static
pcm_reader_t *open_input(aacenc_param_ex_t *params)
{
pcm_io_context_t io = { 0 };
pcm_reader_t *reader = 0;
struct stat stb = { 0 };
if ((params->input_fp = aacenc_fopen(params->input_filename, "rb")) == 0) {
aacenc_fprintf(stderr, "ERROR: %s: %s\n", params->input_filename,
strerror(errno));
goto END;
}
io.cookie = params->input_fp;
if (fstat(fileno(params->input_fp), &stb) == 0
&& (stb.st_mode & S_IFMT) == S_IFREG)
io.vtbl = &pcm_io_vtbl;
else
io.vtbl = &pcm_io_vtbl_noseek;
if (params->is_raw) {
int bytes_per_channel;
pcm_sample_description_t desc = { 0 };
if (parse_raw_spec(params->raw_format, &desc) < 0) {
fprintf(stderr, "ERROR: invalid raw-format spec\n");
goto END;
}
desc.sample_rate = params->raw_rate;
desc.channels_per_frame = params->raw_channels;
bytes_per_channel = (desc.bits_per_channel + 7) / 8;
desc.bytes_per_frame = params->raw_channels * bytes_per_channel;
if ((reader = raw_open(&io, &desc)) == 0) {
fprintf(stderr, "ERROR: failed to open raw input\n");
goto END;
}
} else {
int c;
ungetc(c = getc(params->input_fp), params->input_fp);
switch (c) {
case 'R':
if ((reader = wav_open(&io, params->ignore_length)) == 0) {
fprintf(stderr, "ERROR: broken / unsupported input file\n");
goto END;
}
break;
case 'c':
params->source_tag_ctx.add = aacenc_add_tag_entry_to_store;
params->source_tag_ctx.add_ctx = ¶ms->source_tags;
if ((reader = caf_open(&io,
aacenc_translate_generic_text_tag,
¶ms->source_tag_ctx)) == 0) {
fprintf(stderr, "ERROR: broken / unsupported input file\n");
goto END;
}
break;
default:
fprintf(stderr, "ERROR: unsupported input file\n");
goto END;
}
}
if ((reader = pcm_open_sint16_converter(reader)) != 0)
reader = extrapolater_open(reader);
return reader;
END:
return 0;
}
int main(int argc, char **argv)
{
wav_io_context_t wav_io = { read_callback, seek_callback, tell_callback };
m4af_io_callbacks_t
m4af_io = { read_callback, write_callback, seek_callback, tell_callback };
aacenc_param_ex_t params = { 0 };
int result = 2;
FILE *ifp = 0;
FILE *ofp = 0;
char *output_filename = 0;
#ifdef USE_LIBSNDFILE
SNDFILE* snd = NULL;
SF_INFO snd_info;
pcm_sample_description_t snd_desc = { 0 };
#else
wav_reader_t *wavf = 0;
#endif
HANDLE_AACENCODER encoder = 0;
AACENC_InfoStruct aacinfo = { 0 };
m4af_ctx_t *m4af = 0;
const pcm_sample_description_t *sample_format;
int downsampled_timescale = 0;
int frame_count = 0;
struct stat stb = { 0 };
setlocale(LC_CTYPE, "");
setbuf(stderr, 0);
if (parse_options(argc, argv, ¶ms) < 0)
return 1;
#ifdef USE_LIBSNDFILE
if ((snd = sf_open (params.input_filename, SFM_READ, &snd_info)) == NULL) {
fprintf(stderr, "ERROR: broken / unsupported input file\n");
goto END;
}
#ifdef USE_LIBSAMPLERATE
if(params.resample) {
snd_desc.sample_rate = params.resample;
printf("resampling to %dhz\n", snd_desc.sample_rate);
} else {
snd_desc.sample_rate = snd_info.samplerate;
}
snd_desc.sample_type = PCM_TYPE_FLOAT; // always -- libsndfile does the conversion for us
snd_desc.bits_per_channel = sizeof(float)*8;
#else
snd_desc.sample_rate = snd_info.samplerate;
snd_desc.sample_type = PCM_TYPE_SINT; // always -- libsndfile does the conversion for us
snd_desc.bits_per_channel = sizeof(short)*8;
#endif
snd_desc.channels_per_frame = snd_info.channels;
snd_desc.bytes_per_frame = snd_info.channels * (snd_desc.bits_per_channel / 8);
snd_desc.channel_mask = 0;
sample_format = &snd_desc;
#else
if ((ifp = aacenc_fopen(params.input_filename, "rb")) == 0) {
aacenc_fprintf(stderr, "ERROR: %s: %s\n", params.input_filename,
strerror(errno));
goto END;
}
if (fstat(fileno(ifp), &stb) == 0 && (stb.st_mode & S_IFMT) != S_IFREG) {
wav_io.seek = 0;
wav_io.tell = 0;
}
if (!params.is_raw) {
if ((wavf = wav_open(&wav_io, ifp, params.ignore_length)) == 0) {
fprintf(stderr, "ERROR: broken / unsupported input file\n");
goto END;
}
} else {
int bytes_per_channel;
pcm_sample_description_t desc = { 0 };
if (parse_raw_spec(params.raw_format, &desc) < 0) {
fprintf(stderr, "ERROR: invalid raw-format spec\n");
goto END;
}
desc.sample_rate = params.raw_rate;
desc.channels_per_frame = params.raw_channels;
bytes_per_channel = (desc.bits_per_channel + 7) / 8;
desc.bytes_per_frame = params.raw_channels * bytes_per_channel;
if ((wavf = raw_open(&wav_io, ifp, &desc)) == 0) {
fprintf(stderr, "ERROR: failed to open raw input\n");
goto END;
}
}
sample_format = wav_get_format(wavf);
#endif
if (aacenc_init(&encoder, (aacenc_param_t*)¶ms, sample_format,
&aacinfo) < 0)
goto END;
if (!params.output_filename) {
const char *ext = params.transport_format ? ".aac" : ".m4a";
output_filename = generate_output_filename(params.input_filename, ext);
params.output_filename = output_filename;
}
if ((ofp = aacenc_fopen(params.output_filename, "wb+")) == 0) {
aacenc_fprintf(stderr, "ERROR: %s: %s\n", params.output_filename,
strerror(errno));
goto END;
}
handle_signals();
if (!params.transport_format) {
uint32_t scale;
unsigned framelen = aacinfo.frameLength;
int sbr_mode = aacenc_is_sbr_active((aacenc_param_t*)¶ms);
int sig_mode = aacEncoder_GetParam(encoder, AACENC_SIGNALING_MODE);
if (sbr_mode && !sig_mode)
downsampled_timescale = 1;
scale = sample_format->sample_rate >> downsampled_timescale;
if ((m4af = m4af_create(M4AF_CODEC_MP4A, scale, &m4af_io, ofp)) < 0)
goto END;
m4af_set_decoder_specific_info(m4af, 0, aacinfo.confBuf,
aacinfo.confSize);
m4af_set_fixed_frame_duration(m4af, 0,
framelen >> downsampled_timescale);
m4af_set_priming_mode(m4af, params.gapless_mode + 1);
m4af_begin_write(m4af);
}