v1

2024-07-12 15:19:46 +08:00
commit 7ca1af130d
895 changed files with 282694 additions and 0 deletions
@@ -0,0 +1,72 @@
+//#include "msbc_encoder_port.h"
+#include "sbc_encoder.h"
+#include "xc60xx.h"
+
+#define mSBC_SYNCWORD 0xad
+#define SBC_MAX_CHANNELS 2
+
+struct msbc_encoder_state {
+    SBC_ENC_PARAMS *context;
+    int num_data_bytes;
+    uint8_t sbc_packet[512];
+};
+
+
+static struct msbc_encoder_state encoder_state = {0};
+static uint8_t msbc_encode_inited = 0;
+
+int msbc_encoder_init(void)
+{
+    static SBC_ENC_PARAMS msbc_context = {
+        .s16NumOfBlocks = 15,
+        .s16NumOfSubBands = 8,
+        .s16AllocationMethod = SBC_LOUDNESS,
+        .s16BitPool = 26,
+        .s16ChannelMode = SBC_MONO,
+        .s16NumOfChannels = 1,
+        .mSBCEnabled = 1,
+        .s16SamplingFreq = SBC_sf16000,
+    };
+//    int status = 0;
+
+    encoder_state.context = &msbc_context;
+    encoder_state.context->pu8Packet = encoder_state.sbc_packet;
+
+    SBC_Encoder_Init(encoder_state.context);
+    msbc_encode_inited = 1;
+    return 0;
+
+}
+
+int msbc_encoder_num_audio_frames(void)
+{
+    SBC_ENC_PARAMS * context = encoder_state.context;
+    return context->s16NumOfSubBands * context->s16NumOfBlocks;
+}
+
+uint8_t * msbc_encoder_sbc_buffer(void)
+{
+    SBC_ENC_PARAMS * context = encoder_state.context;
+    return context->pu8Packet;
+}
+
+uint16_t msbc_encoder_sbc_buffer_length(void)
+{
+    SBC_ENC_PARAMS * context = encoder_state.context;
+    return context->u16PacketLength;
+}
+
+void /*__attribute__((section("ram_em")))*/ msbc_encoder_process_data(int16_t * input_buffer)
+{
+    if (!msbc_encode_inited) {
+       printf("SBC encoder: sbc state is NULL, call btstack_sbc_encoder_init to initialize it\r\n");
+    }
+    SBC_ENC_PARAMS * context = encoder_state.context;
+    context->ps16PcmBuffer = input_buffer;
+    if (context->mSBCEnabled) {
+       context->pu8Packet[0] = 0xad;
+    }
+    SBC_Encoder(context);
+}
+
+