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Merge "BluetoothAudio: Refine the FMQ size for A2DP software encoding" into sc-dev

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TreeHugger Robot
2021-08-02 02:14:54 +00:00
committed by Android (Google) Code Review
parent 6ac46d6bf2 53ba71df99
commit b56f08714e
2 changed files with 12 additions and 4 deletions
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8
bluetooth/audio/2.0/default/A2dpSoftwareAudioProvider.cpp
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@@ -32,10 +32,14 @@ namespace implementation {
using ::android::bluetooth::audio::BluetoothAudioSessionReport;
using ::android::hardware::Void;
// Here the buffer size is based on SBC
static constexpr uint32_t kPcmFrameSize = 4; // 16 bits per sample / stereo
static constexpr uint32_t kPcmFrameCount = 128;
// SBC is 128, and here choose the LCM of 16, 24, and 32
static constexpr uint32_t kPcmFrameCount = 96;
static constexpr uint32_t kRtpFrameSize = kPcmFrameSize * kPcmFrameCount;
static constexpr uint32_t kRtpFrameCount = 7; // max counts by 1 tick (20ms)
// The max counts by 1 tick (20ms) for SBC is about 7. Since using 96 for the
// PCM counts, here we just choose a greater number
static constexpr uint32_t kRtpFrameCount = 10;
static constexpr uint32_t kBufferSize = kRtpFrameSize * kRtpFrameCount;
static constexpr uint32_t kBufferCount = 2; // double buffer
static constexpr uint32_t kDataMqSize = kBufferSize * kBufferCount;

8
bluetooth/audio/2.1/default/A2dpSoftwareAudioProvider.cpp
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@@ -34,10 +34,14 @@ using ::android::bluetooth::audio::BluetoothAudioSessionReport_2_1;
using ::android::hardware::Void;
using ::android::hardware::bluetooth::audio::V2_0::AudioConfiguration;
// Here the buffer size is based on SBC
static constexpr uint32_t kPcmFrameSize = 4; // 16 bits per sample / stereo
static constexpr uint32_t kPcmFrameCount = 128;
// SBC is 128, and here we choose the LCM of 16, 24, and 32
static constexpr uint32_t kPcmFrameCount = 96;
static constexpr uint32_t kRtpFrameSize = kPcmFrameSize * kPcmFrameCount;
static constexpr uint32_t kRtpFrameCount = 7; // max counts by 1 tick (20ms)
// The max counts by 1 tick (20ms) for SBC is about 7. Since using 96 for the
// PCM counts, here we just choose a greater number
static constexpr uint32_t kRtpFrameCount = 10;
static constexpr uint32_t kBufferSize = kRtpFrameSize * kRtpFrameCount;
static constexpr uint32_t kBufferCount = 2; // double buffer
static constexpr uint32_t kDataMqSize = kBufferSize * kBufferCount;