From b33c227cf4aa1bb0074c5435676c9399cef70832 Mon Sep 17 00:00:00 2001
From: cqm <mtdxc@126.com>
Date: Wed, 1 Jun 2022 11:35:52 +0800
Subject: [PATCH] =?UTF-8?q?AacTracker=20=E5=A2=9E=E5=8A=A0=E6=9E=84?=
 =?UTF-8?q?=E9=80=A0=E5=87=BD=E6=95=B0?=
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---
 src/Extension/AAC.cpp | 18 +++++++++++++++++-
 src/Extension/AAC.h   |  1 +
 src/Extension/G711.h  |  2 +-
 3 files changed, 19 insertions(+), 2 deletions(-)

diff --git a/src/Extension/AAC.cpp b/src/Extension/AAC.cpp
index 1047a8b3..4bf7733a 100644
--- a/src/Extension/AAC.cpp
+++ b/src/Extension/AAC.cpp
@@ -18,8 +18,8 @@ using namespace toolkit;
 
 namespace mediakit{
 
-#ifndef ENABLE_MP4
 unsigned const samplingFrequencyTable[16] = { 96000, 88200, 64000, 48000, 44100, 32000, 24000, 22050, 16000, 12000, 11025, 8000, 7350, 0, 0, 0 };
+#ifndef ENABLE_MP4
 
 class AdtsHeader{
 public:
@@ -246,6 +246,22 @@ AACTrack::AACTrack(const string &aac_cfg) {
     onReady();
 }
 
+AACTrack::AACTrack(int samplerate, int channel, int profile) : _channel(channel), _sampleRate(samplerate) {
+    uint8_t audioSpecificConfig[2] = { 0 };
+    uint8_t audioObjectType = profile+1;
+    int samplingFrequencyIndex = 0;
+    for (size_t i = 0; i < sizeof(samplingFrequencyTable) / sizeof(samplingFrequencyTable[0]); i++) {
+        if (samplingFrequencyTable[i] == (unsigned)samplerate) {
+            samplingFrequencyIndex = i;
+            break;
+        }
+    }
+    _cfg.resize(2);
+    _cfg[0] = (audioObjectType << 3) | (samplingFrequencyIndex >> 1);
+    _cfg[1] = (samplingFrequencyIndex << 7) | (channel << 3);
+    // onReady();
+}
+
 const string &AACTrack::getConfig() const {
     return _cfg;
 }
diff --git a/src/Extension/AAC.h b/src/Extension/AAC.h
index b95fc6f2..bba5ea00 100644
--- a/src/Extension/AAC.h
+++ b/src/Extension/AAC.h
@@ -40,6 +40,7 @@ public:
      * @param aac_cfg aac配置信息
      */
     AACTrack(const std::string &aac_cfg);
+    AACTrack(int samplerate, int channel, int profile=1);
 
     /**
      * 获取aac 配置信息
diff --git a/src/Extension/G711.h b/src/Extension/G711.h
index 550acbc4..e2e01746 100644
--- a/src/Extension/G711.h
+++ b/src/Extension/G711.h
@@ -22,7 +22,7 @@ namespace mediakit{
 class G711Track : public AudioTrackImp{
 public:
     using Ptr = std::shared_ptr<G711Track>;
-    G711Track(CodecId codecId, int sample_rate, int channels, int sample_bit) : AudioTrackImp(codecId, 8000, 1, 16) {}
+    G711Track(CodecId codecId, int sample_rate = 8000, int channels = 1, int sample_bit = 16) : AudioTrackImp(codecId, sample_rate, channels, sample_bit) {}
 
 private:
     Sdp::Ptr getSdp() override;