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Flatten Mistral image payload to use direct image_url string #73

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Android-PowerUser wants to merge 3 commits into from
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Flatten Mistral image payload to use direct image_url string #73

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7fbf443
Fix Mistral image_url payload format for vision requests
Android-PowerUser Apr 5, 2026
5738e2e
Update PhotoReasoningViewModel.kt
Android-PowerUser Apr 6, 2026
90ee92d
Update PhotoReasoningViewModel.kt
Android-PowerUser Apr 6, 2026
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7 changes: 2 additions & 5 deletions app/src/main/kotlin/com/google/ai/sample/ScreenCaptureApiClients.kt
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Original file line number Diff line number Diff line change
Expand Up @@ -50,10 +50,7 @@ data class ServiceMistralTextContent(@SerialName("text") val text: String) : Ser

@Serializable
@SerialName("image_url")
data class ServiceMistralImageContent(@SerialName("image_url") val imageUrl: ServiceMistralImageUrl) : ServiceMistralContent()

@Serializable
data class ServiceMistralImageUrl(val url: String)
data class ServiceMistralImageContent(@SerialName("image_url") val imageUrl: String) : ServiceMistralContent()

@Serializable
data class ServiceMistralResponse(
Expand Down Expand Up @@ -104,7 +101,7 @@ internal suspend fun callMistralApi(
is TextPart -> if (part.text.isNotBlank()) ServiceMistralTextContent(text = part.text) else null
is ImagePart -> {
if (supportsScreenshot) {
ServiceMistralImageContent(imageUrl = ServiceMistralImageUrl(url = "data:image/jpeg;base64,${com.google.ai.sample.util.ImageUtils.bitmapToBase64(part.image)}"))
ServiceMistralImageContent(imageUrl = "data:image/jpeg;base64,${com.google.ai.sample.util.ImageUtils.bitmapToBase64(part.image)}")
} else null
}
else -> null
Expand Down
5 changes: 1 addition & 4 deletions app/src/main/kotlin/com/google/ai/sample/feature/multimodal/PhotoReasoningProviderDtos.kt
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Expand Up @@ -66,12 +66,9 @@ internal data class MistralTextContent(val text: String) : MistralContent()
@Serializable
@kotlinx.serialization.SerialName("image_url")
internal data class MistralImageContent(
@kotlinx.serialization.SerialName("image_url") val imageUrl: MistralImageUrl
@kotlinx.serialization.SerialName("image_url") val imageUrl: String
) : MistralContent()

@Serializable
internal data class MistralImageUrl(val url: String)

@Serializable
internal data class MistralResponse(
val choices: List<MistralChoice>
Expand Down
8 changes: 3 additions & 5 deletions app/src/main/kotlin/com/google/ai/sample/feature/multimodal/PhotoReasoningViewModel.kt
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Expand Up @@ -1097,9 +1097,7 @@ class PhotoReasoningViewModel(
for (bitmap in selectedImages)
updatedContent.add(
MistralImageContent(
imageUrl = MistralImageUrl(
url = "data:image/jpeg;base64,${PhotoReasoningSerialization.bitmapToBase64(bitmap)}"
)
imageUrl = "data:image/jpeg;base64,${PhotoReasoningSerialization.bitmapToBase64(bitmap)}"
)
)
apiMessages[apiMessages.lastIndex] = lastUserMsg.copy(content = updatedContent)
Expand All @@ -1120,7 +1118,7 @@ class PhotoReasoningViewModel(
messages = apiMessages,
temperature = genSettings.temperature.toDouble().coerceAtLeast(0.01),
top_p = genSettings.topP.toDouble().coerceAtLeast(0.01),
max_tokens = 4096,
max_tokens = 50000,
stream = true
)
val jsonBody = jsonSerializer.encodeToString(MistralRequest.serializer(), requestBody)
Expand Down Expand Up @@ -1293,7 +1291,7 @@ class PhotoReasoningViewModel(
messages = apiMessages,
temperature = genSettings.temperature.toDouble(),
top_p = genSettings.topP.toDouble(),
max_tokens = 4096,
max_tokens = 320000,
stream = true
)

Expand Down
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