diff options
Diffstat (limited to 'quantum/painter/qp_draw_codec.c')
| -rw-r--r-- | quantum/painter/qp_draw_codec.c | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/quantum/painter/qp_draw_codec.c b/quantum/painter/qp_draw_codec.c index cee2e32e28..4ff41d0650 100644 --- a/quantum/painter/qp_draw_codec.c +++ b/quantum/painter/qp_draw_codec.c @@ -1,4 +1,5 @@ // Copyright 2021 Nick Brassel (@tzarc) +// Copyright 2023 Pablo Martinez (@elpekenin) <elpekenin@elpekenin.dev> // SPDX-License-Identifier: GPL-2.0-or-later #include "qp_internal.h" @@ -164,6 +165,45 @@ bool qp_internal_byte_appender(uint8_t byteval, void* cb_arg) { return true; } +// 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 +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) { + painter_driver_t* driver = (painter_driver_t*)device; + + bool ret = false; + + // Non-native pixel format + if (bpp <= 8) { + // Set up the output state + qp_internal_pixel_output_state_t output_state = {.device = device, .pixel_write_pos = 0, .max_pixels = qp_internal_num_pixels_in_buffer(device)}; + + // Decode the pixel data and stream to the display + 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); + // Any leftovers need transmission as well. + if (ret && output_state.pixel_write_pos > 0) { + ret &= driver->driver_vtable->pixdata(device, qp_internal_global_pixdata_buffer, output_state.pixel_write_pos); + } + } + + // Native pixel format + else if (bpp != driver->native_bits_per_pixel) { + 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); + return false; + } else { + // Set up the output state + 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}; + + // Stream the raw pixel data to the display + uint32_t byte_count = pixel_count * bpp / 8; + ret = qp_internal_send_bytes(device, byte_count, input_callback, input_state, qp_internal_byte_appender, &output_state); + // Any leftovers need transmission as well. + if (ret && output_state.byte_write_pos > 0) { + ret &= driver->driver_vtable->pixdata(device, qp_internal_global_pixdata_buffer, output_state.byte_write_pos * 8 / driver->native_bits_per_pixel); + } + } + + return ret; +} + qp_internal_byte_input_callback qp_internal_prepare_input_state(qp_internal_byte_input_state_t* input_state, painter_compression_t compression) { switch (compression) { case IMAGE_UNCOMPRESSED: |