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Add voice image packet retry

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Janez T
2026-03-01 19:25:19 +01:00
parent 0e7ba5572d
commit a0c4cdeede
10 changed files with 388 additions and 44 deletions
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23
lib/services/image_codec_service.dart
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@@ -21,6 +21,7 @@ class ImageCodecService {
Uint8List rawBytes, {
int maxDimension = 256,
int compression = 90,
bool grayscale = true,
}) async {
try {
// 1a. Probe original dimensions (no resize).
@@ -64,17 +65,19 @@ class ImageCodecService {
image.dispose();
if (byteData == null) return null;
// 3. Convert to grayscale in-place (luminance, keep alpha = 255).
// 3. Optionally convert to grayscale in-place (luminance).
final rgba = byteData.buffer.asUint8List();
for (var i = 0; i < rgba.length; i += 4) {
final lum =
(0.299 * rgba[i] + 0.587 * rgba[i + 1] + 0.114 * rgba[i + 2])
.round()
.clamp(0, 255);
rgba[i] = lum;
rgba[i + 1] = lum;
rgba[i + 2] = lum;
rgba[i + 3] = 255; // fully opaque
if (grayscale) {
for (var i = 0; i < rgba.length; i += 4) {
final lum =
(0.299 * rgba[i] + 0.587 * rgba[i + 1] + 0.114 * rgba[i + 2])
.round()
.clamp(0, 255);
rgba[i] = lum;
rgba[i + 1] = lum;
rgba[i + 2] = lum;
rgba[i + 3] = 255;
}
}
// 4. Re-encode grayscale RGBA → PNG so encodeAvif can decode it.