AudioTrack.h revision faabb51ceef13bf1e3f692219ac410c1cd75d0de
189fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project/* 289fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project * Copyright (C) 2007 The Android Open Source Project 389fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project * 489fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project * Licensed under the Apache License, Version 2.0 (the "License"); 589fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project * you may not use this file except in compliance with the License. 689fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project * You may obtain a copy of the License at 789fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project * 889fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project * http://www.apache.org/licenses/LICENSE-2.0 989fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project * 1089fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project * Unless required by applicable law or agreed to in writing, software 1189fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project * distributed under the License is distributed on an "AS IS" BASIS, 1289fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 1389fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project * See the License for the specific language governing permissions and 1489fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project * limitations under the License. 1589fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project */ 1689fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project 1789fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project#ifndef ANDROID_AUDIOTRACK_H 1889fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project#define ANDROID_AUDIOTRACK_H 1989fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project 20a636433cbd09c0708b85f337ef45c0cdef3bcb4dGlenn Kasten#include <cutils/sched_policy.h> 219f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten#include <media/AudioSystem.h> 22ce70374bf105f8a6160bf5dd70affea012b2a464Glenn Kasten#include <media/AudioTimestamp.h> 239f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten#include <media/IAudioTrack.h> 2489fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project#include <utils/threads.h> 2589fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project 2689fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Projectnamespace android { 2789fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project 2889fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project// ---------------------------------------------------------------------------- 2989fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project 3001d3acba9de861cb2b718338e787cff3566fc5ecGlenn Kastenstruct audio_track_cblk_t; 31e3aa659e9cee7df5c12a80d285cc29ab3b2cbb39Glenn Kastenclass AudioTrackClientProxy; 329f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kastenclass StaticAudioTrackClientProxy; 3389fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project 3489fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project// ---------------------------------------------------------------------------- 3589fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project 369f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kastenclass AudioTrack : public RefBase 3789fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project{ 3889fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Projectpublic: 3989fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project 409f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten /* Events used by AudioTrack callback function (callback_t). 41ad2f6dbe14e601ae69f3697bc17106f9fd7d59d6Glenn Kasten * Keep in sync with frameworks/base/media/java/android/media/AudioTrack.java NATIVE_EVENT_*. 4289fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project */ 4389fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project enum event_type { 44083d1c1492d496960d5b28f4664ff02101736677Glenn Kasten EVENT_MORE_DATA = 0, // Request to write more data to buffer. 45083d1c1492d496960d5b28f4664ff02101736677Glenn Kasten // If this event is delivered but the callback handler 46083d1c1492d496960d5b28f4664ff02101736677Glenn Kasten // does not want to write more data, the handler must explicitly 47083d1c1492d496960d5b28f4664ff02101736677Glenn Kasten // ignore the event by setting frameCount to zero. 48083d1c1492d496960d5b28f4664ff02101736677Glenn Kasten EVENT_UNDERRUN = 1, // Buffer underrun occurred. 4985ab62c4b433df3f1a9826bed1c9bec07a86c750Glenn Kasten EVENT_LOOP_END = 2, // Sample loop end was reached; playback restarted from 5085ab62c4b433df3f1a9826bed1c9bec07a86c750Glenn Kasten // loop start if loop count was not 0. 5185ab62c4b433df3f1a9826bed1c9bec07a86c750Glenn Kasten EVENT_MARKER = 3, // Playback head is at the specified marker position 5285ab62c4b433df3f1a9826bed1c9bec07a86c750Glenn Kasten // (See setMarkerPosition()). 5385ab62c4b433df3f1a9826bed1c9bec07a86c750Glenn Kasten EVENT_NEW_POS = 4, // Playback head is at a new position 5485ab62c4b433df3f1a9826bed1c9bec07a86c750Glenn Kasten // (See setPositionUpdatePeriod()). 559f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten EVENT_BUFFER_END = 5, // Playback head is at the end of the buffer. 569f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // Not currently used by android.media.AudioTrack. 579f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten EVENT_NEW_IAUDIOTRACK = 6, // IAudioTrack was re-created, either due to re-routing and 589f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // voluntary invalidation by mediaserver, or mediaserver crash. 59ad3af3305f024bcbbd55c894a4995e449498e1baRichard Fitzgerald EVENT_STREAM_END = 7, // Sent after all the buffers queued in AF and HW are played 60ad3af3305f024bcbbd55c894a4995e449498e1baRichard Fitzgerald // back (after stop is called) 61ce70374bf105f8a6160bf5dd70affea012b2a464Glenn Kasten EVENT_NEW_TIMESTAMP = 8, // Delivered periodically and when there's a significant change 62ce70374bf105f8a6160bf5dd70affea012b2a464Glenn Kasten // in the mapping from frame position to presentation time. 63ce70374bf105f8a6160bf5dd70affea012b2a464Glenn Kasten // See AudioTimestamp for the information included with event. 6489fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project }; 6589fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project 6699e53b86eebb605b70dd7591b89bf61a9414ed0eGlenn Kasten /* Client should declare Buffer on the stack and pass address to obtainBuffer() 6799e53b86eebb605b70dd7591b89bf61a9414ed0eGlenn Kasten * and releaseBuffer(). See also callback_t for EVENT_MORE_DATA. 6889fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project */ 6989fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project 7089fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project class Buffer 7189fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project { 7289fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project public: 739f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // FIXME use m prefix 7499e53b86eebb605b70dd7591b89bf61a9414ed0eGlenn Kasten size_t frameCount; // number of sample frames corresponding to size; 7599e53b86eebb605b70dd7591b89bf61a9414ed0eGlenn Kasten // on input it is the number of frames desired, 7699e53b86eebb605b70dd7591b89bf61a9414ed0eGlenn Kasten // on output is the number of frames actually filled 77fb1fdc9d6603aa228362e7349451f6455c9849c2Glenn Kasten // (currently ignored, but will make the primary field in future) 7899e53b86eebb605b70dd7591b89bf61a9414ed0eGlenn Kasten 799f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten size_t size; // input/output in bytes == frameCount * frameSize 802301acc6a9c7a3af4ad01f3d1d0f76f13eca7350Glenn Kasten // on input it is unused 81fb1fdc9d6603aa228362e7349451f6455c9849c2Glenn Kasten // on output is the number of bytes actually filled 829f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // FIXME this is redundant with respect to frameCount, 839f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // and TRANSFER_OBTAIN mode is broken for 8-bit data 849f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // since we don't define the frame format 859f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten 8689fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project union { 8789fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project void* raw; 889f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten short* i16; // signed 16-bit 899f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten int8_t* i8; // unsigned 8-bit, offset by 0x80 902301acc6a9c7a3af4ad01f3d1d0f76f13eca7350Glenn Kasten }; // input: unused, output: pointer to buffer 9189fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project }; 9289fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project 9389fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project /* As a convenience, if a callback is supplied, a handler thread 9489fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project * is automatically created with the appropriate priority. This thread 9599e53b86eebb605b70dd7591b89bf61a9414ed0eGlenn Kasten * invokes the callback when a new buffer becomes available or various conditions occur. 9689fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project * Parameters: 9789fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project * 9889fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project * event: type of event notified (see enum AudioTrack::event_type). 9989fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project * user: Pointer to context for use by the callback receiver. 