diff options
author | automerge <automerge@f38db490-d61c-443f-a65b-d21fe96a405b> | 2007-01-22 20:27:07 +0000 |
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committer | automerge <automerge@f38db490-d61c-443f-a65b-d21fe96a405b> | 2007-01-22 20:27:07 +0000 |
commit | ae3048fa10828dc3277bfc8d3aa040daf2b076b8 (patch) | |
tree | e21758e92cc94eda02d9712ac572b476c9d12ec7 /codecs | |
parent | cfc369cefa6309a56a2eb9f42ab1d72910b2aa95 (diff) |
automerge commit
git-svn-id: http://svn.digium.com/svn/asterisk/branches/1.2-netsec@51455 f38db490-d61c-443f-a65b-d21fe96a405b
Diffstat (limited to 'codecs')
-rw-r--r-- | codecs/Makefile | 13 | ||||
-rw-r--r-- | codecs/codec_zap.c | 928 |
2 files changed, 941 insertions, 0 deletions
diff --git a/codecs/Makefile b/codecs/Makefile index d1feb8a54..8fa454109 100644 --- a/codecs/Makefile +++ b/codecs/Makefile @@ -28,6 +28,19 @@ ifneq ($(wildcard g723.1b/coder2.c),) LIBG723B=g723.1b/libg723b.a endif +ifndef WITHOUT_ZAPTEL +ifneq ($(wildcard $(CROSS_COMPILE_TARGET)/usr/include/linux/zaptel.h)$(wildcard $(CROSS_COMPILE_TARGET)/usr/local/include/zaptel.h)$(wildcard $(CROSS_COMPILE_TARGET)/usr/pkg/include/zaptel.h),) + ifeq (${OSARCH},NetBSD) + SOLINK+=-L$(CROSS_COMPILE_TARGET)/usr/pkg/lib + endif + ifeq (${OSARCH},FreeBSD) + SOLINK+=-L$(CROSS_COMPILE_TARGET)/usr/local/lib + endif + CODECS+=codec_zap.so +endif +endif # WITHOUT_ZAPTEL + + UI_SPEEX=$(wildcard $(CROSS_COMPILE_TARGET)/usr/include/speex.h) UIS_SPEEX=$(wildcard $(CROSS_COMPILE_TARGET)/usr/include/speex/speex.h) ULI_SPEEX=$(wildcard $(CROSS_COMPILE_TARGET)/usr/local/include/speex.h) diff --git a/codecs/codec_zap.c b/codecs/codec_zap.c new file mode 100644 index 000000000..5f9fe939f --- /dev/null +++ b/codecs/codec_zap.c @@ -0,0 +1,928 @@ +/* + * Asterisk -- An open source telephony toolkit. + * + * Zaptel native transcoding support + * + * Copyright (C) 1999 - 2006, Digium, Inc. + * + * Mark Spencer <markster@digium.com> + * Kevin P. Fleming <kpfleming@digium.com> + * + * See http://www.asterisk.org for more information about + * the Asterisk project. Please do not directly contact + * any of the maintainers of this project for assistance; + * the project provides a web site, mailing lists and IRC + * channels for your use. + * + * This program is free software, distributed under the terms of + * the GNU General Public License Version 2. See the LICENSE file + * at the top of the source tree. + */ + +/*! \file + * + * \brief Translate between various formats natively through Zaptel transcoding + * + * \ingroup codecs + */ + +#include "asterisk.h" + +ASTERISK_FILE_VERSION(__FILE__, "$Revision$") + +#include <fcntl.h> +#include <stdlib.h> +#include <unistd.h> +#include <netinet/in.h> +#include <string.h> +#include <stdio.h> +#include <sys/ioctl.h> +#include <errno.h> +#include <sys/mman.h> +#include <zaptel/zaptel.h> + +#include "asterisk/lock.h" +#include "asterisk/translate.h" +#include "asterisk/config.h" +#include "asterisk/options.h" +#include "asterisk/module.h" +#include "asterisk/cli.h" +#include "asterisk/logger.h" +#include "asterisk/channel.h" +#include "asterisk/utils.h" +#include "asterisk/linkedlists.h" + +#define BUFFER_SAMPLES 8000 + +static unsigned int global_useplc = 0; +static int cardsmode = 0; + +static int totalchannels = 0; +static int complexinuse = 0; +static int simpleinuse = 0; +static int localusecnt = 0; +AST_MUTEX_DEFINE_STATIC(channelcount); + +static char *tdesc = "Generic Zaptel Transcoder Codec Translator"; + +static char show_transcoder_usage[] = +"Usage: show transcoder\n" +" Displays transcoder utilization.\n"; + +static int show_transcoder(int fd, int argc, char **argv); + +static struct ast_cli_entry transcoder_cli[] = { + { { "show", "transcoder", NULL}, + show_transcoder, "Displays transcoder utilization.", + show_transcoder_usage} +}; + +struct format_map { + unsigned int map[32][32]; +}; + +static struct format_map global_format_map = { { { 0 } } }; + +struct translator { + struct ast_translator t; + AST_LIST_ENTRY(translator) entry; +}; + +static AST_LIST_HEAD_STATIC(zap_translators, translator); + +struct ast_translator_pvt { + int fd; + int fake; + int inuse; + int samples; + int dstfmt; + int srcfmt; +#ifdef DEBUG_TRANSCODE + int totalms; + int lasttotalms; +#endif + struct zt_transcode_header *hdr; + struct ast_frame f; +}; + + +static int show_transcoder(int fd, int argc, char **argv) +{ + ast_mutex_lock(&channelcount); + if (!totalchannels) { + ast_cli(fd, "No transcoder card registered\n"); + ast_mutex_unlock(&channelcount); + return RESULT_SUCCESS; + } + if(!cardsmode) + ast_cli(fd, "%d/%d encoders/decoders of %d channels (G.729a / G.723.1 5.3 kbps) are in use.\n",complexinuse, simpleinuse, totalchannels); + else if (cardsmode == 1) + ast_cli(fd, "%d/%d encoders/decoders of %d channels (G.729a) are in use.\n",complexinuse, simpleinuse, totalchannels); + else if (cardsmode == 2) + ast_cli(fd, "%d/%d encoders/decoders of %d channels (G.723.1 5.3 kbps) are in use.\n",complexinuse, simpleinuse, totalchannels); + + ast_mutex_unlock(&channelcount); + return RESULT_SUCCESS; +} + +static int zap_framein(struct ast_translator_pvt *ztp, struct ast_frame *f) +{ + struct zt_transcode_header *hdr = ztp->hdr; + if (!f->subclass) { + /* Fake a return frame for calculation purposes */ + ztp->fake = 2; + ztp->samples = f->samples; + return 0; + } + if(!ztp->inuse) { + ast_mutex_lock(&channelcount); + localusecnt++; + if(ztp->dstfmt == 8 || ztp->dstfmt == 0 ) + complexinuse++; + else + simpleinuse++; + ast_mutex_unlock(&channelcount); + ztp->inuse = 1; + } + if (!hdr->srclen) + /* Copy at front of buffer */ + hdr->srcoffset = 0; + + if (hdr->srclen + f->datalen > sizeof(hdr->srcdata)) { + ast_log(LOG_WARNING, "Out of space for codec translation!