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author | Oliver Kiehl | 2002-12-08 20:47:42 +0000 |
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committer | Oliver Kiehl | 2002-12-08 20:47:42 +0000 |
commit | a112545d7ebe9620aed629640f3504df54912b9d (patch) | |
tree | b4ab10b39745bd5894ccb3b912864e9fa52e6ce2 /sound | |
parent | 0ac3214fd581e6782b09dcffe220eed2bc09c3dd (diff) | |
download | scummvm-rg350-a112545d7ebe9620aed629640f3504df54912b9d.tar.gz scummvm-rg350-a112545d7ebe9620aed629640f3504df54912b9d.tar.bz2 scummvm-rg350-a112545d7ebe9620aed629640f3504df54912b9d.zip |
split alsa from mididrv
svn-id: r5890
Diffstat (limited to 'sound')
-rw-r--r-- | sound/mididrv.cpp | 222 |
1 files changed, 0 insertions, 222 deletions
diff --git a/sound/mididrv.cpp b/sound/mididrv.cpp index c13cb8e0f5..9e1ca82db8 100644 --- a/sound/mididrv.cpp +++ b/sound/mididrv.cpp @@ -655,225 +655,3 @@ MidiDriver *MidiDriver_SEQ_create() #endif - -#if defined(UNIX) && defined(USE_ALSA) - -#include <alsa/asoundlib.h> - -/* - * ALSA sequencer driver - * Mostly cut'n'pasted from Virtual Tiny Keyboard (vkeybd) by Takashi Iwai - * (you really rox, you know?) - */ - -#if SND_LIB_MINOR >= 6 -#define snd_seq_flush_output(x) snd_seq_drain_output(x) -#define snd_seq_set_client_group(x,name) /*nop */ -#define my_snd_seq_open(seqp) snd_seq_open(seqp, "hw", SND_SEQ_OPEN_OUTPUT, 0) -#else -/* SND_SEQ_OPEN_OUT causes oops on early version of ALSA */ -#define my_snd_seq_open(seqp) snd_seq_open(seqp, SND_SEQ_OPEN) -#endif - -/* - * parse address string - */ - -#define ADDR_DELIM ".:" - -class MidiDriver_ALSA:public MidiDriver_MPU401 { -public: - MidiDriver_ALSA(); - int open(int mode); - void close(); - void send(uint32 b); - void pause(bool p); - void set_stream_callback(void *param, StreamCallback *sc); - // void setPitchBendRange (byte channel, uint range); - -private: - void send_event(int do_flush); - snd_seq_event_t ev; - StreamCallback *_stream_proc; - void *_stream_param; - int _mode; - snd_seq_t *seq_handle; - int seq_client, seq_port; - int my_client, my_port; - static int parse_addr(char *arg, int *client, int *port); -}; - -MidiDriver_ALSA::MidiDriver_ALSA():_mode(0), seq_handle(0), seq_client(0), seq_port(0), my_client(0), -my_port(0) -{ -} - -int MidiDriver_ALSA::parse_addr(char *arg, int *client, int *port) -{ - char *p; - - if (isdigit(*arg)) { - if ((p = strpbrk(arg, ADDR_DELIM)) == NULL) - return -1; - *client = atoi(arg); - *port = atoi(p + 1); - } else { - if (*arg == 's' || *arg == 'S') { - *client = SND_SEQ_ADDRESS_SUBSCRIBERS; - *port = 0; - } else - return -1; - } - return 0; -} - -void MidiDriver_ALSA::send_event(int do_flush) -{ - snd_seq_ev_set_direct(&ev); - snd_seq_ev_set_source(&ev, my_port); - snd_seq_ev_set_dest(&ev, seq_client, seq_port); - - snd_seq_event_output(seq_handle, &ev); - if (do_flush) - snd_seq_flush_output(seq_handle); -} - -int MidiDriver_ALSA::open(int mode) -{ - char *var; - unsigned int caps; - - if (_mode != 0) - return MERR_ALREADY_OPEN; - - if (mode != MO_SIMPLE) - return MERR_STREAMING_NOT_AVAILABLE; - - _mode = mode; - - if (!