1 files changed, 0 insertions, 254 deletions
diff --git a/cras/src/server/cras_empty_iodev.c b/cras/src/server/cras_empty_iodev.c
deleted file mode 100644
index 3471c756..00000000
--- a/cras/src/server/cras_empty_iodev.c
+++ /dev/null
@@ -1,254 +0,0 @@
-/* Copyright (c) 2012 The Chromium OS Authors. All rights reserved.
- * Use of this source code is governed by a BSD-style license that can be
- * found in the LICENSE file.
- */
-
-#include <pthread.h>
-#include <sys/param.h>
-#include <syslog.h>
-
-#include "cras_audio_area.h"
-#include "cras_config.h"
-#include "cras_iodev.h"
-#include "cras_iodev_list.h"
-#include "cras_rstream.h"
-#include "cras_types.h"
-#include "utlist.h"
-
-#define EMPTY_BUFFER_SIZE (32 * 1024)
-#define MAX_EMPTY_FRAME_SIZE 8
-#define EMPTY_FRAMES (EMPTY_BUFFER_SIZE / MAX_EMPTY_FRAME_SIZE)
-
-static size_t empty_supported_rates[] = { 44100, 48000, 0 };
-
-static size_t empty_supported_channel_counts[] = { 1, 2, 0 };
-
-static snd_pcm_format_t empty_supported_formats[] = {
-	SND_PCM_FORMAT_S16_LE, SND_PCM_FORMAT_S24_LE, SND_PCM_FORMAT_S32_LE,
-	SND_PCM_FORMAT_S24_3LE, 0
-};
-
-struct empty_iodev {
-	struct cras_iodev base;
-	uint8_t *audio_buffer;
-	uint64_t read_frames, written_frames;
-	struct timespec dev_start_time;
-};
-
-/*
- * Current level of the audio buffer.  This is made up based on what has been
- * read/written and how long it has been since the start. Simulates audio
- * hardware running at the given sample rate.
- */
-static unsigned int current_level(const struct cras_iodev *iodev)
-{
-	struct empty_iodev *empty_iodev = (struct empty_iodev *)iodev;
-	uint64_t frames_since_start, nframes;
-
-	if (iodev->active_node->type == CRAS_NODE_TYPE_HOTWORD)
-		return 0;
-
-	frames_since_start = cras_frames_since_time(
-		&empty_iodev->dev_start_time, iodev->format->frame_rate);
-
-	if (iodev->direction == CRAS_STREAM_INPUT) {
-		nframes = frames_since_start - empty_iodev->read_frames;
-		return MIN(nframes, EMPTY_FRAMES);
-	}
-
-	/* output */
-	if (empty_iodev->written_frames <= frames_since_start)
-		return 0;
-	return empty_iodev->written_frames - frames_since_start;
-}
-
-/*
- * iodev callbacks.
- */
-
-static int frames_queued(const struct cras_iodev *iodev,
-			 struct timespec *tstamp)
-{
-	clock_gettime(CLOCK_MONOTONIC_RAW, tstamp);
-	return current_level(iodev);
-}
-
-static int delay_frames(const struct cras_iodev *iodev)
-{
-	return 0;
-}
-
-static int close_dev(struct cras_iodev *iodev)
-{
-	struct empty_iodev *empty_iodev = (struct empty_iodev *)iodev;
-
-	free(empty_iodev->audio_buffer);
-	empty_iodev->audio_buffer = NULL;
-	cras_iodev_free_audio_area(iodev);
-	return 0;
-}
-
-static int configure_dev(struct cras_iodev *iodev)
-{
-	struct empty_iodev *empty_iodev = (struct empty_iodev *)iodev;
-
-	if (iodev->format == NULL)
-		return -EINVAL;
-
-	cras_iodev_init_audio_area(iodev, iodev->format->num_channels);
-	empty_iodev->audio_buffer = calloc(1, EMPTY_BUFFER_SIZE);
-	empty_iodev->read_frames = 0;
-	empty_iodev->written_frames = 0;
-
-	clock_gettime(CLOCK_MONOTONIC_RAW, &empty_iodev->dev_start_time);
-
-	return 0;
-}
-
-static int get_buffer(struct cras_iodev *iodev, struct cras_audio_area **area,
-		      unsigned *frames)
-{
-	struct empty_iodev *empty_iodev = (struct empty_iodev *)iodev;
-	unsigned int avail, current;
-
-	if (iodev->direction == CRAS_STREAM_OUTPUT) {
-		avail = EMPTY_FRAMES - current_level(iodev);
-		*frames = MIN(*frames, avail);
-	} else {
-		current = current_level(iodev);
-		*frames = MIN(*frames, current);
-	}
-
-	iodev->area->frames = *frames;
-	cras_audio_area_config_buf_pointers(iodev->area, iodev->format,
-					    empty_iodev->audio_buffer);
-	*area = iodev->area;
-	return 0;
-}
-
-/*
- * Returns -EPIPE if there are not enough frames or spaces in device buffer.
