diff options
Diffstat (limited to 'src/pulsecore/sound-file.c')
| -rw-r--r-- | src/pulsecore/sound-file.c | 163 |
1 files changed, 163 insertions, 0 deletions
diff --git a/src/pulsecore/sound-file.c b/src/pulsecore/sound-file.c new file mode 100644 index 0000000..f678430 --- /dev/null +++ b/src/pulsecore/sound-file.c @@ -0,0 +1,163 @@ +/*** + This file is part of PulseAudio. + + Copyright 2004-2006 Lennart Poettering + + PulseAudio is free software; you can redistribute it and/or modify + it under the terms of the GNU Lesser General Public License as published + by the Free Software Foundation; either version 2.1 of the License, + or (at your option) any later version. + + PulseAudio 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 Lesser General Public License + along with PulseAudio; if not, see <http://www.gnu.org/licenses/>. +***/ + +#ifdef HAVE_CONFIG_H +#include <config.h> +#endif + +#include <unistd.h> +#include <fcntl.h> +#include <errno.h> + +#include <sndfile.h> + +#include <pulse/sample.h> +#include <pulsecore/log.h> +#include <pulsecore/macro.h> +#include <pulsecore/core-error.h> +#include <pulsecore/core-util.h> +#include <pulsecore/core-scache.h> +#include <pulsecore/sndfile-util.h> + +#include "sound-file.h" + +int pa_sound_file_load( + pa_mempool *pool, + const char *fname, + pa_sample_spec *ss, + pa_channel_map *map, + pa_memchunk *chunk, + pa_proplist *p) { + + SNDFILE *sf = NULL; + SF_INFO sfi; + int ret = -1; + size_t l; + sf_count_t (*readf_function)(SNDFILE *sndfile, void *ptr, sf_count_t frames) = NULL; + void *ptr = NULL; + int fd; + + pa_assert(fname); + pa_assert(ss); + pa_assert(chunk); + + pa_memchunk_reset(chunk); + + if ((fd = pa_open_cloexec(fname, O_RDONLY, 0)) < 0) { + pa_log("Failed to open file %s: %s", fname, pa_cstrerror(errno)); + goto finish; + } + +#ifdef HAVE_POSIX_FADVISE + if (posix_fadvise(fd, 0, 0, POSIX_FADV_SEQUENTIAL) < 0) { + pa_log_warn("POSIX_FADV_SEQUENTIAL failed: %s", pa_cstrerror(errno)); + goto finish; + } else + pa_log_debug("POSIX_FADV_SEQUENTIAL succeeded."); +#endif + + pa_zero(sfi); + if (!(sf = sf_open_fd(fd, SFM_READ, &sfi, 1))) { + pa_log("Failed to open file %s", fname); + goto finish; + } + + fd = -1; + + if (pa_sndfile_read_sample_spec(sf, ss) < 0) { + pa_log("Failed to determine file sample format."); + goto finish; + } + + if ((map && pa_sndfile_read_channel_map(sf, map) < 0)) { + if (ss->channels > 2) + pa_log("Failed to determine file channel map, synthesizing one."); + pa_channel_map_init_extend(map, ss->channels, PA_CHANNEL_MAP_DEFAULT); + } + + if (p) + pa_sndfile_init_proplist(sf, p); + + if ((l = pa_frame_size(ss) * (size_t) sfi.frames) > PA_SCACHE_ENTRY_SIZE_MAX) { + pa_log("File too large"); + goto finish; + } + + chunk->memblock = pa_memblock_new(pool, l); + chunk->index = 0; + chunk->length = l; + + readf_function = pa_sndfile_readf_function(ss); + + ptr = pa_memblock_acquire(chunk->memblock); + + if ((readf_function && readf_function(sf, ptr, sfi.frames) != sfi.frames) || + (!readf_function && sf_read_raw(sf, ptr, (sf_count_t) l) != (sf_count_t) l)) { + pa_log("Premature file end"); + goto finish; + } + + ret = 0; + +finish: + + if (sf) + sf_close(sf); + + if (ptr) + pa_memblock_release(chunk->memblock); + + if (ret != 0 && chunk->memblock) + pa_memblock_unref(chunk->memblock); + + if (fd >= 0) + pa_close(fd); + + return ret; +} + +int pa_sound_file_too_big_to_cache(const char *fname) { + + SNDFILE*sf = NULL; + SF_INFO sfi; + pa_sample_spec ss; + + pa_assert(fname); + + pa_zero(sfi); + if (!(sf = sf_open(fname, SFM_READ, &sfi))) { + pa_log("Failed to open file %s", fname); + return -1; + } + + if (pa_sndfile_read_sample_spec(sf, &ss) < 0) { + pa_log("Failed to determine file sample format."); + sf_close(sf); + return -1; + } + + sf_close(sf); + + if ((pa_frame_size(&ss) * (size_t) sfi.frames) > PA_SCACHE_ENTRY_SIZE_MAX) { + pa_log("File too large: %s", fname); + return 1; + } + + return 0; +} |