static adv_error mp3_read_id(unsigned char* id, unsigned channel, unsigned char* data, unsigned* pos, unsigned* run)
{
if (mp3_read(id+0, channel, data, pos, run) != 0)
return -1;
if (mp3_read(id+1, channel, data, pos, run) != 0)
return -1;
if (mp3_read(id+2, channel, data, pos, run) != 0)
return -1;
if (mp3_read(id+3, channel, data, pos, run) != 0)
return -1;
return 0;
}
LOCAL int stream_head_read(unsigned char *hbuf,uint32_t *newhead){
if(mp3_read(hbuf,4) != 4) return FALSE;
#ifdef ARCH_X86
*newhead = bswap_32(*((uint32_t*)hbuf));
#else
/*
* we may not be able to address unaligned 32-bit data on non-x86 cpus.
* Fall back to some portable code.
*/
*newhead =
hbuf[0] << 24 |
hbuf[1] << 16 |
hbuf[2] << 8 |
hbuf[3];
#endif
return TRUE;
}
static void
mp3_decode(struct decoder *decoder, struct input_stream *input_stream)
{
struct mp3_data data;
GError *error = NULL;
struct tag *tag = NULL;
struct audio_format audio_format;
if (!mp3_open(input_stream, &data, decoder, &tag)) {
if (decoder_get_command(decoder) == DECODE_COMMAND_NONE)
g_warning
("Input does not appear to be a mp3 bit stream.\n");
return;
}
if (!audio_format_init_checked(&audio_format,
data.frame.header.samplerate,
SAMPLE_FORMAT_S24_P32,
MAD_NCHANNELS(&data.frame.header),
&error)) {
g_warning("%s", error->message);
g_error_free(error);
if (tag != NULL)
tag_free(tag);
mp3_data_finish(&data);
return;
}
decoder_initialized(decoder, &audio_format,
data.input_stream->seekable, data.total_time);
if (tag != NULL) {
decoder_tag(decoder, input_stream, tag);
tag_free(tag);
}
while (mp3_read(&data)) ;
mp3_data_finish(&data);
}
static void
mp3_decode(struct decoder *decoder, struct input_stream *input_stream)
{
struct mp3_data data;
struct tag *tag = NULL;
struct replay_gain_info *replay_gain_info = NULL;
struct audio_format audio_format;
if (!mp3_open(input_stream, &data, decoder, &tag, &replay_gain_info)) {
if (decoder_get_command(decoder) == DECODE_COMMAND_NONE)
g_warning
("Input does not appear to be a mp3 bit stream.\n");
return;
}
mp3_audio_format(&data, &audio_format);
decoder_initialized(decoder, &audio_format,
data.input_stream->seekable, data.total_time);
if (tag != NULL) {
decoder_tag(decoder, input_stream, tag);
tag_free(tag);
}
while (mp3_read(&data, &replay_gain_info)) ;
if (replay_gain_info)
replay_gain_info_free(replay_gain_info);
if (decoder_get_command(decoder) == DECODE_COMMAND_SEEK &&
data.mute_frame == MUTEFRAME_SEEK)
decoder_command_finished(decoder);
mp3_data_finish(&data);
}
