initial commit

lib/amb1_sdk/common/audio/g711/g711_codec.h

@@ -0,0 +1,24 @@
+#ifndef _G711_CODEC_H
+#define _G711_CODEC_H
+#include "basic_types.h"
+
+typedef enum {
+	I2S_MODE_UNKNOWN = -1,
+	I2S_MODE_G711A = 1,
+	I2S_MODE_G711U = 2 
+}I2S_mode;
+
+typedef struct {
+	I2S_mode mode;	//intend to encode as G711A or G711U
+	int len;	//data length
+//	_sema RWSema;
+	unsigned char *raw_data;	//address of buffered data (not encoded
+	int data_start; // a shift value to show where the data starts
+	int data_end;	// a shift value shows data ending
+}i2s_buf_context;
+
+//void encoder_init(int mode);
+int G711_encoder(short *source, unsigned char *des, int mode, int size);
+int G711_decoder(unsigned char *source, short *des, int mode, int size);
+int mono2stereo(unsigned char *src, unsigned char *dst, int size, int wl);
+#endif

lib/amb1_sdk/common/audio/mp3/mp3_codec.h

@@ -0,0 +1,30 @@
+#ifndef __MINIMP3_DEC_H_INCLUDED__
+#define __MINIMP3_DEC_H_INCLUDED__
+
+#define MP3_MAX_SAMPLES_PER_FRAME (1152*2)
+
+#include <stdio.h>
+#include <stdint.h>
+#include <math.h>
+#include <stdlib.h>
+#include <string.h>
+
+
+#ifndef M_PI
+#define M_PI (3.14159265358979323846)
+#endif
+
+typedef struct _mp3_info {
+    int sample_rate;
+    int channels;
+    int audio_bytes;  // generated amount of audio per frame
+} mp3_info_t;
+
+typedef void* mp3_decoder_t;
+
+extern mp3_decoder_t mp3_create(void);
+extern int mp3_decode(mp3_decoder_t *dec, void *buf, int bytes, signed short *out, mp3_info_t *info);
+extern void mp3_done(mp3_decoder_t *dec);
+#define mp3_free(dec) do { mp3_done(dec); dec = NULL; } while(0)
+
+#endif//__MINIMP3_DEC_H_INCLUDED__