10089fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project * info: Pointer to optional parameter according to event type: 10189fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project * - EVENT_MORE_DATA: pointer to AudioTrack::Buffer struct. The callback must not write 10299e53b86eebb605b70dd7591b89bf61a9414ed0eGlenn Kasten * more bytes than indicated by 'size' field and update 'size' if fewer bytes are 10399e53b86eebb605b70dd7591b89bf61a9414ed0eGlenn Kasten * written. 10489fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project * - EVENT_UNDERRUN: unused. 10589fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project * - EVENT_LOOP_END: pointer to an int indicating the number of loops remaining. 1069f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten * - EVENT_MARKER: pointer to const uint32_t containing the marker position in frames. 1079f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten * - EVENT_NEW_POS: pointer to const uint32_t containing the new position in frames. 10889fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project * - EVENT_BUFFER_END: unused. 1099f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten * - EVENT_NEW_IAUDIOTRACK: unused. 110ce70374bf105f8a6160bf5dd70affea012b2a464Glenn Kasten * - EVENT_STREAM_END: unused. 111ce70374bf105f8a6160bf5dd70affea012b2a464Glenn Kasten * - EVENT_NEW_TIMESTAMP: pointer to const AudioTimestamp. 11289fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project */ 11389fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project 114d217a8c4632b3e3065f8c2a26b9ce4dc4c97171fGlenn Kasten typedef void (*callback_t)(int event, void* user, void *info); 11589fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project 11633005a932c60a0780fe9b7307d5988df3d9f6c26Chia-chi Yeh /* Returns the minimum frame count required for the successful creation of 11733005a932c60a0780fe9b7307d5988df3d9f6c26Chia-chi Yeh * an AudioTrack object. 11833005a932c60a0780fe9b7307d5988df3d9f6c26Chia-chi Yeh * Returned status (from utils/Errors.h) can be: 11933005a932c60a0780fe9b7307d5988df3d9f6c26Chia-chi Yeh * - NO_ERROR: successful operation 12033005a932c60a0780fe9b7307d5988df3d9f6c26Chia-chi Yeh * - NO_INIT: audio server or audio hardware not initialized 1216ca126d5c83386941c5cb9600099e5510e4430d6Glenn Kasten * - BAD_VALUE: unsupported configuration 12266a0467fdddada4caabd0f0a999fbb367fea7beeGlenn Kasten * frameCount is guaranteed to be non-zero if status is NO_ERROR, 12366a0467fdddada4caabd0f0a999fbb367fea7beeGlenn Kasten * and is undefined otherwise. 12433005a932c60a0780fe9b7307d5988df3d9f6c26Chia-chi Yeh */ 12533005a932c60a0780fe9b7307d5988df3d9f6c26Chia-chi Yeh 1269f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten static status_t getMinFrameCount(size_t* frameCount, 1279f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten audio_stream_type_t streamType, 1289f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten uint32_t sampleRate); 1299f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten 1309f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten /* How data is transferred to AudioTrack 1319f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten */ 1329f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten enum transfer_type { 1339f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten TRANSFER_DEFAULT, // not specified explicitly; determine from the other parameters 1349f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten TRANSFER_CALLBACK, // callback EVENT_MORE_DATA 1359f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten TRANSFER_OBTAIN, // FIXME deprecated: call obtainBuffer() and releaseBuffer() 1369f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten TRANSFER_SYNC, // synchronous write() 1379f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten TRANSFER_SHARED, // shared memory 1389f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten }; 13933005a932c60a0780fe9b7307d5988df3d9f6c26Chia-chi Yeh 14089fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project /* Constructs an uninitialized AudioTrack. No connection with 141083d1c1492d496960d5b28f4664ff02101736677Glenn Kasten * AudioFlinger takes place. Use set() after this. 14289fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project */ 14389fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project AudioTrack(); 14489fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project 145ad2f6dbe14e601ae69f3697bc17106f9fd7d59d6Glenn Kasten /* Creates an AudioTrack object and registers it with AudioFlinger. 14689fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project * Once created, the track needs to be started before it can be used. 147083d1c1492d496960d5b28f4664ff02101736677Glenn Kasten * Unspecified values are set to appropriate default values. 148083d1c1492d496960d5b28f4664ff02101736677Glenn Kasten * With this constructor, the track is configured for streaming mode. 149083d1c1492d496960d5b28f4664ff02101736677Glenn Kasten * Data to be rendered is supplied by write() or by the callback EVENT_MORE_DATA. 1509f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten * Intermixing a combination of write() and non-ignored EVENT_MORE_DATA is not allowed. 15189fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project * 15289fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project * Parameters: 15389fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project * 15489fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project * streamType: Select the type of audio stream this track is attached to 155fce7a473248381cc83a01855f92581077d3c9ee2Dima Zavin * (e.g. AUDIO_STREAM_MUSIC). 1569f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten * sampleRate: Data source sampling rate in Hz. 157b773038277ba328696832b690b91ce6e95bd1a6cGlenn Kasten * format: Audio format. For mixed tracks, any PCM format supported by server is OK 158b773038277ba328696832b690b91ce6e95bd1a6cGlenn Kasten * or AUDIO_FORMAT_PCM_8_BIT which is handled on client side. For direct 159b773038277ba328696832b690b91ce6e95bd1a6cGlenn Kasten * and offloaded tracks, the possible format(s) depends on the output sink. 1602b2165c75790050810460c8de3f414876bce4c0eGlenn Kasten * channelMask: Channel mask, such that audio_is_output_channel(channelMask) is true. 161d8d6185c978c9b27ca69e7791785e0983ed9e8b8Eric Laurent * frameCount: Minimum size of track PCM buffer in frames. This defines the 162ad2f6dbe14e601ae69f3697bc17106f9fd7d59d6Glenn Kasten * application's contribution to the 163d8d6185c978c9b27ca69e7791785e0983ed9e8b8Eric Laurent * latency of the track. The actual size selected by the AudioTrack could be 164d8d6185c978c9b27ca69e7791785e0983ed9e8b8Eric Laurent * larger if the requested size is not compatible with current audio HAL 165083d1c1492d496960d5b28f4664ff02101736677Glenn Kasten * configuration. Zero means to use a default value. 1660ca3cf94c0dfc173ad7886ae162c4b67067539f6Eric Laurent * flags: See comments on audio_output_flags_t in <system/audio.h>. 16789fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project * cbf: Callback function. If not null, this function is called periodically 168083d1c1492d496960d5b28f4664ff02101736677Glenn Kasten * to provide new data and inform of marker, position updates, etc. 169362c4e697d8e9c034e964ac7b40227e054491547Glenn Kasten * user: Context for use by the callback receiver. 17089fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project * notificationFrames: The callback function is called each time notificationFrames PCM 171362c4e697d8e9c034e964ac7b40227e054491547Glenn Kasten * frames have been consumed from track input buffer. 1729f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten * This is expressed in units of frames at the initial source sample rate. 173362c4e697d8e9c034e964ac7b40227e054491547Glenn Kasten * sessionId: Specific session ID, or zero to use default. 1749f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten * transferType: How data is transferred to AudioTrack. 1759f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten * threadCanCallJava: Not present in parameter list, and so is fixed at false. 17689fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project */ 17789fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project 178fff6d715a8db0daf08a50634f242c40268de3d49Glenn Kasten AudioTrack( audio_stream_type_t streamType, 179743732236ab84e94168378cdb293964861b1ed00Glenn Kasten uint32_t sampleRate, 180743732236ab84e94168378cdb293964861b1ed00Glenn Kasten audio_format_t format, 181743732236ab84e94168378cdb293964861b1ed00Glenn Kasten audio_channel_mask_t, 182bce50bfc3846ab008bafa75c5d3f29fd7b5395f7Glenn Kasten size_t frameCount = 0, 1830ca3cf94c0dfc173ad7886ae162c4b67067539f6Eric Laurent audio_output_flags_t flags = AUDIO_OUTPUT_FLAG_NONE, 184a0d68338a88c2ddb4502f95017b546d603ef1ec7Glenn Kasten callback_t cbf = NULL, 185a0d68338a88c2ddb4502f95017b546d603ef1ec7Glenn Kasten void* user = NULL, 186838b3d8bafa4a781e277870dee4e0390165cff52Glenn Kasten uint32_t notificationFrames = 0, 187aea7ea06394bcb155972d82055d4ea59962e4051Glenn Kasten int sessionId = AUDIO_SESSION_ALLOCATE, 188ad3af3305f024bcbbd55c894a4995e449498e1baRichard Fitzgerald transfer_type transferType = TRANSFER_DEFAULT, 189462fd2fa9eef642b0574aa7409de0bde3fec8d43Marco Nelissen const audio_offload_info_t *offloadInfo = NULL, 190d457c970c8d08519cd77280a90b61ae1e342cfe3Marco Nelissen int uid = -1, 191d457c970c8d08519cd77280a90b61ae1e342cfe3Marco Nelissen pid_t pid = -1); 19289fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project 193083d1c1492d496960d5b28f4664ff02101736677Glenn Kasten /* Creates an audio track and registers it with AudioFlinger. 