| // Copyright 2015 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef MEDIA_GPU_AVDA_RETURN_ON_FAILURE_H_ |
| #define MEDIA_GPU_AVDA_RETURN_ON_FAILURE_H_ |
| |
| #include "media/video/video_decode_accelerator.h" |
| |
| // Helper macros for dealing with failure. If |result| evaluates false, emit |
| // |log| to ERROR, register |error| with the decoder, and return. This will |
| // also transition to the error state, stopping further decoding. |
| // This is meant to be used only within AndroidVideoDecoder and the various |
| // backing strategies. |provider| must support PostError. The varargs |
| // can be used for the return value. |
| #define RETURN_ON_FAILURE(provider, result, log, error, ...) \ |
| do { \ |
| if (!(result)) { \ |
| DLOG(ERROR) << log; \ |
| provider->PostError(FROM_HERE, VideoDecodeAccelerator::error); \ |
| return __VA_ARGS__; \ |
| } \ |
| } while (0) |
| |
| // Similar to the above, with some handy boilerplate savings. The varargs |
| // can be used for the return value. |
| #define RETURN_IF_NULL(ptr, ...) \ |
| RETURN_ON_FAILURE(state_provider_, ptr, "Got null for " << #ptr, \ |
| ILLEGAL_STATE, ##__VA_ARGS__); |
| |
| // Return null if !ptr. |
| #define RETURN_NULL_IF_NULL(ptr) RETURN_IF_NULL(ptr, 0) |
| |
| #endif // MEDIA_GPU_AVDA_RETURN_ON_FAILURE_H_ |