AudioTrack.h revision 396fabdb6efcdac5aea3d9f559d1beedf6a4cedc
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 3089fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Projectclass 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 enum channel_index { 4089fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project MONO = 0, 4189fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project LEFT = 0, 4289fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project RIGHT = 1 4389fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project }; 4489fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project 459f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten /* Events used by AudioTrack callback function (callback_t). 46ad2f6dbe14e601ae69f3697bc17106f9fd7d59d6Glenn Kasten * Keep in sync with frameworks/base/media/java/android/media/AudioTrack.java NATIVE_EVENT_*. 4789fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project */ 4889fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project enum event_type { 49083d1c1492d496960d5b28f4664ff02101736677Glenn Kasten EVENT_MORE_DATA = 0, // Request to write more data to buffer. 50083d1c1492d496960d5b28f4664ff02101736677Glenn Kasten // If this event is delivered but the callback handler 51083d1c1492d496960d5b28f4664ff02101736677Glenn Kasten // does not want to write more data, the handler must explicitly 52083d1c1492d496960d5b28f4664ff02101736677Glenn Kasten // ignore the event by setting frameCount to zero. 53083d1c1492d496960d5b28f4664ff02101736677Glenn Kasten EVENT_UNDERRUN = 1, // Buffer underrun occurred. 5485ab62c4b433df3f1a9826bed1c9bec07a86c750Glenn Kasten EVENT_LOOP_END = 2, // Sample loop end was reached; playback restarted from 5585ab62c4b433df3f1a9826bed1c9bec07a86c750Glenn Kasten // loop start if loop count was not 0. 5685ab62c4b433df3f1a9826bed1c9bec07a86c750Glenn Kasten EVENT_MARKER = 3, // Playback head is at the specified marker position 5785ab62c4b433df3f1a9826bed1c9bec07a86c750Glenn Kasten // (See setMarkerPosition()). 5885ab62c4b433df3f1a9826bed1c9bec07a86c750Glenn Kasten EVENT_NEW_POS = 4, // Playback head is at a new position 5985ab62c4b433df3f1a9826bed1c9bec07a86c750Glenn Kasten // (See setPositionUpdatePeriod()). 609f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten EVENT_BUFFER_END = 5, // Playback head is at the end of the buffer. 619f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // Not currently used by android.media.AudioTrack. 629f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten EVENT_NEW_IAUDIOTRACK = 6, // IAudioTrack was re-created, either due to re-routing and 639f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // voluntary invalidation by mediaserver, or mediaserver crash. 64ad3af3305f024bcbbd55c894a4995e449498e1baRichard Fitzgerald EVENT_STREAM_END = 7, // Sent after all the buffers queued in AF and HW are played 65ad3af3305f024bcbbd55c894a4995e449498e1baRichard Fitzgerald // back (after stop is called) 66ce70374bf105f8a6160bf5dd70affea012b2a464Glenn Kasten EVENT_NEW_TIMESTAMP = 8, // Delivered periodically and when there's a significant change 67ce70374bf105f8a6160bf5dd70affea012b2a464Glenn Kasten // in the mapping from frame position to presentation time. 68ce70374bf105f8a6160bf5dd70affea012b2a464Glenn Kasten // See AudioTimestamp for the information included with event. 6989fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project }; 7089fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project 7199e53b86eebb605b70dd7591b89bf61a9414ed0eGlenn Kasten /* Client should declare Buffer on the stack and pass address to obtainBuffer() 7299e53b86eebb605b70dd7591b89bf61a9414ed0eGlenn Kasten * and releaseBuffer(). See also callback_t for EVENT_MORE_DATA. 7389fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project */ 7489fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project 7589fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project class Buffer 7689fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project { 7789fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project public: 789f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // FIXME use m prefix 7999e53b86eebb605b70dd7591b89bf61a9414ed0eGlenn Kasten size_t frameCount; // number of sample frames corresponding to size; 8099e53b86eebb605b70dd7591b89bf61a9414ed0eGlenn Kasten // on input it is the number of frames desired, 8199e53b86eebb605b70dd7591b89bf61a9414ed0eGlenn Kasten // on output is the number of frames actually filled 82fb1fdc9d6603aa228362e7349451f6455c9849c2Glenn Kasten // (currently ignored, but will make the primary field in future) 8399e53b86eebb605b70dd7591b89bf61a9414ed0eGlenn Kasten 849f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten size_t size; // input/output in bytes == frameCount * frameSize 85fb1fdc9d6603aa228362e7349451f6455c9849c2Glenn Kasten // on output is the number of bytes actually filled 869f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // FIXME this is redundant with respect to frameCount, 879f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // and TRANSFER_OBTAIN mode is broken for 8-bit data 889f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // since we don't define the frame format 899f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten 9089fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project union { 9189fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project void* raw; 929f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten short* i16; // signed 16-bit 939f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten int8_t* i8; // unsigned 8-bit, offset by 0x80 9489fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project }; 9589fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project }; 9689fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project 9789fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project /* As a convenience, if a callback is supplied, a handler thread 9889fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project * is automatically created with the appropriate priority. This thread 9999e53b86eebb605b70dd7591b89bf61a9414ed0eGlenn Kasten * invokes the callback when a new buffer becomes available or various conditions occur. 10089fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project * Parameters: 10189fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project * 10289fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project * event: type of event notified (see enum AudioTrack::event_type). 10389fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project * user: Pointer to context for use by the callback receiver. 10489fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project * info: Pointer to optional parameter according to event type: 10589fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project * - EVENT_MORE_DATA: pointer to AudioTrack::Buffer struct. The callback must not write 10699e53b86eebb605b70dd7591b89bf61a9414ed0eGlenn Kasten * more bytes than indicated by 'size' field and update 'size' if fewer bytes are 10799e53b86eebb605b70dd7591b89bf61a9414ed0eGlenn Kasten * written. 10889fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project * - EVENT_UNDERRUN: unused. 10989fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project * - EVENT_LOOP_END: pointer to an int indicating the number of loops remaining. 1109f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten * - EVENT_MARKER: pointer to const uint32_t containing the marker position in frames. 1119f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten * - EVENT_NEW_POS: pointer to const uint32_t containing the new position in frames. 11289fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project * - EVENT_BUFFER_END: unused. 1139f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten * - EVENT_NEW_IAUDIOTRACK: unused. 114ce70374bf105f8a6160bf5dd70affea012b2a464Glenn Kasten * - EVENT_STREAM_END: unused. 115ce70374bf105f8a6160bf5dd70affea012b2a464Glenn Kasten * - EVENT_NEW_TIMESTAMP: pointer to const AudioTimestamp. 11689fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project */ 11789fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project 118d217a8c4632b3e3065f8c2a26b9ce4dc4c97171fGlenn Kasten typedef void (*callback_t)(int event, void* user, void *info); 11989fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project 12033005a932c60a0780fe9b7307d5988df3d9f6c26Chia-chi Yeh /* Returns the minimum frame count required for the successful creation of 12133005a932c60a0780fe9b7307d5988df3d9f6c26Chia-chi Yeh * an AudioTrack object. 12233005a932c60a0780fe9b7307d5988df3d9f6c26Chia-chi Yeh * Returned status (from utils/Errors.h) can be: 12333005a932c60a0780fe9b7307d5988df3d9f6c26Chia-chi Yeh * - NO_ERROR: successful operation 12433005a932c60a0780fe9b7307d5988df3d9f6c26Chia-chi Yeh * - NO_INIT: audio server or audio hardware not initialized 1256ca126d5c83386941c5cb9600099e5510e4430d6Glenn Kasten * - BAD_VALUE: unsupported configuration 12666a0467fdddada4caabd0f0a999fbb367fea7beeGlenn Kasten * frameCount is guaranteed to be non-zero if status is NO_ERROR, 12766a0467fdddada4caabd0f0a999fbb367fea7beeGlenn Kasten * and is undefined otherwise. 