diff options
Diffstat (limited to 'formats')
-rw-r--r-- | formats/format_siren14.c | 139 | ||||
-rw-r--r-- | formats/format_siren7.c | 138 |
2 files changed, 277 insertions, 0 deletions
diff --git a/formats/format_siren14.c b/formats/format_siren14.c new file mode 100644 index 000000000..109c586fb --- /dev/null +++ b/formats/format_siren14.c @@ -0,0 +1,139 @@ +/* + * Asterisk -- An open source telephony toolkit. + * + * Copyright (C) 1999 - 2008, Anthony Minessale and Digium, Inc. + * Anthony Minessale (anthmct@yahoo.com) + * Kevin P. Fleming <kpfleming@digium.com> + * + * See http://www.asterisk.org for more information about + * the Asterisk project. Please do not directly contact + * any of the maintainers of this project for assistance; + * the project provides a web site, mailing lists and IRC + * channels for your use. + * + * This program is free software, distributed under the terms of + * the GNU General Public License Version 2. See the LICENSE file + * at the top of the source tree. + */ + +/*! \file + * + * \brief ITU G.722.1 Annex C (Siren14, licensed from Polycom) format, 48kbps bitrate only + * \arg File name extensions: siren14 + * \ingroup formats + */ + +#include "asterisk.h" + +ASTERISK_FILE_VERSION(__FILE__, "$Revision$") + +#include "asterisk/mod_format.h" +#include "asterisk/module.h" +#include "asterisk/endian.h" + +#define BUF_SIZE 120 /* 20 milliseconds == 120 bytes, 640 samples */ +#define SAMPLES_TO_BYTES(x) ((typeof(x)) x / ((float) 640 / 120)) +#define BYTES_TO_SAMPLES(x) ((typeof(x)) x * ((float) 640 / 120)) + +static struct ast_frame *siren14read(struct ast_filestream *s, int *whennext) +{ + int res; + /* Send a frame from the file to the appropriate channel */ + + s->fr.frametype = AST_FRAME_VOICE; + s->fr.subclass = AST_FORMAT_SIREN14; + s->fr.mallocd = 0; + AST_FRAME_SET_BUFFER(&s->fr, s->buf, AST_FRIENDLY_OFFSET, BUF_SIZE); + if ((res = fread(s->fr.data.ptr, 1, s->fr.datalen, s->f)) != s->fr.datalen) { + if (res) + ast_log(LOG_WARNING, "Short read (%d) (%s)!\n", res, strerror(errno)); + return NULL; + } + *whennext = s->fr.samples = BYTES_TO_SAMPLES(res); + ast_log(LOG_DEBUG, "Read frame of %d bytes and %d samples\n", res, s->fr.samples); + return &s->fr; +} + +static int siren14write(struct ast_filestream *fs, struct ast_frame *f) +{ + int res; + + if (f->frametype != AST_FRAME_VOICE) { + ast_log(LOG_WARNING, "Asked to write non-voice frame!\n"); + return -1; + } + if (f->subclass != AST_FORMAT_SIREN14) { + ast_log(LOG_WARNING, "Asked to write non-Siren14 frame (%d)!\n", f->subclass); + return -1; + } + if ((res = fwrite(f->data.ptr, 1, f->datalen, fs->f)) != f->datalen) { + ast_log(LOG_WARNING, "Bad write (%d/%d): %s\n", res, f->datalen, strerror(errno)); + return -1; + } + return 0; +} + +static int siren14seek(struct ast_filestream *fs, off_t sample_offset, int whence) +{ + off_t offset = 0, min = 0, cur, max; + + sample_offset = SAMPLES_TO_BYTES(sample_offset); + + cur = ftello(fs->f); + + fseeko(fs->f, 0, SEEK_END); + + max = ftello(fs->f); + + if (whence == SEEK_SET) + offset = sample_offset; + else if (whence == SEEK_CUR || whence == SEEK_FORCECUR) + offset = sample_offset + cur; + else if (whence == SEEK_END) + offset = max - sample_offset; + + if (whence != SEEK_FORCECUR) + offset = (offset > max) ? max : offset; + + /* always protect against seeking past begining. */ + offset = (offset < min) ? min : offset; + + return fseeko(fs->f, offset, SEEK_SET); +} + +static int siren14trunc(struct ast_filestream *fs) +{ + return ftruncate(fileno(fs->f), ftello(fs->f)); +} + +static off_t siren14tell(struct ast_filestream *fs) +{ + return BYTES_TO_SAMPLES(ftello(fs->f)); +} + +static const struct ast_format siren14_f = { + .name = "siren14", + .exts = "siren14", + .format = AST_FORMAT_SIREN14, + .write = siren14write, + .seek = siren14seek, + .trunc = siren14trunc, + .tell = siren14tell, + .read = siren14read, + .buf_size = BUF_SIZE + AST_FRIENDLY_OFFSET, +}; + +static int load_module(void) +{ + if (ast_format_register(&siren14_f)) + return AST_MODULE_LOAD_DECLINE; + + return AST_MODULE_LOAD_SUCCESS; +} + +static