[QP] Native palette support for fonts (#20645)
Co-authored-by: Joel Challis <git@zvecr.com>
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cf162f90fe
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3a0f11a661
4 changed files with 49 additions and 36 deletions
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@ -92,4 +92,9 @@ typedef struct qp_internal_byte_output_state_t {
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bool qp_internal_byte_appender(uint8_t byteval, void* cb_arg);
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// Helper shared between image and font rendering, sends pixels to the display using:
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// - qp_internal_decode_palette + qp_internal_pixel_appender (bpp <= 8)
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// - qp_internal_send_bytes (bpp > 8)
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bool qp_internal_appender(painter_device_t device, uint8_t bpp, uint32_t pixel_count, qp_internal_byte_input_callback input_callback, void* input_state);
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qp_internal_byte_input_callback qp_internal_prepare_input_state(qp_internal_byte_input_state_t* input_state, painter_compression_t compression);
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@ -1,4 +1,5 @@
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// Copyright 2021 Nick Brassel (@tzarc)
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// Copyright 2023 Pablo Martinez (@elpekenin) <elpekenin@elpekenin.dev>
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// SPDX-License-Identifier: GPL-2.0-or-later
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#include "qp_internal.h"
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@ -164,6 +165,45 @@ bool qp_internal_byte_appender(uint8_t byteval, void* cb_arg) {
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return true;
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}
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// Helper shared between image and font rendering -- uses either (qp_internal_decode_palette + qp_internal_pixel_appender) or (qp_internal_send_bytes) to send data data to the display based on the asset's native-ness
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bool qp_internal_appender(painter_device_t device, uint8_t bpp, uint32_t pixel_count, qp_internal_byte_input_callback input_callback, void* input_state) {
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painter_driver_t* driver = (painter_driver_t*)device;
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bool ret = false;
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// Non-native pixel format
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if (bpp <= 8) {
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// Set up the output state
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qp_internal_pixel_output_state_t 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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ret = qp_internal_decode_palette(device, pixel_count, 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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}
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// Native pixel format
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else if (bpp != driver->native_bits_per_pixel) {
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qp_dprintf("Asset's bpp (%d) doesn't match the target display's native_bits_per_pixel (%d)\n", bpp, driver->native_bits_per_pixel);
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return false;
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} else {
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// Set up the output state
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qp_internal_byte_output_state_t 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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// Stream the raw pixel data to the display
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uint32_t byte_count = pixel_count * 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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return ret;
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}
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qp_internal_byte_input_callback qp_internal_prepare_input_state(qp_internal_byte_input_state_t* input_state, painter_compression_t compression) {
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switch (compression) {
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case IMAGE_UNCOMPRESSED:
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@ -263,33 +263,8 @@ 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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bool ret = false;
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if (!frame_info->is_panel_native) {
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// Set up the output state
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qp_internal_pixel_output_state_t 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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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 if (frame_info->bpp != driver->native_bits_per_pixel) {
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// Prevent stuff like drawing 24bpp images on 16bpp displays
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qp_dprintf("Image's bpp doesn't match the target display's native_bits_per_pixel\n");
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return false;
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} else {
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// Set up the output state
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qp_internal_byte_output_state_t 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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// 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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// Decode and stream pixels
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bool ret = qp_internal_appender(device, frame_info->bpp, pixel_count, input_callback, &input_state);
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qp_dprintf("qp_drawimage_recolor: %s\n", ret ? "ok" : "fail");
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qp_comms_stop(device);
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@ -364,16 +364,9 @@ static inline bool qp_font_code_point_handler_drawglyph(qff_font_handle_t *qff_f
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// Move the x-position for the next glyph
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state->xpos += width;
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// Decode the pixel data for the glyph
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// Decode the pixel data for the glyph, and stream it
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uint32_t pixel_count = ((uint32_t)width) * height;
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bool ret = qp_internal_decode_palette(state->device, pixel_count, qff_font->bpp, state->input_callback, state->input_state, qp_internal_global_pixel_lookup_table, qp_internal_pixel_appender, state->output_state);
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// Any leftovers need transmission as well.
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if (ret && state->output_state->pixel_write_pos > 0) {
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ret &= driver->driver_vtable->pixdata(state->device, qp_internal_global_pixdata_buffer, state->output_state->pixel_write_pos);
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}
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return ret;
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return qp_internal_appender(state->device, qff_font->bpp, pixel_count, state->input_callback, state->input_state);
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}
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////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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