12833005a932c60a0780fe9b7307d5988df3d9f6c26Chia-chi Yeh */ 12933005a932c60a0780fe9b7307d5988df3d9f6c26Chia-chi Yeh 1309f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten static status_t getMinFrameCount(size_t* frameCount, 1319f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten audio_stream_type_t streamType, 1329f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten uint32_t sampleRate); 1339f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten 1349f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten /* How data is transferred to AudioTrack 1359f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten */ 1369f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten enum transfer_type { 1379f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten TRANSFER_DEFAULT, // not specified explicitly; determine from the other parameters 1389f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten TRANSFER_CALLBACK, // callback EVENT_MORE_DATA 1399f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten TRANSFER_OBTAIN, // FIXME deprecated: call obtainBuffer() and releaseBuffer() 1409f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten TRANSFER_SYNC, // synchronous write() 1419f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten TRANSFER_SHARED, // shared memory 1429f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten }; 14333005a932c60a0780fe9b7307d5988df3d9f6c26Chia-chi Yeh 14489fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project /* Constructs an uninitialized AudioTrack. No connection with 145083d1c1492d496960d5b28f4664ff02101736677Glenn Kasten * AudioFlinger takes place. Use set() after this. 14689fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project */ 14789fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project AudioTrack(); 14889fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project 149ad2f6dbe14e601ae69f3697bc17106f9fd7d59d6Glenn Kasten /* Creates an AudioTrack object and registers it with AudioFlinger. 15089fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project * Once created, the track needs to be started before it can be used. 151083d1c1492d496960d5b28f4664ff02101736677Glenn Kasten * Unspecified values are set to appropriate default values. 152083d1c1492d496960d5b28f4664ff02101736677Glenn Kasten * With this constructor, the track is configured for streaming mode. 153083d1c1492d496960d5b28f4664ff02101736677Glenn Kasten * Data to be rendered is supplied by write() or by the callback EVENT_MORE_DATA. 1549f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten * Intermixing a combination of write() and non-ignored EVENT_MORE_DATA is not allowed. 15589fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project * 15689fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project * Parameters: 15789fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project * 15889fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project * streamType: Select the type of audio stream this track is attached to 159fce7a473248381cc83a01855f92581077d3c9ee2Dima Zavin * (e.g. AUDIO_STREAM_MUSIC). 1609f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten * sampleRate: Data source sampling rate in Hz. 161fce7a473248381cc83a01855f92581077d3c9ee2Dima Zavin * format: Audio format (e.g AUDIO_FORMAT_PCM_16_BIT for signed 16289fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project * 16 bits per sample). 16328b76b334f92a15a2be3cc9e2f7d229a3275d1acGlenn Kasten * channelMask: Channel mask. 164d8d6185c978c9b27ca69e7791785e0983ed9e8b8Eric Laurent * frameCount: Minimum size of track PCM buffer in frames. This defines the 165ad2f6dbe14e601ae69f3697bc17106f9fd7d59d6Glenn Kasten * application's contribution to the 166d8d6185c978c9b27ca69e7791785e0983ed9e8b8Eric Laurent * latency of the track. The actual size selected by the AudioTrack could be 167d8d6185c978c9b27ca69e7791785e0983ed9e8b8Eric Laurent * larger if the requested size is not compatible with current audio HAL 168083d1c1492d496960d5b28f4664ff02101736677Glenn Kasten * configuration. Zero means to use a default value. 1690ca3cf94c0dfc173ad7886ae162c4b67067539f6Eric Laurent * flags: See comments on audio_output_flags_t in <system/audio.h>. 17089fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project * cbf: Callback function. If not null, this function is called periodically 171083d1c1492d496960d5b28f4664ff02101736677Glenn Kasten * to provide new data and inform of marker, position updates, etc. 172362c4e697d8e9c034e964ac7b40227e054491547Glenn Kasten * user: Context for use by the callback receiver. 17389fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project * notificationFrames: The callback function is called each time notificationFrames PCM 174362c4e697d8e9c034e964ac7b40227e054491547Glenn Kasten * frames have been consumed from track input buffer. 1759f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten * This is expressed in units of frames at the initial source sample rate. 176362c4e697d8e9c034e964ac7b40227e054491547Glenn Kasten * sessionId: Specific session ID, or zero to use default. 1779f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten * transferType: How data is transferred to AudioTrack. 1789f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten * threadCanCallJava: Not present in parameter list, and so is fixed at false. 17989fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project */ 18089fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project 181fff6d715a8db0daf08a50634f242c40268de3d49Glenn Kasten AudioTrack( audio_stream_type_t streamType, 182743732236ab84e94168378cdb293964861b1ed00Glenn Kasten uint32_t sampleRate, 183743732236ab84e94168378cdb293964861b1ed00Glenn Kasten audio_format_t format, 184743732236ab84e94168378cdb293964861b1ed00Glenn Kasten audio_channel_mask_t, 18589fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project int frameCount = 0, 1860ca3cf94c0dfc173ad7886ae162c4b67067539f6Eric Laurent audio_output_flags_t flags = AUDIO_OUTPUT_FLAG_NONE, 187a0d68338a88c2ddb4502f95017b546d603ef1ec7Glenn Kasten callback_t cbf = NULL, 188a0d68338a88c2ddb4502f95017b546d603ef1ec7Glenn Kasten void* user = NULL, 189be916aa1267e2e6b1c148f51d11bcbbc79cb864cEric Laurent int notificationFrames = 0, 1909f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten int sessionId = 0, 191ad3af3305f024bcbbd55c894a4995e449498e1baRichard Fitzgerald transfer_type transferType = TRANSFER_DEFAULT, 192462fd2fa9eef642b0574aa7409de0bde3fec8d43Marco Nelissen const audio_offload_info_t *offloadInfo = NULL, 193462fd2fa9eef642b0574aa7409de0bde3fec8d43Marco Nelissen int uid = -1); 19489fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project 195083d1c1492d496960d5b28f4664ff02101736677Glenn Kasten /* Creates an audio track and registers it with AudioFlinger. 196083d1c1492d496960d5b28f4664ff02101736677Glenn Kasten * With this constructor, the track is configured for static buffer mode. 197083d1c1492d496960d5b28f4664ff02101736677Glenn Kasten * The format must not be 8-bit linear PCM. 198083d1c1492d496960d5b28f4664ff02101736677Glenn Kasten * Data to be rendered is passed in a shared memory buffer 199083d1c1492d496960d5b28f4664ff02101736677Glenn Kasten * identified by the argument sharedBuffer, which must be non-0. 200083d1c1492d496960d5b28f4664ff02101736677Glenn Kasten * The memory should be initialized to the desired data before calling start(). 2014bae3649d504d590a546717a8e49f96a30d9a745Glenn Kasten * The write() method is not supported in this case. 202362c4e697d8e9c034e964ac7b40227e054491547Glenn Kasten * It is recommended to pass a callback function to be notified of playback end by an 20389fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project * EVENT_UNDERRUN event. 20489fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project */ 20589fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project 206fff6d715a8db0daf08a50634f242c40268de3d49Glenn Kasten AudioTrack( audio_stream_type_t streamType, 207743732236ab84e94168378cdb293964861b1ed00Glenn Kasten uint32_t sampleRate, 208743732236ab84e94168378cdb293964861b1ed00Glenn Kasten audio_format_t format, 209743732236ab84e94168378cdb293964861b1ed00Glenn Kasten audio_channel_mask_t channelMask, 210743732236ab84e94168378cdb293964861b1ed00Glenn Kasten const sp<IMemory>& sharedBuffer, 2110ca3cf94c0dfc173ad7886ae162c4b67067539f6Eric Laurent audio_output_flags_t flags = AUDIO_OUTPUT_FLAG_NONE, 212a0d68338a88c2ddb4502f95017b546d603ef1ec7Glenn Kasten callback_t cbf = NULL, 213a0d68338a88c2ddb4502f95017b546d603ef1ec7Glenn Kasten void* user = NULL, 214be916aa1267e2e6b1c148f51d11bcbbc79cb864cEric Laurent int notificationFrames = 0, 2159f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten int sessionId = 0, 216ad3af3305f024bcbbd55c894a4995e449498e1baRichard Fitzgerald transfer_type transferType = TRANSFER_DEFAULT, 217462fd2fa9eef642b0574aa7409de0bde3fec8d43Marco Nelissen const audio_offload_info_t *offloadInfo = NULL, 218462fd2fa9eef642b0574aa7409de0bde3fec8d43Marco Nelissen int uid = -1); 21989fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project 22089fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project /* Terminates the AudioTrack and unregisters it from AudioFlinger. 