\n"); + return -1; + } + + if (hdr->srclen + f->datalen + hdr->srcoffset > sizeof(hdr->srcdata)) { + /* Very unlikely */ + memmove(hdr->srcdata, hdr->srcdata + hdr->srcoffset, hdr->srclen); + hdr->srcoffset = 0; + } + + memcpy(hdr->srcdata + hdr->srcoffset + hdr->srclen, f->data, f->datalen); + hdr->srclen += f->datalen; + ztp->samples += f->samples; + + return -1; +} + +static struct ast_frame *zap_frameout(struct ast_translator_pvt *ztp) +{ + struct zt_transcode_header *hdr = ztp->hdr; + unsigned int x; + + if (ztp->fake == 2) { + ztp->fake = 1; + ztp->f.frametype = AST_FRAME_VOICE; + ztp->f.subclass = 0; + ztp->f.samples = 240; + ztp->f.data = NULL; + ztp->f.offset = 0; + ztp->f.datalen = 0; + ztp->f.mallocd = 0; + ztp->samples = 0; + } else if (ztp->fake == 1) { + return NULL; + } else { + if (hdr->dstlen) { +#ifdef DEBUG_TRANSCODE + ztp->totalms += hdr->dstsamples; + if ((ztp->totalms - ztp->lasttotalms) > 8000) { + ast_verbose("Whee %p, %d (%d to %d)\n", ztp, hdr->dstlen, ztp->lasttotalms, ztp->totalms); + ztp->lasttotalms = ztp->totalms; + } +#endif + ztp->f.frametype = AST_FRAME_VOICE; + ztp->f.subclass = hdr->dstfmt; + ztp->f.samples = hdr->dstsamples; + ztp->f.data = hdr->dstdata + hdr->dstoffset; + ztp->f.offset = hdr->dstoffset; + ztp->f.datalen = hdr->dstlen; + ztp->f.mallocd = 0; + ztp->samples -= ztp->f.samples; + hdr->dstlen = 0; + + } else { + if (hdr->srclen) { + hdr->dstoffset = AST_FRIENDLY_OFFSET; + x = ZT_TCOP_TRANSCODE; + if (ioctl(ztp->fd, ZT_TRANSCODE_OP, &x)) + ast_log(LOG_WARNING, "Failed to transcode: %s\n", strerror(errno)); + } + return NULL; + } + } + + return &ztp->f; +} + +static void zap_destroy(struct ast_translator_pvt *ztp) +{ + unsigned int x; + + x = ZT_TCOP_RELEASE; + if (ioctl(ztp->fd, ZT_TRANSCODE_OP, &x)) + ast_log(LOG_WARNING, "Failed to release transcoder channel: %s\n", strerror(errno)); + + munmap(ztp->hdr, sizeof(*ztp->hdr)); + if(ztp->inuse) { + ast_mutex_lock(&channelcount); + localusecnt--; + if(ztp->dstfmt == 8 || ztp->dstfmt == 0) + complexinuse--; + else + simpleinuse--; + ast_mutex_unlock(&channelcount); + } + close(ztp->fd); +} + +static struct ast_translator_pvt *zap_new_alawtog723(void) +{ + /* Request translation through zap if possible */ + int fd; + unsigned int x = ZT_TCOP_RESET; + struct ast_translator_pvt *ztp; + struct zt_transcode_header *hdr; + int flags; + + ztp = calloc(1,sizeof(struct ast_translator_pvt)); + if(!ztp) { + ast_log(LOG_ERROR, "Could not allocate ztp structure.\n"); + return NULL; + } + ztp->dstfmt = 0; + ztp->srcfmt = 3; + + if ((fd = open("/dev/zap/transcode", O_RDWR)) < 0) + return NULL; + flags = fcntl(fd, F_GETFL); + if (flags > - 1) { + if (fcntl(fd, F_SETFL, flags | O_NONBLOCK)) + ast_log(LOG_WARNING, "Could not set non-block mode!\n"); + } + + + if ((hdr = mmap(NULL, sizeof(*hdr), PROT_READ|PROT_WRITE, MAP_SHARED, fd, 0)) == MAP_FAILED) { + ast_log(LOG_ERROR, "Memory Map failed for transcoding (%s)\n", strerror(errno)); + close(fd); + + return NULL; + } + + if (hdr->magic != ZT_TRANSCODE_MAGIC) { + ast_log(LOG_ERROR, "Transcoder header (%08x) wasn't magic. Abandoning\n", hdr->magic); + munmap(hdr, sizeof(*hdr)); + close(fd); + + return NULL; + } + + hdr->srcfmt = (1 << ztp->srcfmt); + hdr->dstfmt = (1 << ztp->dstfmt); + if (ioctl(fd, ZT_TRANSCODE_OP, &x)) { + ast_log(LOG_ERROR, "Unable to attach transcoder: %s\n", strerror(errno)); + munmap(hdr, sizeof(*hdr)); + close(fd); + + return NULL; + } + + ztp->fd = fd; + ztp->hdr = hdr; + + return (struct ast_translator_pvt *) ztp; +} + +static struct ast_translator_pvt *zap_new_ulawtog723(void) +{ + /* Request translation through zap if possible */ + int fd; + unsigned int x = ZT_TCOP_RESET; + struct ast_translator_pvt *ztp; + struct zt_transcode_header *hdr; + int flags; + + ztp = calloc(1,sizeof(struct ast_translator_pvt)); + if(!ztp) { + ast_log(LOG_ERROR, "Could not allocate ztp structure.