Return-Path: From: Andrei Emeltchenko To: linux-bluetooth@vger.kernel.org Subject: [PATCHv6 01/11] android/hal-audio-hsp: Add open_output_stream() Date: Mon, 12 May 2014 11:56:59 +0300 Message-Id: <1399885029-6358-1-git-send-email-Andrei.Emeltchenko.news@gmail.com> Sender: linux-bluetooth-owner@vger.kernel.org List-ID: From: Andrei Emeltchenko Function adds audio_open_output_stream() and sets dummy callbacks. --- android/hal-sco.c | 178 +++++++++++++++++++++++++++++++++++++++++++++++++++++- 1 file changed, 176 insertions(+), 2 deletions(-) diff --git a/android/hal-sco.c b/android/hal-sco.c index 8f8c3b6..06e39ed 100644 --- a/android/hal-sco.c +++ b/android/hal-sco.c @@ -26,21 +26,195 @@ #include "hal-log.h" +#define AUDIO_STREAM_DEFAULT_RATE 44100 +#define AUDIO_STREAM_DEFAULT_FORMAT AUDIO_FORMAT_PCM_16_BIT + +#define OUT_BUFFER_SIZE 2560 + +struct sco_audio_config { + uint32_t rate; + uint32_t channels; + audio_format_t format; +}; + +struct sco_stream_out { + struct audio_stream_out stream; + struct sco_audio_config cfg; +}; + struct sco_dev { struct audio_hw_device dev; + struct sco_stream_out *out; }; +/* Audio stream functions */ + +static ssize_t out_write(struct audio_stream_out *stream, const void *buffer, + size_t bytes) +{ + /* write data */ + + return bytes; +} + +static uint32_t out_get_sample_rate(const struct audio_stream *stream) +{ + struct sco_stream_out *out = (struct sco_stream_out *) stream; + + DBG("rate %u", out->cfg.rate); + + return out->cfg.rate; +} + +static int out_set_sample_rate(struct audio_stream *stream, uint32_t rate) +{ + DBG("rate %u", rate); + + return 0; +} + +static size_t out_get_buffer_size(const struct audio_stream *stream) +{ + DBG("buf size %u", OUT_BUFFER_SIZE); + + return OUT_BUFFER_SIZE; +} + +static uint32_t out_get_channels(const struct audio_stream *stream) +{ + DBG(""); + + /* AudioFlinger can only provide stereo stream, so we return it here and + * later we'll downmix this to mono in case codec requires it + */ + return AUDIO_CHANNEL_OUT_STEREO; +} + +static audio_format_t out_get_format(const struct audio_stream *stream) +{ + struct sco_stream_out *out = (struct sco_stream_out *) stream; + + DBG(""); + + return out->cfg.format; +} + +static int out_set_format(struct audio_stream *stream, audio_format_t format) +{ + DBG(""); + + return -ENOSYS; +} + +static int out_standby(struct audio_stream *stream) +{ + DBG(""); + + return 0; +} + +static int out_dump(const struct audio_stream *stream, int fd) +{ + DBG(""); + + return -ENOSYS; +} + +static int out_set_parameters(struct audio_stream *stream, const char *kvpairs) +{ + DBG("%s", kvpairs); + + return 0; +} + +static char *out_get_parameters(const struct audio_stream *stream, + const char *keys) +{ + DBG(""); + + return strdup(""); +} + +static uint32_t out_get_latency(const struct audio_stream_out *stream) +{ + DBG(""); + + return 0; +} + +static int out_set_volume(struct audio_stream_out *stream, float left, + float right) +{ + DBG(""); + + return -ENOSYS; +} + +static int out_get_render_position(const struct audio_stream_out *stream, + uint32_t *dsp_frames) +{ + DBG(""); + + return -ENOSYS; +} + +static int out_add_audio_effect(const struct audio_stream *stream, + effect_handle_t effect) +{ + DBG(""); + + return -ENOSYS; +} + +static int out_remove_audio_effect(const struct audio_stream *stream, + effect_handle_t effect) +{ + DBG(""); + + return -ENOSYS; +} + static int sco_open_output_stream(struct audio_hw_device *dev, audio_io_handle_t handle, audio_devices_t devices, audio_output_flags_t flags, struct audio_config *config, struct audio_stream_out **stream_out) - { + struct sco_dev *adev = (struct sco_dev *) dev; + struct sco_stream_out *out; + DBG(""); - return -EINVAL; + out = calloc(1, sizeof(struct sco_stream_out)); + if (!out) + return -ENOMEM; + + out->stream.common.get_sample_rate = out_get_sample_rate; + out->stream.common.set_sample_rate = out_set_sample_rate; + out->stream.common.get_buffer_size = out_get_buffer_size; + out->stream.common.get_channels = out_get_channels; + out->stream.common.get_format = out_get_format; + out->stream.common.set_format = out_set_format; + out->stream.common.standby = out_standby; + out->stream.common.dump = out_dump; + out->stream.common.set_parameters = out_set_parameters; + out->stream.common.get_parameters = out_get_parameters; + out->stream.common.add_audio_effect = out_add_audio_effect; + out->stream.common.remove_audio_effect = out_remove_audio_effect; + out->stream.get_latency = out_get_latency; + out->stream.set_volume = out_set_volume; + out->stream.write = out_write; + out->stream.get_render_position = out_get_render_position; + + out->cfg.format = AUDIO_STREAM_DEFAULT_FORMAT; + out->cfg.channels = AUDIO_CHANNEL_OUT_MONO; + out->cfg.rate = AUDIO_STREAM_DEFAULT_RATE; + + *stream_out = &out->stream; + adev->out = out; + + return 0; } static void sco_close_output_stream(struct audio_hw_device *dev, -- 1.8.3.2