mirror of
https://gitlab.freedesktop.org/pipewire/pipewire.git
synced 2025-10-29 05:40:27 -04:00
05829f33e6
We now only allow per port preallocated buffers. We exchange the index into the array instead of passing the buffers around. We still use the refcount to track when a buffer can be reused. Improve API a little, allow passing the node as the first argument of the interface call. Implement alloc_buffer in v4l2 and improve the test.
681 lines
19 KiB
C
681 lines
19 KiB
C
/* Spa ALSA Sink
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* Copyright (C) 2016 Wim Taymans <wim.taymans@gmail.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#include <stddef.h>
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#include <asoundlib.h>
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#include <spa/node.h>
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#include <spa/audio/format.h>
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typedef struct _SpaALSASink SpaALSASink;
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static const char default_device[] = "default";
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static const uint32_t default_buffer_time = 10000;
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static const uint32_t default_period_time = 5000;
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static const bool default_period_event = 0;
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typedef struct {
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SpaProps props;
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char device[64];
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char device_name[128];
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char card_name[128];
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uint32_t buffer_time;
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uint32_t period_time;
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bool period_event;
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} SpaALSASinkProps;
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static void
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reset_alsa_sink_props (SpaALSASinkProps *props)
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{
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strncpy (props->device, default_device, 64);
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props->buffer_time = default_buffer_time;
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props->period_time = default_period_time;
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props->period_event = default_period_event;
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}
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typedef struct {
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bool opened;
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snd_pcm_t *handle;
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snd_output_t *output;
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snd_pcm_sframes_t buffer_size;
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snd_pcm_sframes_t period_size;
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snd_pcm_channel_area_t areas[16];
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bool running;
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SpaPollFd fds[16];
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SpaPollItem poll;
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} SpaALSAState;
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typedef struct _ALSABuffer ALSABuffer;
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struct _ALSABuffer {
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SpaBuffer buffer;
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SpaMeta meta[1];
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SpaMetaHeader header;
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SpaData data[1];
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};
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struct _SpaALSASink {
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SpaHandle handle;
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SpaNode node;
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SpaALSASinkProps props[2];
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SpaEventCallback event_cb;
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void *user_data;
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bool have_format;
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SpaAudioRawFormat query_format;
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SpaAudioRawFormat current_format;
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SpaALSAState state;
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SpaPortInfo info;
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SpaPortStatus status;
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SpaBuffer *input_buffer;
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ALSABuffer buffer;
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};
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#include "alsa-utils.c"
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static const uint32_t min_uint32 = 1;
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static const uint32_t max_uint32 = UINT32_MAX;
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static const SpaPropRangeInfo uint32_range[] = {
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{ "min", "Minimum value", 4, &min_uint32 },
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{ "max", "Maximum value", 4, &max_uint32 },
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};
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enum {
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PROP_ID_DEVICE,
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PROP_ID_DEVICE_NAME,
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PROP_ID_CARD_NAME,
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PROP_ID_BUFFER_TIME,
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PROP_ID_PERIOD_TIME,
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PROP_ID_PERIOD_EVENT,
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PROP_ID_LAST,
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};
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static const SpaPropInfo prop_info[] =
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{
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{ PROP_ID_DEVICE, "device", "ALSA device, as defined in an asound configuration file",
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SPA_PROP_FLAG_READWRITE,
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SPA_PROP_TYPE_STRING, 63,
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strlen (default_device)+1, default_device,
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SPA_PROP_RANGE_TYPE_NONE, 0, NULL,
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NULL,
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offsetof (SpaALSASinkProps, device),
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0, 0,
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NULL },
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{ PROP_ID_DEVICE_NAME, "device-name", "Human-readable name of the sound device",
