upstream-archive/stable-diffusion.cpp
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fix: add alpha channel input for Qwen Image 2.1 and relative docs (#2021)

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This commit is contained in:
Weiqi Gao
2026-09-22 21:45:06 +08:00
committed by GitHub
parent e01206574b
commit e112ab5a50
12 changed files with 125 additions and 50 deletions
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examples/common/common.cpp
+14 -12
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@@ -1848,20 +1848,22 @@ bool decode_base64_image(const std::string& encoded_input,
return false;
}
int decoded_width = 0;
int decoded_height = 0;
uint8_t* raw_data = load_image_from_memory(reinterpret_cast<const char*>(image_bytes.data()),
static_cast<int>(image_bytes.size()),
decoded_width,
decoded_height,
expected_width,
expected_height,
target_channels);
int decoded_width = 0;
int decoded_height = 0;
int resolved_channel = target_channels;
uint8_t* raw_data = load_image_from_memory(reinterpret_cast<const char*>(image_bytes.data()),
static_cast<int>(image_bytes.size()),
decoded_width,
decoded_height,
resolved_channel,
expected_width,
expected_height,
target_channels);
if (raw_data == nullptr) {
return false;
}
out_image.reset({(uint32_t)decoded_width, (uint32_t)decoded_height, (uint32_t)target_channels, raw_data});
out_image.reset({(uint32_t)decoded_width, (uint32_t)decoded_height, (uint32_t)resolved_channel, raw_data});
return true;
}
@@ -2215,7 +2217,7 @@ bool SDGenerationParams::from_json_str(
LOG_ERROR("invalid lora");
return false;
}
if (!parse_image_json_field(j, "init_image", 3, width, height, init_image)) {
if (!parse_image_json_field(j, "init_image", 0, width, height, init_image)) {
LOG_ERROR("invalid init_image");
return false;
}
@@ -2225,7 +2227,7 @@ bool SDGenerationParams::from_json_str(
}
if (!parse_image_array_json_field(j,
"ref_images",
3,
0,
auto_resize_ref_image ? width : 0,
auto_resize_ref_image ? height : 0,
ref_images)) {