- * It matches other alsa-based devices.
- */
-static int put_buffer(struct cras_iodev *iodev, unsigned frames)
-{
-	struct empty_iodev *empty_iodev = (struct empty_iodev *)iodev;
-
-	if (iodev->direction == CRAS_STREAM_INPUT) {
-		if (current_level(iodev) < frames)
-			return -EPIPE;
-		empty_iodev->read_frames += frames;
-	} else {
-		if (EMPTY_FRAMES - current_level(iodev) < frames)
-			return -EPIPE;
-		empty_iodev->written_frames += frames;
-	}
-	return 0;
-}
-
-static int flush_buffer(struct cras_iodev *iodev)
-{
-	struct empty_iodev *empty_iodev = (struct empty_iodev *)iodev;
-
-	if (iodev->direction == CRAS_STREAM_INPUT)
-		empty_iodev->read_frames = 0;
-	else
-		empty_iodev->written_frames = 0;
-
-	clock_gettime(CLOCK_MONOTONIC_RAW, &empty_iodev->dev_start_time);
-	return 0;
-}
-
-static void update_active_node(struct cras_iodev *iodev, unsigned node_idx,
-			       unsigned dev_enabled)
-{
-}
-
-/*
- * Exported Interface.
- */
-
-struct cras_iodev *empty_iodev_create(enum CRAS_STREAM_DIRECTION direction,
-				      enum CRAS_NODE_TYPE node_type)
-{
-	struct empty_iodev *empty_iodev;
-	struct cras_iodev *iodev;
-	struct cras_ionode *node;
-
-	if (direction != CRAS_STREAM_INPUT && direction != CRAS_STREAM_OUTPUT)
-		return NULL;
-
-	empty_iodev = calloc(1, sizeof(*empty_iodev));
-	if (empty_iodev == NULL)
-		return NULL;
-	iodev = &empty_iodev->base;
-	iodev->direction = direction;
-
-	iodev->supported_rates = empty_supported_rates;
-	iodev->supported_channel_counts = empty_supported_channel_counts;
-	iodev->supported_formats = empty_supported_formats;
-	iodev->buffer_size = EMPTY_FRAMES;
-
-	iodev->configure_dev = configure_dev;
-	iodev->close_dev = close_dev;
-	iodev->frames_queued = frames_queued;
-	iodev->delay_frames = delay_frames;
-	iodev->get_buffer = get_buffer;
-	iodev->put_buffer = put_buffer;
-	iodev->flush_buffer = flush_buffer;
-	iodev->update_active_node = update_active_node;
-	iodev->no_stream = cras_iodev_default_no_stream_playback;
-
-	/* Create an empty ionode */
-	node = (struct cras_ionode *)calloc(1, sizeof(*node));
-	node->dev = iodev;
-	node->type = node_type;
-	node->volume = 100;
-	node->ui_gain_scaler = 1.0f;
-	strcpy(node->name, "(default)");
-	cras_iodev_add_node(iodev, node);
-	cras_iodev_set_active_node(iodev, node);
-
-	/* Finally add it to the appropriate iodev list. */
-	if (direction == CRAS_STREAM_INPUT) {
-		if (node->type == CRAS_NODE_TYPE_HOTWORD) {
-			snprintf(iodev->info.name, ARRAY_SIZE(iodev->info.name),
-				 "Silent hotword device.");
-			iodev->info.name[ARRAY_SIZE(iodev->info.name) - 1] =
-				'\0';
-			iodev->info.idx = SILENT_HOTWORD_DEVICE;
-		} else {
-			snprintf(iodev->info.name, ARRAY_SIZE(iodev->info.name),
-				 "Silent record device.");
-			iodev->info.name[ARRAY_SIZE(iodev->info.name) - 1] =
-				'\0';
-			iodev->info.idx = SILENT_RECORD_DEVICE;
-		}
-	} else {
-		snprintf(iodev->info.name, ARRAY_SIZE(iodev->info.name),
-			 "Silent playback device.");
-		iodev->info.name[ARRAY_SIZE(iodev->info.name) - 1] = '\0';
-		iodev->info.idx = SILENT_PLAYBACK_DEVICE;
-	}
-
-	/*
-	 * Record max supported channels into cras_iodev_info.
-	 * The value is the max of empty_supported_channel_counts.
-	 */
-	iodev->info.max_supported_channels = 2;
-
-	return iodev;
-}
-
-void empty_iodev_destroy(struct cras_iodev *iodev)
-{
-	struct empty_iodev *empty_iodev = (struct empty_iodev *)iodev;
-
-	if (iodev->direction == CRAS_STREAM_INPUT)
-		cras_iodev_list_rm_input(iodev);
-	else
-		cras_iodev_list_rm_output(iodev);
-	free(iodev->active_node);
-	cras_iodev_free_resources(iodev);
-	free(empty_iodev);
-}