Add RGB565 and RGB888 color support to Quantum Painter (#19382)
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					 21 changed files with 226 additions and 43 deletions
				
			
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			@ -38,11 +38,13 @@ bool qgf_parse_format(qp_image_format_t format, uint8_t *bpp, bool *has_palette)
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        [PALETTE_2BPP] = {.bpp = 2, .has_palette = true},
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        [PALETTE_4BPP] = {.bpp = 4, .has_palette = true},
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        [PALETTE_8BPP] = {.bpp = 8, .has_palette = true},
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        [RGB565_16BPP] = {.bpp = 16, .has_palette = false},
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        [RGB888_24BPP] = {.bpp = 24, .has_palette = false},
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    };
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    // clang-format on
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    // Copy out the required info
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    if (format > PALETTE_8BPP) {
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    if (format > RGB888_24BPP) {
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        qp_dprintf("Failed to parse frame_descriptor, invalid format 0x%02X\n", (int)format);
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        return false;
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    }
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			@ -12,7 +12,7 @@
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// Internal driver validation
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static bool validate_driver_vtable(struct painter_driver_t *driver) {
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    return (driver->driver_vtable && driver->driver_vtable->init && driver->driver_vtable->power && driver->driver_vtable->clear && driver->driver_vtable->viewport && driver->driver_vtable->pixdata && driver->driver_vtable->palette_convert && driver->driver_vtable->append_pixels) ? true : false;
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    return (driver->driver_vtable && driver->driver_vtable->init && driver->driver_vtable->power && driver->driver_vtable->clear && driver->driver_vtable->viewport && driver->driver_vtable->pixdata && driver->driver_vtable->palette_convert && driver->driver_vtable->append_pixels && driver->driver_vtable->append_pixdata) ? true : false;
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}
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static bool validate_comms_vtable(struct painter_driver_t *driver) {
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			@ -64,6 +64,14 @@
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#    define QUANTUM_PAINTER_SUPPORTS_256_PALETTE FALSE
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#endif
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#ifndef QUANTUM_PAINTER_SUPPORTS_NATIVE_COLORS
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/**
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 * @def This controls whether the native color range is supported. This avoids the use of palettes but each image
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 *      requires more storage space.
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 */
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#    define QUANTUM_PAINTER_SUPPORTS_NATIVE_COLORS FALSE
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#endif
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////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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// Quantum Painter types
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			@ -30,9 +30,11 @@ bool qp_internal_fillrect_helper_impl(painter_device_t device, uint16_t l, uint1
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// Convert from input pixel data + palette to equivalent pixels
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typedef int16_t (*qp_internal_byte_input_callback)(void* cb_arg);
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typedef bool (*qp_internal_pixel_output_callback)(qp_pixel_t* palette, uint8_t index, void* cb_arg);
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typedef bool (*qp_internal_byte_output_callback)(uint8_t byte, void* cb_arg);
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bool qp_internal_decode_palette(painter_device_t device, uint32_t pixel_count, uint8_t bits_per_pixel, qp_internal_byte_input_callback input_callback, void* input_arg, qp_pixel_t* palette, qp_internal_pixel_output_callback output_callback, void* output_arg);
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bool qp_internal_decode_grayscale(painter_device_t device, uint32_t pixel_count, uint8_t bits_per_pixel, qp_internal_byte_input_callback input_callback, void* input_arg, qp_internal_pixel_output_callback output_callback, void* output_arg);
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bool qp_internal_decode_recolor(painter_device_t device, uint32_t pixel_count, uint8_t bits_per_pixel, qp_internal_byte_input_callback input_callback, void* input_arg, qp_pixel_t fg_hsv888, qp_pixel_t bg_hsv888, qp_internal_pixel_output_callback output_callback, void* output_arg);
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bool qp_internal_send_bytes(painter_device_t device, uint32_t byte_count, qp_internal_byte_input_callback input_callback, void* input_arg, qp_internal_byte_output_callback output_callback, void* output_arg);
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// Global variable used for interpolated pixel lookup table.