\n"); + return NULL; + } + ztp->dstfmt = 0; + ztp->srcfmt = 2; + + if ((fd = open("/dev/zap/transcode", O_RDWR)) < 0) + return NULL; + flags = fcntl(fd, F_GETFL); + if (flags > - 1) { + if (fcntl(fd, F_SETFL, flags | O_NONBLOCK)) + ast_log(LOG_WARNING, "Could not set non-block mode!\n"); + } + + + if ((hdr = mmap(NULL, sizeof(*hdr), PROT_READ|PROT_WRITE, MAP_SHARED, fd, 0)) == MAP_FAILED) { + ast_log(LOG_ERROR, "Memory Map failed for transcoding (%s)\n", strerror(errno)); + close(fd); + + return NULL; + } + + if (hdr->magic != ZT_TRANSCODE_MAGIC) { + ast_log(LOG_ERROR, "Transcoder header (%08x) wasn't magic. Abandoning\n", hdr->magic); + munmap(hdr, sizeof(*hdr)); + close(fd); + + return NULL; + } + + hdr->srcfmt = (1 << ztp->srcfmt); + hdr->dstfmt = (1 << ztp->dstfmt); + if (ioctl(fd, ZT_TRANSCODE_OP, &x)) { + ast_log(LOG_ERROR, "Unable to attach transcoder: %s\n", strerror(errno)); + munmap(hdr, sizeof(*hdr)); + close(fd); + + return NULL; + } + + ztp->fd = fd; + ztp->hdr = hdr; + + return (struct ast_translator_pvt *) ztp; +} + +static struct ast_translator_pvt *zap_new_g723toalaw(void) +{ + /* Request translation through zap if possible */ + int fd; + unsigned int x = ZT_TCOP_RESET; + struct ast_translator_pvt *ztp; + struct zt_transcode_header *hdr; + int flags; + + ztp = calloc(1,sizeof(struct ast_translator_pvt)); + if(!ztp) { + ast_log(LOG_ERROR, "Could not allocate ztp structure.\n"); + return NULL; + } + ztp->dstfmt = 3; + ztp->srcfmt = 0; + + if ((fd = open("/dev/zap/transcode", O_RDWR)) < 0) + return NULL; + flags = fcntl(fd, F_GETFL); + if (flags > - 1) { + if (fcntl(fd, F_SETFL, flags | O_NONBLOCK)) + ast_log(LOG_WARNING, "Could not set non-block mode!\n"); + } + + + if ((hdr = mmap(NULL, sizeof(*hdr), PROT_READ|PROT_WRITE, MAP_SHARED, fd, 0)) == MAP_FAILED) { + ast_log(LOG_ERROR, "Memory Map failed for transcoding (%s)\n", strerror(errno)); + close(fd); + + return NULL; + } + + if (hdr->magic != ZT_TRANSCODE_MAGIC) { + ast_log(LOG_ERROR, "Transcoder header (%08x) wasn't magic. Abandoning\n", hdr->magic); + munmap(hdr, sizeof(*hdr)); + close(fd); + + return NULL; + } + + hdr->srcfmt = (1 << ztp->srcfmt); + hdr->dstfmt = (1 << ztp->dstfmt); + if (ioctl(fd, ZT_TRANSCODE_OP, &x)) { + ast_log(LOG_ERROR, "Unable to attach transcoder: %s\n", strerror(errno)); + munmap(hdr, sizeof(*hdr)); + close(fd); + + return NULL; + } + + ztp->fd = fd; + ztp->hdr = hdr; + + return (struct ast_translator_pvt *) ztp; +} + +static struct ast_translator_pvt *zap_new_g723toulaw(void) +{ + /* Request translation through zap if possible */ + int fd; + unsigned int x = ZT_TCOP_RESET; + struct ast_translator_pvt *ztp; + struct zt_transcode_header *hdr; + int flags; + + ztp = calloc(1,sizeof(struct ast_translator_pvt)); + if(!ztp) { + ast_log(LOG_ERROR, "Could not allocate ztp structure.