221362c4e697d8e9c034e964ac7b40227e054491547Glenn Kasten * Also destroys all resources associated with the AudioTrack. 22289fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project */ 2232799d743ee2ae5a25fe869a7f9c052acc029559fGlenn Kastenprotected: 2242799d743ee2ae5a25fe869a7f9c052acc029559fGlenn Kasten virtual ~AudioTrack(); 2252799d743ee2ae5a25fe869a7f9c052acc029559fGlenn Kastenpublic: 22689fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project 2279f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten /* Initialize an AudioTrack that was created using the AudioTrack() constructor. 2289f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten * Don't call set() more than once, or after the AudioTrack() constructors that take parameters. 22989fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project * Returned status (from utils/Errors.h) can be: 230362c4e697d8e9c034e964ac7b40227e054491547Glenn Kasten * - NO_ERROR: successful initialization 231362c4e697d8e9c034e964ac7b40227e054491547Glenn Kasten * - INVALID_OPERATION: AudioTrack is already initialized 23228b76b334f92a15a2be3cc9e2f7d229a3275d1acGlenn Kasten * - BAD_VALUE: invalid parameter (channelMask, format, sampleRate...) 23389fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project * - NO_INIT: audio server or audio hardware not initialized 23453cec22821072719ee02c856e9ac2dda2496c570Glenn Kasten * If status is not equal to NO_ERROR, don't call any other APIs on this AudioTrack. 235083d1c1492d496960d5b28f4664ff02101736677Glenn Kasten * If sharedBuffer is non-0, the frameCount parameter is ignored and 236083d1c1492d496960d5b28f4664ff02101736677Glenn Kasten * replaced by the shared buffer's total allocated size in frame units. 2379f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten * 2389f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten * Parameters not listed in the AudioTrack constructors above: 2399f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten * 2409f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten * threadCanCallJava: Whether callbacks are made from an attached thread and thus can call JNI. 241ad2f6dbe14e601ae69f3697bc17106f9fd7d59d6Glenn Kasten */ 242743732236ab84e94168378cdb293964861b1ed00Glenn Kasten status_t set(audio_stream_type_t streamType, 243743732236ab84e94168378cdb293964861b1ed00Glenn Kasten uint32_t sampleRate, 244743732236ab84e94168378cdb293964861b1ed00Glenn Kasten audio_format_t format, 245743732236ab84e94168378cdb293964861b1ed00Glenn Kasten audio_channel_mask_t channelMask, 24689fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project int frameCount = 0, 2470ca3cf94c0dfc173ad7886ae162c4b67067539f6Eric Laurent audio_output_flags_t flags = AUDIO_OUTPUT_FLAG_NONE, 248a0d68338a88c2ddb4502f95017b546d603ef1ec7Glenn Kasten callback_t cbf = NULL, 249a0d68338a88c2ddb4502f95017b546d603ef1ec7Glenn Kasten void* user = NULL, 25089fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project int notificationFrames = 0, 25189fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project const sp<IMemory>& sharedBuffer = 0, 252be916aa1267e2e6b1c148f51d11bcbbc79cb864cEric Laurent bool threadCanCallJava = false, 2539f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten int sessionId = 0, 254ad3af3305f024bcbbd55c894a4995e449498e1baRichard Fitzgerald transfer_type transferType = TRANSFER_DEFAULT, 255462fd2fa9eef642b0574aa7409de0bde3fec8d43Marco Nelissen const audio_offload_info_t *offloadInfo = NULL, 256462fd2fa9eef642b0574aa7409de0bde3fec8d43Marco Nelissen int uid = -1); 25789fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project 25853cec22821072719ee02c856e9ac2dda2496c570Glenn Kasten /* Result of constructing the AudioTrack. This must be checked for successful initialization 259362c4e697d8e9c034e964ac7b40227e054491547Glenn Kasten * before using any AudioTrack API (except for set()), because using 26089fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project * an uninitialized AudioTrack produces undefined results. 26189fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project * See set() method above for possible return codes. 26289fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project */ 26301437b7cdaecf53acb46b50ff8b5d86b9d36eb20Glenn Kasten status_t initCheck() const { return mStatus; } 26489fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project 265362c4e697d8e9c034e964ac7b40227e054491547Glenn Kasten /* Returns this track's estimated latency in milliseconds. 26689fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project * This includes the latency due to AudioTrack buffer size, AudioMixer (if any) 26789fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project * and audio hardware driver. 26889fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project */ 269c9b2e20f7c9a71e07ef398152709c76079decbcdGlenn Kasten uint32_t latency() const { return mLatency; } 27089fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project 27199e53b86eebb605b70dd7591b89bf61a9414ed0eGlenn Kasten /* getters, see constructors and set() */ 27289fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project 27301437b7cdaecf53acb46b50ff8b5d86b9d36eb20Glenn Kasten audio_stream_type_t streamType() const { return mStreamType; } 27401437b7cdaecf53acb46b50ff8b5d86b9d36eb20Glenn Kasten audio_format_t format() const { return mFormat; } 275b9980659501d0428d65d8292f3c32da69d37fbd2Glenn Kasten 2769f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten /* Return frame size in bytes, which for linear PCM is 2779f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten * channelCount * (bit depth per channel / 8). 278b9980659501d0428d65d8292f3c32da69d37fbd2Glenn Kasten * channelCount is determined from channelMask, and bit depth comes from format. 279083d1c1492d496960d5b28f4664ff02101736677Glenn Kasten * For non-linear formats, the frame size is typically 1 byte. 280b9980659501d0428d65d8292f3c32da69d37fbd2Glenn Kasten */ 2819f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten size_t frameSize() const { return mFrameSize; } 282b9980659501d0428d65d8292f3c32da69d37fbd2Glenn Kasten 2839f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten uint32_t channelCount() const { return mChannelCount; } 28401437b7cdaecf53acb46b50ff8b5d86b9d36eb20Glenn Kasten uint32_t frameCount() const { return mFrameCount; } 28501437b7cdaecf53acb46b50ff8b5d86b9d36eb20Glenn Kasten 286083d1c1492d496960d5b28f4664ff02101736677Glenn Kasten /* Return the static buffer specified in constructor or set(), or 0 for streaming mode */ 28701437b7cdaecf53acb46b50ff8b5d86b9d36eb20Glenn Kasten sp<IMemory> sharedBuffer() const { return mSharedBuffer; } 28889fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project 28989fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project /* After it's created the track is not active. Call start() to 29089fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project * make it active. If set, the callback will start being called. 291083d1c1492d496960d5b28f4664ff02101736677Glenn Kasten * If the track was previously paused, volume is ramped up over the first mix buffer. 29289fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project */ 293b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald status_t start(); 29489fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project 295083d1c1492d496960d5b28f4664ff02101736677Glenn Kasten /* Stop a track. 296083d1c1492d496960d5b28f4664ff02101736677Glenn Kasten * In static buffer mode, the track is stopped immediately. 2979f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten * In streaming mode, the callback will cease being called. Note that obtainBuffer() still 2989f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten * works and will fill up buffers until the pool is exhausted, and then will return WOULD_BLOCK. 2999f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten * In streaming mode the stop does not occur immediately: any data remaining in the buffer 300083d1c1492d496960d5b28f4664ff02101736677Glenn Kasten * is first drained, mixed, and output, and only then is the track marked as stopped. 30189fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project */ 30289fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project void stop(); 30389fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project bool stopped() const; 30489fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project 3054bae3649d504d590a546717a8e49f96a30d9a745Glenn Kasten /* Flush a stopped or paused track. All previously buffered data is discarded immediately. 3064bae3649d504d590a546717a8e49f96a30d9a745Glenn Kasten * This has the effect of draining the buffers without mixing or output. 3074bae3649d504d590a546717a8e49f96a30d9a745Glenn Kasten * Flush is intended for streaming mode, for example before switching to non-contiguous content. 3084bae3649d504d590a546717a8e49f96a30d9a745Glenn Kasten * This function is a no-op if the track is not stopped or paused, or uses a static buffer. 