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SPA_PROP_FLAG_READABLE,
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SPA_PROP_TYPE_STRING, 127,
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0, NULL,
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SPA_PROP_RANGE_TYPE_NONE, 0, NULL,
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NULL,
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offsetof (SpaALSASinkProps, device_name),
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0, 0,
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NULL },
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{ PROP_ID_CARD_NAME, "card-name", "Human-readable name of the sound card",
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SPA_PROP_FLAG_READABLE,
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SPA_PROP_TYPE_STRING, 127,
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0, NULL,
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SPA_PROP_RANGE_TYPE_NONE, 0, NULL,
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NULL,
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offsetof (SpaALSASinkProps, card_name),
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0, 0,
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NULL },
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{ PROP_ID_BUFFER_TIME, "buffer-time", "The total size of the buffer in time",
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SPA_PROP_FLAG_READWRITE,
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SPA_PROP_TYPE_UINT32, sizeof (uint32_t),
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sizeof (uint32_t), &default_buffer_time,
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SPA_PROP_RANGE_TYPE_MIN_MAX, 2, uint32_range,
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NULL,
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offsetof (SpaALSASinkProps, buffer_time),
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0, 0,
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NULL },
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{ PROP_ID_PERIOD_TIME, "period-time", "The size of a period in time",
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SPA_PROP_FLAG_READWRITE,
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SPA_PROP_TYPE_UINT32, sizeof (uint32_t),
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sizeof (uint32_t), &default_period_time,
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SPA_PROP_RANGE_TYPE_MIN_MAX, 2, uint32_range,
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NULL,
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offsetof (SpaALSASinkProps, period_time),
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0, 0,
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NULL },
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{ PROP_ID_PERIOD_EVENT, "period-event", "Generate an event each period",
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SPA_PROP_FLAG_READWRITE,
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SPA_PROP_TYPE_BOOL, sizeof (bool),
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sizeof (bool), &default_period_event,
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SPA_PROP_RANGE_TYPE_NONE, 0, NULL,
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NULL,
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offsetof (SpaALSASinkProps, period_event),
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0, 0,
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NULL },
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};
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static SpaResult
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spa_alsa_sink_node_get_props (SpaNode *node,
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SpaProps **props)
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{
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SpaALSASink *this;
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if (node == NULL || node->handle == NULL || props == NULL)
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return SPA_RESULT_INVALID_ARGUMENTS;
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this = (SpaALSASink *) node->handle;
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memcpy (&this->props[0], &this->props[1], sizeof (this->props[1]));
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*props = &this->props[0].props;
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return SPA_RESULT_OK;
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}
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static SpaResult
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spa_alsa_sink_node_set_props (SpaNode *node,
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const SpaProps *props)
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{
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SpaALSASink *this;
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SpaALSASinkProps *p;
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SpaResult res;
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if (node == NULL || node->handle == NULL)
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return SPA_RESULT_INVALID_ARGUMENTS;
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this = (SpaALSASink *) node->handle;
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p = &this->props[1];
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if (props == NULL) {
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reset_alsa_sink_props (p);
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return SPA_RESULT_OK;
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}
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res = spa_props_copy (props, &p->props);
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return res;
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}
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static SpaResult
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spa_alsa_sink_node_send_command (SpaNode *node,
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SpaCommand *command)
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{
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SpaALSASink *this;
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if (node == NULL || node->handle == NULL || command == NULL)
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return SPA_RESULT_INVALID_ARGUMENTS;
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this = (SpaALSASink *) node->handle;
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switch (command->type) {
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case SPA_COMMAND_INVALID:
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return SPA_RESULT_INVALID_COMMAND;
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case SPA_COMMAND_START:
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spa_alsa_start (this);
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if (this->event_cb) {
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SpaEvent event;
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event.refcount = 1;
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event.notify = NULL;
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event.type = SPA_EVENT_TYPE_STARTED;
