buffered_reader_t *buffered_reader_open(const char *path, int32_t buffer_size, int32_t seek_mode)
{
buffered_reader_t *reader = malloc(sizeof(buffered_reader_t));
long long result;
if (reader == 0)
return 0;
memset(reader, 0, sizeof(buffered_reader_t));
reader->cache_enabled = 1;
reader->handle = -1;
reader->buffer_size = buffer_size;
reader->seek_mode = seek_mode;
reader->buffer_0 = malloc_64(reader->buffer_size);
if (reader->buffer_0 == 0) {
buffered_reader_close(reader);
return 0;
}
reader->buffer_1 = malloc_64(reader->buffer_size);
if (reader->buffer_1 == 0) {
buffered_reader_close(reader);
return 0;
}
reader->buffer_2 = malloc_64(reader->buffer_size);
if (reader->buffer_2 == 0) {
buffered_reader_close(reader);
return 0;
}
reader->handle = sceIoOpen(path, PSP_O_RDONLY, 0777);
if (reader->handle < 0) {
buffered_reader_close(reader);
return 0;
}
if (sceIoChangeAsyncPriority(reader->handle, 0x10) < 0) {
buffered_reader_close(reader);
return 0;
}
reader->length = sceIoLseek32(reader->handle, 0, PSP_SEEK_END);
reader->first_buffer = reader->buffer_0;
reader->second_buffer = reader->buffer_1;
reader->third_buffer = reader->buffer_2;
sceIoLseek32(reader->handle, reader->position_0, PSP_SEEK_SET);
sceIoReadAsync(reader->handle, reader->first_buffer, reader->position_1 - reader->position_0);
sceIoWaitAsync(reader->handle, &result);
sceIoLseek32(reader->handle, reader->position_1, PSP_SEEK_SET);
sceIoReadAsync(reader->handle, reader->second_buffer, reader->position_2 - reader->position_1);
sceIoWaitAsync(reader->handle, &result);
sceIoLseek32(reader->handle, reader->position_2, PSP_SEEK_SET);
sceIoReadAsync(reader->handle, reader->third_buffer, reader->position_3 - reader->position_2);
return reader;
}
/**
* 停止MP3音乐文件的播放，销毁所占有的线程、资源等
*
* @note 不可以在播放线程中调用，必须能够多次重复调用而不死机
*
* @return 成功时返回0
*/
static int mp3_end(void)
{
dbg_printf(d, "%s", __func__);
__end();
xAudioEnd();
g_status = ST_STOPPED;
mad_stream_finish(&stream);
mad_synth_finish(&synth);
mad_frame_finish(&frame);
if (use_me) {
if (mp3_getEDRAM)
xrAudiocodecReleaseEDRAM(mp3_codec_buffer);
}
free_mp3_info(&mp3info);
free_bitrate(&g_inst_br);
if (mp3_data.use_buffer) {
if (mp3_data.r != NULL) {
buffered_reader_close(mp3_data.r);
mp3_data.r = NULL;
}
} else {
if (mp3_data.fd >= 0) {
xrIoClose(mp3_data.fd);
mp3_data.fd = -1;
}
}
if (g_buff != NULL) {
xAudioFree(g_buff);
g_buff = NULL;
}
generic_end();
return 0;
}