194083d1c1492d496960d5b28f4664ff02101736677Glenn Kasten * With this constructor, the track is configured for static buffer mode. 195083d1c1492d496960d5b28f4664ff02101736677Glenn Kasten * The format must not be 8-bit linear PCM. 196083d1c1492d496960d5b28f4664ff02101736677Glenn Kasten * Data to be rendered is passed in a shared memory buffer 197083d1c1492d496960d5b28f4664ff02101736677Glenn Kasten * identified by the argument sharedBuffer, which must be non-0. 198083d1c1492d496960d5b28f4664ff02101736677Glenn Kasten * The memory should be initialized to the desired data before calling start(). 1994bae3649d504d590a546717a8e49f96a30d9a745Glenn Kasten * The write() method is not supported in this case. 200362c4e697d8e9c034e964ac7b40227e054491547Glenn Kasten * It is recommended to pass a callback function to be notified of playback end by an 20189fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project * EVENT_UNDERRUN event. 20289fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project */ 20389fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project 204fff6d715a8db0daf08a50634f242c40268de3d49Glenn Kasten AudioTrack( audio_stream_type_t streamType, 205743732236ab84e94168378cdb293964861b1ed00Glenn Kasten uint32_t sampleRate, 206743732236ab84e94168378cdb293964861b1ed00Glenn Kasten audio_format_t format, 207743732236ab84e94168378cdb293964861b1ed00Glenn Kasten audio_channel_mask_t channelMask, 208743732236ab84e94168378cdb293964861b1ed00Glenn Kasten const sp<IMemory>& sharedBuffer, 2090ca3cf94c0dfc173ad7886ae162c4b67067539f6Eric Laurent audio_output_flags_t flags = AUDIO_OUTPUT_FLAG_NONE, 210a0d68338a88c2ddb4502f95017b546d603ef1ec7Glenn Kasten callback_t cbf = NULL, 211a0d68338a88c2ddb4502f95017b546d603ef1ec7Glenn Kasten void* user = NULL, 212838b3d8bafa4a781e277870dee4e0390165cff52Glenn Kasten uint32_t notificationFrames = 0, 213aea7ea06394bcb155972d82055d4ea59962e4051Glenn Kasten int sessionId = AUDIO_SESSION_ALLOCATE, 214ad3af3305f024bcbbd55c894a4995e449498e1baRichard Fitzgerald transfer_type transferType = TRANSFER_DEFAULT, 215462fd2fa9eef642b0574aa7409de0bde3fec8d43Marco Nelissen const audio_offload_info_t *offloadInfo = NULL, 216d457c970c8d08519cd77280a90b61ae1e342cfe3Marco Nelissen int uid = -1, 217d457c970c8d08519cd77280a90b61ae1e342cfe3Marco Nelissen pid_t pid = -1); 21889fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project 21989fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project /* Terminates the AudioTrack and unregisters it from AudioFlinger. 220362c4e697d8e9c034e964ac7b40227e054491547Glenn Kasten * Also destroys all resources associated with the AudioTrack. 22189fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project */ 2222799d743ee2ae5a25fe869a7f9c052acc029559fGlenn Kastenprotected: 2232799d743ee2ae5a25fe869a7f9c052acc029559fGlenn Kasten virtual ~AudioTrack(); 2242799d743ee2ae5a25fe869a7f9c052acc029559fGlenn Kastenpublic: 22589fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project 2269f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten /* Initialize an AudioTrack that was created using the AudioTrack() constructor. 2279f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten * Don't call set() more than once, or after the AudioTrack() constructors that take parameters. 22889fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project * Returned status (from utils/Errors.h) can be: 229362c4e697d8e9c034e964ac7b40227e054491547Glenn Kasten * - NO_ERROR: successful initialization 230362c4e697d8e9c034e964ac7b40227e054491547Glenn Kasten * - INVALID_OPERATION: AudioTrack is already initialized 23128b76b334f92a15a2be3cc9e2f7d229a3275d1acGlenn Kasten * - BAD_VALUE: invalid parameter (channelMask, format, sampleRate...) 23289fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project * - NO_INIT: audio server or audio hardware not initialized 23353cec22821072719ee02c856e9ac2dda2496c570Glenn Kasten * If status is not equal to NO_ERROR, don't call any other APIs on this AudioTrack. 234083d1c1492d496960d5b28f4664ff02101736677Glenn Kasten * If sharedBuffer is non-0, the frameCount parameter is ignored and 235083d1c1492d496960d5b28f4664ff02101736677Glenn Kasten * replaced by the shared buffer's total allocated size in frame units. 2369f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten * 2379f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten * Parameters not listed in the AudioTrack constructors above: 2389f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten * 2399f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten * threadCanCallJava: Whether callbacks are made from an attached thread and thus can call JNI. 240ad2f6dbe14e601ae69f3697bc17106f9fd7d59d6Glenn Kasten */ 241743732236ab84e94168378cdb293964861b1ed00Glenn Kasten status_t set(audio_stream_type_t streamType, 242743732236ab84e94168378cdb293964861b1ed00Glenn Kasten uint32_t sampleRate, 243743732236ab84e94168378cdb293964861b1ed00Glenn Kasten audio_format_t format, 244743732236ab84e94168378cdb293964861b1ed00Glenn Kasten audio_channel_mask_t channelMask, 245bce50bfc3846ab008bafa75c5d3f29fd7b5395f7Glenn Kasten size_t frameCount = 0, 2460ca3cf94c0dfc173ad7886ae162c4b67067539f6Eric Laurent audio_output_flags_t flags = AUDIO_OUTPUT_FLAG_NONE, 247a0d68338a88c2ddb4502f95017b546d603ef1ec7Glenn Kasten callback_t cbf = NULL, 248a0d68338a88c2ddb4502f95017b546d603ef1ec7Glenn Kasten void* user = NULL, 249838b3d8bafa4a781e277870dee4e0390165cff52Glenn Kasten uint32_t notificationFrames = 0, 25089fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project const sp<IMemory>& sharedBuffer = 0, 251be916aa1267e2e6b1c148f51d11bcbbc79cb864cEric Laurent bool threadCanCallJava = false, 252aea7ea06394bcb155972d82055d4ea59962e4051Glenn Kasten int sessionId = AUDIO_SESSION_ALLOCATE, 253ad3af3305f024bcbbd55c894a4995e449498e1baRichard Fitzgerald transfer_type transferType = TRANSFER_DEFAULT, 254462fd2fa9eef642b0574aa7409de0bde3fec8d43Marco Nelissen const audio_offload_info_t *offloadInfo = NULL, 255d457c970c8d08519cd77280a90b61ae1e342cfe3Marco Nelissen int uid = -1, 256faabb51ceef13bf1e3f692219ac410c1cd75d0deJean-Michel Trivi pid_t pid = -1, 257faabb51ceef13bf1e3f692219ac410c1cd75d0deJean-Michel Trivi audio_attributes_t* pAttributes = NULL); 25889fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project 25953cec22821072719ee02c856e9ac2dda2496c570Glenn Kasten /* Result of constructing the AudioTrack. This must be checked for successful initialization 260362c4e697d8e9c034e964ac7b40227e054491547Glenn Kasten * before using any AudioTrack API (except for set()), because using 26189fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project * an uninitialized AudioTrack produces undefined results. 26289fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project * See set() method above for possible return codes. 26389fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project */ 26401437b7cdaecf53acb46b50ff8b5d86b9d36eb20Glenn Kasten status_t initCheck() const { return mStatus; } 26589fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project 266362c4e697d8e9c034e964ac7b40227e054491547Glenn Kasten /* Returns this track's estimated latency in milliseconds. 26789fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project * This includes the latency due to AudioTrack buffer size, AudioMixer (if any) 26889fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project * and audio hardware driver. 26989fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project */ 270c9b2e20f7c9a71e07ef398152709c76079decbcdGlenn Kasten uint32_t latency() const { return mLatency; } 27189fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project 27299e53b86eebb605b70dd7591b89bf61a9414ed0eGlenn Kasten /* getters, see constructors and set() */ 27389fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project 27401437b7cdaecf53acb46b50ff8b5d86b9d36eb20Glenn Kasten audio_stream_type_t streamType() const { return mStreamType; } 27501437b7cdaecf53acb46b50ff8b5d86b9d36eb20Glenn Kasten audio_format_t format() const { return mFormat; } 276b9980659501d0428d65d8292f3c32da69d37fbd2Glenn Kasten 2779f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten /* Return frame size in bytes, which for linear PCM is 2789f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten * channelCount * (bit depth per channel / 8). 279b9980659501d0428d65d8292f3c32da69d37fbd2Glenn Kasten * channelCount is determined from channelMask, and bit depth comes from format. 280083d1c1492d496960d5b28f4664ff02101736677Glenn Kasten * For non-linear formats, the frame size is typically 1 byte. 281b9980659501d0428d65d8292f3c32da69d37fbd2Glenn Kasten */ 2829f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten size_t frameSize() const { return mFrameSize; } 283b9980659501d0428d65d8292f3c32da69d37fbd2Glenn Kasten 2849f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten uint32_t channelCount() const { return mChannelCount; } 285bce50bfc3846ab008bafa75c5d3f29fd7b5395f7Glenn Kasten size_t frameCount() const { return mFrameCount; } 28601437b7cdaecf53acb46b50ff8b5d86b9d36eb20Glenn Kasten 287083d1c1492d496960d5b28f4664ff02101736677Glenn Kasten /* Return the static buffer specified in constructor or set(), or 0 for streaming mode */ 28801437b7cdaecf53acb46b50ff8b5d86b9d36eb20Glenn Kasten sp<IMemory> sharedBuffer() const { return mSharedBuffer; } 28989fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project 29089fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project /* After it's created the track is not active. Call start() to 29189fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project * make it active. If set, the callback will start being called. 