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event.port_id = -1;
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event.data = NULL;
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event.size = 0;
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this->event_cb (node, &event, this->user_data);
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}
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break;
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case SPA_COMMAND_STOP:
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spa_alsa_stop (this);
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if (this->event_cb) {
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SpaEvent event;
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event.refcount = 1;
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event.notify = NULL;
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event.type = SPA_EVENT_TYPE_STOPPED;
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event.port_id = -1;
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event.data = NULL;
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event.size = 0;
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this->event_cb (node, &event, this->user_data);
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}
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break;
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case SPA_COMMAND_FLUSH:
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case SPA_COMMAND_DRAIN:
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case SPA_COMMAND_MARKER:
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return SPA_RESULT_NOT_IMPLEMENTED;
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}
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return SPA_RESULT_OK;
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}
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static SpaResult
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spa_alsa_sink_node_set_event_callback (SpaNode *node,
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SpaEventCallback event,
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void *user_data)
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{
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SpaALSASink *this;
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if (node == NULL || node->handle == NULL)
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return SPA_RESULT_INVALID_ARGUMENTS;
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this = (SpaALSASink *) node->handle;
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this->event_cb = event;
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this->user_data = user_data;
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return SPA_RESULT_OK;
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}
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static SpaResult
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spa_alsa_sink_node_get_n_ports (SpaNode *node,
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unsigned int *n_input_ports,
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unsigned int *max_input_ports,
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unsigned int *n_output_ports,
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unsigned int *max_output_ports)
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{
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if (node == NULL || node->handle == NULL)
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return SPA_RESULT_INVALID_ARGUMENTS;
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if (n_input_ports)
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*n_input_ports = 1;
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if (n_output_ports)
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*n_output_ports = 0;
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if (max_input_ports)
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*max_input_ports = 1;
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if (max_output_ports)
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*max_output_ports = 0;
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return SPA_RESULT_OK;
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}
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static SpaResult
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spa_alsa_sink_node_get_port_ids (SpaNode *node,
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unsigned int n_input_ports,
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uint32_t *input_ids,
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unsigned int n_output_ports,
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uint32_t *output_ids)
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{
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if (node == NULL || node->handle == NULL)
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return SPA_RESULT_INVALID_ARGUMENTS;
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if (n_input_ports > 0)
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input_ids[0] = 0;
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return SPA_RESULT_OK;
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}
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static SpaResult
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spa_alsa_sink_node_add_port (SpaNode *node,
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SpaDirection direction,
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uint32_t port_id)
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{
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return SPA_RESULT_NOT_IMPLEMENTED;
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}
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static SpaResult
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spa_alsa_sink_node_remove_port (SpaNode *node,
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uint32_t port_id)
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{
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return SPA_RESULT_NOT_IMPLEMENTED;
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}
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static SpaResult
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spa_alsa_sink_node_port_enum_formats (SpaNode *node,
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uint32_t port_id,
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SpaFormat **format,
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const SpaFormat *filter,
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void **state)
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{
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SpaALSASink *this;
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int index;
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if (node == NULL || node->handle == NULL || format == NULL || state == NULL)
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return SPA_RESULT_INVALID_ARGUMENTS;
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this = (SpaALSASink *) node->handle;
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if (port_id != 0)
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return SPA_RESULT_INVALID_PORT;