30989fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project */ 31089fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project void flush(); 31189fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project 312083d1c1492d496960d5b28f4664ff02101736677Glenn Kasten /* Pause a track. After pause, the callback will cease being called and 3139f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten * obtainBuffer returns WOULD_BLOCK. Note that obtainBuffer() still works 31489fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project * and will fill up buffers until the pool is exhausted. 315083d1c1492d496960d5b28f4664ff02101736677Glenn Kasten * Volume is ramped down over the next mix buffer following the pause request, 316083d1c1492d496960d5b28f4664ff02101736677Glenn Kasten * and then the track is marked as paused. It can be resumed with ramp up by start(). 31789fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project */ 31889fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project void pause(); 31989fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project 320362c4e697d8e9c034e964ac7b40227e054491547Glenn Kasten /* Set volume for this track, mostly used for games' sound effects 321362c4e697d8e9c034e964ac7b40227e054491547Glenn Kasten * left and right volumes. Levels must be >= 0.0 and <= 1.0. 322b1c0993b215c5c3eebd1c6bafc22bba23d57a70bGlenn Kasten * This is the older API. New applications should use setVolume(float) when possible. 32389fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project */ 324be916aa1267e2e6b1c148f51d11bcbbc79cb864cEric Laurent status_t setVolume(float left, float right); 325b1c0993b215c5c3eebd1c6bafc22bba23d57a70bGlenn Kasten 326b1c0993b215c5c3eebd1c6bafc22bba23d57a70bGlenn Kasten /* Set volume for all channels. This is the preferred API for new applications, 327b1c0993b215c5c3eebd1c6bafc22bba23d57a70bGlenn Kasten * especially for multi-channel content. 328b1c0993b215c5c3eebd1c6bafc22bba23d57a70bGlenn Kasten */ 329b1c0993b215c5c3eebd1c6bafc22bba23d57a70bGlenn Kasten status_t setVolume(float volume); 33089fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project 331362c4e697d8e9c034e964ac7b40227e054491547Glenn Kasten /* Set the send level for this track. An auxiliary effect should be attached 332362c4e697d8e9c034e964ac7b40227e054491547Glenn Kasten * to the track with attachEffect(). Level must be >= 0.0 and <= 1.0. 333be916aa1267e2e6b1c148f51d11bcbbc79cb864cEric Laurent */ 3342beeb50b1bba9e92f6cacfeca37fe9fa9d36ead1Eric Laurent status_t setAuxEffectSendLevel(float level); 335a5224f319e2ba4b51ddb4287705ccf8d4b8ecc51Glenn Kasten void getAuxEffectSendLevel(float* level) const; 336be916aa1267e2e6b1c148f51d11bcbbc79cb864cEric Laurent 3379f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten /* Set source sample rate for this track in Hz, mostly used for games' sound effects 33889fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project */ 3393b16c766d1ae2cfd8487e8ffb2b23936fc0a8e17Glenn Kasten status_t setSampleRate(uint32_t sampleRate); 3403b16c766d1ae2cfd8487e8ffb2b23936fc0a8e17Glenn Kasten 3419f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten /* Return current source sample rate in Hz, or 0 if unknown */ 342a5224f319e2ba4b51ddb4287705ccf8d4b8ecc51Glenn Kasten uint32_t getSampleRate() const; 34389fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project 34489fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project /* Enables looping and sets the start and end points of looping. 345083d1c1492d496960d5b28f4664ff02101736677Glenn Kasten * Only supported for static buffer mode. 34689fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project * 34789fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project * Parameters: 34889fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project * 3499c6745f128648f6e0144b74ee593911a9fa10d51Glenn Kasten * loopStart: loop start in frames relative to start of buffer. 3509c6745f128648f6e0144b74ee593911a9fa10d51Glenn Kasten * loopEnd: loop end in frames relative to start of buffer. 351362c4e697d8e9c034e964ac7b40227e054491547Glenn Kasten * loopCount: number of loops to execute. Calling setLoop() with loopCount == 0 cancels any 3529c6745f128648f6e0144b74ee593911a9fa10d51Glenn Kasten * pending or active loop. loopCount == -1 means infinite looping. 35389fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project * 35489fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project * For proper operation the following condition must be respected: 3559c6745f128648f6e0144b74ee593911a9fa10d51Glenn Kasten * loopCount != 0 implies 0 <= loopStart < loopEnd <= frameCount(). 3569c6745f128648f6e0144b74ee593911a9fa10d51Glenn Kasten * 3579c6745f128648f6e0144b74ee593911a9fa10d51Glenn Kasten * If the loop period (loopEnd - loopStart) is too small for the implementation to support, 3589f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten * setLoop() will return BAD_VALUE. loopCount must be >= -1. 3599c6745f128648f6e0144b74ee593911a9fa10d51Glenn Kasten * 36089fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project */ 36189fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project status_t setLoop(uint32_t loopStart, uint32_t loopEnd, int loopCount); 36289fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project 363362c4e697d8e9c034e964ac7b40227e054491547Glenn Kasten /* Sets marker position. When playback reaches the number of frames specified, a callback with 364362c4e697d8e9c034e964ac7b40227e054491547Glenn Kasten * event type EVENT_MARKER is called. Calling setMarkerPosition with marker == 0 cancels marker 365083d1c1492d496960d5b28f4664ff02101736677Glenn Kasten * notification callback. To set a marker at a position which would compute as 0, 3669f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten * a workaround is to the set the marker at a nearby position such as ~0 or 1. 36785ab62c4b433df3f1a9826bed1c9bec07a86c750Glenn Kasten * If the AudioTrack has been opened with no callback function associated, the operation will 36885ab62c4b433df3f1a9826bed1c9bec07a86c750Glenn Kasten * fail. 36989fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project * 37089fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project * Parameters: 37189fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project * 372083d1c1492d496960d5b28f4664ff02101736677Glenn Kasten * marker: marker position expressed in wrapping (overflow) frame units, 373083d1c1492d496960d5b28f4664ff02101736677Glenn Kasten * like the return value of getPosition(). 37489fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project * 37589fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project * Returned status (from utils/Errors.h) can be: 37689fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project * - NO_ERROR: successful operation 37789fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project * - INVALID_OPERATION: the AudioTrack has no callback installed. 37889fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project */ 37989fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project status_t setMarkerPosition(uint32_t marker); 380a5224f319e2ba4b51ddb4287705ccf8d4b8ecc51Glenn Kasten status_t getMarkerPosition(uint32_t *marker) const; 38189fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project 382362c4e697d8e9c034e964ac7b40227e054491547Glenn Kasten /* Sets position update period. Every time the number of frames specified has been played, 383362c4e697d8e9c034e964ac7b40227e054491547Glenn Kasten * a callback with event type EVENT_NEW_POS is called. 384362c4e697d8e9c034e964ac7b40227e054491547Glenn Kasten * Calling setPositionUpdatePeriod with updatePeriod == 0 cancels new position notification 385362c4e697d8e9c034e964ac7b40227e054491547Glenn Kasten * callback. 38685ab62c4b433df3f1a9826bed1c9bec07a86c750Glenn Kasten * If the AudioTrack has been opened with no callback function associated, the operation will 38785ab62c4b433df3f1a9826bed1c9bec07a86c750Glenn Kasten * fail. 388083d1c1492d496960d5b28f4664ff02101736677Glenn Kasten * Extremely small values may be rounded up to a value the implementation can support. 38989fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project * 39089fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project * Parameters: 39189fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project * 39289fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project * updatePeriod: position update notification period expressed in frames. 39389fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project * 39489fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project * Returned status (from utils/Errors.h) can be: 39589fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project * - NO_ERROR: successful operation 39689fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project * - INVALID_OPERATION: the AudioTrack has no callback installed. 39789fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project */ 39889fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project status_t setPositionUpdatePeriod(uint32_t updatePeriod); 399a5224f319e2ba4b51ddb4287705ccf8d4b8ecc51Glenn Kasten status_t getPositionUpdatePeriod(uint32_t *updatePeriod) const; 40089fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project 4019c6745f128648f6e0144b74ee593911a9fa10d51Glenn Kasten /* Sets playback head position. 