/* Spi ALSA Sink * Copyright (C) 2016 Wim Taymans * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Library General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Library General Public License for more details. * * You should have received a copy of the GNU Library General Public * License along with this library; if not, write to the * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, * Boston, MA 02110-1301, USA. */ #include #include #include #include "spi-plugins.h" typedef struct _SpiALSASink SpiALSASink; static const char default_device[] = "default"; static const uint32_t default_buffer_time = 500000; static const uint32_t default_period_time = 100000; static const bool default_period_event = 0; typedef struct { SpiParams param; char device[64]; char device_name[128]; char card_name[128]; uint32_t buffer_time; uint32_t period_time; bool period_event; } SpiALSASinkParams; static void reset_alsa_sink_params (SpiALSASinkParams *params) { strncpy (params->device, default_device, 64); params->buffer_time = default_buffer_time; params->period_time = default_period_time; params->period_event = default_period_event; } typedef struct { SpiParams param; char media_type[32]; uint32_t unset_mask; char format[16]; uint32_t layout; uint32_t samplerate; uint32_t channels; uint32_t position[16]; uint32_t mpegversion; uint32_t mpegaudioversion; bool parsed; } SpiALSASinkFormat; typedef struct { snd_pcm_t *handle; snd_output_t *output; snd_pcm_sframes_t buffer_size; snd_pcm_sframes_t period_size; snd_pcm_channel_area_t areas[16]; pthread_t thread; bool running; } SpiALSAState; typedef struct _ALSABuffer ALSABuffer; struct _ALSABuffer { SpiBuffer buffer; SpiMeta meta[1]; SpiMetaHeader header; SpiData data[1]; ALSABuffer *next; }; struct _SpiALSASink { SpiNode node; SpiALSASinkParams params; bool activated; SpiEvent *event; SpiEvent last_event; SpiEventCallback event_cb; void *user_data; int have_format; SpiALSASinkFormat current_format; SpiALSAState state; SpiBuffer *input_buffer; ALSABuffer buffer; }; #include "alsa-utils.c" static const uint32_t default_samplerate = 44100; static const uint32_t min_samplerate = 1; static const uint32_t max_samplerate = UINT32_MAX; static const SpiParamRangeInfo int32_range[] = { { "min", "Minimum value", 4, &min_samplerate }, { "max", "Maximum value", 4, &max_samplerate }, { NULL, NULL, 0, NULL } }; enum { PARAM_ID_DEVICE, PARAM_ID_DEVICE_NAME, PARAM_ID_CARD_NAME, PARAM_ID_BUFFER_TIME, PARAM_ID_PERIOD_TIME, PARAM_ID_PERIOD_EVENT, PARAM_ID_LAST, }; static const SpiParamInfo param_info[] = { { PARAM_ID_DEVICE, "device", "ALSA device, as defined in an asound configuration file", SPI_PARAM_FLAG_READWRITE, SPI_PARAM_TYPE_STRING, 63, strlen (default_device)+1, default_device, SPI_PARAM_RANGE_TYPE_NONE, NULL, NULL, NULL }, { PARAM_ID_DEVICE_NAME, "device-name", "Human-readable name of the sound device", SPI_PARAM_FLAG_READABLE, SPI_PARAM_TYPE_STRING, 127, 0, NULL, SPI_PARAM_RANGE_TYPE_NONE, NULL, NULL, NULL }, { PARAM_ID_CARD_NAME, "card-name", "Human-readable name of the sound card", SPI_PARAM_FLAG_READABLE, SPI_PARAM_TYPE_STRING, 127, 0, NULL, SPI_PARAM_RANGE_TYPE_NONE, NULL, NULL, NULL }, { PARAM_ID_BUFFER_TIME, "buffer-time", "The total