(var = getenv("SCUMMVM_PORT"))) { - // default alsa port if none specified - if (parse_addr("65:0", &seq_client, &seq_port) < 0) { - error("Invalid port %s", var); - return -1; - } - } - else { - if (parse_addr(var, &seq_client, &seq_port) < 0) { - error("Invalid port %s", var); - return -1; - } - } - - if (my_snd_seq_open(&seq_handle)) { - error("Can't open sequencer"); - return -1; - } - - my_client = snd_seq_client_id(seq_handle); - snd_seq_set_client_name(seq_handle, "SCUMMVM"); - snd_seq_set_client_group(seq_handle, "input"); - - caps = SND_SEQ_PORT_CAP_READ; - if (seq_client == SND_SEQ_ADDRESS_SUBSCRIBERS) - caps = ~SND_SEQ_PORT_CAP_SUBS_READ; - my_port = - snd_seq_create_simple_port(seq_handle, "SCUMMVM", caps, - SND_SEQ_PORT_TYPE_MIDI_GENERIC | SND_SEQ_PORT_TYPE_APPLICATION); - if (my_port < 0) { - snd_seq_close(seq_handle); - error("Can't create port"); - return -1; - } - - if (seq_client != SND_SEQ_ADDRESS_SUBSCRIBERS) { - /* subscribe to MIDI port */ - if (snd_seq_connect_to(seq_handle, my_port, seq_client, seq_port) < 0) { - snd_seq_close(seq_handle); - error("Can't subscribe to MIDI port (%d:%d)", seq_client, seq_port); - return -1; - } - } - - printf("ALSA client initialised [%d:%d]\n", my_client, my_port); - - return 0; -} - -void MidiDriver_ALSA::close() -{ - _mode = 0; - if (seq_handle) - snd_seq_close(seq_handle); -} - - -void MidiDriver_ALSA::send(uint32 b) -{ - unsigned int midiCmd[4]; - ev.type = SND_SEQ_EVENT_OSS; - - midiCmd[3] = (b & 0xFF000000) >> 24; - midiCmd[2] = (b & 0x00FF0000) >> 16; - midiCmd[1] = (b & 0x0000FF00) >> 8; - midiCmd[0] = (b & 0x000000FF); - ev.data.raw32.d[0] = midiCmd[0]; - ev.data.raw32.d[1] = midiCmd[1]; - ev.data.raw32.d[2] = midiCmd[2]; - - unsigned char chanID = midiCmd[0] & 0x0F; - switch (midiCmd[0] & 0xF0) { - case 0x80: - snd_seq_ev_set_noteoff(&ev, chanID, midiCmd[1], midiCmd[2]); - send_event(1); - break; - case 0x90: - snd_seq_ev_set_noteon(&ev, chanID, midiCmd[1], midiCmd[2]); - send_event(1); - break; - case 0xB0: - /* is it this simple ? Wow... */ - snd_seq_ev_set_controller(&ev, chanID, midiCmd[1], midiCmd[2]); - send_event(1); - break; - case 0xC0: - snd_seq_ev_set_pgmchange(&ev, chanID, midiCmd[1]); - send_event(0); - break; - - case 0xE0:{ - // long theBend = ((((long)midiCmd[1] + (long)(midiCmd[2] << 7))) - 0x2000) / 4; - // snd_seq_ev_set_pitchbend(&ev, chanID, theBend); - long theBend = ((long)midiCmd[1] + (long)(midiCmd[2] << 7)) - 0x2000; - snd_seq_ev_set_pitchbend(&ev, chanID, theBend); - send_event(1); - } - break; - - default: - error("Unknown Command: %08x\n", (int)b); - /* I don't know if this works but, well... */ - send_event(1); - break; - } -} - -void MidiDriver_ALSA::pause(bool p) -{ - if (_mode == MO_STREAMING) { - /* Err... and what? */ - } -} - -void MidiDriver_ALSA::set_stream_callback(void *param, StreamCallback *sc) -{ - _stream_param = param; - _stream_proc = sc; -} - -MidiDriver *MidiDriver_ALSA_create() -{ - return new MidiDriver_ALSA(); -} - -#endif |