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#if QUANTUM_PAINTER_SUPPORTS_256_PALETTE
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			@ -82,4 +84,12 @@ struct qp_internal_pixel_output_state {
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bool qp_internal_pixel_appender(qp_pixel_t* palette, uint8_t index, void* cb_arg);
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struct qp_internal_byte_output_state {
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    painter_device_t device;
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    uint32_t         byte_write_pos;
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    uint32_t         max_bytes;
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};
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bool qp_internal_byte_appender(uint8_t byteval, void* cb_arg);
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qp_internal_byte_input_callback qp_internal_prepare_input_state(struct qp_internal_byte_input_state* input_state, painter_compression_t compression);
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			@ -12,18 +12,19 @@ static const qp_pixel_t qp_pixel_white = {.hsv888 = {.h = 0, .s = 0, .v = 255}};
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static const qp_pixel_t qp_pixel_black = {.hsv888 = {.h = 0, .s = 0, .v = 0}};
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bool qp_internal_bpp_capable(uint8_t bits_per_pixel) {
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#if !(QUANTUM_PAINTER_SUPPORTS_256_PALETTE)
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#if !(QUANTUM_PAINTER_SUPPORTS_NATIVE_COLORS)
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#    if !(QUANTUM_PAINTER_SUPPORTS_256_PALETTE)
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    if (bits_per_pixel > 4) {
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        qp_dprintf("qp_internal_decode_palette: image bpp greater than 4\n");
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        return false;
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    }
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#endif
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#    endif
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    if (bits_per_pixel > 8) {
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        qp_dprintf("qp_internal_decode_palette: image bpp greater than 8\n");
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        return false;
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    }
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#endif
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    return true;
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}
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			@ -32,7 +33,7 @@ bool qp_internal_decode_palette(painter_device_t device, uint32_t pixel_count, u
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    const uint8_t pixels_per_byte  = 8 / bits_per_pixel;
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    uint32_t      remaining_pixels = pixel_count; // don't try to derive from byte_count, we may not use an entire byte
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    while (remaining_pixels > 0) {
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        uint8_t byteval = input_callback(input_arg);
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        int16_t byteval = input_callback(input_arg);
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        if (byteval < 0) {
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            return false;
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        }
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			@ -64,6 +65,21 @@ bool qp_internal_decode_recolor(painter_device_t device, uint32_t pixel_count, u
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    return qp_internal_decode_palette(device, pixel_count, bits_per_pixel, input_callback, input_arg, qp_internal_global_pixel_lookup_table, output_callback, output_arg);
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}
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bool qp_internal_send_bytes(painter_device_t device, uint32_t byte_count, qp_internal_byte_input_callback input_callback, void* input_arg, qp_internal_byte_output_callback output_callback, void* output_arg) {
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    uint32_t remaining_bytes = byte_count;
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    while (remaining_bytes > 0) {
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        int16_t byteval = input_callback(input_arg);
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        if (byteval < 0) {
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            return false;
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        }
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        if (!output_callback(byteval, output_arg)) {
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            return false;
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        }
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        remaining_bytes -= 1;
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    }
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    return true;
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}
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////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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// Progressive pull of bytes, push of pixels
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			@ -128,6 +144,26 @@ bool qp_internal_pixel_appender(qp_pixel_t* palette, uint8_t index, void* cb_arg
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    return true;
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}
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bool qp_internal_byte_appender(uint8_t byteval, void* cb_arg) {
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    struct qp_internal_byte_output_state* state  = (struct qp_internal_byte_output_state*)cb_arg;
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    struct painter_driver_t*              driver = (struct painter_driver_t*)state->device;
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    if (!driver->driver_vtable->append_pixdata(state->device, qp_internal_global_pixdata_buffer, state->byte_write_pos++, byteval)) {
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        return false;
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    }
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    // If we've hit the transmit limit, send out the entire buffer and reset the write position
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    if (state->byte_write_pos == state->max_bytes) {
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        struct painter_driver_t* driver = (struct painter_driver_t*)state->device;
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        if (!driver->driver_vtable->pixdata(state->device, qp_internal_global_pixdata_buffer, state->byte_write_pos * 8 / driver->native_bits_per_pixel)) {
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            return false;
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        }
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        state->byte_write_pos = 0;
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    }
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    return true;
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}
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qp_internal_byte_input_callback qp_internal_prepare_input_state(struct qp_internal_byte_input_state* input_state, painter_compression_t compression) {
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    switch (compression) {
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        case IMAGE_UNCOMPRESSED:
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			@ -151,7 +151,7 @@ static bool qp_drawimage_prepare_frame_for_stream_read(painter_device_t device,
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    qp_internal_invalidate_palette();
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    if (!qp_internal_bpp_capable(info->bpp)) {
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        qp_dprintf("qp_drawimage_recolor: fail (image bpp too high (%d), check QUANTUM_PAINTER_SUPPORTS_256_PALETTE)\n", (int)info->bpp);
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        qp_dprintf("qp_drawimage_recolor: fail (image bpp too high (%d), check QUANTUM_PAINTER_SUPPORTS_256_PALETTE or QUANTUM_PAINTER_SUPPORTS_NATIVE_COLORS)\n", (int)info->bpp);
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        qp_comms_stop(device);
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        return false;
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    }
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			@ -167,8 +167,10 @@ static bool qp_drawimage_prepare_frame_for_stream_read(painter_device_t device,
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        needs_pixconvert = true;
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    } else {
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        // Interpolate from fg/bg
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        needs_pixconvert = qp_internal_interpolate_palette(fg_hsv888, bg_hsv888, palette_entries);
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        if (info->bpp <= 8) {
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            // Interpolate from fg/bg
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            needs_pixconvert = qp_internal_interpolate_palette(fg_hsv888, bg_hsv888, palette_entries);
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        }
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    }
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    if (needs_pixconvert) {
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			@ -260,15 +262,28 @@ static bool qp_drawimage_recolor_impl(painter_device_t device, uint16_t x, uint1
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        return false;
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    }
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    // Set up the output state
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    struct qp_internal_pixel_output_state output_state = {.device = device, .pixel_write_pos = 0, .max_pixels = qp_internal_num_pixels_in_buffer(device)};
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    bool ret = false;
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    if (frame_info->bpp <= 8) {
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        // Set up the output state
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        struct qp_internal_pixel_output_state output_state = {.device = device, .pixel_write_pos = 0, .max_pixels = qp_internal_num_pixels_in_buffer(device)};
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    // Decode the pixel data and stream to the display
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    bool ret = qp_internal_decode_palette(device, pixel_count, frame_info->bpp, input_callback, &input_state, qp_internal_global_pixel_lookup_table, qp_internal_pixel_appender, &output_state);
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        // Decode the pixel data and stream to the display
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        ret = qp_internal_decode_palette(device, pixel_count, frame_info->bpp, input_callback, &input_state, qp_internal_global_pixel_lookup_table, qp_internal_pixel_appender, &output_state);
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        // Any leftovers need transmission as well.