4029c6745f128648f6e0144b74ee593911a9fa10d51Glenn Kasten * Only supported for static buffer mode. 4039c6745f128648f6e0144b74ee593911a9fa10d51Glenn Kasten * 40489fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project * Parameters: 40589fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project * 4069c6745f128648f6e0144b74ee593911a9fa10d51Glenn Kasten * position: New playback head position in frames relative to start of buffer. 4079c6745f128648f6e0144b74ee593911a9fa10d51Glenn Kasten * 0 <= position <= frameCount(). Note that end of buffer is permitted, 4089c6745f128648f6e0144b74ee593911a9fa10d51Glenn Kasten * but will result in an immediate underrun if started. 40989fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project * 41089fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project * Returned status (from utils/Errors.h) can be: 41189fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project * - NO_ERROR: successful operation 412083d1c1492d496960d5b28f4664ff02101736677Glenn Kasten * - INVALID_OPERATION: the AudioTrack is not stopped or paused, or is streaming mode. 41385ab62c4b433df3f1a9826bed1c9bec07a86c750Glenn Kasten * - BAD_VALUE: The specified position is beyond the number of frames present in AudioTrack 41485ab62c4b433df3f1a9826bed1c9bec07a86c750Glenn Kasten * buffer 41589fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project */ 41689fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project status_t setPosition(uint32_t position); 417083d1c1492d496960d5b28f4664ff02101736677Glenn Kasten 418083d1c1492d496960d5b28f4664ff02101736677Glenn Kasten /* Return the total number of frames played since playback start. 419083d1c1492d496960d5b28f4664ff02101736677Glenn Kasten * The counter will wrap (overflow) periodically, e.g. every ~27 hours at 44.1 kHz. 420083d1c1492d496960d5b28f4664ff02101736677Glenn Kasten * It is reset to zero by flush(), reload(), and stop(). 4219f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten * 4229f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten * Parameters: 4239f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten * 4249f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten * position: Address where to return play head position. 4259f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten * 4269f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten * Returned status (from utils/Errors.h) can be: 4279f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten * - NO_ERROR: successful operation 4289f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten * - BAD_VALUE: position is NULL 429083d1c1492d496960d5b28f4664ff02101736677Glenn Kasten */ 4309f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten status_t getPosition(uint32_t *position) const; 43189fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project 4329c6745f128648f6e0144b74ee593911a9fa10d51Glenn Kasten /* For static buffer mode only, this returns the current playback position in frames 43302de89293b74ab1e9a77ce2367c5c499ab038968Glenn Kasten * relative to start of buffer. It is analogous to the position units used by 4349c6745f128648f6e0144b74ee593911a9fa10d51Glenn Kasten * setLoop() and setPosition(). After underrun, the position will be at end of buffer. 4359c6745f128648f6e0144b74ee593911a9fa10d51Glenn Kasten */ 4369c6745f128648f6e0144b74ee593911a9fa10d51Glenn Kasten status_t getBufferPosition(uint32_t *position); 4379c6745f128648f6e0144b74ee593911a9fa10d51Glenn Kasten 438362c4e697d8e9c034e964ac7b40227e054491547Glenn Kasten /* Forces AudioTrack buffer full condition. When playing a static buffer, this method avoids 43989fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project * rewriting the buffer before restarting playback after a stop. 44089fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project * This method must be called with the AudioTrack in paused or stopped state. 441083d1c1492d496960d5b28f4664ff02101736677Glenn Kasten * Not allowed in streaming mode. 44289fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project * 44389fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project * Returned status (from utils/Errors.h) can be: 44489fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project * - NO_ERROR: successful operation 445083d1c1492d496960d5b28f4664ff02101736677Glenn Kasten * - INVALID_OPERATION: the AudioTrack is not stopped or paused, or is streaming mode. 44689fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project */ 44789fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project status_t reload(); 44889fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project 449362c4e697d8e9c034e964ac7b40227e054491547Glenn Kasten /* Returns a handle on the audio output used by this AudioTrack. 450c2f1f07084818942352c6bbfb36af9b6b330eb4eEric Laurent * 451c2f1f07084818942352c6bbfb36af9b6b330eb4eEric Laurent * Parameters: 452c2f1f07084818942352c6bbfb36af9b6b330eb4eEric Laurent * none. 453c2f1f07084818942352c6bbfb36af9b6b330eb4eEric Laurent * 454c2f1f07084818942352c6bbfb36af9b6b330eb4eEric Laurent * Returned value: 455c2f1f07084818942352c6bbfb36af9b6b330eb4eEric Laurent * handle on audio hardware output 456c2f1f07084818942352c6bbfb36af9b6b330eb4eEric Laurent */ 457c2f1f07084818942352c6bbfb36af9b6b330eb4eEric Laurent audio_io_handle_t getOutput(); 458c2f1f07084818942352c6bbfb36af9b6b330eb4eEric Laurent 459362c4e697d8e9c034e964ac7b40227e054491547Glenn Kasten /* Returns the unique session ID associated with this track. 460be916aa1267e2e6b1c148f51d11bcbbc79cb864cEric Laurent * 461be916aa1267e2e6b1c148f51d11bcbbc79cb864cEric Laurent * Parameters: 462be916aa1267e2e6b1c148f51d11bcbbc79cb864cEric Laurent * none. 463be916aa1267e2e6b1c148f51d11bcbbc79cb864cEric Laurent * 464be916aa1267e2e6b1c148f51d11bcbbc79cb864cEric Laurent * Returned value: 465362c4e697d8e9c034e964ac7b40227e054491547Glenn Kasten * AudioTrack session ID. 466be916aa1267e2e6b1c148f51d11bcbbc79cb864cEric Laurent */ 46701437b7cdaecf53acb46b50ff8b5d86b9d36eb20Glenn Kasten int getSessionId() const { return mSessionId; } 468be916aa1267e2e6b1c148f51d11bcbbc79cb864cEric Laurent 469362c4e697d8e9c034e964ac7b40227e054491547Glenn Kasten /* Attach track auxiliary output to specified effect. Use effectId = 0 470be916aa1267e2e6b1c148f51d11bcbbc79cb864cEric Laurent * to detach track from effect. 471be916aa1267e2e6b1c148f51d11bcbbc79cb864cEric Laurent * 472be916aa1267e2e6b1c148f51d11bcbbc79cb864cEric Laurent * Parameters: 473be916aa1267e2e6b1c148f51d11bcbbc79cb864cEric Laurent * 474be916aa1267e2e6b1c148f51d11bcbbc79cb864cEric Laurent * effectId: effectId obtained from AudioEffect::id(). 475be916aa1267e2e6b1c148f51d11bcbbc79cb864cEric Laurent * 476be916aa1267e2e6b1c148f51d11bcbbc79cb864cEric Laurent * Returned status (from utils/Errors.h) can be: 477be916aa1267e2e6b1c148f51d11bcbbc79cb864cEric Laurent * - NO_ERROR: successful operation 478be916aa1267e2e6b1c148f51d11bcbbc79cb864cEric Laurent * - INVALID_OPERATION: the effect is not an auxiliary effect. 479be916aa1267e2e6b1c148f51d11bcbbc79cb864cEric Laurent * - BAD_VALUE: The specified effect ID is invalid 480be916aa1267e2e6b1c148f51d11bcbbc79cb864cEric Laurent */ 481be916aa1267e2e6b1c148f51d11bcbbc79cb864cEric Laurent status_t attachAuxEffect(int effectId); 482be916aa1267e2e6b1c148f51d11bcbbc79cb864cEric Laurent 4839f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten /* Obtains a buffer of up to "audioBuffer->frameCount" empty slots for frames. 4849f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten * After filling these slots with data, the caller should release them with releaseBuffer(). 4859f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten * If the track buffer is not full, obtainBuffer() returns as many contiguous 4869f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten * [empty slots for] frames as are available immediately. 4879f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten * If the track buffer is full and track is stopped, obtainBuffer() returns WOULD_BLOCK 4889f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten * regardless of the value of waitCount. 4899f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten * If the track buffer is full and track is not stopped, obtainBuffer() blocks with a 4909f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten * maximum timeout based on waitCount; see chart below. 491ad2f6dbe14e601ae69f3697bc17106f9fd7d59d6Glenn Kasten * Buffers will be returned until the pool 49289fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project * is exhausted, at which point obtainBuffer() will either block 4939f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten * or return WOULD_BLOCK depending on the value of the "waitCount" 49489fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project * parameter. 4959f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten * Each sample is 16-bit signed PCM. 49699e53b86eebb605b70dd7591b89bf61a9414ed0eGlenn Kasten * 497083d1c1492d496960d5b28f4664ff02101736677Glenn Kasten * obtainBuffer() and releaseBuffer() are deprecated for direct use by applications, 498083d1c1492d496960d5b28f4664ff02101736677Glenn Kasten * which should use write() or callback EVENT_MORE_DATA instead. 