diff options
author | kpfleming <kpfleming@f38db490-d61c-443f-a65b-d21fe96a405b> | 2005-07-20 00:53:21 +0000 |
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committer | kpfleming <kpfleming@f38db490-d61c-443f-a65b-d21fe96a405b> | 2005-07-20 00:53:21 +0000 |
commit | 000130b1d3cd30b4e007969098fbda821d28d89f (patch) | |
tree | 56647b2721ff9f4f4491bfdc2b945618860a2f25 /slinfactory.c | |
parent | 7428435033ff215dbc6b157a696e604d0bad9c61 (diff) |
add slinfactory object, and change app_chanspy to use it (bug #4724)
git-svn-id: http://svn.digium.com/svn/asterisk/trunk@6177 f38db490-d61c-443f-a65b-d21fe96a405b
Diffstat (limited to 'slinfactory.c')
-rwxr-xr-x | slinfactory.c | 152 |
1 files changed, 152 insertions, 0 deletions
diff --git a/slinfactory.c b/slinfactory.c new file mode 100755 index 000000000..f6abe7bb1 --- /dev/null +++ b/slinfactory.c @@ -0,0 +1,152 @@ +/* + * Asterisk -- A telephony toolkit for Linux. + * + * A machine to gather up arbitrary frames and convert them + * to raw slinear on demand. + * + * Copyright (C) 2005, Anthony Minessale II. + * + * Anthony Minessale <anthmct@yahoo.com> + * + * This program is free software, distributed under the terms of + * the GNU General Public License + */ + +#include "asterisk/slinfactory.h" +#include "asterisk/file.h" +#include "asterisk/logger.h" +#include "asterisk/channel.h" +#include "asterisk/pbx.h" +#include "asterisk/module.h" +#include "asterisk/lock.h" +#include "asterisk/cli.h" +#include "asterisk/options.h" +#include "asterisk/app.h" +#include "asterisk/translate.h" + + +void ast_slinfactory_init(struct ast_slinfactory *sf) +{ + memset(sf, 0, sizeof(struct ast_slinfactory)); + sf->offset = sf->hold; + sf->queue = NULL; +} + +void ast_slinfactory_destroy(struct ast_slinfactory *sf) +{ + struct ast_frame *f; + + if (sf->trans) { + ast_translator_free_path(sf->trans); + sf->trans = NULL; + } + + while((f = sf->queue)) { + sf->queue = f->next; + ast_frfree(f); + } +} + +int ast_slinfactory_feed(struct ast_slinfactory *sf, struct ast_frame *f) +{ + struct ast_frame *frame, *frame_ptr; + + if (!f) { + return 0; + } + + if (f->subclass != AST_FORMAT_SLINEAR) { + if (sf->trans && f->subclass != sf->format) { + ast_translator_free_path(sf->trans); + sf->trans = NULL; + } + if (!sf->trans) { + if ((sf->trans = ast_translator_build_path(AST_FORMAT_SLINEAR, f->subclass)) == NULL) { + ast_log(LOG_WARNING, "Cannot build a path from %s to slin\n", ast_getformatname(f->subclass)); + return 0; + } else { + sf->format = f->subclass; + } + } + } + + if (sf->trans) { + frame = ast_translate(sf->trans, f, 0); + } else { + frame = ast_frdup(f); + } + + if (frame) { + int x = 0; + for (frame_ptr = sf->queue; frame_ptr && frame_ptr->next; frame_ptr=frame_ptr->next) { + x++; + } + if (frame_ptr) { + frame_ptr->next = frame; + } else { + sf->queue = frame; + } + frame->next = NULL; + sf->size += frame->datalen; + return x; + } + + return 0; + +} + +int ast_slinfactory_read(struct ast_slinfactory *sf, short *buf, size_t bytes) +{ + struct ast_frame *frame_ptr; + int sofar = 0, ineed, remain; + short *frame_data, *offset = buf; + + while (sofar < bytes) { + ineed = bytes - sofar; + + if (sf->holdlen) { + if ((sofar + sf->holdlen) <= ineed) { + memcpy(offset, sf->hold, sf->holdlen); + sofar += sf->holdlen; + offset += (sf->holdlen / sizeof(short)); + sf->holdlen = 0; + sf->offset = sf->hold; + } else { + remain = sf->holdlen - ineed; + memcpy(offset, sf->offset, ineed); + sofar += ineed; + sf->offset += (ineed / sizeof(short)); + sf->holdlen = remain; + } + continue; + } + + if ((frame_ptr = sf->queue)) { + sf->queue = frame_ptr->next; + frame_data = frame_ptr->data; + + if ((sofar + frame_ptr->datalen) <= ineed) { + memcpy(offset, frame_data, frame_ptr->datalen); + sofar += frame_ptr->datalen; + offset += (frame_ptr->datalen / sizeof(short)); + } else { + remain = frame_ptr->datalen - ineed; + memcpy(offset, frame_data, ineed); + sofar += ineed; + frame_data += (ineed / sizeof(short)); + memcpy(sf->hold, frame_data, remain); + sf->holdlen = remain; + } + ast_frfree(frame_ptr); + } else { + break; + } + } + + sf->size -= sofar; + return sofar; +} + + + + |