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add support for gifs

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This commit is contained in:
David Kaspar
2025-05-13 08:41:55 +02:00
parent 2e4c9f77e6
commit 095d054d62
1 changed files with 4 additions and 0 deletions
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amethyst/src/main/java/com/vitorpamplona/amethyst/ui/components/ShareHelper.kt
+4
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@@ -39,6 +39,7 @@ object ShareHelper {
private val PNG_MAGIC = byteArrayOf(0x89.toByte(), 0x50.toByte(), 0x4E.toByte(), 0x47.toByte())
private val WEBP_HEADER_START = "RIFF".toByteArray()
private val WEBP_HEADER_END = "WEBP".toByteArray()
private val GIF_MAGIC = "GIF8".toByteArray()
fun getSharableUriFromUrl(
context: Context,
@@ -78,6 +79,9 @@ object ShareHelper {
// PNG: Check first 4 bytes
matchesMagicNumbers(header, 0, PNG_MAGIC) -> "png"
// GIF: Check first 4 bytes for "GIF8"
matchesMagicNumbers(header, 0, GIF_MAGIC) -> "gif"
// WEBP: Check "RIFF" (bytes 0-3) and "WEBP" (bytes 8-11)
matchesMagicNumbers(header, 0, WEBP_HEADER_START) &&
bytesRead >= 12 &&