499083d1c1492d496960d5b28f4664ff02101736677Glenn Kasten * 50099e53b86eebb605b70dd7591b89bf61a9414ed0eGlenn Kasten * Interpretation of waitCount: 50199e53b86eebb605b70dd7591b89bf61a9414ed0eGlenn Kasten * +n limits wait time to n * WAIT_PERIOD_MS, 50299e53b86eebb605b70dd7591b89bf61a9414ed0eGlenn Kasten * -1 causes an (almost) infinite wait time, 50399e53b86eebb605b70dd7591b89bf61a9414ed0eGlenn Kasten * 0 non-blocking. 50405d499958e4030938ed77a924ebdd9899f36752eGlenn Kasten * 50505d499958e4030938ed77a924ebdd9899f36752eGlenn Kasten * Buffer fields 50605d499958e4030938ed77a924ebdd9899f36752eGlenn Kasten * On entry: 50705d499958e4030938ed77a924ebdd9899f36752eGlenn Kasten * frameCount number of frames requested 50805d499958e4030938ed77a924ebdd9899f36752eGlenn Kasten * After error return: 50905d499958e4030938ed77a924ebdd9899f36752eGlenn Kasten * frameCount 0 51005d499958e4030938ed77a924ebdd9899f36752eGlenn Kasten * size 0 51122eb4e239fbe9103568147d566d7482e480350b8Glenn Kasten * raw undefined 51205d499958e4030938ed77a924ebdd9899f36752eGlenn Kasten * After successful return: 51305d499958e4030938ed77a924ebdd9899f36752eGlenn Kasten * frameCount actual number of frames available, <= number requested 51405d499958e4030938ed77a924ebdd9899f36752eGlenn Kasten * size actual number of bytes available 51505d499958e4030938ed77a924ebdd9899f36752eGlenn Kasten * raw pointer to the buffer 51689fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project */ 51789fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project 5189f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten /* FIXME Deprecated public API for TRANSFER_OBTAIN mode */ 5199f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten status_t obtainBuffer(Buffer* audioBuffer, int32_t waitCount) 5209f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten __attribute__((__deprecated__)); 52189fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project 5229f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kastenprivate: 52302de89293b74ab1e9a77ce2367c5c499ab038968Glenn Kasten /* If nonContig is non-NULL, it is an output parameter that will be set to the number of 5249f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten * additional non-contiguous frames that are available immediately. 5259f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten * FIXME We could pass an array of Buffers instead of only one Buffer to obtainBuffer(), 5269f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten * in case the requested amount of frames is in two or more non-contiguous regions. 5279f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten * FIXME requested and elapsed are both relative times. Consider changing to absolute time. 5289f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten */ 5299f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten status_t obtainBuffer(Buffer* audioBuffer, const struct timespec *requested, 5309f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten struct timespec *elapsed = NULL, size_t *nonContig = NULL); 5319f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kastenpublic: 53299e53b86eebb605b70dd7591b89bf61a9414ed0eGlenn Kasten 533ad3af3305f024bcbbd55c894a4995e449498e1baRichard Fitzgerald//EL_FIXME to be reconciled with new obtainBuffer() return codes and control block proxy 534ad3af3305f024bcbbd55c894a4995e449498e1baRichard Fitzgerald// enum { 535ad3af3305f024bcbbd55c894a4995e449498e1baRichard Fitzgerald// NO_MORE_BUFFERS = 0x80000001, // same name in AudioFlinger.h, ok to be different value 536ad3af3305f024bcbbd55c894a4995e449498e1baRichard Fitzgerald// TEAR_DOWN = 0x80000002, 537ad3af3305f024bcbbd55c894a4995e449498e1baRichard Fitzgerald// STOPPED = 1, 538ad3af3305f024bcbbd55c894a4995e449498e1baRichard Fitzgerald// STREAM_END_WAIT, 539ad3af3305f024bcbbd55c894a4995e449498e1baRichard Fitzgerald// STREAM_END 540ad3af3305f024bcbbd55c894a4995e449498e1baRichard Fitzgerald// }; 541ad3af3305f024bcbbd55c894a4995e449498e1baRichard Fitzgerald 5429f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten /* Release a filled buffer of "audioBuffer->frameCount" frames for AudioFlinger to process. */ 5439f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // FIXME make private when obtainBuffer() for TRANSFER_OBTAIN is removed 54489fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project void releaseBuffer(Buffer* audioBuffer); 54589fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project 54689fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project /* As a convenience we provide a write() interface to the audio buffer. 5479f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten * Input parameter 'size' is in byte units. 54899e53b86eebb605b70dd7591b89bf61a9414ed0eGlenn Kasten * This is implemented on top of obtainBuffer/releaseBuffer. For best 54999e53b86eebb605b70dd7591b89bf61a9414ed0eGlenn Kasten * performance use callbacks. Returns actual number of bytes written >= 0, 55099e53b86eebb605b70dd7591b89bf61a9414ed0eGlenn Kasten * or one of the following negative status codes: 55102de89293b74ab1e9a77ce2367c5c499ab038968Glenn Kasten * INVALID_OPERATION AudioTrack is configured for static buffer or streaming mode 55299e53b86eebb605b70dd7591b89bf61a9414ed0eGlenn Kasten * BAD_VALUE size is invalid 5539f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten * WOULD_BLOCK when obtainBuffer() returns same, or 5549f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten * AudioTrack was stopped during the write 55599e53b86eebb605b70dd7591b89bf61a9414ed0eGlenn Kasten * or any other error code returned by IAudioTrack::start() or restoreTrack_l(). 55689fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project */ 55789fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project ssize_t write(const void* buffer, size_t size); 55889fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project 55989fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project /* 56089fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project * Dumps the state of an audio track. 56189fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project */ 5629f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten status_t dump(int fd, const Vector<String16>& args) const; 5639f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten 5649f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten /* 5659f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten * Return the total number of frames which AudioFlinger desired but were unavailable, 5669f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten * and thus which resulted in an underrun. Reset to zero by stop(). 5679f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten */ 5689f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten uint32_t getUnderrunFrames() const; 56989fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project 570ad3af3305f024bcbbd55c894a4995e449498e1baRichard Fitzgerald /* Get the flags */ 571ad3af3305f024bcbbd55c894a4995e449498e1baRichard Fitzgerald audio_output_flags_t getFlags() const { return mFlags; } 572ad3af3305f024bcbbd55c894a4995e449498e1baRichard Fitzgerald 573ad3af3305f024bcbbd55c894a4995e449498e1baRichard Fitzgerald /* Set parameters - only possible when using direct output */ 574ad3af3305f024bcbbd55c894a4995e449498e1baRichard Fitzgerald status_t setParameters(const String8& keyValuePairs); 575ad3af3305f024bcbbd55c894a4995e449498e1baRichard Fitzgerald 576ad3af3305f024bcbbd55c894a4995e449498e1baRichard Fitzgerald /* Get parameters */ 577ad3af3305f024bcbbd55c894a4995e449498e1baRichard Fitzgerald String8 getParameters(const String8& keys); 578ad3af3305f024bcbbd55c894a4995e449498e1baRichard Fitzgerald 579ce70374bf105f8a6160bf5dd70affea012b2a464Glenn Kasten /* Poll for a timestamp on demand. 580ce70374bf105f8a6160bf5dd70affea012b2a464Glenn Kasten * Use if EVENT_NEW_TIMESTAMP is not delivered often enough for your needs, 581ce70374bf105f8a6160bf5dd70affea012b2a464Glenn Kasten * or if you need to get the most recent timestamp outside of the event callback handler. 582ce70374bf105f8a6160bf5dd70affea012b2a464Glenn Kasten * Caution: calling this method too often may be inefficient; 583ce70374bf105f8a6160bf5dd70affea012b2a464Glenn Kasten * if you need a high resolution mapping between frame position and presentation time, 584ce70374bf105f8a6160bf5dd70affea012b2a464Glenn Kasten * consider implementing that at application level, based on the low resolution timestamps. 585ce70374bf105f8a6160bf5dd70affea012b2a464Glenn Kasten * Returns NO_ERROR if timestamp is valid. 586ce70374bf105f8a6160bf5dd70affea012b2a464Glenn Kasten */ 587ce70374bf105f8a6160bf5dd70affea012b2a464Glenn Kasten status_t getTimestamp(AudioTimestamp& timestamp); 588ce70374bf105f8a6160bf5dd70affea012b2a464Glenn Kasten 5894ff14bae91075eb274eb1c2975982358946e7e63John Grossmanprotected: 59089fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project /* copying audio tracks is not allowed */ 59189fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project AudioTrack(const AudioTrack& other); 59289fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project AudioTrack& operator = (const AudioTrack& other); 59389fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project 59489fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project /* a small internal class to handle the callback */ 59589fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project class AudioTrackThread : public Thread 59689fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project { 59789fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project public: 59889fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project AudioTrackThread(AudioTrack& receiver, bool bCanCallJava = false); 5993acbd053c842e76e1a40fc8a0bf62de87eebf00fGlenn Kasten 6003acbd053c842e76e1a40fc8a0bf62de87eebf00fGlenn Kasten // Do not call Thread::requestExitAndWait() without first calling requestExit(). 