Cody Schuffelen | 134ff03 | 2019-11-22 00:25:32 -0800 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright (C) 2016 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | #pragma once |
| 17 | |
| 18 | #include <stdlib.h> |
| 19 | #include <stdint.h> |
| 20 | #include <time.h> |
| 21 | |
| 22 | #include <system/audio.h> |
| 23 | |
| 24 | typedef uint32_t size32_t; |
| 25 | |
| 26 | struct timespec32 { |
| 27 | uint32_t tv_sec; |
| 28 | uint32_t tv_nsec; |
| 29 | |
| 30 | timespec32() = default; |
| 31 | |
| 32 | timespec32(const timespec &from) |
| 33 | : tv_sec(from.tv_sec), |
| 34 | tv_nsec(from.tv_nsec) { |
| 35 | } |
| 36 | }; |
| 37 | |
| 38 | struct gce_audio_message { |
| 39 | static const size32_t kMaxAudioFrameLen = 65536; |
| 40 | enum message_t { |
| 41 | UNKNOWN = 0, |
| 42 | DATA_SAMPLES = 1, |
| 43 | OPEN_INPUT_STREAM = 2, |
| 44 | OPEN_OUTPUT_STREAM = 3, |
| 45 | CLOSE_INPUT_STREAM = 4, |
| 46 | CLOSE_OUTPUT_STREAM = 5, |
| 47 | CONTROL_PAUSE = 100 |
| 48 | }; |
| 49 | // Size of the header + data. Used to frame when we're on TCP. |
| 50 | size32_t total_size; |
| 51 | // Size of the audio header |
| 52 | size32_t header_size; |
| 53 | message_t message_type; |
| 54 | // Identifier for the stream. |
| 55 | uint32_t stream_number; |
| 56 | // HAL assigned frame number, starts from 0. |
| 57 | int64_t frame_num; |
| 58 | // MONOTONIC_TIME when these frames were presented to the HAL. |
| 59 | timespec32 time_presented; |
| 60 | // Sample rate from the audio configuration. |
| 61 | uint32_t frame_rate; |
| 62 | // Channel mask from the audio configuration. |
| 63 | audio_channel_mask_t channel_mask; |
| 64 | // Format from the audio configuration. |
| 65 | audio_format_t format; |
| 66 | // Size of each frame in bytes. |
| 67 | size32_t frame_size; |
| 68 | // Number of frames that were presented to the HAL. |
| 69 | size32_t num_frames_presented; |
| 70 | // Number of frames that the HAL accepted. |
| 71 | // For blocking audio this will be the same as num_frames. |
| 72 | // For non-blocking audio this may be less. |
| 73 | size32_t num_frames_accepted; |
| 74 | // Count of the number of packets that were dropped because they would |
| 75 | // have blocked the HAL or exceeded the maximum message size. |
| 76 | size32_t num_packets_dropped; |
| 77 | // Count of the number of packets that were shortened to fit within |
| 78 | // kMaxAudioFrameLen. |
| 79 | size32_t num_packets_shortened; |
| 80 | // num_frames_presented (not num_frames_accepted) will follow here. |
| 81 | |
| 82 | gce_audio_message() : |
| 83 | total_size(sizeof(gce_audio_message)), |
| 84 | header_size(sizeof(gce_audio_message)), |
| 85 | message_type(UNKNOWN), |
| 86 | stream_number(0), |
| 87 | frame_num(0), |
| 88 | frame_rate(0), |
| 89 | channel_mask(0), |
| 90 | format(AUDIO_FORMAT_DEFAULT), |
| 91 | frame_size(0), |
| 92 | num_frames_presented(0), |
| 93 | num_frames_accepted(0), |
| 94 | num_packets_dropped(0), |
| 95 | num_packets_shortened(0) { |
| 96 | time_presented.tv_sec = 0; |
| 97 | time_presented.tv_nsec = 0; |
| 98 | } |
| 99 | }; |