int unload_module(void) +{ + return ast_format_unregister(siren14_f.name); +} + +AST_MODULE_INFO_STANDARD(ASTERISK_GPL_KEY, "ITU G.722.1 Annex C (Siren14, licensed from Polycom)"); diff --git a/formats/format_siren7.c b/formats/format_siren7.c new file mode 100644 index 000000000..0b61a72b2 --- /dev/null +++ b/formats/format_siren7.c @@ -0,0 +1,138 @@ +/* + * Asterisk -- An open source telephony toolkit. + * + * Copyright (C) 1999 - 2008, Anthony Minessale and Digium, Inc. + * Anthony Minessale (anthmct@yahoo.com) + * Kevin P. Fleming <kpfleming@digium.com> + * + * See http://www.asterisk.org for more information about + * the Asterisk project. Please do not directly contact + * any of the maintainers of this project for assistance; + * the project provides a web site, mailing lists and IRC + * channels for your use. + * + * This program is free software, distributed under the terms of + * the GNU General Public License Version 2. See the LICENSE file + * at the top of the source tree. + */ + +/*! \file + * + * \brief ITU G.722.1 (Siren7, licensed from Polycom) format, 32kbps bitrate only + * \arg File name extensions: siren7 + * \ingroup formats + */ + +#include "asterisk.h" + +ASTERISK_FILE_VERSION(__FILE__, "$Revision$") + +#include "asterisk/mod_format.h" +#include "asterisk/module.h" +#include "asterisk/endian.h" + +#define BUF_SIZE 80 /* 20 milliseconds == 80 bytes, 320 samples */ +#define SAMPLES_TO_BYTES(x) x / (320 / 80) +#define BYTES_TO_SAMPLES(x) x * (320 / 80) + +static struct ast_frame *siren7read(struct ast_filestream *s, int *whennext) +{ + int res; + /* Send a frame from the file to the appropriate channel */ + + s->fr.frametype = AST_FRAME_VOICE; + s->fr.subclass = AST_FORMAT_SIREN7; + s->fr.mallocd = 0; + AST_FRAME_SET_BUFFER(&s->fr, s->buf, AST_FRIENDLY_OFFSET, BUF_SIZE); + if ((res = fread(s->fr.data.ptr, 1, s->fr.datalen, s->f)) != s->fr.datalen) { + if (res) + ast_log(LOG_WARNING, "Short read (%d) (%s)!\n", res, strerror(errno)); + return NULL; + } + *whennext = s->fr.samples = BYTES_TO_SAMPLES(res); + return &s->fr; +} + +static int siren7write(struct ast_filestream *fs, struct ast_frame *f) +{ + int res; + + if (f->frametype != AST_FRAME_VOICE) { + ast_log(LOG_WARNING, "Asked to write non-voice frame!\n"); + return -1; + } + if (f->subclass != AST_FORMAT_SIREN7) { + ast_log(LOG_WARNING, "Asked to write non-Siren7 frame (%d)!\n", f->subclass); + return -1; + } + if ((res = fwrite(f->data.ptr, 1, f->datalen, fs->f)) != f->datalen) { + ast_log(LOG_WARNING, "Bad write (%d/%d): %s\n", res, f->datalen, strerror(errno)); + return -1; + } + return 0; +} + +static int siren7seek(struct ast_filestream *fs, off_t sample_offset, int whence) +{ + off_t offset = 0, min = 0, cur, max; + + sample_offset = SAMPLES_TO_BYTES(sample_offset); + + cur = ftello(fs->f); + + fseeko(fs->f, 0, SEEK_END); + + max = ftello(fs->f); + + if (whence == SEEK_SET) + offset = sample_offset; + else if (whence == SEEK_CUR || whence == SEEK_FORCECUR) + offset = sample_offset + cur; + else if (whence == SEEK_END) + offset = max - sample_offset; + + if (whence != SEEK_FORCECUR) + offset = (offset > max) ? max : offset; + + /* always protect against seeking past begining. */ + offset = (offset < min) ? min : offset; + + return fseeko(fs->f, offset, SEEK_SET); +} + +static int siren7trunc(struct ast_filestream *fs) +{ + return ftruncate(fileno(fs->f), ftello(fs->f)); +} + +static off_t siren7tell(struct ast_filestream *fs) +{ + return BYTES_TO_SAMPLES(ftello(fs->f)); +} + +static const struct ast_format siren7_f = { + .name = "siren7", + .exts = "siren7", + .format = AST_FORMAT_SIREN7, + .write = siren7write, + .seek = siren7seek, + .trunc = siren7trunc, + .tell = siren7tell, + .read = siren7read, + .buf_size = BUF_SIZE + AST_FRIENDLY_OFFSET, +}; + +static int load_module(void) +{ + if (ast_format_register(&siren7_f)) + return AST_MODULE_LOAD_DECLINE; + + return AST_MODULE_LOAD_SUCCESS; +} + +static int unload_module(void) +{ + return ast_format_unregister(siren7_f.name); +} + +AST_MODULE_INFO_STANDARD(ASTERISK_GPL_KEY, "ITU G.722.1 (Siren7, licensed from Polycom)"); |