6013acbd053c842e76e1a40fc8a0bf62de87eebf00fGlenn Kasten // Thread::requestExitAndWait() is not virtual, and the implementation doesn't do enough. 6023acbd053c842e76e1a40fc8a0bf62de87eebf00fGlenn Kasten virtual void requestExit(); 6033acbd053c842e76e1a40fc8a0bf62de87eebf00fGlenn Kasten 6043acbd053c842e76e1a40fc8a0bf62de87eebf00fGlenn Kasten void pause(); // suspend thread from execution at next loop boundary 6053acbd053c842e76e1a40fc8a0bf62de87eebf00fGlenn Kasten void resume(); // allow thread to execute, if not requested to exit 6063acbd053c842e76e1a40fc8a0bf62de87eebf00fGlenn Kasten 60789fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project private: 6085a6cd224d07c05b496b6aca050ce5ecf96f125afGlenn Kasten void pauseInternal(nsecs_t ns = 0LL); 6095a6cd224d07c05b496b6aca050ce5ecf96f125afGlenn Kasten // like pause(), but only used internally within thread 6105a6cd224d07c05b496b6aca050ce5ecf96f125afGlenn Kasten 61189fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project friend class AudioTrack; 61289fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project virtual bool threadLoop(); 6139f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten AudioTrack& mReceiver; 6149f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten virtual ~AudioTrackThread(); 6153acbd053c842e76e1a40fc8a0bf62de87eebf00fGlenn Kasten Mutex mMyLock; // Thread::mLock is private 6163acbd053c842e76e1a40fc8a0bf62de87eebf00fGlenn Kasten Condition mMyCond; // Thread::mThreadExitedCondition is private 6175a6cd224d07c05b496b6aca050ce5ecf96f125afGlenn Kasten bool mPaused; // whether thread is requested to pause at next loop entry 6185a6cd224d07c05b496b6aca050ce5ecf96f125afGlenn Kasten bool mPausedInt; // whether thread internally requests pause 6195a6cd224d07c05b496b6aca050ce5ecf96f125afGlenn Kasten nsecs_t mPausedNs; // if mPausedInt then associated timeout, otherwise ignored 620598de6c701e989385eeffa7c5dfd61f0459a2631Glenn Kasten bool mIgnoreNextPausedInt; // whether to ignore next mPausedInt request 62189fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project }; 62289fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project 62399e53b86eebb605b70dd7591b89bf61a9414ed0eGlenn Kasten // body of AudioTrackThread::threadLoop() 6249f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // returns the maximum amount of time before we would like to run again, where: 6259f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // 0 immediately 6269f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // > 0 no later than this many nanoseconds from now 6279f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // NS_WHENEVER still active but no particular deadline 6289f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // NS_INACTIVE inactive so don't run again until re-started 6299f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // NS_NEVER never again 6309f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten static const nsecs_t NS_WHENEVER = -1, NS_INACTIVE = -2, NS_NEVER = -3; 6317c7be1e05634d96d08210efb4bdeb012ffba440dGlenn Kasten nsecs_t processAudioBuffer(); 632ad3af3305f024bcbbd55c894a4995e449498e1baRichard Fitzgerald status_t processStreamEnd(int32_t waitCount); 633ad3af3305f024bcbbd55c894a4995e449498e1baRichard Fitzgerald 634ea7939a079b3600cab955760839b021326f8cfc3Glenn Kasten 635d5ed6e88a9bea1879e41d7defaf1edea7c09f554Glenn Kasten // caller must hold lock on mLock for all _l methods 636ad3af3305f024bcbbd55c894a4995e449498e1baRichard Fitzgerald 637fff6d715a8db0daf08a50634f242c40268de3d49Glenn Kasten status_t createTrack_l(audio_stream_type_t streamType, 63834f1d8ecd23169a5f299937e3aaf1bd7937578a0Eric Laurent uint32_t sampleRate, 639e1c3962e268ffc12bfd1bd9ea84da1f135f36960Glenn Kasten audio_format_t format, 640e33054eb968cbf8ccaee1b0ff0301403902deed6Glenn Kasten size_t frameCount, 6410ca3cf94c0dfc173ad7886ae162c4b67067539f6Eric Laurent audio_output_flags_t flags, 64234f1d8ecd23169a5f299937e3aaf1bd7937578a0Eric Laurent const sp<IMemory>& sharedBuffer, 6439f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten audio_io_handle_t output, 6449f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten size_t epoch); 6454bae3649d504d590a546717a8e49f96a30d9a745Glenn Kasten 6469f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // can only be called when mState != STATE_ACTIVE 6471703cdfee717b1b312bf8979816a9e2f16a82e5dEric Laurent void flush_l(); 6484bae3649d504d590a546717a8e49f96a30d9a745Glenn Kasten 6499f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten void setLoop_l(uint32_t loopStart, uint32_t loopEnd, int loopCount); 6501703cdfee717b1b312bf8979816a9e2f16a82e5dEric Laurent audio_io_handle_t getOutput_l(); 65189fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project 6529f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // FIXME enum is faster than strcmp() for parameter 'from' 6539f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten status_t restoreTrack_l(const char *from); 6549f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten 655b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald bool isOffloaded() const 656b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald { return (mFlags & AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD) != 0; } 657b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald 65853cec22821072719ee02c856e9ac2dda2496c570Glenn Kasten // Next 3 fields may be changed if IAudioTrack is re-created, but always != 0 65989fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project sp<IAudioTrack> mAudioTrack; 66089fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project sp<IMemory> mCblkMemory; 6619f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten audio_track_cblk_t* mCblk; // re-load after mLock.unlock() 66289fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project 6639f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten sp<AudioTrackThread> mAudioTrackThread; 66489fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project float mVolume[2]; 665be916aa1267e2e6b1c148f51d11bcbbc79cb864cEric Laurent float mSendLevel; 6666f59db12a64f4496866952a251122ccb77a36c6bEric Laurent mutable uint32_t mSampleRate; // mutable because getSampleRate() can update it. 667396fabdb6efcdac5aea3d9f559d1beedf6a4cedcGlenn Kasten size_t mFrameCount; // corresponds to current IAudioTrack, value is 668396fabdb6efcdac5aea3d9f559d1beedf6a4cedcGlenn Kasten // reported back by AudioFlinger to the client 669396fabdb6efcdac5aea3d9f559d1beedf6a4cedcGlenn Kasten size_t mReqFrameCount; // frame count to request the first or next time 670396fabdb6efcdac5aea3d9f559d1beedf6a4cedcGlenn Kasten // a new IAudioTrack is needed, non-decreasing 67189fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project 6729f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // constant after constructor or set() 67360a839204713e0f8258d082af83262b1eb33a6c3Glenn Kasten audio_format_t mFormat; // as requested by client, not forced to 16-bit 674fff6d715a8db0daf08a50634f242c40268de3d49Glenn Kasten audio_stream_type_t mStreamType; 675e4756fe3a387615acb63c6a05788c8db9b5786cbGlenn Kasten uint32_t mChannelCount; 67628b76b334f92a15a2be3cc9e2f7d229a3275d1acGlenn Kasten audio_channel_mask_t mChannelMask; 6779f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten transfer_type mTransfer; 67883a0382dc17364567667a4e6135db43f5bd92efcGlenn Kasten 6799f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // mFrameSize is equal to mFrameSizeAF for non-PCM or 16-bit PCM data. For 8-bit PCM data, it's 6809f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // twice as large as mFrameSize because data is expanded to 16-bit before it's stored in buffer. 68183a0382dc17364567667a4e6135db43f5bd92efcGlenn Kasten size_t mFrameSize; // app-level frame size 68283a0382dc17364567667a4e6135db43f5bd92efcGlenn Kasten size_t mFrameSizeAF; // AudioFlinger frame size 68383a0382dc17364567667a4e6135db43f5bd92efcGlenn Kasten 68489fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project status_t mStatus; 68589fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project 6869f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // can change dynamically when IAudioTrack invalidated 6879f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten uint32_t mLatency; // in ms 6889f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten 6899f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // Indicates the current track state. Protected by mLock. 