292083d1c1492d496960d5b28f4664ff02101736677Glenn Kasten * If the track was previously paused, volume is ramped up over the first mix buffer. 29389fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project */ 294b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald status_t start(); 29589fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project 296083d1c1492d496960d5b28f4664ff02101736677Glenn Kasten /* Stop a track. 297083d1c1492d496960d5b28f4664ff02101736677Glenn Kasten * In static buffer mode, the track is stopped immediately. 2989f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten * In streaming mode, the callback will cease being called. Note that obtainBuffer() still 2999f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten * works and will fill up buffers until the pool is exhausted, and then will return WOULD_BLOCK. 3009f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten * In streaming mode the stop does not occur immediately: any data remaining in the buffer 301083d1c1492d496960d5b28f4664ff02101736677Glenn Kasten * is first drained, mixed, and output, and only then is the track marked as stopped. 30289fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project */ 30389fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project void stop(); 30489fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project bool stopped() const; 30589fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project 3064bae3649d504d590a546717a8e49f96a30d9a745Glenn Kasten /* Flush a stopped or paused track. All previously buffered data is discarded immediately. 3074bae3649d504d590a546717a8e49f96a30d9a745Glenn Kasten * This has the effect of draining the buffers without mixing or output. 3084bae3649d504d590a546717a8e49f96a30d9a745Glenn Kasten * Flush is intended for streaming mode, for example before switching to non-contiguous content. 3094bae3649d504d590a546717a8e49f96a30d9a745Glenn Kasten * This function is a no-op if the track is not stopped or paused, or uses a static buffer. 31089fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project */ 31189fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project void flush(); 31289fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project 313083d1c1492d496960d5b28f4664ff02101736677Glenn Kasten /* Pause a track. After pause, the callback will cease being called and 3149f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten * obtainBuffer returns WOULD_BLOCK. Note that obtainBuffer() still works 31589fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project * and will fill up buffers until the pool is exhausted. 316083d1c1492d496960d5b28f4664ff02101736677Glenn Kasten * Volume is ramped down over the next mix buffer following the pause request, 317083d1c1492d496960d5b28f4664ff02101736677Glenn Kasten * and then the track is marked as paused. It can be resumed with ramp up by start(). 31889fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project */ 31989fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project void pause(); 32089fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project 321362c4e697d8e9c034e964ac7b40227e054491547Glenn Kasten /* Set volume for this track, mostly used for games' sound effects 322362c4e697d8e9c034e964ac7b40227e054491547Glenn Kasten * left and right volumes. Levels must be >= 0.0 and <= 1.0. 323b1c0993b215c5c3eebd1c6bafc22bba23d57a70bGlenn Kasten * This is the older API. New applications should use setVolume(float) when possible. 32489fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project */ 325be916aa1267e2e6b1c148f51d11bcbbc79cb864cEric Laurent status_t setVolume(float left, float right); 326b1c0993b215c5c3eebd1c6bafc22bba23d57a70bGlenn Kasten 327b1c0993b215c5c3eebd1c6bafc22bba23d57a70bGlenn Kasten /* Set volume for all channels. This is the preferred API for new applications, 328b1c0993b215c5c3eebd1c6bafc22bba23d57a70bGlenn Kasten * especially for multi-channel content. 329b1c0993b215c5c3eebd1c6bafc22bba23d57a70bGlenn Kasten */ 330b1c0993b215c5c3eebd1c6bafc22bba23d57a70bGlenn Kasten status_t setVolume(float volume); 33189fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project 332362c4e697d8e9c034e964ac7b40227e054491547Glenn Kasten /* Set the send level for this track. An auxiliary effect should be attached 333362c4e697d8e9c034e964ac7b40227e054491547Glenn Kasten * to the track with attachEffect(). Level must be >= 0.0 and <= 1.0. 334be916aa1267e2e6b1c148f51d11bcbbc79cb864cEric Laurent */ 3352beeb50b1bba9e92f6cacfeca37fe9fa9d36ead1Eric Laurent status_t setAuxEffectSendLevel(float level); 336a5224f319e2ba4b51ddb4287705ccf8d4b8ecc51Glenn Kasten void getAuxEffectSendLevel(float* level) const; 337be916aa1267e2e6b1c148f51d11bcbbc79cb864cEric Laurent 3389f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten /* Set source sample rate for this track in Hz, mostly used for games' sound effects 33989fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project */ 3403b16c766d1ae2cfd8487e8ffb2b23936fc0a8e17Glenn Kasten status_t setSampleRate(uint32_t sampleRate); 3413b16c766d1ae2cfd8487e8ffb2b23936fc0a8e17Glenn Kasten 3422b2165c75790050810460c8de3f414876bce4c0eGlenn Kasten /* Return current source sample rate in Hz */ 343a5224f319e2ba4b51ddb4287705ccf8d4b8ecc51Glenn Kasten uint32_t getSampleRate() const; 34489fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project 34589fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project /* Enables looping and sets the start and end points of looping. 346083d1c1492d496960d5b28f4664ff02101736677Glenn Kasten * Only supported for static buffer mode. 34789fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project * 34889fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project * Parameters: 34989fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project * 3509c6745f128648f6e0144b74ee593911a9fa10d51Glenn Kasten * loopStart: loop start in frames relative to start of buffer. 3519c6745f128648f6e0144b74ee593911a9fa10d51Glenn Kasten * loopEnd: loop end in frames relative to start of buffer. 352362c4e697d8e9c034e964ac7b40227e054491547Glenn Kasten * loopCount: number of loops to execute. Calling setLoop() with loopCount == 0 cancels any 3539c6745f128648f6e0144b74ee593911a9fa10d51Glenn Kasten * pending or active loop. loopCount == -1 means infinite looping. 35489fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project * 35589fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project * For proper operation the following condition must be respected: 3569c6745f128648f6e0144b74ee593911a9fa10d51Glenn Kasten * loopCount != 0 implies 0 <= loopStart < loopEnd <= frameCount(). 3579c6745f128648f6e0144b74ee593911a9fa10d51Glenn Kasten * 3589c6745f128648f6e0144b74ee593911a9fa10d51Glenn Kasten * If the loop period (loopEnd - loopStart) is too small for the implementation to support, 3599f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten * setLoop() will return BAD_VALUE. loopCount must be >= -1. 3609c6745f128648f6e0144b74ee593911a9fa10d51Glenn Kasten * 36189fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project */ 36289fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project status_t setLoop(uint32_t loopStart, uint32_t loopEnd, int loopCount); 36389fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project 364362c4e697d8e9c034e964ac7b40227e054491547Glenn Kasten /* Sets marker position. When playback reaches the number of frames specified, a callback with 365362c4e697d8e9c034e964ac7b40227e054491547Glenn Kasten * event type EVENT_MARKER is called. Calling setMarkerPosition with marker == 0 cancels marker 366083d1c1492d496960d5b28f4664ff02101736677Glenn Kasten * notification callback. To set a marker at a position which would compute as 0, 3672b2165c75790050810460c8de3f414876bce4c0eGlenn Kasten * a workaround is to set the marker at a nearby position such as ~0 or 1. 36885ab62c4b433df3f1a9826bed1c9bec07a86c750Glenn Kasten * If the AudioTrack has been opened with no callback function associated, the operation will 36985ab62c4b433df3f1a9826bed1c9bec07a86c750Glenn Kasten * fail. 37089fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project * 37189fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project * Parameters: 37289fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project * 373083d1c1492d496960d5b28f4664ff02101736677Glenn Kasten * marker: marker position expressed in wrapping (overflow) frame units, 374083d1c1492d496960d5b28f4664ff02101736677Glenn Kasten * like the return value of getPosition(). 37589fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project * 37689fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project * Returned status (from utils/Errors.h) can be: 37789fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project * - NO_ERROR: successful operation 37889fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project * - INVALID_OPERATION: the AudioTrack has no callback installed. 37989fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project */ 38089fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project status_t setMarkerPosition(uint32_t marker); 381a5224f319e2ba4b51ddb4287705ccf8d4b8ecc51Glenn Kasten status_t getMarkerPosition(uint32_t *marker) const; 38289fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project 383362c4e697d8e9c034e964ac7b40227e054491547Glenn Kasten /* Sets position update period. Every time the number of frames specified has been played, 384362c4e697d8e9c034e964ac7b40227e054491547Glenn Kasten * a callback with event type EVENT_NEW_POS is called. 385362c4e697d8e9c034e964ac7b40227e054491547Glenn Kasten * Calling setPositionUpdatePeriod with updatePeriod == 0 cancels new position notification 386362c4e697d8e9c034e964ac7b40227e054491547Glenn Kasten * callback. 