diff options
Diffstat (limited to 'cras/src/server/cras_audio_area.c')
-rw-r--r-- | cras/src/server/cras_audio_area.c | 105 |
1 files changed, 0 insertions, 105 deletions
diff --git a/cras/src/server/cras_audio_area.c b/cras/src/server/cras_audio_area.c deleted file mode 100644 index 18615733..00000000 --- a/cras/src/server/cras_audio_area.c +++ /dev/null @@ -1,105 +0,0 @@ -/* Copyright (c) 2014 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 <stdlib.h> -#include <sys/param.h> - -#include "cras_audio_area.h" -#include "cras_audio_format.h" -#include "cras_mix.h" - -struct cras_audio_area *cras_audio_area_create(int num_channels) -{ - struct cras_audio_area *area; - size_t sz; - - sz = sizeof(*area) + num_channels * sizeof(struct cras_channel_area); - area = calloc(1, sz); - area->num_channels = num_channels; - - return area; -} - -unsigned int cras_audio_area_copy(const struct cras_audio_area *dst, - unsigned int dst_offset, - const struct cras_audio_format *dst_fmt, - const struct cras_audio_area *src, - unsigned int src_offset, - float software_gain_scaler) -{ - unsigned int src_idx, dst_idx; - unsigned int ncopy; - uint8_t *schan, *dchan; - - ncopy = MIN(src->frames - src_offset, dst->frames - dst_offset); - - /* TODO(dgreid) - this replaces a memcpy, it needs to be way faster. */ - for (src_idx = 0; src_idx < src->num_channels; src_idx++) { - for (dst_idx = 0; dst_idx < dst->num_channels; dst_idx++) { - if (!(src->channels[src_idx].ch_set & - dst->channels[dst_idx].ch_set)) - continue; - - schan = src->channels[src_idx].buf + - src_offset * src->channels[src_idx].step_bytes; - dchan = dst->channels[dst_idx].buf + - dst_offset * dst->channels[dst_idx].step_bytes; - - cras_mix_add_scale_stride( - dst_fmt->format, dchan, schan, ncopy, - dst->channels[dst_idx].step_bytes, - src->channels[src_idx].step_bytes, - software_gain_scaler); - } - } - - return ncopy; -} - -void cras_audio_area_destroy(struct cras_audio_area *area) -{ - free(area); -} - -void cras_audio_area_config_channels(struct cras_audio_area *area, - const struct cras_audio_format *fmt) -{ - unsigned int i, ch; - - /* For mono, config the channel type to match both front - * left and front right. - * TODO(hychao): add more mapping when we have like {FL, FC} - * for mono + kb mic. - */ - if ((fmt->num_channels == 1) && - ((fmt->channel_layout[CRAS_CH_FC] == 0) || - (fmt->channel_layout[CRAS_CH_FL] == 0))) { - channel_area_set_channel(area->channels, CRAS_CH_FL); - channel_area_set_channel(area->channels, CRAS_CH_FR); - return; - } - - for (i = 0; i < fmt->num_channels; i++) { - area->channels[i].ch_set = 0; - for (ch = 0; ch < CRAS_CH_MAX; ch++) - if (fmt->channel_layout[ch] == i) - channel_area_set_channel(&area->channels[i], - ch); - } -} - -void cras_audio_area_config_buf_pointers(struct cras_audio_area *area, - const struct cras_audio_format *fmt, - uint8_t *base_buffer) -{ - int i; - const int sample_size = snd_pcm_format_physical_width(fmt->format) / 8; - - /* TODO(dgreid) - assuming interleaved audio here for now. */ - for (i = 0; i < area->num_channels; i++) { - area->channels[i].step_bytes = cras_get_format_bytes(fmt); - area->channels[i].buf = base_buffer + i * sample_size; - } -} |