mirror of https://github.com/mpv-player/mpv
259 lines
6.3 KiB
C
259 lines
6.3 KiB
C
/*
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* ao_jack - JACK audio output driver for MPlayer
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*
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* Kamil Strzelecki < esack at browarek.net >
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*
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* This driver is distribuited under terms of GPL
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*
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* It uses bio2jack (http://bio2jack.sf.net/).
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*
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*/
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#include <stdio.h>
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#include <jack/jack.h>
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#include "audio_out.h"
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#include "audio_out_internal.h"
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#include "libaf/af_format.h"
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#include "config.h"
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#include "mp_msg.h"
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//#include "bio2jack.h"
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static int driver = 0;
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long latency = 0;
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long approx_bytes_in_jackd = 0;
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//bio2jack stuff:
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#define ERR_SUCCESS 0
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#define ERR_OPENING_JACK 1
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#define ERR_RATE_MISMATCH 2
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#define ERR_BYTES_PER_FRAME_INVALID 3
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enum status_enum { PLAYING, PAUSED, STOPPED, CLOSED, RESET };
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void JACK_Init(void);
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int JACK_Open(int* deviceID, unsigned int bits_per_sample, unsigned long *rate, int channels);
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int JACK_Close(int deviceID); /* return 0 for success */
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void JACK_Reset(int deviceID); /* free all buffered data and reset several values in the device */
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long JACK_Write(int deviceID, char *data, unsigned long bytes); /* returns the number of bytes written */
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long JACK_GetJackLatency(int deviceID); /* return the latency in milliseconds of jack */
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int JACK_SetState(int deviceID, enum status_enum state); /* playing, paused, stopped */
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int JACK_SetAllVolume(int deviceID, unsigned int volume);
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int JACK_SetVolumeForChannel(int deviceID, unsigned int channel, unsigned int volume);
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void JACK_GetVolumeForChannel(int deviceID, unsigned int channel, unsigned int *volume);
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//
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static ao_info_t info =
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{
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"JACK audio output",
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"jack",
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"Kamil Strzelecki <esack@browarek.net>",
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""
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};
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LIBAO_EXTERN(jack)
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static int control(int cmd, void *arg)
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{
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switch(cmd) {
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case AOCONTROL_GET_VOLUME:
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{
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ao_control_vol_t *vol = (ao_control_vol_t *)arg;
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unsigned int l, r;
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JACK_GetVolumeForChannel(driver, 0, &l);
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JACK_GetVolumeForChannel(driver, 1, &r);
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vol->left = (float )l;
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vol->right = (float )r;
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return CONTROL_OK;
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}
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case AOCONTROL_SET_VOLUME:
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{
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ao_control_vol_t *vol = (ao_control_vol_t *)arg;
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unsigned int l = (int )vol->left,
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r = (int )vol->right,
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avg_vol = (l + r) / 2,
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err = 0;
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switch (ao_data.channels) {
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case 6:
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if((err = JACK_SetVolumeForChannel(driver, 5, avg_vol))) {
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mp_msg(MSGT_AO, MSGL_ERR,
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"AO: [Jack] Setting lfe volume failed, error %d\n",err);
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return CONTROL_ERROR;
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}
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case 5:
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if((err = JACK_SetVolumeForChannel(driver, 4, avg_vol))) {
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mp_msg(MSGT_AO, MSGL_ERR,
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"AO: [Jack] Setting center volume failed, error %d\n",err);
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return CONTROL_ERROR;
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}
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case 4:
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if((err = JACK_SetVolumeForChannel(driver, 3, r))) {
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mp_msg(MSGT_AO, MSGL_ERR,
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"AO: [Jack] Setting rear right volume failed, error %d\n",err);
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return CONTROL_ERROR;
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}
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case 3:
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if((err = JACK_SetVolumeForChannel(driver, 2, l))) {
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mp_msg(MSGT_AO, MSGL_ERR,
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"AO: [Jack] Setting rear left volume failed, error %d\n",err);
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return CONTROL_ERROR;
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}
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case 2:
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if((err = JACK_SetVolumeForChannel(driver, 1, r))) {
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mp_msg(MSGT_AO, MSGL_ERR,
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"AO: [Jack] Setting right volume failed, error %d\n",err);
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return CONTROL_ERROR;
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}
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case 1:
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if((err = JACK_SetVolumeForChannel(driver, 0, l))) {
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mp_msg(MSGT_AO, MSGL_ERR,
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"AO: [Jack] Setting left volume failed, error %d\n",err);
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return CONTROL_ERROR;
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}
