| Phil Burk | 062e67a | 2015-02-11 13:40:50 -0800 | [diff] [blame^] | 1 | /* |
| 2 | ** |
| 3 | ** Copyright 2007, The Android Open Source Project |
| 4 | ** |
| 5 | ** Licensed under the Apache License, Version 2.0 (the "License"); |
| 6 | ** you may not use this file except in compliance with the License. |
| 7 | ** You may obtain a copy of the License at |
| 8 | ** |
| 9 | ** http://www.apache.org/licenses/LICENSE-2.0 |
| 10 | ** |
| 11 | ** Unless required by applicable law or agreed to in writing, software |
| 12 | ** distributed under the License is distributed on an "AS IS" BASIS, |
| 13 | ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 14 | ** See the License for the specific language governing permissions and |
| 15 | ** limitations under the License. |
| 16 | */ |
| 17 | |
| 18 | #define LOG_TAG "AudioHwDevice" |
| 19 | //#define LOG_NDEBUG 0 |
| 20 | |
| 21 | #include <hardware/audio.h> |
| 22 | #include <utils/Log.h> |
| 23 | |
| 24 | #include <audio_utils/spdif/SPDIFEncoder.h> |
| 25 | |
| 26 | #include "AudioHwDevice.h" |
| 27 | #include "AudioStreamOut.h" |
| 28 | #include "SpdifStreamOut.h" |
| 29 | |
| 30 | namespace android { |
| 31 | |
| 32 | // ---------------------------------------------------------------------------- |
| 33 | |
| 34 | status_t AudioHwDevice::openOutputStream( |
| 35 | AudioStreamOut **ppStreamOut, |
| 36 | audio_io_handle_t handle, |
| 37 | audio_devices_t devices, |
| 38 | audio_output_flags_t flags, |
| 39 | struct audio_config *config, |
| 40 | const char *address) |
| 41 | { |
| 42 | |
| 43 | struct audio_config originalConfig = *config; |
| 44 | AudioStreamOut *outputStream = new AudioStreamOut(this, flags); |
| 45 | |
| 46 | // Try to open the HAL first using the current format. |
| 47 | ALOGV("AudioHwDevice::openOutputStream(), try " |
| 48 | " sampleRate %d, Format %#x, " |
| 49 | "channelMask %#x", |
| 50 | config->sample_rate, |
| 51 | config->format, |
| 52 | config->channel_mask); |
| 53 | status_t status = outputStream->open(handle, devices, config, address); |
| 54 | |
| 55 | if (status != NO_ERROR) { |
| 56 | delete outputStream; |
| 57 | outputStream = NULL; |
| 58 | |
| 59 | // FIXME Look at any modification to the config. |
| 60 | // The HAL might modify the config to suggest a wrapped format. |
| 61 | // Log this so we can see what the HALs are doing. |
| 62 | ALOGI("AudioHwDevice::openOutputStream(), HAL returned" |
| 63 | " sampleRate %d, Format %#x, " |
| 64 | "channelMask %#x, status %d", |
| 65 | config->sample_rate, |
| 66 | config->format, |
| 67 | config->channel_mask, |
| 68 | status); |
| 69 | |
| 70 | // If the data is encoded then try again using wrapped PCM. |
| 71 | bool wrapperNeeded = !audio_is_linear_pcm(originalConfig.format) |
| 72 | && ((flags & AUDIO_OUTPUT_FLAG_DIRECT) != 0) |
| 73 | && ((flags & AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD) == 0); |
| 74 | |
| 75 | // FIXME - Add isEncodingSupported() query to SPDIF wrapper then |
| 76 | // call it from here. |
| 77 | if (wrapperNeeded) { |
| 78 | outputStream = new SpdifStreamOut(this, flags); |
| 79 | status = outputStream->open(handle, devices, &originalConfig, address); |
| 80 | if (status != NO_ERROR) { |
| 81 | ALOGE("ERROR - AudioHwDevice::openOutputStream(), SPDIF open returned %d", |
| 82 | status); |
| 83 | delete outputStream; |
| 84 | outputStream = NULL; |
| 85 | } |
| 86 | } |
| 87 | } |
| 88 | |
| 89 | *ppStreamOut = outputStream; |
| 90 | return status; |
| 91 | } |
| 92 | |
| 93 | |
| 94 | }; // namespace android |