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Diffstat (limited to 'src/pcm_export.h')
-rw-r--r-- | src/pcm_export.h | 147 |
1 files changed, 0 insertions, 147 deletions
diff --git a/src/pcm_export.h b/src/pcm_export.h deleted file mode 100644 index a7e7c3f68..000000000 --- a/src/pcm_export.h +++ /dev/null @@ -1,147 +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. - */ - -#ifndef PCM_EXPORT_H -#define PCM_EXPORT_H - -#include "check.h" -#include "pcm_buffer.h" -#include "audio_format.h" - -#include <stdbool.h> - -struct audio_format; - -/** - * An object that handles export of PCM samples to some instance - * outside of MPD. It has a few more options to tweak the binary - * representation which are not supported by the pcm_convert library. - */ -struct pcm_export_state { - /** - * The buffer is used to convert DSD samples to the - * DSD-over-USB format. - * - * @see #dsd_usb - */ - struct pcm_buffer dsd_buffer; - - /** - * The buffer is used to pack samples, removing padding. - * - * @see #pack24 - */ - struct pcm_buffer pack_buffer; - - /** - * The buffer is used to reverse the byte order. - * - * @see #reverse_endian - */ - struct pcm_buffer reverse_buffer; - - /** - * The number of channels. - */ - uint8_t channels; - - /** - * Convert DSD to DSD-over-USB? Input format must be - * SAMPLE_FORMAT_DSD and output format must be - * SAMPLE_FORMAT_S24_P32. - */ - bool dsd_usb; - - /** - * Convert (padded) 24 bit samples to 32 bit by shifting 8 - * bits to the left? - */ - bool shift8; - - /** - * Pack 24 bit samples? - */ - bool pack24; - - /** - * Export the samples in reverse byte order? A non-zero value - * means the option is enabled and represents the size of each - * sample (2 or bigger). - */ - uint8_t reverse_endian; -}; - -/** - * Initialize a #pcm_export_state object. - */ -void -pcm_export_init(struct pcm_export_state *state); - -/** - * Deinitialize a #pcm_export_state object and free allocated memory. - */ -void -pcm_export_deinit(struct pcm_export_state *state); - -/** - * Open the #pcm_export_state object. - * - * There is no "close" method. This function may be called multiple - * times to reuse the object, until pcm_export_deinit() is called. - * - * This function cannot fail. - * - * @param channels the number of channels; ignored unless dsd_usb is set - */ -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); - -/** - * Calculate the size of one output frame. - */ -G_GNUC_PURE -size_t -pcm_export_frame_size(const struct pcm_export_state *state, - const struct audio_format *audio_format); - -/** - * Export a PCM buffer. - * - * @param state an initialized and open pcm_export_state object - * @param src the source PCM buffer - * @param src_size the size of #src in bytes - * @param dest_size_r returns the number of bytes of the destination buffer - * @return the destination buffer (may be a pointer to the source buffer) - */ -const void * -pcm_export(struct pcm_export_state *state, const void *src, size_t src_size, - size_t *dest_size_r); - -/** - * Converts the number of consumed bytes from the pcm_export() - * destination buffer to the according number of bytes from the - * pcm_export() source buffer. - */ -G_GNUC_PURE -size_t -pcm_export_source_size(const struct pcm_export_state *state, size_t dest_size); - -#endif |