66 lines
1.8 KiB
C
66 lines
1.8 KiB
C
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#include <speex/speex.h>
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#include <stdio.h>
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/*The frame size in hardcoded for this sample code but it doesn't have to be*/
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#define FRAME_SIZE 160
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int main(int argc, char **argv)
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{
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char *outFile;
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FILE *fout;
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/*Holds the audio that will be written to file (16 bits per sample)*/
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short out[FRAME_SIZE];
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/*Speex handle samples as float, so we need an array of floats*/
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float output[FRAME_SIZE];
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char cbits[200];
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int nbBytes;
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/*Holds the state of the decoder*/
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void *state;
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/*Holds bits so they can be read and written to by the Speex routines*/
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SpeexBits bits;
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int i, tmp;
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/*Create a new decoder state in narrowband mode*/
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state = speex_decoder_init(&speex_nb_mode);
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/*Set the perceptual enhancement on*/
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tmp=1;
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speex_decoder_ctl(state, SPEEX_SET_ENH, &tmp);
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outFile = argv[1];
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fout = fopen(outFile, "w");
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/*Initialization of the structure that holds the bits*/
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speex_bits_init(&bits);
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while (1)
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{
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/*Read the size encoded by sampleenc, this part will likely be
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different in your application*/
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fread(&nbBytes, sizeof(int), 1, stdin);
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fprintf (stderr, "nbBytes: %d\n", nbBytes);
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if (feof(stdin))
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break;
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/*Read the "packet" encoded by sampleenc*/
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fread(cbits, 1, nbBytes, stdin);
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/*Copy the data into the bit-stream struct*/
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speex_bits_read_from(&bits, cbits, nbBytes);
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/*Decode the data*/
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speex_decode(state, &bits, output);
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/*Copy from float to short (16 bits) for output*/
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for (i=0;i<FRAME_SIZE;i++)
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out[i]=output[i];
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/*Write the decoded audio to file*/
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fwrite(out, sizeof(short), FRAME_SIZE, fout);
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}
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/*Destroy the decoder state*/
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speex_decoder_destroy(state);
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/*Destroy the bit-stream truct*/
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speex_bits_destroy(&bits);
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fclose(fout);
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return 0;
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}
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