diff options
Diffstat (limited to 'test/amrnb-dec.c')
-rw-r--r-- | test/amrnb-dec.c | 87 |
1 files changed, 87 insertions, 0 deletions
diff --git a/test/amrnb-dec.c b/test/amrnb-dec.c new file mode 100644 index 0000000..f558392 --- /dev/null +++ b/test/amrnb-dec.c @@ -0,0 +1,87 @@ +/* ------------------------------------------------------------------ + * Copyright (C) 2009 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 <string.h> +#include "wavwriter.h" +#include <interf_dec.h> + +/* From WmfDecBytesPerFrame in dec_input_format_tab.cpp */ +const int sizes[] = { 12, 13, 15, 17, 19, 20, 26, 31, 5, 6, 5, 5, 0, 0, 0, 0 }; + + +int main(int argc, char *argv[]) { + FILE* in; + char header[6]; + int n; + void *wav, *amr; + if (argc < 3) { + fprintf(stderr, "%s in.amr out.wav\n", argv[0]); + return 1; + } + + in = fopen(argv[1], "rb"); + if (!in) { + perror(argv[1]); + return 1; + } + n = fread(header, 1, 6, in); + if (n != 6 || memcmp(header, "#!AMR\n", 6)) { + fprintf(stderr, "Bad header\n"); + return 1; + } + + wav = wav_write_open(argv[2], 8000, 16, 1); + if (!wav) { + fprintf(stderr, "Unable to open %s\n", argv[2]); + return 1; + } + + amr = Decoder_Interface_init(); + while (1) { + uint8_t buffer[500], littleendian[320], *ptr; + int size, i; + int16_t outbuffer[160]; + /* Read the mode byte */ + n = fread(buffer, 1, 1, in); + if (n <= 0) + break; + /* Find the packet size */ + size = sizes[(buffer[0] >> 3) & 0x0f]; + n = fread(buffer + 1, 1, size, in); + if (n != size) + break; + + /* Decode the packet */ + Decoder_Interface_Decode(amr, buffer, outbuffer, 0); + + /* Convert to little endian and write to wav */ + ptr = littleendian; + for (i = 0; i < 160; i++) { + *ptr++ = (outbuffer[i] >> 0) & 0xff; + *ptr++ = (outbuffer[i] >> 8) & 0xff; + } + wav_write_data(wav, littleendian, 320); + } + fclose(in); + Decoder_Interface_exit(amr); + wav_write_close(wav); + return 0; +} + |