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}
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return CONTROL_OK;
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}
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}
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return(CONTROL_UNKNOWN);
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}
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static int init(int rate_hz, int channels, int format, int flags)
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{
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int err, m, frag_spec;
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unsigned long rate;
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unsigned int bits_per_sample;
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unsigned long jack_port_flags=JackPortIsPhysical;
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unsigned int jack_port_name_count=0;
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const char *jack_port_name=NULL;
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mp_msg(MSGT_AO, MSGL_INFO, "AO: [Jack] Initialising library.\n");
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JACK_Init();
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if (ao_subdevice) {
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jack_port_flags = 0;
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jack_port_name_count = 1;
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jack_port_name = ao_subdevice;
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mp_msg(MSGT_AO, MSGL_INFO, "AO: [Jack] Trying to use jack device:%s.\n", ao_subdevice);
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}
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switch (format) {
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case AF_FORMAT_U8:
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case AF_FORMAT_S8:
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format = AF_FORMAT_U8;
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bits_per_sample = 8;
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m = 1;
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break;
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default:
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format = AF_FORMAT_S16_LE;
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bits_per_sample = 16;
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m = 2;
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break;
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}
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rate = rate_hz;
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err = JACK_OpenEx(&driver, bits_per_sample, &rate, channels, channels,
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&jack_port_name, jack_port_name_count, jack_port_flags);
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/* if sample rates doesn't match try to open device with jack's rate and
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* let mplayer convert it (rate now contains that which jackd use) */
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if(err == ERR_RATE_MISMATCH) {
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mp_msg(MSGT_AO, MSGL_INFO,
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"AO: [Jack] Sample rate mismatch, trying to resample.\n");
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err = JACK_OpenEx(&driver, bits_per_sample, &rate, channels, channels,
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&jack_port_name, jack_port_name_count, jack_port_flags);
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}
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/* any other error */
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if(err != ERR_SUCCESS) {
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mp_msg(MSGT_AO, MSGL_ERR,
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"AO: [Jack] JACK_Open() failed, error %d\n", err);
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return 0;
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}
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err = JACK_SetAllVolume(driver, 100);
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if(err != ERR_SUCCESS) {
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// This is not fatal, but would be peculiar...
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mp_msg(MSGT_AO, MSGL_ERR,
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"AO: [Jack] JACK_SetAllVolume() failed, error %d\n", err);
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}
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latency = JACK_GetJackLatency(driver);
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ao_data.format = format;
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ao_data.channels = channels;
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ao_data.samplerate = rate;
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ao_data.bps = ( rate * channels * m );
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// Rather rough way to find out the rough number of bytes buffered
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approx_bytes_in_jackd = JACK_GetJackBufferedBytes(driver) * 2;
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mp_msg(MSGT_AO, MSGL_INFO,
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"AO: [Jack] OK. I'm ready to go (%d Hz/%d channels/%d bit)\n",
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ao_data.samplerate, ao_data.channels, bits_per_sample);
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return 1;
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}
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static void uninit(int immed)
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{
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int errval = 0;
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if((errval = JACK_Close(driver)))
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mp_msg(MSGT_AO, MSGL_ERR,
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"AO: [Jack] error closing device, error %d\n", errval);
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}
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static int play(void* data,int len,int flags)
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{
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return JACK_Write(driver, data, len);
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}
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static void audio_pause()
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{
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JACK_SetState(driver, PAUSED);
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}
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static void audio_resume()
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{
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JACK_SetState(driver, PLAYING);
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}
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static void reset()
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{
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JACK_Reset(driver);
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latency = JACK_GetJackLatency(driver);
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// Rather rough way to find out the rough number of bytes buffered
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approx_bytes_in_jackd = JACK_GetJackBufferedBytes(driver) * 2;
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}
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static int get_space()
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{
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return JACK_GetBytesFreeSpace(driver);
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}
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static float get_delay()
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{
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float ret = 0;
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ret = (JACK_GetBytesStored(driver) + approx_bytes_in_jackd + latency) / (float)ao_data.bps;
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return ret;
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}
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