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index = (*state == NULL ? 0 : *(int*)state);
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switch (index) {
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case 0:
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spa_audio_raw_format_init (&this->query_format);
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break;
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case 1:
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spa_audio_raw_format_init (&this->query_format);
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break;
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default:
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return SPA_RESULT_ENUM_END;
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}
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*format = &this->query_format.format;
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*(int*)state = ++index;
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return SPA_RESULT_OK;
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}
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static SpaResult
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spa_alsa_sink_node_port_set_format (SpaNode *node,
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uint32_t port_id,
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SpaPortFormatFlags flags,
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const SpaFormat *format)
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{
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SpaALSASink *this;
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SpaResult res;
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if (node == NULL || node->handle == NULL || format == NULL)
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return SPA_RESULT_INVALID_ARGUMENTS;
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this = (SpaALSASink *) node->handle;
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if (port_id != 0)
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return SPA_RESULT_INVALID_PORT;
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if (format == NULL) {
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this->have_format = false;
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return SPA_RESULT_OK;
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}
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if ((res = spa_audio_raw_format_parse (format, &this->current_format)) < 0)
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return res;
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this->have_format = true;
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return SPA_RESULT_OK;
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}
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static SpaResult
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spa_alsa_sink_node_port_get_format (SpaNode *node,
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uint32_t port_id,
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const SpaFormat **format)
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{
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SpaALSASink *this;
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if (node == NULL || node->handle == NULL || format == NULL)
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return SPA_RESULT_INVALID_ARGUMENTS;
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this = (SpaALSASink *) node->handle;
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if (port_id != 0)
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return SPA_RESULT_INVALID_PORT;
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if (!this->have_format)
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return SPA_RESULT_NO_FORMAT;
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*format = &this->current_format.format;
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return SPA_RESULT_OK;
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}
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static SpaResult
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spa_alsa_sink_node_port_get_info (SpaNode *node,
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uint32_t port_id,
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const SpaPortInfo **info)
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{
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SpaALSASink *this;
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if (node == NULL || node->handle == NULL || info == NULL)
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return SPA_RESULT_INVALID_ARGUMENTS;
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this = (SpaALSASink *) node->handle;
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if (port_id != 0)
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return SPA_RESULT_INVALID_PORT;
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*info = &this->info;
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return SPA_RESULT_OK;
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}
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static SpaResult
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spa_alsa_sink_node_port_get_props (SpaNode *node,
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uint32_t port_id,
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SpaProps **props)
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{
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return SPA_RESULT_NOT_IMPLEMENTED;
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}
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static SpaResult
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spa_alsa_sink_node_port_set_props (SpaNode *node,
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uint32_t port_id,
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const SpaProps *props)
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{
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return SPA_RESULT_NOT_IMPLEMENTED;
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}
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static SpaResult
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spa_alsa_sink_node_port_get_status (SpaNode *node,
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uint32_t port_id,
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const SpaPortStatus **status)
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{
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SpaALSASink *this;
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if (node == NULL || node->handle == NULL || status == NULL)
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return SPA_RESULT_INVALID_ARGUMENTS;
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this = (SpaALSASink *) node->handle;
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if (port_id != 0)
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return SPA_RESULT_INVALID_PORT;
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*status = &this->status;
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return SPA_RESULT_OK;
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}
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static SpaResult