size of the buffer in time", SPI_PARAM_FLAG_READWRITE, SPI_PARAM_TYPE_UINT32, sizeof (uint32_t), sizeof (uint32_t), &default_buffer_time, SPI_PARAM_RANGE_TYPE_MIN_MAX, int32_range, NULL, NULL }, { PARAM_ID_PERIOD_TIME, "period-time", "The size of a period in time", SPI_PARAM_FLAG_READWRITE, SPI_PARAM_TYPE_UINT32, sizeof (uint32_t), sizeof (uint32_t), &default_period_time, SPI_PARAM_RANGE_TYPE_MIN_MAX, int32_range, NULL, NULL }, { PARAM_ID_PERIOD_EVENT, "period-event", "Generate an event each period", SPI_PARAM_FLAG_READWRITE, SPI_PARAM_TYPE_BOOL, sizeof (bool), sizeof (bool), &default_period_event, SPI_PARAM_RANGE_TYPE_NONE, NULL, NULL, NULL }, }; #define CHECK_TYPE(type,expected) if (type != expected) return SPI_RESULT_WRONG_PARAM_TYPE; #define CHECK_SIZE(size,expected) if (size != expected) return SPI_RESULT_WRONG_PARAM_SIZE; #define CHECK_SIZE_RANGE(size,minsize,maxsize) if (size > maxsize || size < minsize) return SPI_RESULT_WRONG_PARAM_SIZE; #define CHECK_SIZE_MAX(size,maxsize) if (size > maxsize) return SPI_RESULT_WRONG_PARAM_SIZE; #define CHECK_UNSET(mask,index) if (mask & (1 << index)) return SPI_RESULT_PARAM_UNSET; static SpiResult enum_param_info (const SpiParams *params, unsigned int index, const SpiParamInfo **info) { if (index >= PARAM_ID_LAST) return SPI_RESULT_ENUM_END; *info = ¶m_info[index]; return SPI_RESULT_OK; } static SpiResult set_param (SpiParams *params, uint32_t id, SpiParamType type, size_t size, const void *value) { SpiResult res = SPI_RESULT_OK; SpiALSASinkParams *p = (SpiALSASinkParams *) params; switch (id) { case PARAM_ID_DEVICE: CHECK_TYPE (type, SPI_PARAM_TYPE_STRING); CHECK_SIZE_MAX (size, 64); strncpy (p->device, value, 64); break; case PARAM_ID_BUFFER_TIME: CHECK_TYPE (type, SPI_PARAM_TYPE_UINT32); CHECK_SIZE (size, sizeof (uint32_t)); memcpy (&p->buffer_time, value, size); break; case PARAM_ID_PERIOD_TIME: CHECK_TYPE (type, SPI_PARAM_TYPE_UINT32); CHECK_SIZE (size, sizeof (uint32_t)); memcpy (&p->period_time, value, size); break; case PARAM_ID_PERIOD_EVENT: CHECK_TYPE (type, SPI_PARAM_TYPE_BOOL); CHECK_SIZE (size, sizeof (uint32_t)); memcpy (&p->period_event, value, size); break; default: res = SPI_RESULT_INVALID_PARAM_ID; break; } return res; } static SpiResult get_param (const SpiParams *params, uint32_t id, SpiParamType *type, size_t *size, const void **value) { SpiResult res = SPI_RESULT_OK; SpiALSASinkParams *p = (SpiALSASinkParams *) params; switch (id) { case PARAM_ID_DEVICE: *type = SPI_PARAM_TYPE_STRING; *value = p->device; *size = strlen (p->device)+1; break; case PARAM_ID_DEVICE_NAME: *type = SPI_PARAM_TYPE_STRING; *value = p->device_name; *size = strlen (p->device_name)+1; break; case PARAM_ID_CARD_NAME: *type = SPI_PARAM_TYPE_STRING; *value = p->card_name; *size = strlen (p->card_name)+1; break; case PARAM_ID_BUFFER_TIME: *type = SPI_PARAM_TYPE_UINT32; *value = &p->buffer_time; *size = sizeof (uint32_t); break; case PARAM_ID_PERIOD_TIME: *type = SPI_PARAM_TYPE_UINT32; *value = &p->period_time; *size = sizeof (uint32_t); break; case PARAM_ID_PERIOD_EVENT: *type = SPI_PARAM_TYPE_BOOL; *value = &p->period_event; *size = sizeof (bool); break; default: res = SPI_RESULT_INVALID_PARAM_ID; break; } return res; } static SpiResult