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Diffstat (limited to 'test/amrwb-dec.cpp')
-rw-r--r-- | test/amrwb-dec.cpp | 81 |
1 files changed, 81 insertions, 0 deletions
diff --git a/test/amrwb-dec.cpp b/test/amrwb-dec.cpp new file mode 100644 index 0000000..740181d --- /dev/null +++ b/test/amrwb-dec.cpp @@ -0,0 +1,81 @@ +/* ------------------------------------------------------------------ + * 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 "wav.h" +extern "C" { +#include <dec_if.h> +} + +/* From pvamrwbdecoder_api.h, by dividing by 8 and rounding up */ +const int sizes[] = { 17, 23, 32, 36, 40, 46, 50, 58, 60, 5, -1, -1, -1, -1, -1, -1 }; + +int main(int argc, char *argv[]) { + if (argc < 2) { + fprintf(stderr, "%s in.amr\n", argv[0]); + return 1; + } + + FILE* in = fopen(argv[1], "rb"); + if (!in) { + perror(argv[1]); + return 1; + } + char header[9]; + int n = fread(header, 1, 9, in); + if (n != 9 || memcmp(header, "#!AMR-WB\n", 9)) { + fprintf(stderr, "Bad header\n"); + return 1; + } + + WavWriter wav("out.wav", 16000, 16, 1); + void* amr = D_IF_init(); + while (true) { + uint8_t buffer[500]; + /* Read the mode byte */ + n = fread(buffer, 1, 1, in); + if (n <= 0) + break; + /* Find the packet size */ + int size = sizes[(buffer[0] >> 3) & 0x0f]; + if (size <= 0) + break; + n = fread(buffer + 1, 1, size, in); + if (n != size) + break; + + /* Decode the packet */ + int16_t outbuffer[320]; + D_IF_decode(amr, buffer, outbuffer, 0); + + /* Convert to little endian and write to wav */ + uint8_t littleendian[640]; + uint8_t* ptr = littleendian; + for (int i = 0; i < 320; i++) { + *ptr++ = (outbuffer[i] >> 0) & 0xff; + *ptr++ = (outbuffer[i] >> 8) & 0xff; + } + wav.writeData(littleendian, 640); + } + fclose(in); + D_IF_exit(amr); + return 0; +} + |