diff options
Diffstat (limited to 'audio/pcm_bluetooth.c')
| -rw-r--r-- | audio/pcm_bluetooth.c | 96 |
1 files changed, 73 insertions, 23 deletions
diff --git a/audio/pcm_bluetooth.c b/audio/pcm_bluetooth.c index 5e4da877..c6df710b 100644 --- a/audio/pcm_bluetooth.c +++ b/audio/pcm_bluetooth.c @@ -89,15 +89,14 @@ struct rtp_payload { struct bluetooth_a2dp { sbc_t sbc; /* Codec data */ + int codesize; /* SBC codesize */ int samples; /* Number of encoded samples */ - time_t timestamp; /* Codec samples timestamp */ uint8_t buffer[BUFFER_SIZE]; /* Codec transfer buffer */ int count; /* Codec transfer buffer counter */ int nsamples; /* Cumulative number of codec samples */ - struct timeval ntimestamp; /* Cumulative timeval */ - uint16_t seq_num; /* */ - int frame_count; /* */ + uint16_t seq_num; /* Cumulative packet sequence */ + int frame_count; /* Current frames in buffer*/ pthread_t hw_thread; /* Makes virtual hw pointer move */ int pipefd[2]; /* Inter thread communication */ @@ -184,6 +183,7 @@ iter_sleep: pthread_testcancel(); } } + static int bluetooth_a2dp_playback_start(snd_pcm_ioplug_t *io) { struct bluetooth_data *data = io->private_data; @@ -534,8 +534,6 @@ static int avdtp_write(struct bluetooth_data *data) struct rtp_payload *payload; struct bluetooth_a2dp *a2dp = &data->a2dp; - DBG(""); - header = (void *) a2dp->buffer; payload = (void *) (a2dp->buffer + sizeof(*header)); @@ -571,7 +569,6 @@ static snd_pcm_sframes_t bluetooth_a2dp_write(snd_pcm_ioplug_t *io, snd_pcm_uframes_t frames_to_read; int frame_size, encoded; uint8_t *buff; - static int codesize = 0; DBG("areas->step=%u areas->first=%u offset=%lu size=%lu", areas->step, areas->first, offset, size); @@ -601,21 +598,11 @@ static snd_pcm_sframes_t bluetooth_a2dp_write(snd_pcm_ioplug_t *io, snd_pcm_sw_params_free(swparams); } - if (codesize == 0) { - /* How much data can be encoded by sbc at a time? */ - codesize = a2dp->sbc.subbands * a2dp->sbc.blocks * - a2dp->sbc.channels * 2; - /* Reserv header space in outgoing buffer */ - a2dp->count = sizeof(struct rtp_header) + - sizeof(struct rtp_payload); - gettimeofday(&a2dp->ntimestamp, NULL); - } - frame_size = areas->step / 8; - if ((data->count + size * frame_size) <= codesize) + if ((data->count + size * frame_size) <= a2dp->codesize) frames_to_read = size; else - frames_to_read = (codesize - data->count) / frame_size; + frames_to_read = (a2dp->codesize - data->count) / frame_size; DBG("count=%d frames_to_read=%lu", data->count, frames_to_read); DBG("a2dp.count=%d cfg.pkt_len=%d", a2dp->count, data->cfg.pkt_len); @@ -629,13 +616,13 @@ static snd_pcm_sframes_t bluetooth_a2dp_write(snd_pcm_ioplug_t *io, /* Remember we have some frames in the pipe now */ data->count += frames_to_read * frame_size; - if (data->count != codesize) { + if (data->count != a2dp->codesize) { ret = frames_to_read; goto done; } /* Enough data to encode (sbc wants 1k blocks) */ - encoded = sbc_encode(&(a2dp->sbc), data->buffer, codesize); + encoded = sbc_encode(&(a2dp->sbc), data->buffer, a2dp->codesize); if (encoded <= 0) { DBG("Encoding error %d", encoded); goto done; @@ -717,7 +704,7 @@ static snd_pcm_ioplug_callback_t bluetooth_a2dp_capture = { #define ARRAY_NELEMS(a) (sizeof((a)) / sizeof((a)[0])) -static int bluetooth_hw_constraint(snd_pcm_ioplug_t *io) +static int bluetooth_hsp_hw_constraint(snd_pcm_ioplug_t *io) { struct bluetooth_data *data = io->private_data; struct ipc_data_cfg cfg = data->cfg; @@ -764,6 +751,61 @@ static int bluetooth_hw_constraint(snd_pcm_ioplug_t *io) return err; err = snd_pcm_ioplug_set_param_minmax(io, SND_PCM_IOPLUG_HW_PERIODS, + 2, 200); + if (err < 0) + return err; + + return 0; +} + +static int bluetooth_a2dp_hw_constraint(snd_pcm_ioplug_t *io) +{ + struct bluetooth_data *data = io->private_data; + struct bluetooth_a2dp *a2dp = &data->a2dp; + struct ipc_data_cfg cfg = data->cfg; + snd_pcm_access_t access_list[] = { + SND_PCM_ACCESS_RW_INTERLEAVED, + /* Mmap access is really useless fo this driver, but we + * support it because some pieces of software out there + * insist on using it */ + SND_PCM_ACCESS_MMAP_INTERLEAVED + }; + unsigned int format_list[] = { + SND_PCM_FORMAT_S16_LE + }; + int err; + + /* access type */ + err = snd_pcm_ioplug_set_param_list(io, SND_PCM_IOPLUG_HW_ACCESS, + ARRAY_NELEMS(access_list), access_list); + if (err < 0) + return err; + + /* supported formats */ + err = snd_pcm_ioplug_set_param_list(io, SND_PCM_IOPLUG_HW_FORMAT, + ARRAY_NELEMS(format_list), format_list); + if (err < 0) + return err; + + /* supported channels */ + err = snd_pcm_ioplug_set_param_minmax(io, SND_PCM_IOPLUG_HW_CHANNELS, + cfg.channels, cfg.channels); + if (err < 0) + return err; + + /* supported rate */ + err = snd_pcm_ioplug_set_param_minmax(io, SND_PCM_IOPLUG_HW_RATE, + cfg.rate, cfg.rate); + if (err < 0) + return err; + + /* supported block size */ + err = snd_pcm_ioplug_set_param_minmax(io, SND_PCM_IOPLUG_HW_PERIOD_BYTES, + a2dp->codesize, a2dp->codesize); + if (err < 0) + return err; + + err = snd_pcm_ioplug_set_param_minmax(io, SND_PCM_IOPLUG_HW_PERIODS, 2, 50); if (err < 0) return err; @@ -771,6 +813,7 @@ static int bluetooth_hw_constraint(snd_pcm_ioplug_t *io) return 0; } + static int bluetooth_recvmsg_fd(struct bluetooth_data *data) { char cmsg_b[CMSG_SPACE(sizeof(int))]; @@ -839,6 +882,9 @@ static int bluetooth_a2dp_init(struct bluetooth_data *data, a2dp->sbc.subbands = sbc->subbands; a2dp->sbc.blocks = sbc->blocks; a2dp->sbc.bitpool = sbc->bitpool; + a2dp->codesize = a2dp->sbc.subbands * a2dp->sbc.blocks * + a2dp->sbc.channels * 2; + a2dp->count = sizeof(struct rtp_header) + sizeof(struct rtp_payload); a2dp->pipefd[0] = -1; a2dp->pipefd[1] = -1; @@ -1021,7 +1067,11 @@ SND_PCM_PLUGIN_DEFINE_FUNC(bluetooth) if (err < 0) goto error; - err = bluetooth_hw_constraint(&data->io); + if (data->cfg.codec == CFG_CODEC_SBC) + err = bluetooth_a2dp_hw_constraint(&data->io); + else + err = bluetooth_hsp_hw_constraint(&data->io); + if (err < 0) { snd_pcm_ioplug_delete(&data->io); goto error; |