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112 lines
2.7 KiB
112 lines
2.7 KiB
15 years ago
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#ifndef MPG123PLAYER_IMPL_H
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#define MPG123PLAYER_IMPL_H "$Id$"
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using namespace std;
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#if (defined(__GNU_LIBRARY__) && defined(_SEM_SEMUN_UNDEFINED)) || defined(__osf__) || defined(__sun__)
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/* union semun is defined by including <sys/sem.h> */
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/* according to X/OPEN we have to define it ourselves */
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union semun {
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int val; /* value for SETVAL */
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struct semid_ds *buf; /* buffer for IPC_STAT, IPC_SET */
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unsigned short int *array; /* array for GETALL, SETALL */
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struct seminfo *__buf; /* buffer for IPC_INFO */
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};
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#endif
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#define RESYNC_FRAMES 3
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extern "C" {
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#include "mpg123/mpg123.h"
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#include "dxhead.h"
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// These are provided to make mpg123 happy
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int audio_get_formats(struct audio_info_struct *ai);
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char *equalfile;
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struct parameter param;
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char *prgName;
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char *prgVersion;
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struct audio_info_struct ai;
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// We abuse these internal mpg123 objects
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extern double compute_bpf(struct frame *fr);
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extern double compute_tpf(struct frame *fr);
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extern void set_pointer(int, long);
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extern void audio_capabilities(struct audio_info_struct *);
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extern unsigned char *pcm_sample;
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extern int pcm_point;
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extern int audiobufsize;
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}
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#define BACKBUFSIZ 8132
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struct id3tag {
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char tag[3];
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char title[30];
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char artist[30];
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char album[30];
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char year[4];
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char comment[30];
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unsigned char genre;
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};
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namespace Arts {
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class mpg123PlayObject_impl
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: public mpg123PlayObject_skel, public StdSynthModule
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{
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public:
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mpg123PlayObject_impl();
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~mpg123PlayObject_impl();
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bool loadMedia(const string &filename);
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string description();
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poTime currentTime();
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poTime overallTime();
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poCapabilities capabilities();
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string mediaName();
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poState state();
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void play();
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void halt();
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void seek(const class poTime &t);
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void pause();
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void streamInit();
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void streamStart();
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void calculateBlock(unsigned long samples);
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void streamEnd();
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protected:
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// These are to enable seeking
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static void stream_jump_to_frame(struct frame *fr, int frame);
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static int calc_numframes(struct frame *);
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// This is to enable playing, what else?
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static void set_synth_functions(struct frame *fr);
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void initialise_decoder();
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int play_frame(int init);
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inline float conv_16le_float(short x)
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{ return static_cast<float>(x) / 32768.0; }
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int streaming, /*padded, cnt, junk_size, */ sample_freq /*frame_size*/;
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char mpeg_name[FILENAME_MAX+1];
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struct mpstr *mp;
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static int decoder_init;
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int buf_pos; // loops around the circular buffer
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poState mState;
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struct buf_t{
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float left[BACKBUFSIZ];
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float right[BACKBUFSIZ];
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unsigned long len; // total frames
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unsigned long pos; // last decoded frame
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double tpf; // time per frame, seconds
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} *shm_buf;
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int shm_id, child_pid;
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int buflen_sem;
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unsigned char *pcm_buf;
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};
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};
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#endif
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