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Prepare for display orientation part 1 (#2661)

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Totoo
2025-05-22 17:24:53 +02:00
committed by GitHub
parent 6f6d863a14
commit a1d7cf2b86
85 changed files with 405 additions and 334 deletions
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firmware/common/png_writer.cpp
+55 -1
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@@ -63,7 +63,32 @@ Optional<File::Error> PNGWriter::create(
}
file.write(png_file_header);
file.write(png_ihdr_screen_capture);
// ihdr dynamic
std::array<uint8_t, 25> png_ihdr_dyn;
for (uint8_t i = 0; i < 25; i++) {
png_ihdr_dyn[i] = png_ihdr_screen_capture[i];
}
// Write width (4 bytes big-endian)
png_ihdr_dyn[8] = (width >> 24) & 0xFF;
png_ihdr_dyn[9] = (width >> 16) & 0xFF;
png_ihdr_dyn[10] = (width >> 8) & 0xFF;
png_ihdr_dyn[11] = width & 0xFF;
// Write height (4 bytes big-endian)
png_ihdr_dyn[12] = (height >> 24) & 0xFF;
png_ihdr_dyn[13] = (height >> 16) & 0xFF;
png_ihdr_dyn[14] = (height >> 8) & 0xFF;
png_ihdr_dyn[15] = height & 0xFF;
crc.reset();
crc.process_bytes(png_ihdr_dyn.data(), 25);
uint32_t crci = crc.checksum();
png_ihdr_dyn[21] = (crci >> 24) & 0xFF;
png_ihdr_dyn[22] = (crci >> 16) & 0xFF;
png_ihdr_dyn[23] = (crci >> 8) & 0xFF;
png_ihdr_dyn[24] = crci & 0xFF;
file.write(png_ihdr_dyn);
write_chunk_header(
2 + height * (5 + 1 + width * 3) + 4,
@@ -108,6 +133,35 @@ void PNGWriter::write_scanline(const std::array<ui::ColorRGB888, 240>& scanline)
scanline_count++;
}
void PNGWriter::write_scanline(const std::vector<ui::ColorRGB888>& scanline) {
constexpr uint8_t scanline_filter_type = 0;
// Total block length = 1 filter byte + scanline byte length
const uint32_t deflate_block_length = 1 + static_cast<uint32_t>(scanline.size() * sizeof(ui::ColorRGB888));
const std::array<uint8_t, 6> deflate_and_scanline_header{
static_cast<uint8_t>((scanline_count == (height - 1)) ? 0x01 : 0x00), // Final block?
static_cast<uint8_t>(deflate_block_length & 0xff), // Length LSB
static_cast<uint8_t>((deflate_block_length >> 8) & 0xff), // Length MSB
static_cast<uint8_t>((deflate_block_length & 0xff) ^ 0xff), // ~Length LSB
static_cast<uint8_t>(((deflate_block_length >> 8) & 0xff) ^ 0xff), // ~Length MSB
scanline_filter_type};
write_chunk_content(deflate_and_scanline_header);
adler_32.feed(scanline_filter_type);
adler_32.feed(scanline);
// Chunked writing to avoid large single writes
constexpr size_t CHUNK_SIZE = 80; // Tune for your hardware/filesystem
for (size_t i = 0; i < scanline.size(); i += CHUNK_SIZE) {
size_t chunk_len = std::min(CHUNK_SIZE, scanline.size() - i);
write_chunk_content(&scanline[i], chunk_len * sizeof(ui::ColorRGB888));
}
scanline_count++;
}
void PNGWriter::write_chunk_header(
const size_t length,
const std::array<uint8_t, 4>& type) {