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Add a c-api interface to get the output of a specified layer. #3528

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Aug 16, 2017
Merged

Add a c-api interface to get the output of a specified layer. #3528

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16 changes: 16 additions & 0 deletions paddle/capi/gradient_machine.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -146,3 +146,19 @@ paddle_error paddle_gradient_machine_randomize_param(
m->machine->randParameters();
return kPD_NO_ERROR;
}

paddle_error paddle_gradient_machine_get_layer_output(
paddle_gradient_machine machine,
const char* layerName,
paddle_arguments args) {
auto m = cast(machine);
auto out = paddle::capi::cast<paddle::capi::CArguments>(args);
if (m == nullptr || layerName == nullptr || out == nullptr ||
m->machine == nullptr) {
return kPD_NULLPTR;
}

auto layerOutput = m->machine->getLayerOutput(layerName);
out->args.push_back(layerOutput);
return kPD_NO_ERROR;
}
18 changes: 17 additions & 1 deletion paddle/capi/gradient_machine.h
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Original file line number Diff line number Diff line change
Expand Up @@ -39,7 +39,11 @@ PD_API paddle_error paddle_gradient_machine_create_for_inference(
/**
* @brief Create a gradient machine used for model inference, using config with
* parameters which is generated by `paddle merge_model`.
* @param [out] machine that used for model inference.
* Example:
* paddle merge_model \
* --model_dir="pass-00000" \
* --model_file="merged_model.paddle"
* @param [out] machine that used for model inference
* @param [in] mergedModel
* @param [in] size
* @return paddle_error
Expand Down Expand Up @@ -97,6 +101,18 @@ paddle_gradient_machine_randomize_param(paddle_gradient_machine machine);
PD_API paddle_error
paddle_gradient_machine_destroy(paddle_gradient_machine machine);

/**
* @brief Get the output of the layer named `layerName`.
* @param [in] gradient machine that have run a inference
* @param [in] layerName name of specified layer
* @param [out] args output of the specified layer
* @return paddle_error
*/
PD_API paddle_error
paddle_gradient_machine_get_layer_output(paddle_gradient_machine machine,
const char* layerName,
paddle_arguments args);

#ifdef __cplusplus
}
#endif
Expand Down