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-rw-r--r--src/pcm_export.c160
1 files changed, 0 insertions, 160 deletions
diff --git a/src/pcm_export.c b/src/pcm_export.c
deleted file mode 100644
index 144ac71cd..000000000
--- a/src/pcm_export.c
+++ /dev/null
@@ -1,160 +0,0 @@
-/*
- * Copyright (C) 2003-2012 The Music Player Daemon Project
- * http://www.musicpd.org
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program 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 General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write to the Free Software Foundation, Inc.,
- * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
- */
-
-#include "config.h"
-#include "pcm_export.h"
-#include "pcm_dsd_usb.h"
-#include "pcm_pack.h"
-#include "util/byte_reverse.h"
-
-void
-pcm_export_init(struct pcm_export_state *state)
-{
- pcm_buffer_init(&state->reverse_buffer);
- pcm_buffer_init(&state->pack_buffer);
- pcm_buffer_init(&state->dsd_buffer);
-}
-
-void pcm_export_deinit(struct pcm_export_state *state)
-{
- pcm_buffer_deinit(&state->reverse_buffer);
- pcm_buffer_deinit(&state->pack_buffer);
- pcm_buffer_deinit(&state->dsd_buffer);
-}
-
-void
-pcm_export_open(struct pcm_export_state *state,
- enum sample_format sample_format, unsigned channels,
- bool dsd_usb, bool shift8, bool pack, bool reverse_endian)
-{
- assert(audio_valid_sample_format(sample_format));
- assert(!dsd_usb || audio_valid_channel_count(channels));
-
- state->channels = channels;
- state->dsd_usb = dsd_usb && sample_format == SAMPLE_FORMAT_DSD;
- if (state->dsd_usb)
- /* after the conversion to DSD-over-USB, the DSD
- samples are stuffed inside fake 24 bit samples */
- sample_format = SAMPLE_FORMAT_S24_P32;
-
- state->shift8 = shift8 && sample_format == SAMPLE_FORMAT_S24_P32;
- state->pack24 = pack && sample_format == SAMPLE_FORMAT_S24_P32;
-
- assert(!state->shift8 || !state->pack24);
-
- state->reverse_endian = 0;
- if (reverse_endian) {
- size_t sample_size = state->pack24
- ? 3
- : sample_format_size(sample_format);
- assert(sample_size <= 0xff);
-
- if (sample_size > 1)
- state->reverse_endian = sample_size;
- }
-}
-
-size_t
-pcm_export_frame_size(const struct pcm_export_state *state,
- const struct audio_format *audio_format)
-{
- assert(state != NULL);
- assert(audio_format != NULL);
-
- if (state->pack24)
- /* packed 24 bit samples (3 bytes per sample) */
- return audio_format->channels * 3;
-
- if (state->dsd_usb)
- /* the DSD-over-USB draft says that DSD 1-bit samples
- are enclosed within 24 bit samples, and MPD's
- representation of 24 bit is padded to 32 bit (4
- bytes per sample) */
- return audio_format->channels * 4;
-
- return audio_format_frame_size(audio_format);
-}
-
-const void *
-pcm_export(struct pcm_export_state *state, const void *data, size_t size,
- size_t *dest_size_r)
-{
- if (state->dsd_usb)
- data = pcm_dsd_to_usb(&state->dsd_buffer, state->channels,
- data, size, &size);
-
- if (state->pack24) {
- assert(size % 4 == 0);
-
- const size_t num_samples = size / 4;
- const size_t dest_size = num_samples * 3;
-
- const uint8_t *src8 = data, *src_end8 = src8 + size;
- uint8_t *dest = pcm_buffer_get(&state->pack_buffer, dest_size);
- assert(dest != NULL);
-
- pcm_pack_24(dest, (const int32_t *)src8,
- (const int32_t *)src_end8);
-
- data = dest;
- size = dest_size;
- } else if (state->shift8) {
- assert(size % 4 == 0);
-
- const uint8_t *src8 = data, *src_end8 = src8 + size;
- const uint32_t *src = (const uint32_t *)src8;
- const uint32_t *const src_end = (const uint32_t *)src_end8;
-
- uint32_t *dest = pcm_buffer_get(&state->pack_buffer, size);
- data = dest;
-
- while (src < src_end)
- *dest++ = *src++ << 8;
- }
-
-
- if (state->reverse_endian > 0) {
- assert(state->reverse_endian >= 2);
-
- void *dest = pcm_buffer_get(&state->reverse_buffer, size);
- assert(dest != NULL);
-
- const uint8_t *src = data, *src_end = src + size;
- reverse_bytes(dest, src, src_end, state->reverse_endian);
-
- data = dest;
- }
-
- *dest_size_r = size;
- return data;
-}
-
-size_t
-pcm_export_source_size(const struct pcm_export_state *state, size_t size)
-{
- if (state->pack24)
- /* 32 bit to 24 bit conversion (4 to 3 bytes) */
- size = (size / 3) * 4;
-
- if (state->dsd_usb)
- /* DSD over USB doubles the transport size */
- size /= 2;
-
- return size;
-}