\n"); + return NULL; + } + ztp->dstfmt = 2; + ztp->srcfmt = 0; + + if ((fd = open("/dev/zap/transcode", O_RDWR)) < 0) + return NULL; + flags = fcntl(fd, F_GETFL); + if (flags > - 1) { + if (fcntl(fd, F_SETFL, flags | O_NONBLOCK)) + ast_log(LOG_WARNING, "Could not set non-block mode!\n"); + } + + + if ((hdr = mmap(NULL, sizeof(*hdr), PROT_READ|PROT_WRITE, MAP_SHARED, fd, 0)) == MAP_FAILED) { + ast_log(LOG_ERROR, "Memory Map failed for transcoding (%s)\n", strerror(errno)); + close(fd); + + return NULL; + } + + if (hdr->magic != ZT_TRANSCODE_MAGIC) { + ast_log(LOG_ERROR, "Transcoder header (%08x) wasn't magic. Abandoning\n", hdr->magic); + munmap(hdr, sizeof(*hdr)); + close(fd); + + return NULL; + } + + hdr->srcfmt = (1 << ztp->srcfmt); + hdr->dstfmt = (1 << ztp->dstfmt); + if (ioctl(fd, ZT_TRANSCODE_OP, &x)) { + ast_log(LOG_ERROR, "Unable to attach transcoder: %s\n", strerror(errno)); + munmap(hdr, sizeof(*hdr)); + close(fd); + + return NULL; + } + + ztp->fd = fd; + ztp->hdr = hdr; + + return (struct ast_translator_pvt *) ztp; +} + +static struct ast_translator_pvt *zap_new_alawtog729(void) +{ + /* Request translation through zap if possible */ + int fd; + unsigned int x = ZT_TCOP_RESET; + struct ast_translator_pvt *ztp; + struct zt_transcode_header *hdr; + int flags; + + ztp = calloc(1,sizeof(struct ast_translator_pvt)); + if(!ztp) { + ast_log(LOG_ERROR, "Could not allocate ztp structure.\n"); + return NULL; + } + ztp->dstfmt = 8; + ztp->srcfmt = 3; + + if ((fd = open("/dev/zap/transcode", O_RDWR)) < 0) + return NULL; + flags = fcntl(fd, F_GETFL); + if (flags > - 1) { + if (fcntl(fd, F_SETFL, flags | O_NONBLOCK)) + ast_log(LOG_WARNING, "Could not set non-block mode!\n"); + } + + + if ((hdr = mmap(NULL, sizeof(*hdr), PROT_READ|PROT_WRITE, MAP_SHARED, fd, 0)) == MAP_FAILED) { + ast_log(LOG_ERROR, "Memory Map failed for transcoding (%s)\n", strerror(errno)); + close(fd); + + return NULL; + } + + if (hdr->magic != ZT_TRANSCODE_MAGIC) { + ast_log(LOG_ERROR, "Transcoder header (%08x) wasn't magic. Abandoning\n", hdr->magic); + munmap(hdr, sizeof(*hdr)); + close(fd); + + return NULL; + } + + hdr->srcfmt = (1 << ztp->srcfmt); + hdr->dstfmt = (1 << ztp->dstfmt); + if (ioctl(fd, ZT_TRANSCODE_OP, &x)) { + ast_log(LOG_ERROR, "Unable to attach transcoder: %s\n", strerror(errno)); + munmap(hdr, sizeof(*hdr)); + close(fd); + + return NULL; + } + + ztp->fd = fd; + ztp->hdr = hdr; + + return (struct ast_translator_pvt *) ztp; +} + +static struct ast_translator_pvt *zap_new_ulawtog729(void) +{ + /* Request translation through zap if possible */ + int fd; + unsigned int x = ZT_TCOP_RESET; + struct ast_translator_pvt *ztp; + struct zt_transcode_header *hdr; + int flags; + + ztp = calloc(1,sizeof(struct ast_translator_pvt)); + if(!ztp) { + ast_log(LOG_ERROR, "Could not allocate ztp structure.\n"); + return NULL; + } + ztp->dstfmt = 8; + ztp->srcfmt = 2; + + if ((fd = open("/dev/zap/transcode", O_RDWR)) < 0) + return NULL; + flags = fcntl(fd, F_GETFL); + if (flags > - 1) { + if (fcntl(fd, F_SETFL, flags | O_NONBLOCK)) + ast_log(LOG_WARNING, "Could not set non-block mode!