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Diffstat (limited to '')
| -rw-r--r-- | src/pcm_resample.h | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/src/pcm_resample.h b/src/pcm_resample.h new file mode 100644 index 000000000..d6001550a --- /dev/null +++ b/src/pcm_resample.h @@ -0,0 +1,63 @@ +/* the Music Player Daemon (MPD) + * Copyright (C) 2003-2007 by Warren Dukes (warren.dukes@gmail.com) + * Copyright (C) 2008 Max Kellermann <max@duempel.org> + * This project's homepage is: 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +#ifndef MPD_PCM_RESAMPLE_H +#define MPD_PCM_RESAMPLE_H + +#include "config.h" + +#include <stdint.h> +#include <stddef.h> +#include <stdbool.h> + +#ifdef HAVE_LIBSAMPLERATE +#include <samplerate.h> +#endif + +struct pcm_resample_state { +#ifdef HAVE_LIBSAMPLERATE + SRC_STATE *state; + SRC_DATA data; + size_t data_in_size; + size_t data_out_size; + + struct { + unsigned src_rate; + unsigned dest_rate; + uint8_t channels; + } prev; + + bool error; +#else + /* struct must not be empty */ + int dummy; +#endif +}; + +void pcm_resample_init(struct pcm_resample_state *state); + +size_t +pcm_resample_16(uint8_t channels, + unsigned src_rate, + const int16_t *src_buffer, size_t src_size, + unsigned dest_rate, + int16_t *dest_buffer, size_t dest_size, + struct pcm_resample_state *state); + +#endif |