moyuhai
73 lines
1.8 KiB
C
73 lines
1.8 KiB
C
//#include "msbc_encoder_port.h"
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#include "sbc_encoder.h"
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#include "xc60xx.h"
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#define mSBC_SYNCWORD 0xad
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#define SBC_MAX_CHANNELS 2
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struct msbc_encoder_state {
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SBC_ENC_PARAMS *context;
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int num_data_bytes;
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uint8_t sbc_packet[512];
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};
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__attribute__((section("ram_user"))) static struct msbc_encoder_state encoder_state = {0};
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static uint8_t msbc_encode_inited = 0;
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int msbc_encoder_init(void)
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{
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static SBC_ENC_PARAMS msbc_context = {
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.s16NumOfBlocks = 15,
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.s16NumOfSubBands = 8,
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.s16AllocationMethod = SBC_LOUDNESS,
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.s16BitPool = 26,
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.s16ChannelMode = SBC_MONO,
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.s16NumOfChannels = 1,
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.mSBCEnabled = 1,
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.s16SamplingFreq = SBC_sf16000,
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};
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// int status = 0;
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encoder_state.context = &msbc_context;
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encoder_state.context->pu8Packet = encoder_state.sbc_packet;
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SBC_Encoder_Init(encoder_state.context);
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msbc_encode_inited = 1;
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return 0;
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}
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int msbc_encoder_num_audio_frames(void)
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{
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SBC_ENC_PARAMS * context = encoder_state.context;
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return context->s16NumOfSubBands * context->s16NumOfBlocks;
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}
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uint8_t * msbc_encoder_sbc_buffer(void)
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{
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SBC_ENC_PARAMS * context = encoder_state.context;
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return context->pu8Packet;
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}
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uint16_t msbc_encoder_sbc_buffer_length(void)
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{
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SBC_ENC_PARAMS * context = encoder_state.context;
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return context->u16PacketLength;
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}
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void __attribute__((section("ram_sbc_code"))) msbc_encoder_process_data(int16_t * input_buffer)
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{
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if (!msbc_encode_inited) {
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printf("SBC encoder: sbc state is NULL, call btstack_sbc_encoder_init to initialize it\r\n");
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}
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SBC_ENC_PARAMS * context = encoder_state.context;
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context->ps16PcmBuffer = input_buffer;
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if (context->mSBCEnabled) {
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context->pu8Packet[0] = 0xad;
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}
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SBC_Encoder(context);
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}
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