\n"); + } + + + if ((hdr = mmap(NULL, sizeof(*hdr), PROT_READ|PROT_WRITE, MAP_SHARED, fd, 0)) == MAP_FAILED) { + ast_log(LOG_ERROR, "Memory Map failed for transcoding (%s)\n", strerror(errno)); + close(fd); + + return NULL; + } + + if (hdr->magic != ZT_TRANSCODE_MAGIC) { + ast_log(LOG_ERROR, "Transcoder header (%08x) wasn't magic. Abandoning\n", hdr->magic); + munmap(hdr, sizeof(*hdr)); + close(fd); + + return NULL; + } + + hdr->srcfmt = (1 << ztp->srcfmt); + hdr->dstfmt = (1 << ztp->dstfmt); + if (ioctl(fd, ZT_TRANSCODE_OP, &x)) { + ast_log(LOG_ERROR, "Unable to attach transcoder: %s\n", strerror(errno)); + munmap(hdr, sizeof(*hdr)); + close(fd); + + return NULL; + } + + ztp->fd = fd; + ztp->hdr = hdr; + + return (struct ast_translator_pvt *) ztp; +} + +static struct ast_translator_pvt *zap_new_g729toalaw(void) +{ + /* Request translation through zap if possible */ + int fd; + unsigned int x = ZT_TCOP_RESET; + struct ast_translator_pvt *ztp; + struct zt_transcode_header *hdr; + int flags; + + ztp = calloc(1,sizeof(struct ast_translator_pvt)); + if(!ztp) { + ast_log(LOG_ERROR, "Could not allocate ztp structure.\n"); + return NULL; + } + ztp->dstfmt = 3; + ztp->srcfmt = 8; + + if ((fd = open("/dev/zap/transcode", O_RDWR)) < 0) + return NULL; + flags = fcntl(fd, F_GETFL); + if (flags > - 1) { + if (fcntl(fd, F_SETFL, flags | O_NONBLOCK)) + ast_log(LOG_WARNING, "Could not set non-block mode!\n"); + } + + + if ((hdr = mmap(NULL, sizeof(*hdr), PROT_READ|PROT_WRITE, MAP_SHARED, fd, 0)) == MAP_FAILED) { + ast_log(LOG_ERROR, "Memory Map failed for transcoding (%s)\n", strerror(errno)); + close(fd); + + return NULL; + } + + if (hdr->magic != ZT_TRANSCODE_MAGIC) { + ast_log(LOG_ERROR, "Transcoder header (%08x) wasn't magic. Abandoning\n", hdr->magic); + munmap(hdr, sizeof(*hdr)); + close(fd); + + return NULL; + } + + hdr->srcfmt = (1 << ztp->srcfmt); + hdr->dstfmt = (1 << ztp->dstfmt); + if (ioctl(fd, ZT_TRANSCODE_OP, &x)) { + ast_log(LOG_ERROR, "Unable to attach transcoder: %s\n", strerror(errno)); + munmap(hdr, sizeof(*hdr)); + close(fd); + + return NULL; + } + + ztp->fd = fd; + ztp->hdr = hdr; + + return (struct ast_translator_pvt *) ztp; +} + +static struct ast_translator_pvt *zap_new_g729toulaw(void) +{ + /* Request translation through zap if possible */ + int fd; + unsigned int x = ZT_TCOP_RESET; + struct ast_translator_pvt *ztp; + struct zt_transcode_header *hdr; + int flags; + + ztp = calloc(1,sizeof(struct ast_translator_pvt)); + if(!ztp) { + ast_log(LOG_ERROR, "Could not allocate ztp structure.\n"); + return NULL; + } + ztp->dstfmt = 2; + ztp->srcfmt = 8; + + if ((fd = open("/dev/zap/transcode", O_RDWR)) < 0) + return NULL; + flags = fcntl(fd, F_GETFL); + if (flags > - 1) { + if (fcntl(fd, F_SETFL, flags | O_NONBLOCK)) + ast_log(LOG_WARNING, "Could not set non-block mode!