spi_alsa_sink_node_get_params (SpiNode *node, SpiParams **params) { static SpiALSASinkParams p; SpiALSASink *this = (SpiALSASink *) node; memcpy (&p, &this->params, sizeof (p)); *params = &p.param; return SPI_RESULT_OK; } static SpiResult spi_alsa_sink_node_set_params (SpiNode *node, const SpiParams *params) { SpiALSASink *this = (SpiALSASink *) node; SpiALSASinkParams *p = &this->params; SpiParamType type; size_t size; const void *value; if (params == NULL) { reset_alsa_sink_params (p); return SPI_RESULT_OK; } if (params->get_param (params, PARAM_ID_DEVICE, &type, &size, &value) == 0) { CHECK_TYPE (type, SPI_PARAM_TYPE_STRING); CHECK_SIZE_MAX (size, 64); strncpy (p->device, value, 64); } if (params->get_param (params, PARAM_ID_BUFFER_TIME, &type, &size, &value) == 0) { CHECK_TYPE (type, SPI_PARAM_TYPE_UINT32); CHECK_SIZE (size, sizeof (uint32_t)); memcpy (&p->buffer_time, value, size); } if (params->get_param (params, PARAM_ID_PERIOD_TIME, &type, &size, &value) == 0) { CHECK_TYPE (type, SPI_PARAM_TYPE_UINT32); CHECK_SIZE (size, sizeof (uint32_t)); memcpy (&p->period_time, value, size); } if (params->get_param (params, PARAM_ID_PERIOD_EVENT, &type, &size, &value) == 0) { CHECK_TYPE (type, SPI_PARAM_TYPE_BOOL); CHECK_SIZE (size, sizeof (bool)); memcpy (&p->period_event, value, size); } return SPI_RESULT_OK; } static SpiResult spi_alsa_sink_node_send_command (SpiNode *node, SpiCommand *command) { SpiALSASink *this = (SpiALSASink *) node; SpiResult res = SPI_RESULT_NOT_IMPLEMENTED; switch (command->type) { case SPI_COMMAND_INVALID: res = SPI_RESULT_INVALID_COMMAND; break; case SPI_COMMAND_ACTIVATE: if (!this->activated) { spi_alsa_open (this); this->activated = true; } this->last_event.type = SPI_EVENT_TYPE_ACTIVATED; this->last_event.data = NULL; this->last_event.size = 0; this->event = &this->last_event; res = SPI_RESULT_HAVE_EVENT; break; case SPI_COMMAND_DEACTIVATE: if (this->activated) { spi_alsa_close (this); this->activated = false; } this->last_event.type = SPI_EVENT_TYPE_DEACTIVATED; this->last_event.data = NULL; this->last_event.size = 0; this->event = &this->last_event; res = SPI_RESULT_HAVE_EVENT; break; case SPI_COMMAND_START: spi_alsa_start (this); res = SPI_RESULT_OK; break; case SPI_COMMAND_STOP: spi_alsa_stop (this); res = SPI_RESULT_OK; break; case SPI_COMMAND_FLUSH: break; case SPI_COMMAND_DRAIN: break; case SPI_COMMAND_MARKER: break; } return res; } static SpiResult spi_alsa_sink_node_get_event (SpiNode *node, SpiEvent **event) { SpiALSASink *this = (SpiALSASink *) node; if (this->event == NULL) return SPI_RESULT_ERROR; *event = this->event; this->event = NULL; return SPI_RESULT_OK; } static SpiResult spi_alsa_sink_node_set_event_callback (SpiNode *node, SpiEventCallback event, void *user_data) { SpiALSASink *this = (SpiALSASink *) node; this->event_cb = event; this->user_data = user_data; return SPI_RESULT_OK; } static SpiResult spi_alsa_sink_node_get_n_ports (SpiNode *node, unsigned int *n_input_ports, unsigned int *max_input_ports, unsigned int *n_output_ports, unsigned int *max_output_ports) { *n_input_ports = 1; *n_output_ports = 0; *max_input_ports = 1; *max_output_ports = 0; return SPI_RESULT_OK; } static SpiResult spi_alsa_sink_node_get_port_ids (SpiNode *node, unsigned int n_input_ports, uint32_t *input_ids, unsigned int n_output_ports, uint32_t *output_ids) { if (n_input_ports > 0) input_ids[0] = 0; return SPI_RESULT_OK; } static SpiResult spi_alsa_sink_node_add_port (SpiNode *node, SpiDirection direction, uint32_t *port_id) { return SPI_RESULT_NOT_IMPLEMENTED; } static SpiResult spi_alsa_sink_node_remove_port (SpiNode *node, uint32_t port_id) { return SPI_RESULT_NOT_IMPLEMENTED; } static const SpiParamRangeInfo format_format_range[] = { { "S8", "S8", 2, "S8" }, { "U8", "U8", 2, "U8" }, { "S16LE", "S16LE", 5, "S16LE" }, { "S16BE", "S16BE", 5, "S16BE" }, { "U16LE", "U16LE", 5, "U16LE" }, { "U16BE", "U16BE", 5, "U16BE" }, { "S24_32LE", "S24_32LE", 8, "S24_32LE" }, { "S24_32BE", "S24_32BE", 8, "S24_32BE" }, { "U24_32LE", "U24_32LE", 8, "U24_32LE" }, { "U24_32BE", "U24_32BE", 8, "U24_32BE" }, { "S32LE", "S32LE", 5, "S32LE" }, { "S32BE", "S32BE", 5, "S32BE" }, { "U32LE", "U32LE", 5, "U32LE" }, { "U32BE", "U32BE", 5, "U32BE" }, { "S24LE", "S24LE", 5, "S24LE" }, { "S24BE", "S24BE", 5, "S24BE" }, { "U24LE", "U24LE", 5, "U24LE" }, { "U24BE", "U24BE", 5, "U24BE" }, { "S20LE", "S20LE", 5, "S20LE" }, { "S20BE", "S20BE", 5, "S20BE" }, { "U20LE", "U20LE", 5, "U20LE" }, { "U20BE", "U20BE", 5, "U20BE" }, { "S18LE", "S18LE", 5, "S18LE" }, { "S18BE", "S18BE", 5, "S18BE" }, { "U18LE", "U18LE", 5, "U18LE" }, { "U18BE", "U18BE", 5, "U18BE" }, { "F32LE", "F32LE", 5, "F32LE" }, { "F32BE", "F32BE", 5, "F32BE" }, { "F64LE", "F64LE", 5, "F64LE" }, { "F64BE", "F64BE", 5, "F64BE" }, { NULL, NULL, 0, NULL } }; enum { SPI_PARAM_ID_MEDIA_TYPE, SPI_PARAM_ID_FORMAT, SPI_PARAM_ID_LAYOUT, SPI_PARAM_ID_SAMPLERATE, SPI_PARAM_ID_CHANNELS, SPI_PARAM_ID_MPEG_VERSION, SPI_PARAM_ID_MPEG_AUDIO_VERSION, SPI_PARAM_ID_PARSED, }; static const int32_t format_default_layout = 1; static const SpiParamInfo raw_format_param_info[] = { { SPI_PARAM_ID_MEDIA_TYPE, "media-type", "The media type", SPI_PARAM_FLAG_READABLE, SPI_PARAM_TYPE_STRING, 32, strlen ("audio/x-raw")+1, "audio/x-raw", SPI_PARAM_RANGE_TYPE_NONE, NULL, NULL, NULL }, { SPI_PARAM_ID_FORMAT, "format", "The media format", SPI_PARAM_FLAG_READWRITE, SPI_PARAM_TYPE_STRING, 16, 0, NULL, SPI_PARAM_RANGE_TYPE_ENUM, format_format_range, NULL, NULL }, { SPI_PARAM_ID_LAYOUT, "layout", "Sample Layout", SPI_PARAM_FLAG_READABLE, SPI_PARAM_TYPE_UINT32, sizeof (uint32_t), sizeof (uint32_t), &format_default_layout, SPI_PARAM_RANGE_TYPE_NONE, NULL, NULL, NULL }, { SPI_PARAM_ID_SAMPLERATE, "rate", "Audio sample rate", SPI_PARAM_FLAG_READWRITE, SPI_PARAM_TYPE_UINT32, sizeof (uint32_t), 0, NULL, SPI_PARAM_RANGE_TYPE_MIN_MAX, int32_range, NULL, NULL }, { SPI_PARAM_ID_CHANNELS, "channels", "Audio channels", SPI_PARAM_FLAG_READWRITE, SPI_PARAM_TYPE_UINT32, sizeof (uint32_t), 0, NULL, SPI_PARAM_RANGE_TYPE_MIN_MAX, int32_range, NULL, NULL }, }; static SpiResult enum_raw_format_param_info (const SpiParams *params, unsigned int index, const SpiParamInfo **info) { if (index >= 5) return SPI_RESULT_ENUM_END; *info = &raw_format_param_info[index]; return SPI_RESULT_OK; } static const uint32_t default_mpeg_version = 1; static const uint32_t min_mpeg_audio_version = 1; static const uint32_t max_mpeg_audio_version = 2; static