38785ab62c4b433df3f1a9826bed1c9bec07a86c750Glenn Kasten * If the AudioTrack has been opened with no callback function associated, the operation will 38885ab62c4b433df3f1a9826bed1c9bec07a86c750Glenn Kasten * fail. 389083d1c1492d496960d5b28f4664ff02101736677Glenn Kasten * Extremely small values may be rounded up to a value the implementation can support. 39089fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project * 39189fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project * Parameters: 39289fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project * 39389fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project * updatePeriod: position update notification period expressed in frames. 39489fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project * 39589fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project * Returned status (from utils/Errors.h) can be: 39689fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project * - NO_ERROR: successful operation 39789fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project * - INVALID_OPERATION: the AudioTrack has no callback installed. 39889fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project */ 39989fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project status_t setPositionUpdatePeriod(uint32_t updatePeriod); 400a5224f319e2ba4b51ddb4287705ccf8d4b8ecc51Glenn Kasten status_t getPositionUpdatePeriod(uint32_t *updatePeriod) const; 40189fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project 4029c6745f128648f6e0144b74ee593911a9fa10d51Glenn Kasten /* Sets playback head position. 4039c6745f128648f6e0144b74ee593911a9fa10d51Glenn Kasten * Only supported for static buffer mode. 4049c6745f128648f6e0144b74ee593911a9fa10d51Glenn Kasten * 40589fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project * Parameters: 40689fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project * 4079c6745f128648f6e0144b74ee593911a9fa10d51Glenn Kasten * position: New playback head position in frames relative to start of buffer. 4089c6745f128648f6e0144b74ee593911a9fa10d51Glenn Kasten * 0 <= position <= frameCount(). Note that end of buffer is permitted, 4099c6745f128648f6e0144b74ee593911a9fa10d51Glenn Kasten * but will result in an immediate underrun if started. 41089fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project * 41189fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project * Returned status (from utils/Errors.h) can be: 41289fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project * - NO_ERROR: successful operation 413083d1c1492d496960d5b28f4664ff02101736677Glenn Kasten * - INVALID_OPERATION: the AudioTrack is not stopped or paused, or is streaming mode. 41485ab62c4b433df3f1a9826bed1c9bec07a86c750Glenn Kasten * - BAD_VALUE: The specified position is beyond the number of frames present in AudioTrack 41585ab62c4b433df3f1a9826bed1c9bec07a86c750Glenn Kasten * buffer 41689fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project */ 41789fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project status_t setPosition(uint32_t position); 418083d1c1492d496960d5b28f4664ff02101736677Glenn Kasten 419083d1c1492d496960d5b28f4664ff02101736677Glenn Kasten /* Return the total number of frames played since playback start. 420083d1c1492d496960d5b28f4664ff02101736677Glenn Kasten * The counter will wrap (overflow) periodically, e.g. every ~27 hours at 44.1 kHz. 421083d1c1492d496960d5b28f4664ff02101736677Glenn Kasten * It is reset to zero by flush(), reload(), and stop(). 4229f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten * 4239f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten * Parameters: 4249f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten * 4259f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten * position: Address where to return play head position. 4269f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten * 4279f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten * Returned status (from utils/Errors.h) can be: 4289f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten * - NO_ERROR: successful operation 4299f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten * - BAD_VALUE: position is NULL 430083d1c1492d496960d5b28f4664ff02101736677Glenn Kasten */ 4319f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten status_t getPosition(uint32_t *position) const; 43289fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project 4339c6745f128648f6e0144b74ee593911a9fa10d51Glenn Kasten /* For static buffer mode only, this returns the current playback position in frames 43402de89293b74ab1e9a77ce2367c5c499ab038968Glenn Kasten * relative to start of buffer. It is analogous to the position units used by 4359c6745f128648f6e0144b74ee593911a9fa10d51Glenn Kasten * setLoop() and setPosition(). After underrun, the position will be at end of buffer. 4369c6745f128648f6e0144b74ee593911a9fa10d51Glenn Kasten */ 4379c6745f128648f6e0144b74ee593911a9fa10d51Glenn Kasten status_t getBufferPosition(uint32_t *position); 4389c6745f128648f6e0144b74ee593911a9fa10d51Glenn Kasten 439362c4e697d8e9c034e964ac7b40227e054491547Glenn Kasten /* Forces AudioTrack buffer full condition. When playing a static buffer, this method avoids 44089fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project * rewriting the buffer before restarting playback after a stop. 44189fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project * This method must be called with the AudioTrack in paused or stopped state. 442083d1c1492d496960d5b28f4664ff02101736677Glenn Kasten * Not allowed in streaming mode. 44389fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project * 44489fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project * Returned status (from utils/Errors.h) can be: 44589fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project * - NO_ERROR: successful operation 446083d1c1492d496960d5b28f4664ff02101736677Glenn Kasten * - INVALID_OPERATION: the AudioTrack is not stopped or paused, or is streaming mode. 44789fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project */ 44889fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project status_t reload(); 44989fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project 450362c4e697d8e9c034e964ac7b40227e054491547Glenn Kasten /* Returns a handle on the audio output used by this AudioTrack. 451c2f1f07084818942352c6bbfb36af9b6b330eb4eEric Laurent * 452c2f1f07084818942352c6bbfb36af9b6b330eb4eEric Laurent * Parameters: 453c2f1f07084818942352c6bbfb36af9b6b330eb4eEric Laurent * none. 454c2f1f07084818942352c6bbfb36af9b6b330eb4eEric Laurent * 455c2f1f07084818942352c6bbfb36af9b6b330eb4eEric Laurent * Returned value: 456142f519aa1acd5804d111e60d100f170fed28405Glenn Kasten * handle on audio hardware output, or AUDIO_IO_HANDLE_NONE if the 457142f519aa1acd5804d111e60d100f170fed28405Glenn Kasten * track needed to be re-created but that failed 458c2f1f07084818942352c6bbfb36af9b6b330eb4eEric Laurent */ 45938e905b3cbba4da443d799b16999989781afc6d8Glenn Kasten audio_io_handle_t getOutput() const; 460c2f1f07084818942352c6bbfb36af9b6b330eb4eEric Laurent 461362c4e697d8e9c034e964ac7b40227e054491547Glenn Kasten /* Returns the unique session ID associated with this track. 462be916aa1267e2e6b1c148f51d11bcbbc79cb864cEric Laurent * 463be916aa1267e2e6b1c148f51d11bcbbc79cb864cEric Laurent * Parameters: 464be916aa1267e2e6b1c148f51d11bcbbc79cb864cEric Laurent * none. 465be916aa1267e2e6b1c148f51d11bcbbc79cb864cEric Laurent * 466be916aa1267e2e6b1c148f51d11bcbbc79cb864cEric Laurent * Returned value: 467362c4e697d8e9c034e964ac7b40227e054491547Glenn Kasten * AudioTrack session ID. 468be916aa1267e2e6b1c148f51d11bcbbc79cb864cEric Laurent */ 46901437b7cdaecf53acb46b50ff8b5d86b9d36eb20Glenn Kasten int getSessionId() const { return mSessionId; } 470be916aa1267e2e6b1c148f51d11bcbbc79cb864cEric Laurent 471362c4e697d8e9c034e964ac7b40227e054491547Glenn Kasten /* Attach track auxiliary output to specified effect. Use effectId = 0 472be916aa1267e2e6b1c148f51d11bcbbc79cb864cEric Laurent * to detach track from effect. 473be916aa1267e2e6b1c148f51d11bcbbc79cb864cEric Laurent * 474be916aa1267e2e6b1c148f51d11bcbbc79cb864cEric Laurent * Parameters: 475be916aa1267e2e6b1c148f51d11bcbbc79cb864cEric Laurent * 476be916aa1267e2e6b1c148f51d11bcbbc79cb864cEric Laurent * effectId: effectId obtained from AudioEffect::id(). 477be916aa1267e2e6b1c148f51d11bcbbc79cb864cEric Laurent * 478be916aa1267e2e6b1c148f51d11bcbbc79cb864cEric Laurent * Returned status (from utils/Errors.h) can be: 479be916aa1267e2e6b1c148f51d11bcbbc79cb864cEric Laurent * - NO_ERROR: successful operation 480be916aa1267e2e6b1c148f51d11bcbbc79cb864cEric Laurent * - INVALID_OPERATION: the effect is not an auxiliary effect. 481be916aa1267e2e6b1c148f51d11bcbbc79cb864cEric Laurent * - BAD_VALUE: The specified effect ID is invalid 482be916aa1267e2e6b1c148f51d11bcbbc79cb864cEric Laurent */ 483be916aa1267e2e6b1c148f51d11bcbbc79cb864cEric Laurent status_t attachAuxEffect(int effectId); 484be916aa1267e2e6b1c148f51d11bcbbc79cb864cEric Laurent 4859f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten /* Obtains a buffer of up to "audioBuffer->frameCount" empty slots for frames. 4869f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten * After filling these slots with data, the caller should release them with releaseBuffer(). 4879f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten * If the track buffer is not full, obtainBuffer() returns as many contiguous 4889f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten * [empty slots for] frames as are available immediately. 4899f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten * If the track buffer is full and track is stopped, obtainBuffer() returns WOULD_BLOCK 4909f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten * regardless of the value of waitCount. 