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omv_gpio_write(OMV_CSI_FSYNC_PIN, 0);
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}
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#endif
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// The JPEG in the frame buffer is actually invalid.
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if (buffer->jpeg_buffer_overflow) {
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if (buffer->flags & VB_FLAG_OVERFLOW) {
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return OMV_CSI_ERROR_JPEG_OVERFLOW;
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}
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if (!csi->transpose) {
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fb->w = w;
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fb->h = h;
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} else {
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fb->w = h;
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fb->h = w;
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}
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// Set the framebuffer width/height.
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fb->w = csi->transpose ? fb->v : fb->u;
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fb->h = csi->transpose ? fb->u : fb->v;
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// Fix the BPP.
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// Set the framebuffer pixel format.
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switch (csi->pixformat) {
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case PIXFORMAT_GRAYSCALE:
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fb->pixfmt = PIXFORMAT_GRAYSCALE;
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@ -31,7 +31,7 @@ ROMFS_IMAGE := $(FW_DIR)/romfs.stamp
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ROMFS_CONFIG := $(OMV_BOARD_CONFIG_DIR)/romfs.json
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# Compiler Flags
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CFLAGS += -std=gnu99 \
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CFLAGS += -std=gnu11 \
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-Wall \
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-Werror \
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-Warray-bounds \
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@ -83,6 +83,7 @@ LDFLAGS = -mthumb \
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-Wl,-T$(BUILD)/$(LDSCRIPT).lds \
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-Wl,-Map=$(BUILD)/$(FIRMWARE).map
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OMV_CFLAGS += -I$(TOP_DIR)
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OMV_CFLAGS += -I$(TOP_DIR)/$(COMMON_DIR)
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OMV_CFLAGS += -I$(TOP_DIR)/modules
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OMV_CFLAGS += -I$(TOP_DIR)/ports/$(PORT)
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