6909f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten enum State { 6919f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten STATE_ACTIVE, 6929f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten STATE_STOPPED, 6939f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten STATE_PAUSED, 694b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald STATE_PAUSED_STOPPING, 6959f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten STATE_FLUSHED, 696b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald STATE_STOPPING, 6979f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten } mState; 69889fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project 6996ca126d5c83386941c5cb9600099e5510e4430d6Glenn Kasten // for client callback handler 70099e53b86eebb605b70dd7591b89bf61a9414ed0eGlenn Kasten callback_t mCbf; // callback handler for events, or NULL 7016ca126d5c83386941c5cb9600099e5510e4430d6Glenn Kasten void* mUserData; 702ad2f6dbe14e601ae69f3697bc17106f9fd7d59d6Glenn Kasten 703ad2f6dbe14e601ae69f3697bc17106f9fd7d59d6Glenn Kasten // for notification APIs 70485ab62c4b433df3f1a9826bed1c9bec07a86c750Glenn Kasten uint32_t mNotificationFramesReq; // requested number of frames between each 7059f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // notification callback, 7069f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // at initial source sample rate 70785ab62c4b433df3f1a9826bed1c9bec07a86c750Glenn Kasten uint32_t mNotificationFramesAct; // actual number of frames between each 7089f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // notification callback, 7099f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // at initial source sample rate 7102fc14730e4697a6f456b4631549c9981f6b0b115Glenn Kasten bool mRefreshRemaining; // processAudioBuffer() should refresh 7112fc14730e4697a6f456b4631549c9981f6b0b115Glenn Kasten // mRemainingFrames and mRetryOnPartialBuffer 7129f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten 7139f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // These are private to processAudioBuffer(), and are not protected by a lock 7149f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten uint32_t mRemainingFrames; // number of frames to request in obtainBuffer() 7159f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten bool mRetryOnPartialBuffer; // sleep and retry after partial obtainBuffer() 716b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald uint32_t mObservedSequence; // last observed value of mSequence 7179f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten 71889fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project sp<IMemory> mSharedBuffer; 7199f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten uint32_t mLoopPeriod; // in frames, zero means looping is disabled 720083d1c1492d496960d5b28f4664ff02101736677Glenn Kasten uint32_t mMarkerPosition; // in wrapping (overflow) frame units 7212c22aeb65e801f663a754d043062f85e49f77739Jean-Michel Trivi bool mMarkerReached; 722ad2f6dbe14e601ae69f3697bc17106f9fd7d59d6Glenn Kasten uint32_t mNewPosition; // in frames 7239f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten uint32_t mUpdatePeriod; // in frames, zero means no EVENT_NEW_POS 724ad2f6dbe14e601ae69f3697bc17106f9fd7d59d6Glenn Kasten 7250ca3cf94c0dfc173ad7886ae162c4b67067539f6Eric Laurent audio_output_flags_t mFlags; 726be916aa1267e2e6b1c148f51d11bcbbc79cb864cEric Laurent int mSessionId; 7272beeb50b1bba9e92f6cacfeca37fe9fa9d36ead1Eric Laurent int mAuxEffectId; 728d5ed6e88a9bea1879e41d7defaf1edea7c09f554Glenn Kasten 7299a2aaf927e56a4b4acab23ef16b3f133a9f48a63Glenn Kasten mutable Mutex mLock; 730d5ed6e88a9bea1879e41d7defaf1edea7c09f554Glenn Kasten 7314ff14bae91075eb274eb1c2975982358946e7e63John Grossman bool mIsTimed; 732879135196fd1c97deefc538c888037c56c2879a7Glenn Kasten int mPreviousPriority; // before start() 733a636433cbd09c0708b85f337ef45c0cdef3bcb4dGlenn Kasten SchedPolicy mPreviousSchedulingGroup; 734a07f17ca46db04c9d5d9e7d6b2878db59ca2b9eaGlenn Kasten bool mAwaitBoost; // thread should wait for priority boost before running 7359f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten 7369f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // The proxy should only be referenced while a lock is held because the proxy isn't 7379f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // multi-thread safe, especially the SingleStateQueue part of the proxy. 7389f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // An exception is that a blocking ClientProxy::obtainBuffer() may be called without a lock, 7399f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // provided that the caller also holds an extra reference to the proxy and shared memory to keep 7409f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten // them around in case they are replaced during the obtainBuffer(). 7419f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten sp<StaticAudioTrackClientProxy> mStaticProxy; // for type safety only 7429f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten sp<AudioTrackClientProxy> mProxy; // primary owner of the memory 7439f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten 7449f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten bool mInUnderrun; // whether track is currently in underrun state 745d054c32443a493513ab63529b0c8b1aca290278cGlenn Kasten String8 mName; // server's name for this IAudioTrack 7469f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten 7479f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kastenprivate: 7489f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten class DeathNotifier : public IBinder::DeathRecipient { 7499f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten public: 7509f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten DeathNotifier(AudioTrack* audioTrack) : mAudioTrack(audioTrack) { } 7519f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten protected: 7529f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten virtual void binderDied(const wp<IBinder>& who); 7539f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten private: 7549f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten const wp<AudioTrack> mAudioTrack; 7559f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten }; 7569f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten 7579f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten sp<DeathNotifier> mDeathNotifier; 7589f80dd223d83d9bb9077fb6baee056cee4eaf7e5Glenn Kasten uint32_t mSequence; // incremented for each new IAudioTrack attempt 759b1a270d1e926fb9a01b4265a7675ed0c2c8f4868Richard Fitzgerald audio_io_handle_t mOutput; // cached output io handle 760462fd2fa9eef642b0574aa7409de0bde3fec8d43Marco Nelissen int mClientUid; 76189fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project}; 76289fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project 7634ff14bae91075eb274eb1c2975982358946e7e63John Grossmanclass TimedAudioTrack : public AudioTrack 7644ff14bae91075eb274eb1c2975982358946e7e63John Grossman{ 7654ff14bae91075eb274eb1c2975982358946e7e63John Grossmanpublic: 7664ff14bae91075eb274eb1c2975982358946e7e63John Grossman TimedAudioTrack(); 7674ff14bae91075eb274eb1c2975982358946e7e63John Grossman 7684ff14bae91075eb274eb1c2975982358946e7e63John Grossman /* allocate a shared memory buffer that can be passed to queueTimedBuffer */ 7694ff14bae91075eb274eb1c2975982358946e7e63John Grossman status_t allocateTimedBuffer(size_t size, sp<IMemory>* buffer); 7704ff14bae91075eb274eb1c2975982358946e7e63John Grossman 7714ff14bae91075eb274eb1c2975982358946e7e63John Grossman /* queue a buffer obtained via allocateTimedBuffer for playback at the 772c3ae93f21280859086ae371428ffd32f39e76d50Glenn Kasten given timestamp. PTS units are microseconds on the media time timeline. 7734ff14bae91075eb274eb1c2975982358946e7e63John Grossman The media time transform (set with setMediaTimeTransform) set by the 7744ff14bae91075eb274eb1c2975982358946e7e63John Grossman audio producer will handle converting from media time to local time 7754ff14bae91075eb274eb1c2975982358946e7e63John Grossman (perhaps going through the common time timeline in the case of 7764ff14bae91075eb274eb1c2975982358946e7e63John Grossman synchronized multiroom audio case) */ 7774ff14bae91075eb274eb1c2975982358946e7e63John Grossman status_t queueTimedBuffer(const sp<IMemory>& buffer, int64_t pts); 7784ff14bae91075eb274eb1c2975982358946e7e63John Grossman 7794ff14bae91075eb274eb1c2975982358946e7e63John Grossman /* define a transform between media time and either common time or 7804ff14bae91075eb274eb1c2975982358946e7e63John Grossman local time */ 7814ff14bae91075eb274eb1c2975982358946e7e63John Grossman enum TargetTimeline {LOCAL_TIME, COMMON_TIME}; 7824ff14bae91075eb274eb1c2975982358946e7e63John Grossman status_t setMediaTimeTransform(const LinearTransform& xform, 7834ff14bae91075eb274eb1c2975982358946e7e63John Grossman TargetTimeline target); 7844ff14bae91075eb274eb1c2975982358946e7e63John Grossman}; 78589fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project 78689fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project}; // namespace android 78789fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project 78889fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project#endif // ANDROID_AUDIOTRACK_H 789