4919f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten * If the track buffer is full and track is not stopped, obtainBuffer() blocks with a 4929f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten * maximum timeout based on waitCount; see chart below. 493ad2f6dbe14e601ae69f3697bc17106f9fd7d59d6Glenn Kasten * Buffers will be returned until the pool 49489fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project * is exhausted, at which point obtainBuffer() will either block 4959f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten * or return WOULD_BLOCK depending on the value of the "waitCount" 49689fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project * parameter. 4979f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten * Each sample is 16-bit signed PCM. 49899e53b86eebb605b70dd7591b89bf61a9414ed0eGlenn Kasten * 499083d1c1492d496960d5b28f4664ff02101736677Glenn Kasten * obtainBuffer() and releaseBuffer() are deprecated for direct use by applications, 500083d1c1492d496960d5b28f4664ff02101736677Glenn Kasten * which should use write() or callback EVENT_MORE_DATA instead. 501083d1c1492d496960d5b28f4664ff02101736677Glenn Kasten * 50299e53b86eebb605b70dd7591b89bf61a9414ed0eGlenn Kasten * Interpretation of waitCount: 50399e53b86eebb605b70dd7591b89bf61a9414ed0eGlenn Kasten * +n limits wait time to n * WAIT_PERIOD_MS, 50499e53b86eebb605b70dd7591b89bf61a9414ed0eGlenn Kasten * -1 causes an (almost) infinite wait time, 50599e53b86eebb605b70dd7591b89bf61a9414ed0eGlenn Kasten * 0 non-blocking. 50605d499958e4030938ed77a924ebdd9899f36752eGlenn Kasten * 50705d499958e4030938ed77a924ebdd9899f36752eGlenn Kasten * Buffer fields 50805d499958e4030938ed77a924ebdd9899f36752eGlenn Kasten * On entry: 50905d499958e4030938ed77a924ebdd9899f36752eGlenn Kasten * frameCount number of frames requested 51005d499958e4030938ed77a924ebdd9899f36752eGlenn Kasten * After error return: 51105d499958e4030938ed77a924ebdd9899f36752eGlenn Kasten * frameCount 0 51205d499958e4030938ed77a924ebdd9899f36752eGlenn Kasten * size 0 51322eb4e239fbe9103568147d566d7482e480350b8Glenn Kasten * raw undefined 51405d499958e4030938ed77a924ebdd9899f36752eGlenn Kasten * After successful return: 51505d499958e4030938ed77a924ebdd9899f36752eGlenn Kasten * frameCount actual number of frames available, <= number requested 51605d499958e4030938ed77a924ebdd9899f36752eGlenn Kasten * size actual number of bytes available 51705d499958e4030938ed77a924ebdd9899f36752eGlenn Kasten * raw pointer to the buffer 51889fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project */ 51989fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project 5209f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten /* FIXME Deprecated public API for TRANSFER_OBTAIN mode */ 5219f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten status_t obtainBuffer(Buffer* audioBuffer, int32_t waitCount) 5229f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten __attribute__((__deprecated__)); 52389fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project 5249f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kastenprivate: 52502de89293b74ab1e9a77ce2367c5c499ab038968Glenn Kasten /* If nonContig is non-NULL, it is an output parameter that will be set to the number of 5269f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten * additional non-contiguous frames that are available immediately. 5279f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten * FIXME We could pass an array of Buffers instead of only one Buffer to obtainBuffer(), 5289f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten * in case the requested amount of frames is in two or more non-contiguous regions. 5299f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten * FIXME requested and elapsed are both relative times. Consider changing to absolute time. 5309f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten */ 5319f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten status_t obtainBuffer(Buffer* audioBuffer, const struct timespec *requested, 5329f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten struct timespec *elapsed = NULL, size_t *nonContig = NULL); 5339f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kastenpublic: 53499e53b86eebb605b70dd7591b89bf61a9414ed0eGlenn Kasten 5359f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten /* Release a filled buffer of "audioBuffer->frameCount" frames for AudioFlinger to process. */ 5369f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // FIXME make private when obtainBuffer() for TRANSFER_OBTAIN is removed 53789fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project void releaseBuffer(Buffer* audioBuffer); 53889fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project 53989fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project /* As a convenience we provide a write() interface to the audio buffer. 5409f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten * Input parameter 'size' is in byte units. 54199e53b86eebb605b70dd7591b89bf61a9414ed0eGlenn Kasten * This is implemented on top of obtainBuffer/releaseBuffer. For best 54299e53b86eebb605b70dd7591b89bf61a9414ed0eGlenn Kasten * performance use callbacks. Returns actual number of bytes written >= 0, 54399e53b86eebb605b70dd7591b89bf61a9414ed0eGlenn Kasten * or one of the following negative status codes: 54402de89293b74ab1e9a77ce2367c5c499ab038968Glenn Kasten * INVALID_OPERATION AudioTrack is configured for static buffer or streaming mode 54599e53b86eebb605b70dd7591b89bf61a9414ed0eGlenn Kasten * BAD_VALUE size is invalid 5469f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten * WOULD_BLOCK when obtainBuffer() returns same, or 5479f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten * AudioTrack was stopped during the write 54899e53b86eebb605b70dd7591b89bf61a9414ed0eGlenn Kasten * or any other error code returned by IAudioTrack::start() or restoreTrack_l(). 549720ad9ddb2ac6b55b0dfbfcd2d8360151d8ac427Jean-Michel Trivi * Default behavior is to only return until all data has been transferred. Set 'blocking' to 550720ad9ddb2ac6b55b0dfbfcd2d8360151d8ac427Jean-Michel Trivi * false for the method to return immediately without waiting to try multiple times to write 551720ad9ddb2ac6b55b0dfbfcd2d8360151d8ac427Jean-Michel Trivi * the full content of the buffer. 55289fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project */ 553720ad9ddb2ac6b55b0dfbfcd2d8360151d8ac427Jean-Michel Trivi ssize_t write(const void* buffer, size_t size, bool blocking = true); 55489fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project 55589fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project /* 55689fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project * Dumps the state of an audio track. 55789fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project */ 5589f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten status_t dump(int fd, const Vector<String16>& args) const; 5599f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten 5609f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten /* 5619f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten * Return the total number of frames which AudioFlinger desired but were unavailable, 5629f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten * and thus which resulted in an underrun. Reset to zero by stop(). 5639f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten */ 5649f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten uint32_t getUnderrunFrames() const; 56589fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project 566ad3af3305f024bcbbd55c894a4995e449498e1baRichard Fitzgerald /* Get the flags */ 56723a7545c4de71e989c2d8ebf1d5b9dcf463c36a9Glenn Kasten audio_output_flags_t getFlags() const { AutoMutex _l(mLock); return mFlags; } 568ad3af3305f024bcbbd55c894a4995e449498e1baRichard Fitzgerald 569ad3af3305f024bcbbd55c894a4995e449498e1baRichard Fitzgerald /* Set parameters - only possible when using direct output */ 570ad3af3305f024bcbbd55c894a4995e449498e1baRichard Fitzgerald status_t setParameters(const String8& keyValuePairs); 571ad3af3305f024bcbbd55c894a4995e449498e1baRichard Fitzgerald 572ad3af3305f024bcbbd55c894a4995e449498e1baRichard Fitzgerald /* Get parameters */ 573ad3af3305f024bcbbd55c894a4995e449498e1baRichard Fitzgerald String8 getParameters(const String8& keys); 574ad3af3305f024bcbbd55c894a4995e449498e1baRichard Fitzgerald 575ce70374bf105f8a6160bf5dd70affea012b2a464Glenn Kasten /* Poll for a timestamp on demand. 576ce70374bf105f8a6160bf5dd70affea012b2a464Glenn Kasten * Use if EVENT_NEW_TIMESTAMP is not delivered often enough for your needs, 577ce70374bf105f8a6160bf5dd70affea012b2a464Glenn Kasten * or if you need to get the most recent timestamp outside of the event callback handler. 578ce70374bf105f8a6160bf5dd70affea012b2a464Glenn Kasten * Caution: calling this method too often may be inefficient; 579ce70374bf105f8a6160bf5dd70affea012b2a464Glenn Kasten * if you need a high resolution mapping between frame position and presentation time, 580ce70374bf105f8a6160bf5dd70affea012b2a464Glenn Kasten * consider implementing that at application level, based on the low resolution timestamps. 581ce70374bf105f8a6160bf5dd70affea012b2a464Glenn Kasten * Returns NO_ERROR if timestamp is valid. 