const bool default_parsed = 1; static const SpiParamRangeInfo mpeg_audio_version_range[] = { { "min", "Minimum value", 4, &min_mpeg_audio_version }, { "max", "Maximum value", 4, &max_mpeg_audio_version }, { NULL, NULL, 0, NULL } }; static const SpiParamInfo mpeg_format_param_info[] = { { SPI_PARAM_ID_MEDIA_TYPE, "media-type", "The media type", SPI_PARAM_FLAG_READABLE, SPI_PARAM_TYPE_STRING, 32, strlen ("audio/mpeg")+1, "audio/mpeg", SPI_PARAM_RANGE_TYPE_NONE, NULL, NULL, NULL }, { SPI_PARAM_ID_MPEG_VERSION, "mpegversion", "The MPEG version", SPI_PARAM_FLAG_READABLE, SPI_PARAM_TYPE_UINT32, sizeof (uint32_t), sizeof (uint32_t), &default_mpeg_version, SPI_PARAM_RANGE_TYPE_NONE, NULL, NULL, NULL }, { SPI_PARAM_ID_MPEG_AUDIO_VERSION, "mpegaudioversion", "The MPEG audio version", SPI_PARAM_FLAG_READWRITE, SPI_PARAM_TYPE_UINT32, sizeof (uint32_t), 0, NULL, SPI_PARAM_RANGE_TYPE_MIN_MAX, mpeg_audio_version_range, NULL, NULL }, { SPI_PARAM_ID_PARSED, "parsed", "Parsed input", SPI_PARAM_FLAG_READABLE, SPI_PARAM_TYPE_BOOL, sizeof (bool), sizeof (bool), &default_parsed, SPI_PARAM_RANGE_TYPE_NONE, NULL, NULL, NULL }, }; static SpiResult enum_mpeg_format_param_info (const SpiParams *params, unsigned int index, const SpiParamInfo **info) { if (index >= 4) return SPI_RESULT_ENUM_END; *info = &mpeg_format_param_info[index]; return SPI_RESULT_OK; } #define CHECK_TYPE(type,expected) if (type != expected) return SPI_RESULT_WRONG_PARAM_TYPE; #define MARK_SET(mask,index) (mask &= ~(1 << index)) static SpiResult set_format_param (SpiParams *params, uint32_t id, SpiParamType type, size_t size, const void *value) { SpiALSASinkFormat *f = (SpiALSASinkFormat *) params; switch (id) { case SPI_PARAM_ID_FORMAT: CHECK_TYPE (type, SPI_PARAM_TYPE_STRING); CHECK_SIZE_MAX (size, 16); strncpy (f->format, value, 16); MARK_SET (f->unset_mask, 1); break; case SPI_PARAM_ID_LAYOUT: CHECK_TYPE (type, SPI_PARAM_TYPE_UINT32); CHECK_SIZE (size, sizeof (uint32_t)); memcpy (&f->layout, value, size); MARK_SET (f->unset_mask, 2); break; case SPI_PARAM_ID_SAMPLERATE: CHECK_TYPE (type, SPI_PARAM_TYPE_UINT32); CHECK_SIZE (size, sizeof (uint32_t)); memcpy (&f->samplerate, value, size); MARK_SET (f->unset_mask, 3); break; case SPI_PARAM_ID_CHANNELS: CHECK_TYPE (type, SPI_PARAM_TYPE_UINT32); CHECK_SIZE (size, sizeof (uint32_t)); memcpy (&f->channels, value, size); MARK_SET (f->unset_mask, 4); break; case SPI_PARAM_ID_MPEG_AUDIO_VERSION: CHECK_TYPE (type, SPI_PARAM_TYPE_UINT32); CHECK_SIZE (size, sizeof (uint32_t)); memcpy (&f->mpegaudioversion, value, size); MARK_SET (f->unset_mask, 6); break; default: return SPI_RESULT_INVALID_PARAM_ID; } return SPI_RESULT_OK; } static SpiResult get_format_param (const SpiParams *params, uint32_t id, SpiParamType *type, size_t *size, const void **value) { SpiALSASinkFormat *f = (SpiALSASinkFormat *) params; switch (id) { case SPI_PARAM_ID_MEDIA_TYPE: CHECK_UNSET (f->unset_mask, 0); *type = SPI_PARAM_TYPE_STRING; *value = f->media_type; *size = strlen (f->media_type)+1; break; case SPI_PARAM_ID_FORMAT: CHECK_UNSET (f->unset_mask, 1); *type = SPI_PARAM_TYPE_STRING; *value = f->format; *size = strlen (f->format)+1; break; case SPI_PARAM_ID_LAYOUT: CHECK_UNSET (f->unset_mask, 2); *type = SPI_PARAM_TYPE_UINT32; *value = &f->layout; *size = sizeof (uint32_t); break; case SPI_PARAM_ID_SAMPLERATE: CHECK_UNSET (f->unset_mask, 3); *type = SPI_PARAM_TYPE_UINT32; *value = &f->samplerate; *size = sizeof (uint32_t); break; case SPI_PARAM_ID_CHANNELS: CHECK_UNSET (f->unset_mask, 4); *type = SPI_PARAM_TYPE_UINT32; *value = &f->channels; *size = sizeof (uint32_t); break; case SPI_PARAM_ID_MPEG_VERSION: CHECK_UNSET (f->unset_mask, 5); *type = SPI_PARAM_TYPE_UINT32; *value = &f->mpegversion; *size = sizeof (uint32_t); break; case SPI_PARAM_ID_MPEG_AUDIO_VERSION: CHECK_UNSET (f->unset_mask, 6); *type = SPI_PARAM_TYPE_UINT32; *value = &f->mpegaudioversion; *size = sizeof (uint32_t); break; case SPI_PARAM_ID_PARSED: CHECK_UNSET (f->unset_mask, 7); *type = SPI_PARAM_TYPE_BOOL; *value = &f->parsed; *size = sizeof (bool); break; default: return SPI_RESULT_INVALID_PARAM_ID; } return SPI_RESULT_OK; } static SpiResult spi_alsa_sink_node_enum_port_formats (SpiNode *node, uint32_t port_id, unsigned int index, SpiParams **format) { static SpiALSASinkFormat fmt; if (port_id != 0) return SPI_RESULT_INVALID_PORT; switch (index) { case 0: strcpy (fmt.media_type, "audio/x-raw"); fmt.unset_mask = (1 << 1) | (1 << 2) | (1 << 3) | (1 << 4); fmt.param.enum_param_info = enum_raw_format_param_info; fmt.param.set_param = set_format_param; fmt.param.get_param = get_format_param; break; case 1: strcpy (fmt.media_type, "audio/mpeg"); fmt.mpegversion = 1; fmt.parsed = 1; fmt.unset_mask = (1 << 6); fmt.param.enum_param_info = enum_mpeg_format_param_info; fmt.param.set_param = set_format_param; fmt.param.get_param = get_format_param; break; default: return SPI_RESULT_ENUM_END; } *format = &fmt.param; return SPI_RESULT_OK; } static SpiResult spi_alsa_sink_node_set_port_format (SpiNode *node, uint32_t port_id, int test_only, const SpiParams *format) { SpiALSASink *this = (SpiALSASink *) node; SpiParamType type; size_t size; const void *value; SpiALSASinkFormat *fmt = &this->current_format; if (port_id != 0) return SPI_RESULT_INVALID_PORT; if (format == NULL) { fmt->param.get_param = NULL; this->have_format = 0; return SPI_RESULT_OK; } if (format->get_param (format, SPI_PARAM_ID_MEDIA_TYPE, &type, &size, &value) < 0) return SPI_RESULT_INVALID_MEDIA_TYPE; CHECK_TYPE (type, SPI_PARAM_TYPE_STRING); CHECK_SIZE_MAX (size, 32); strncpy (fmt->media_type, value, 32); if (format->get_param (format, SPI_PARAM_ID_FORMAT, &type, &size, &value) < 0) return SPI_RESULT_INVALID_FORMAT_PARAMS; CHECK_TYPE (type, SPI_PARAM_TYPE_STRING); CHECK_SIZE_MAX (size, 16); strncpy (fmt->format, value, 16); if (format->get_param (format, SPI_PARAM_ID_LAYOUT, &type, &size, &value) < 0) return SPI_RESULT_INVALID_FORMAT_PARAMS; CHECK_TYPE (type, SPI_PARAM_TYPE_UINT32); CHECK_SIZE (size, sizeof (uint32_t)); memcpy (&fmt->layout, value, size); if (format->get_param (format, SPI_PARAM_ID_SAMPLERATE, &type, &size, &value) < 0) return SPI_RESULT_INVALID_FORMAT_PARAMS; CHECK_TYPE (type, SPI_PARAM_TYPE_UINT32); CHECK_SIZE (size, sizeof (uint32_t)); memcpy (&fmt->samplerate, value, size); if (format->get_param (format, SPI_PARAM_ID_CHANNELS, &type, &size, &value) < 0) return SPI_RESULT_INVALID_FORMAT_PARAMS; CHECK_TYPE (type, SPI_PARAM_TYPE_UINT32); CHECK_SIZE (size, sizeof (uint32_t)); memcpy (&fmt->channels, value, size); fmt->param.enum_param_info = enum_raw_format_param_info; fmt->param.set_param = NULL; fmt->param.get_param = get_format_param; this->have_format = 1; return SPI_RESULT_OK; } static SpiResult spi_alsa_sink_node_get_port_format (SpiNode *node, uint32_t port_id, const SpiParams **format) { SpiALSASink *this = (SpiALSASink *) node; if (port_id != 0) return SPI_RESULT_INVALID_PORT; if (!this->have_format) return SPI_RESULT_NO_FORMAT; *format = &this->current_format.param; return SPI_RESULT_OK; } static SpiResult spi_alsa_sink_node_get_port_info (SpiNode *node, uint32_t port_id, SpiPortInfo *info) { if (port_id != 0) return SPI_RESULT_INVALID_PORT; info->flags = SPI_PORT_INFO_FLAG_NONE; return SPI_RESULT_OK; } static SpiResult spi_alsa_sink_node_get_port_params (SpiNode *node, uint32_t port_id, SpiParams **params) { return SPI_RESULT_NOT_IMPLEMENTED; } static SpiResult spi_alsa_sink_node_set_port_params (SpiNode *node, uint32_t port_id, const SpiParams *params) { return SPI_RESULT_NOT_IMPLEMENTED; } static SpiResult spi_alsa_sink_node_get_port_status (SpiNode *node, uint32_t port_id, SpiPortStatus *status) { if (port_id != 0) return SPI_RESULT_INVALID_PORT; status->flags = SPI_PORT_STATUS_FLAG_NEED_INPUT; return SPI_RESULT_OK; } static SpiResult spi_alsa_sink_node_send_port_data (SpiNode *node, SpiDataInfo *data) { SpiALSASink *this = (SpiALSASink *) node; if (data->port_id != 0) return SPI_RESULT_INVALID_PORT; if (data->buffer != NULL) { if (!this->have_format) return SPI_RESULT_NO_FORMAT; if (this->input_buffer != NULL) return SPI_RESULT_HAVE_ENOUGH_INPUT; this->input_buffer = spi_buffer_ref (data->buffer); } return SPI_RESULT_OK; } static SpiResult spi_alsa_sink_node_receive_port_data (SpiNode *node, unsigned int n_data, SpiDataInfo *data) { return SPI_RESULT_INVALID_PORT; } SpiNode * spi_alsa_sink_new (void) { SpiNode *node; SpiALSASink *this; node = calloc (1, sizeof (SpiALSASink)); node->get_params = spi_alsa_sink_node_get_params; node->set_params = spi_alsa_sink_node_set_params; node->send_command = spi_alsa_sink_node_send_command; node->get_event = spi_alsa_sink_node_get_event; node->set_event_callback = spi_alsa_sink_node_set_event_callback; node->get_n_ports = spi_alsa_sink_node_get_n_ports; node->get_port_ids = spi_alsa_sink_node_get_port_ids; node->add_port = spi_alsa_sink_node_add_port; node->remove_port = spi_alsa_sink_node_remove_port; node->enum_port_formats = spi_alsa_sink_node_enum_port_formats; node->set_port_format = spi_alsa_sink_node_set_port_format; node->get_port_format = spi_alsa_sink_node_get_port_format; node->get_port_info = spi_alsa_sink_node_get_port_info; node->get_port_params = spi_alsa_sink_node_get_port_params; node->set_port_params = spi_alsa_sink_node_set_port_params; node->get_port_status = spi_alsa_sink_node_get_port_status; node->send_port_data = spi_alsa_sink_node_send_port_data; node->receive_port_data = spi_alsa_sink_node_receive_port_data; this = (SpiALSASink *) node; this->params.param.enum_param_info = enum_param_info; this->params.param.set_param = set_param; this->params.param.get_param = get_param; reset_alsa_sink_params (&this->params); return node; }