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spa_alsa_sink_node_port_use_buffers (SpaNode *node,
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uint32_t port_id,
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SpaBuffer **buffers,
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uint32_t n_buffers)
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{
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return SPA_RESULT_NOT_IMPLEMENTED;
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}
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static SpaResult
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spa_alsa_sink_node_port_alloc_buffers (SpaNode *node,
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uint32_t port_id,
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SpaAllocParam **params,
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uint32_t n_params,
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SpaBuffer **buffers,
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uint32_t *n_buffers)
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{
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return SPA_RESULT_NOT_IMPLEMENTED;
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}
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static SpaBuffer *
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find_buffer (SpaALSASink *this, uint32_t id)
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{
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return NULL;
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}
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static SpaResult
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spa_alsa_sink_node_port_push_input (SpaNode *node,
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unsigned int n_info,
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SpaInputInfo *info)
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{
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SpaALSASink *this;
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unsigned int i;
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bool have_error = false, have_enough = false;
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if (node == NULL || node->handle == NULL || n_info == 0 || info == NULL)
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return SPA_RESULT_INVALID_ARGUMENTS;
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this = (SpaALSASink *) node->handle;
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for (i = 0; i < n_info; i++) {
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SpaBuffer *buffer;
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if (info[i].port_id != 0) {
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info[i].status = SPA_RESULT_INVALID_PORT;
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have_error = true;
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continue;
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}
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buffer = find_buffer (this, info[i].id);
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if (buffer != NULL) {
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if (!this->have_format) {
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info[i].status = SPA_RESULT_NO_FORMAT;
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have_error = true;
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continue;
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}
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if (this->input_buffer != NULL) {
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info[i].status = SPA_RESULT_HAVE_ENOUGH_INPUT;
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have_enough = true;
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continue;
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}
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this->input_buffer = spa_buffer_ref (buffer);
|
|
}
|
|
info[i].status = SPA_RESULT_OK;
|
|
}
|
|
if (have_error)
|
|
return SPA_RESULT_ERROR;
|
|
if (have_enough)
|
|
return SPA_RESULT_HAVE_ENOUGH_INPUT;
|
|
|
|
return SPA_RESULT_OK;
|
|
}
|
|
|
|
static SpaResult
|
|
spa_alsa_sink_node_port_pull_output (SpaNode *node,
|
|
unsigned int n_info,
|
|
SpaOutputInfo *info)
|
|
{
|
|
return SPA_RESULT_INVALID_PORT;
|
|
}
|
|
|
|
static const SpaNode alsasink_node = {
|
|
NULL,
|
|
sizeof (SpaNode),
|
|
spa_alsa_sink_node_get_props,
|
|
spa_alsa_sink_node_set_props,
|
|
spa_alsa_sink_node_send_command,
|
|
spa_alsa_sink_node_set_event_callback,
|
|
spa_alsa_sink_node_get_n_ports,
|
|
spa_alsa_sink_node_get_port_ids,
|
|
spa_alsa_sink_node_add_port,
|
|
spa_alsa_sink_node_remove_port,
|
|
spa_alsa_sink_node_port_enum_formats,
|
|
spa_alsa_sink_node_port_set_format,
|
|
spa_alsa_sink_node_port_get_format,
|
|
spa_alsa_sink_node_port_get_info,
|
|
spa_alsa_sink_node_port_get_props,
|
|
spa_alsa_sink_node_port_set_props,
|
|
spa_alsa_sink_node_port_use_buffers,
|
|
spa_alsa_sink_node_port_alloc_buffers,
|
|
spa_alsa_sink_node_port_get_status,
|
|
spa_alsa_sink_node_port_push_input,
|
|
spa_alsa_sink_node_port_pull_output,
|
|
};
|
|
|
|
static SpaResult
|
|
spa_alsa_sink_get_interface (SpaHandle *handle,
|
|
uint32_t interface_id,
|
|
void **interface)
|
|
{
|
|
SpaALSASink *this;
|
|
|
|
if (handle == NULL || interface == NULL)
|
|
return SPA_RESULT_INVALID_ARGUMENTS;
|
|
|
|
this = (SpaALSASink *) handle;
|
|
|
|
switch (interface_id) {
|
|
case SPA_INTERFACE_ID_NODE:
|
|
*interface = &this->node;
|
|
break;
|
|
default:
|
|
return SPA_RESULT_UNKNOWN_INTERFACE;
|
|
}
|
|
return SPA_RESULT_OK;
|
|
}
|
|
|
|
static SpaResult
|
|
alsa_sink_init (const SpaHandleFactory *factory,
|
|
SpaHandle *handle)
|
|
{
|
|
SpaALSASink *this;
|
|
|
|
if (factory == NULL || handle == NULL)
|
|
return SPA_RESULT_INVALID_ARGUMENTS;
|
|
|
|
handle->get_interface = spa_alsa_sink_get_interface;
|
|
|
|
this = (SpaALSASink *) handle;
|
|
this->node = alsasink_node;
|
|
this->node.handle = handle;
|
|
this->props[1].props.n_prop_info = PROP_ID_LAST;
|
|
this->props[1].props.prop_info = prop_info;
|
|
this->props[1].props.set_prop = spa_props_generic_set_prop;
|
|
this->props[1].props.get_prop = spa_props_generic_get_prop;
|
|
reset_alsa_sink_props (&this->props[1]);
|
|
|
|
this->info.flags = SPA_PORT_INFO_FLAG_NONE;
|
|
this->status.flags = SPA_PORT_STATUS_FLAG_NEED_INPUT;
|
|
|
|
return SPA_RESULT_OK;
|
|
}
|
|
|
|
static const SpaInterfaceInfo alsa_sink_interfaces[] =
|
|
{
|
|
{ SPA_INTERFACE_ID_NODE,
|
|
SPA_INTERFACE_ID_NODE_NAME,
|
|
SPA_INTERFACE_ID_NODE_DESCRIPTION,
|
|
},
|
|
};
|
|
|
|
static SpaResult
|
|
alsa_sink_enum_interface_info (const SpaHandleFactory *factory,
|
|
const SpaInterfaceInfo **info,
|
|
void **state)
|
|
{
|
|
int index;
|
|
|
|
if (factory == NULL || info == NULL || state == NULL)
|
|
return SPA_RESULT_INVALID_ARGUMENTS;
|
|
|
|
index = (*state == NULL ? 0 : *(int*)state);
|
|
|
|
switch (index) {
|
|
case 0:
|
|
*info = &alsa_sink_interfaces[index];
|
|
break;
|
|
default:
|
|
return SPA_RESULT_ENUM_END;
|
|
}
|
|
*(int*)state = ++index;
|
|
|
|
return SPA_RESULT_OK;
|
|
}
|
|
|
|
const SpaHandleFactory spa_alsa_sink_factory =
|
|
{ "alsa-sink",
|
|
NULL,
|
|
sizeof (SpaALSASink),
|
|
alsa_sink_init,
|
|
alsa_sink_enum_interface_info,
|
|
};
|