582ce70374bf105f8a6160bf5dd70affea012b2a464Glenn Kasten */ 583ce70374bf105f8a6160bf5dd70affea012b2a464Glenn Kasten status_t getTimestamp(AudioTimestamp& timestamp); 584ce70374bf105f8a6160bf5dd70affea012b2a464Glenn Kasten 5854ff14bae91075eb274eb1c2975982358946e7e63John Grossmanprotected: 58689fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project /* copying audio tracks is not allowed */ 58789fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project AudioTrack(const AudioTrack& other); 58889fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project AudioTrack& operator = (const AudioTrack& other); 58989fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project 590faabb51ceef13bf1e3f692219ac410c1cd75d0deJean-Michel Trivi void setAttributesFromStreamType(audio_stream_type_t streamType); 591faabb51ceef13bf1e3f692219ac410c1cd75d0deJean-Michel Trivi void setStreamTypeFromAttributes(audio_attributes_t& aa); 592faabb51ceef13bf1e3f692219ac410c1cd75d0deJean-Michel Trivi /* paa is guaranteed non-NULL */ 593faabb51ceef13bf1e3f692219ac410c1cd75d0deJean-Michel Trivi bool isValidAttributes(const audio_attributes_t *paa); 594faabb51ceef13bf1e3f692219ac410c1cd75d0deJean-Michel Trivi 59589fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project /* a small internal class to handle the callback */ 59689fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project class AudioTrackThread : public Thread 59789fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project { 59889fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project public: 59989fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project AudioTrackThread(AudioTrack& receiver, bool bCanCallJava = false); 6003acbd053c842e76e1a40fc8a0bf62de87eebf00fGlenn Kasten 6013acbd053c842e76e1a40fc8a0bf62de87eebf00fGlenn Kasten // Do not call Thread::requestExitAndWait() without first calling requestExit(). 6023acbd053c842e76e1a40fc8a0bf62de87eebf00fGlenn Kasten // Thread::requestExitAndWait() is not virtual, and the implementation doesn't do enough. 6033acbd053c842e76e1a40fc8a0bf62de87eebf00fGlenn Kasten virtual void requestExit(); 6043acbd053c842e76e1a40fc8a0bf62de87eebf00fGlenn Kasten 6053acbd053c842e76e1a40fc8a0bf62de87eebf00fGlenn Kasten void pause(); // suspend thread from execution at next loop boundary 6063acbd053c842e76e1a40fc8a0bf62de87eebf00fGlenn Kasten void resume(); // allow thread to execute, if not requested to exit 6073acbd053c842e76e1a40fc8a0bf62de87eebf00fGlenn Kasten 60889fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project private: 6095a6cd224d07c05b496b6aca050ce5ecf96f125afGlenn Kasten void pauseInternal(nsecs_t ns = 0LL); 6105a6cd224d07c05b496b6aca050ce5ecf96f125afGlenn Kasten // like pause(), but only used internally within thread 6115a6cd224d07c05b496b6aca050ce5ecf96f125afGlenn Kasten 61289fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project friend class AudioTrack; 61389fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project virtual bool threadLoop(); 6149f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten AudioTrack& mReceiver; 6159f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten virtual ~AudioTrackThread(); 6163acbd053c842e76e1a40fc8a0bf62de87eebf00fGlenn Kasten Mutex mMyLock; // Thread::mLock is private 6173acbd053c842e76e1a40fc8a0bf62de87eebf00fGlenn Kasten Condition mMyCond; // Thread::mThreadExitedCondition is private 6185a6cd224d07c05b496b6aca050ce5ecf96f125afGlenn Kasten bool mPaused; // whether thread is requested to pause at next loop entry 6195a6cd224d07c05b496b6aca050ce5ecf96f125afGlenn Kasten bool mPausedInt; // whether thread internally requests pause 6205a6cd224d07c05b496b6aca050ce5ecf96f125afGlenn Kasten nsecs_t mPausedNs; // if mPausedInt then associated timeout, otherwise ignored 621598de6c701e989385eeffa7c5dfd61f0459a2631Glenn Kasten bool mIgnoreNextPausedInt; // whether to ignore next mPausedInt request 62289fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project }; 62389fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project 62499e53b86eebb605b70dd7591b89bf61a9414ed0eGlenn Kasten // body of AudioTrackThread::threadLoop() 6259f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // returns the maximum amount of time before we would like to run again, where: 6269f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // 0 immediately 6279f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // > 0 no later than this many nanoseconds from now 6289f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // NS_WHENEVER still active but no particular deadline 6299f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // NS_INACTIVE inactive so don't run again until re-started 6309f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // NS_NEVER never again 6319f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten static const nsecs_t NS_WHENEVER = -1, NS_INACTIVE = -2, NS_NEVER = -3; 6327c7be1e05634d96d08210efb4bdeb012ffba440dGlenn Kasten nsecs_t processAudioBuffer(); 633ea7939a079b3600cab955760839b021326f8cfc3Glenn Kasten 63423a7545c4de71e989c2d8ebf1d5b9dcf463c36a9Glenn Kasten bool isOffloaded() const; 63523a7545c4de71e989c2d8ebf1d5b9dcf463c36a9Glenn Kasten 636d5ed6e88a9bea1879e41d7defaf1edea7c09f554Glenn Kasten // caller must hold lock on mLock for all _l methods 637ad3af3305f024bcbbd55c894a4995e449498e1baRichard Fitzgerald 638363fb75db26698cbb50065506e0c80b61d1fbf92Glenn Kasten status_t createTrack_l(size_t epoch); 6394bae3649d504d590a546717a8e49f96a30d9a745Glenn Kasten 6409f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // can only be called when mState != STATE_ACTIVE 6411703cdfee717b1b312bf8979816a9e2f16a82e5dEric Laurent void flush_l(); 6424bae3649d504d590a546717a8e49f96a30d9a745Glenn Kasten 6439f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten void setLoop_l(uint32_t loopStart, uint32_t loopEnd, int loopCount); 64489fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project 6459f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // FIXME enum is faster than strcmp() for parameter 'from' 6469f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten status_t restoreTrack_l(const char *from); 6479f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten 64823a7545c4de71e989c2d8ebf1d5b9dcf463c36a9Glenn Kasten bool isOffloaded_l() const 649b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald { return (mFlags & AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD) != 0; } 650b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald 65138e905b3cbba4da443d799b16999989781afc6d8Glenn Kasten // Next 4 fields may be changed if IAudioTrack is re-created, but always != 0 65289fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project sp<IAudioTrack> mAudioTrack; 65389fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project sp<IMemory> mCblkMemory; 6549f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten audio_track_cblk_t* mCblk; // re-load after mLock.unlock() 65538e905b3cbba4da443d799b16999989781afc6d8Glenn Kasten audio_io_handle_t mOutput; // returned by AudioSystem::getOutput() 65689fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project 6579f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten sp<AudioTrackThread> mAudioTrackThread; 658b5ccb2d99b2af400c70777a6452f090ac14f5a96Glenn Kasten 65989fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project float mVolume[2]; 660be916aa1267e2e6b1c148f51d11bcbbc79cb864cEric Laurent float mSendLevel; 6616f59db12a64f4496866952a251122ccb77a36c6bEric Laurent mutable uint32_t mSampleRate; // mutable because getSampleRate() can update it. 662396fabdb6efcdac5aea3d9f559d1beedf6a4cedcGlenn Kasten size_t mFrameCount; // corresponds to current IAudioTrack, value is 663396fabdb6efcdac5aea3d9f559d1beedf6a4cedcGlenn Kasten // reported back by AudioFlinger to the client 664396fabdb6efcdac5aea3d9f559d1beedf6a4cedcGlenn Kasten size_t mReqFrameCount; // frame count to request the first or next time 665396fabdb6efcdac5aea3d9f559d1beedf6a4cedcGlenn Kasten // a new IAudioTrack is needed, non-decreasing 66689fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project 6679f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // constant after constructor or set() 66860a839204713e0f8258d082af83262b1eb33a6c3Glenn Kasten audio_format_t mFormat; // as requested by client, not forced to 16-bit 669fff6d715a8db0daf08a50634f242c40268de3d49Glenn Kasten audio_stream_type_t mStreamType; 670e4756fe3a387615acb63c6a05788c8db9b5786cbGlenn Kasten uint32_t mChannelCount; 67128b76b334f92a15a2be3cc9e2f7d229a3275d1acGlenn Kasten audio_channel_mask_t mChannelMask; 672dd5f4c8c4059f890e81b28b026a688febb4e1dd9Glenn Kasten sp<IMemory> mSharedBuffer; 6739f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten transfer_type mTransfer; 674b5ccb2d99b2af400c70777a6452f090ac14f5a96Glenn Kasten audio_offload_info_t mOffloadInfoCopy; 675b5ccb2d99b2af400c70777a6452f090ac14f5a96Glenn Kasten const audio_offload_info_t* mOffloadInfo; 676faabb51ceef13bf1e3f692219ac410c1cd75d0deJean-Michel Trivi audio_attributes_t mAttributes; 67783a0382dc17364567667a4e6135db43f5bd92efcGlenn Kasten 6789f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // mFrameSize is equal to mFrameSizeAF for non-PCM or 16-bit PCM data. For 8-bit PCM data, it's 6799f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // twice as large as mFrameSize because data is expanded to 16-bit before it's stored in buffer. 68083a0382dc17364567667a4e6135db43f5bd92efcGlenn Kasten size_t mFrameSize; // app-level frame size 68183a0382dc17364567667a4e6135db43f5bd92efcGlenn Kasten size_t mFrameSizeAF; // AudioFlinger frame size 68283a0382dc17364567667a4e6135db43f5bd92efcGlenn Kasten 68389fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project status_t mStatus; 68489fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project 6859f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // can change dynamically when IAudioTrack invalidated 6869f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten uint32_t mLatency; // in ms 6879f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten 6889f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // Indicates the current track state. Protected by mLock. 