114 lines
3.0 KiB
C
114 lines
3.0 KiB
C
/* ------------------------------------------------------------------
|
|
* Copyright (C) 2013 Martin Storsjo
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
|
|
* express or implied.
|
|
* See the License for the specific language governing permissions
|
|
* and limitations under the License.
|
|
* -------------------------------------------------------------------
|
|
*/
|
|
|
|
#include <stdio.h>
|
|
#include <stdint.h>
|
|
#include <unistd.h>
|
|
#include <stdlib.h>
|
|
#include "libAACdec/include/aacdecoder_lib.h"
|
|
#include "wavwriter.h"
|
|
|
|
int main(int argc, char *argv[]) {
|
|
const char *infile, *outfile;
|
|
FILE *in;
|
|
void *wav = NULL;
|
|
int output_size;
|
|
uint8_t *output_buf;
|
|
int16_t *decode_buf;
|
|
HANDLE_AACDECODER handle;
|
|
int frame_size = 0;
|
|
if (argc < 3) {
|
|
fprintf(stderr, "%s in.aac out.wav\n", argv[0]);
|
|
return 1;
|
|
}
|
|
infile = argv[1];
|
|
outfile = argv[2];
|
|
|
|
handle = aacDecoder_Open(TT_MP4_ADTS, 1);
|
|
in = fopen(infile, "rb");
|
|
if (!in) {
|
|
perror(infile);
|
|
return 1;
|
|
}
|
|
|
|
output_size = 8*2*1024;
|
|
output_buf = (uint8_t*) malloc(output_size);
|
|
decode_buf = (int16_t*) malloc(output_size);
|
|
|
|
while (1) {
|
|
uint8_t packet[10240], *ptr = packet;
|
|
int n, packet_size, i;
|
|
UINT valid;
|
|
AAC_DECODER_ERROR err;
|
|
n = fread(packet, 1, 7, in);
|
|
if (n != 7)
|
|
break;
|
|
if (packet[0] != 0xff || (packet[1] & 0xf0) != 0xf0) {
|
|
fprintf(stderr, "Not an ADTS packet\n");
|
|
break;
|
|
}
|
|
packet_size = ((packet[3] & 0x03) << 11) | (packet[4] << 3) | (packet[5] >> 5);
|
|
n = fread(packet + 7, 1, packet_size - 7, in);
|
|
if (n != packet_size - 7) {
|
|
fprintf(stderr, "Partial packet\n");
|
|
break;
|
|
}
|
|
valid = packet_size;
|
|
err = aacDecoder_Fill(handle, &ptr, &packet_size, &valid);
|
|
if (err != AAC_DEC_OK) {
|
|
fprintf(stderr, "Fill failed: %x\n", err);
|
|
break;
|
|
}
|
|
err = aacDecoder_DecodeFrame(handle, decode_buf, output_size, 0);
|
|
if (err == AAC_DEC_NOT_ENOUGH_BITS)
|
|
continue;
|
|
if (err != AAC_DEC_OK) {
|
|
fprintf(stderr, "Decode failed: %x\n", err);
|
|
continue;
|
|
}
|
|
if (!wav) {
|
|
CStreamInfo *info = aacDecoder_GetStreamInfo(handle);
|
|
if (!info || info->sampleRate <= 0) {
|
|
fprintf(stderr, "No stream info\n");
|
|
break;
|
|
}
|
|
frame_size = info->frameSize * info->numChannels;
|
|
// Note, this probably doesn't return channels > 2 in the right order for wav
|
|
wav = wav_write_open(outfile, info->sampleRate, 16, info->numChannels);
|
|
if (!wav) {
|
|
perror(outfile);
|
|
break;
|
|
}
|
|
}
|
|
for (i = 0; i < frame_size; i++) {
|
|
uint8_t* out = &output_buf[2*i];
|
|
out[0] = decode_buf[i] & 0xff;
|
|
out[1] = decode_buf[i] >> 8;
|
|
}
|
|
wav_write_data(wav, output_buf, 2*frame_size);
|
|
}
|
|
free(output_buf);
|
|
free(decode_buf);
|
|
fclose(in);
|
|
if (wav)
|
|
wav_write_close(wav);
|
|
aacDecoder_Close(handle);
|
|
return 0;
|
|
}
|
|
|