\n"); + } + + + if ((hdr = mmap(NULL, sizeof(*hdr), PROT_READ|PROT_WRITE, MAP_SHARED, fd, 0)) == MAP_FAILED) { + ast_log(LOG_ERROR, "Memory Map failed for transcoding (%s)\n", strerror(errno)); + close(fd); + + return NULL; + } + + if (hdr->magic != ZT_TRANSCODE_MAGIC) { + ast_log(LOG_ERROR, "Transcoder header (%08x) wasn't magic. Abandoning\n", hdr->magic); + munmap(hdr, sizeof(*hdr)); + close(fd); + + return NULL; + } + + hdr->srcfmt = (1 << ztp->srcfmt); + hdr->dstfmt = (1 << ztp->dstfmt); + if (ioctl(fd, ZT_TRANSCODE_OP, &x)) { + ast_log(LOG_ERROR, "Unable to attach transcoder: %s\n", strerror(errno)); + munmap(hdr, sizeof(*hdr)); + close(fd); + + return NULL; + } + + ztp->fd = fd; + ztp->hdr = hdr; + + return (struct ast_translator_pvt *) ztp; +} + +static struct ast_frame *fakesrc_sample(void) +{ + /* Don't bother really trying to test hardware ones. */ + static struct ast_frame f = { + .frametype = AST_FRAME_VOICE, + .samples = 240, + .src = __PRETTY_FUNCTION__ + }; + + return &f; +} + +static int register_translator(int dst, int src) +{ + struct translator *zt; + int res; + + if (!(zt = calloc(1, sizeof(*zt)))) { + ast_log(LOG_ERROR, "Could not allocate translator\n"); + return -1; + } + if (!((cardsmode == 1 && (dst == 8 || src == 8)) || (cardsmode == 2 && (dst == 0 || src == 0)) || (cardsmode == 0))) + return -1; + snprintf((char *) (zt->t.name), sizeof(zt->t.name), "zap%sto%s", + ast_getformatname((1 << src)), ast_getformatname((1 << dst))); + + if(src == 8 && dst == 2) /* G.729 to Ulaw */ + zt->t.newpvt = zap_new_g729toulaw; + else if(src == 8 && dst == 3) /* G.729 to Alaw */ + zt->t.newpvt = zap_new_g729toalaw; + else if(src == 2 && dst == 8) /* Ulaw to G.729 */ + zt->t.newpvt = zap_new_ulawtog729; + else if(src == 3 && dst == 8) /* Alaw to G.729 */ + zt->t.newpvt = zap_new_alawtog729; + else if(src == 0 && dst == 2) /* G.723 to Ulaw */ + zt->t.newpvt = zap_new_g723toulaw; + else if(src == 0 && dst == 3) /* G.723 to Alaw */ + zt->t.newpvt = zap_new_g723toalaw; + else if(src == 2 && dst == 0) /* Ulaw to G.723 */ + zt->t.newpvt = zap_new_ulawtog723; + else if(src == 3 && dst == 0) /* Alaw to G.723 */ + zt->t.newpvt = zap_new_alawtog723; + + zt->t.frameout = zap_frameout; + zt->t.destroy = zap_destroy; + zt->t.sample = fakesrc_sample; + zt->t.framein = zap_framein; + zt->t.srcfmt = (1 << src); + zt->t.dstfmt = (1 << dst); + if ((res = ast_register_translator(&zt->t))) { + free(zt); + return -1; + } + + AST_LIST_LOCK(&zap_translators); + AST_LIST_INSERT_HEAD(&zap_translators, zt, entry); + AST_LIST_UNLOCK(&zap_translators); + + global_format_map.map[dst][src] = 1; + + return res; +} + +static void drop_translator(int dst, int src) +{ + struct translator *cur; + + AST_LIST_LOCK(&zap_translators); + AST_LIST_TRAVERSE_SAFE_BEGIN(&zap_translators, cur, entry) { + if (cur->t.srcfmt != src) + continue; + + if (cur->t.dstfmt != dst) + continue; + + AST_LIST_REMOVE_CURRENT(&zap_translators, entry); + ast_unregister_translator(&cur->t); + free(cur); + global_format_map.map[dst][src] = 0; + break; + } + AST_LIST_TRAVERSE_SAFE_END; + AST_LIST_UNLOCK(&zap_translators); +} + +static void unregister_translators(void) +{ + struct translator *cur; + + AST_LIST_LOCK(&zap_translators); + while ((cur = AST_LIST_REMOVE_HEAD(&zap_translators, entry))) { + ast_unregister_translator(&cur->t); + free(cur); + } + AST_LIST_UNLOCK(&zap_translators); +} + +static void parse_config(void) +{ + struct ast_variable *var; + struct ast_config *cfg = ast_config_load("codecs.conf"); + cardsmode = 0; + + if (!cfg) + return; + + for (var = ast_variable_browse(cfg, "plc"); var; var = var->next) { + if (!strcasecmp(var->name, "genericplc")) { + global_useplc = ast_true(var->value); + if (option_verbose > 2) + ast_verbose(VERBOSE_PREFIX_3 "codec_zap: %susing generic PLC\n", global_useplc ? "" : "not "); + } + } + for (var = ast_variable_browse(cfg, "transcoder_card"); var; var = var->next) { + if (!strcasecmp(var->name, "mode")) { + if(strstr(var->value, "g729")) + cardsmode = 1; + else if(strstr(var->value, "g723")) + cardsmode = 2; + else if(strstr(var->value, "mixed")) + cardsmode = 0; + } + } + + ast_config_destroy(cfg); +} + +static int build_translators(struct format_map *map, unsigned int dstfmts, unsigned int srcfmts) +{ + unsigned int src, dst; + + for (src = 0; src < 32; src++) { + for (dst = 0; dst < 32; dst++) { + if (!(srcfmts & (1<< src))) + continue; + + if (!(dstfmts & (1 << dst))) + continue; + + if (global_format_map.map[dst][src]) + continue; + + if (!register_translator(dst, src)) + map->map[dst][src] = 1; + else + return 0; + } + } + return 1; +} + +static int find_transcoders(void) +{ + struct zt_transcode_info info = { 0, }; + struct format_map map = { { { 0 } } }; + int fd, res; + unsigned int x, y; + + info.op = ZT_TCOP_GETINFO; + if ((fd = open("/dev/zap/transcode", O_RDWR)) < 0) { + ast_log(LOG_NOTICE, "No Zaptel transcoder support!\n"); + return 0; + } + for (info.tcnum = 0; !(res = ioctl(fd, ZT_TRANSCODE_OP, &info)); info.tcnum++) { + if (option_verbose > 1) + ast_verbose(VERBOSE_PREFIX_2 "Found transcoder '%s'.\n", info.name); + + if(build_translators(&map, info.dstfmts, info.srcfmts)) { + ast_mutex_lock(&channelcount); + totalchannels += info.numchannels; + ast_mutex_unlock(&channelcount); + } + } + close(fd); + + if (!info.tcnum && (option_verbose > 1)) + ast_verbose(VERBOSE_PREFIX_2 "No hardware transcoders found.\n"); + + for (x = 0; x < 32; x++) { + for (y = 0; y < 32; y++) { + if (!map.map[x][y] && global_format_map.map[x][y]) + drop_translator(x, y); + } + } + ast_mutex_lock(&channelcount); + totalchannels = totalchannels/2; + ast_mutex_unlock(&channelcount); + return 0; +} + +int reload(void) +{ + parse_config(); + find_transcoders(); + + return 0; +} + +int unload_module(void) +{ + if(!localusecnt) + return -1; + unregister_translators(); + ast_cli_unregister_multiple(transcoder_cli, sizeof(transcoder_cli) / sizeof(struct ast_cli_entry)); + return 0; +} + +int load_module(void) +{ + ast_mutex_init(&channelcount); + parse_config(); + + find_transcoders(); + ast_cli_register_multiple(transcoder_cli, sizeof(transcoder_cli) / sizeof(struct ast_cli_entry)); + return 0; +} + +char *description(void) +{ + return tdesc; +} + +int usecount(void) +{ + int res; + STANDARD_USECOUNT(res); + return res; +} + +char *key() +{ + return ASTERISK_GPL_KEY; +} |