6899f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten enum State { 6909f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten STATE_ACTIVE, 6919f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten STATE_STOPPED, 6929f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten STATE_PAUSED, 693b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald STATE_PAUSED_STOPPING, 6949f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten STATE_FLUSHED, 695b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald STATE_STOPPING, 6969f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } mState; 69789fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project 6986ca126d5c83386941c5cb9600099e5510e4430d6Glenn Kasten // for client callback handler 69999e53b86eebb605b70dd7591b89bf61a9414ed0eGlenn Kasten callback_t mCbf; // callback handler for events, or NULL 7006ca126d5c83386941c5cb9600099e5510e4430d6Glenn Kasten void* mUserData; 701ad2f6dbe14e601ae69f3697bc17106f9fd7d59d6Glenn Kasten 702ad2f6dbe14e601ae69f3697bc17106f9fd7d59d6Glenn Kasten // for notification APIs 70385ab62c4b433df3f1a9826bed1c9bec07a86c750Glenn Kasten uint32_t mNotificationFramesReq; // requested number of frames between each 7049f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // notification callback, 7059f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // at initial source sample rate 70685ab62c4b433df3f1a9826bed1c9bec07a86c750Glenn Kasten uint32_t mNotificationFramesAct; // actual number of frames between each 7079f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // notification callback, 7089f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // at initial source sample rate 7092fc14730e4697a6f456b4631549c9981f6b0b115Glenn Kasten bool mRefreshRemaining; // processAudioBuffer() should refresh 7102fc14730e4697a6f456b4631549c9981f6b0b115Glenn Kasten // mRemainingFrames and mRetryOnPartialBuffer 7119f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten 7129f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // These are private to processAudioBuffer(), and are not protected by a lock 7139f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten uint32_t mRemainingFrames; // number of frames to request in obtainBuffer() 7149f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten bool mRetryOnPartialBuffer; // sleep and retry after partial obtainBuffer() 715b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald uint32_t mObservedSequence; // last observed value of mSequence 7169f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten 7179f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten uint32_t mLoopPeriod; // in frames, zero means looping is disabled 7182b2165c75790050810460c8de3f414876bce4c0eGlenn Kasten 719083d1c1492d496960d5b28f4664ff02101736677Glenn Kasten uint32_t mMarkerPosition; // in wrapping (overflow) frame units 7202c22aeb65e801f663a754d043062f85e49f77739Jean-Michel Trivi bool mMarkerReached; 721ad2f6dbe14e601ae69f3697bc17106f9fd7d59d6Glenn Kasten uint32_t mNewPosition; // in frames 7229f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten uint32_t mUpdatePeriod; // in frames, zero means no EVENT_NEW_POS 723ad2f6dbe14e601ae69f3697bc17106f9fd7d59d6Glenn Kasten 7240ca3cf94c0dfc173ad7886ae162c4b67067539f6Eric Laurent audio_output_flags_t mFlags; 72523a7545c4de71e989c2d8ebf1d5b9dcf463c36a9Glenn Kasten // const after set(), except for bits AUDIO_OUTPUT_FLAG_FAST and AUDIO_OUTPUT_FLAG_OFFLOAD. 72623a7545c4de71e989c2d8ebf1d5b9dcf463c36a9Glenn Kasten // mLock must be held to read or write those bits reliably. 72723a7545c4de71e989c2d8ebf1d5b9dcf463c36a9Glenn Kasten 728be916aa1267e2e6b1c148f51d11bcbbc79cb864cEric Laurent int mSessionId; 7292beeb50b1bba9e92f6cacfeca37fe9fa9d36ead1Eric Laurent int mAuxEffectId; 730d5ed6e88a9bea1879e41d7defaf1edea7c09f554Glenn Kasten 7319a2aaf927e56a4b4acab23ef16b3f133a9f48a63Glenn Kasten mutable Mutex mLock; 732d5ed6e88a9bea1879e41d7defaf1edea7c09f554Glenn Kasten 7334ff14bae91075eb274eb1c2975982358946e7e63John Grossman bool mIsTimed; 734879135196fd1c97deefc538c888037c56c2879a7Glenn Kasten int mPreviousPriority; // before start() 735a636433cbd09c0708b85f337ef45c0cdef3bcb4dGlenn Kasten SchedPolicy mPreviousSchedulingGroup; 736a07f17ca46db04c9d5d9e7d6b2878db59ca2b9eaGlenn Kasten bool mAwaitBoost; // thread should wait for priority boost before running 7379f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten 7389f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // The proxy should only be referenced while a lock is held because the proxy isn't 7399f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // multi-thread safe, especially the SingleStateQueue part of the proxy. 7409f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // An exception is that a blocking ClientProxy::obtainBuffer() may be called without a lock, 7419f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // provided that the caller also holds an extra reference to the proxy and shared memory to keep 7429f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // them around in case they are replaced during the obtainBuffer(). 7439f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten sp<StaticAudioTrackClientProxy> mStaticProxy; // for type safety only 7449f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten sp<AudioTrackClientProxy> mProxy; // primary owner of the memory 7459f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten 7469f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten bool mInUnderrun; // whether track is currently in underrun state 7477064fd2dcdfeafea53cd5a992bb78c413542f29fHaynes Mathew George uint32_t mPausedPosition; 7489f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten 7499f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kastenprivate: 7509f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten class DeathNotifier : public IBinder::DeathRecipient { 7519f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten public: 7529f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten DeathNotifier(AudioTrack* audioTrack) : mAudioTrack(audioTrack) { } 7539f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten protected: 7549f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten virtual void binderDied(const wp<IBinder>& who); 7559f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten private: 7569f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten const wp<AudioTrack> mAudioTrack; 7579f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten }; 7589f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten 7599f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten sp<DeathNotifier> mDeathNotifier; 7609f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten uint32_t mSequence; // incremented for each new IAudioTrack attempt 761462fd2fa9eef642b0574aa7409de0bde3fec8d43Marco Nelissen int mClientUid; 762d457c970c8d08519cd77280a90b61ae1e342cfe3Marco Nelissen pid_t mClientPid; 76389fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project}; 76489fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project 7654ff14bae91075eb274eb1c2975982358946e7e63John Grossmanclass TimedAudioTrack : public AudioTrack 7664ff14bae91075eb274eb1c2975982358946e7e63John Grossman{ 7674ff14bae91075eb274eb1c2975982358946e7e63John Grossmanpublic: 7684ff14bae91075eb274eb1c2975982358946e7e63John Grossman TimedAudioTrack(); 7694ff14bae91075eb274eb1c2975982358946e7e63John Grossman 7704ff14bae91075eb274eb1c2975982358946e7e63John Grossman /* allocate a shared memory buffer that can be passed to queueTimedBuffer */ 7714ff14bae91075eb274eb1c2975982358946e7e63John Grossman status_t allocateTimedBuffer(size_t size, sp<IMemory>* buffer); 7724ff14bae91075eb274eb1c2975982358946e7e63John Grossman 7734ff14bae91075eb274eb1c2975982358946e7e63John Grossman /* queue a buffer obtained via allocateTimedBuffer for playback at the 774c3ae93f21280859086ae371428ffd32f39e76d50Glenn Kasten given timestamp. PTS units are microseconds on the media time timeline. 7754ff14bae91075eb274eb1c2975982358946e7e63John Grossman The media time transform (set with setMediaTimeTransform) set by the 7764ff14bae91075eb274eb1c2975982358946e7e63John Grossman audio producer will handle converting from media time to local time 7774ff14bae91075eb274eb1c2975982358946e7e63John Grossman (perhaps going through the common time timeline in the case of 7784ff14bae91075eb274eb1c2975982358946e7e63John Grossman synchronized multiroom audio case) */ 7794ff14bae91075eb274eb1c2975982358946e7e63John Grossman status_t queueTimedBuffer(const sp<IMemory>& buffer, int64_t pts); 7804ff14bae91075eb274eb1c2975982358946e7e63John Grossman 7814ff14bae91075eb274eb1c2975982358946e7e63John Grossman /* define a transform between media time and either common time or 7824ff14bae91075eb274eb1c2975982358946e7e63John Grossman local time */ 7834ff14bae91075eb274eb1c2975982358946e7e63John Grossman enum TargetTimeline {LOCAL_TIME, COMMON_TIME}; 7844ff14bae91075eb274eb1c2975982358946e7e63John Grossman status_t setMediaTimeTransform(const LinearTransform& xform, 7854ff14bae91075eb274eb1c2975982358946e7e63John Grossman TargetTimeline target); 7864ff14bae91075eb274eb1c2975982358946e7e63John Grossman}; 78789fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project 78889fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project}; // namespace android 78989fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project 79089fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project#endif // ANDROID_AUDIOTRACK_H 791