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        if (ret && output_state.pixel_write_pos > 0) {
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            ret &= driver->driver_vtable->pixdata(device, qp_internal_global_pixdata_buffer, output_state.pixel_write_pos);
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        }
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    } else {
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        // Set up the output state
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        struct qp_internal_byte_output_state output_state = {.device = device, .byte_write_pos = 0, .max_bytes = qp_internal_num_pixels_in_buffer(device) * driver->native_bits_per_pixel / 8};
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    // Any leftovers need transmission as well.
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    if (ret && output_state.pixel_write_pos > 0) {
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        ret &= driver->driver_vtable->pixdata(device, qp_internal_global_pixdata_buffer, output_state.pixel_write_pos);
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        // Stream the raw pixel data to the display
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        uint32_t byte_count = pixel_count * frame_info->bpp / 8;
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        ret                 = qp_internal_send_bytes(device, byte_count, input_callback, &input_state, qp_internal_byte_appender, &output_state);
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        // Any leftovers need transmission as well.
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        if (ret && output_state.byte_write_pos > 0) {
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            ret &= driver->driver_vtable->pixdata(device, qp_internal_global_pixdata_buffer, output_state.byte_write_pos * 8 / driver->native_bits_per_pixel);
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        }
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    }
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    qp_dprintf("qp_drawimage_recolor: %s\n", ret ? "ok" : "fail");
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			@ -100,7 +100,7 @@ static painter_font_handle_t qp_load_font_internal(bool (*stream_factory)(qff_fo
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    qff_read_font_descriptor(&font->stream, &font->base.line_height, &font->has_ascii_table, &font->num_unicode_glyphs, &font->bpp, &font->has_palette, &font->compression_scheme, NULL);
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    if (!qp_internal_bpp_capable(font->bpp)) {
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        qp_dprintf("qp_load_font: fail (image bpp too high (%d), check QUANTUM_PAINTER_SUPPORTS_256_PALETTE)\n", (int)font->bpp);
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        qp_dprintf("qp_load_font: fail (image bpp too high (%d), check QUANTUM_PAINTER_SUPPORTS_256_PALETTE or QUANTUM_PAINTER_SUPPORTS_NATIVE_COLORS)\n", (int)font->bpp);
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        qp_close_font((painter_font_handle_t)font);
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        return NULL;
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    }
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			@ -16,6 +16,7 @@ typedef bool (*painter_driver_viewport_func)(painter_device_t device, uint16_t l
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typedef bool (*painter_driver_pixdata_func)(painter_device_t device, const void *pixel_data, uint32_t native_pixel_count);
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typedef bool (*painter_driver_convert_palette_func)(painter_device_t device, int16_t palette_size, qp_pixel_t *palette);
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typedef bool (*painter_driver_append_pixels)(painter_device_t device, uint8_t *target_buffer, qp_pixel_t *palette, uint32_t pixel_offset, uint32_t pixel_count, uint8_t *palette_indices);
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typedef bool (*painter_driver_append_pixdata)(painter_device_t device, uint8_t *target_buffer, uint32_t pixdata_offset, uint8_t pixdata_byte);
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// Driver vtable definition
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struct painter_driver_vtable_t {
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			@ -27,6 +28,7 @@ struct painter_driver_vtable_t {
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    painter_driver_pixdata_func         pixdata;
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    painter_driver_convert_palette_func palette_convert;
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    painter_driver_append_pixels        append_pixels;
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    painter_driver_append_pixdata       append_pixdata;
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};
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////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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			@ -44,6 +44,8 @@ typedef enum qp_image_format_t {
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    PALETTE_2BPP   = 0x05,
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    PALETTE_4BPP   = 0x06,
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    PALETTE_8BPP   = 0x07,
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    RGB565_16BPP   = 0x08,
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    RGB888_24BPP   = 0x09,
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} qp_image_format_t;
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typedef enum painter_compression_t { IMAGE_UNCOMPRESSED, IMAGE_COMPRESSED_RLE } painter_compression_t;
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