Merge "res_pjsip: Implement additional SIP RFCs for Google Voice trunk compatability"
[asterisk/asterisk.git] / formats / format_sln.c
index 3e4d2e0..80d3484 100644 (file)
 
 /*! \file
  *
- * \brief RAW SLINEAR Format
- * \arg File name extensions: sln, raw
+ * \brief RAW SLINEAR Formats
  * \ingroup formats
  */
-#include <unistd.h>
-#include <netinet/in.h>
-#include <arpa/inet.h>
-#include <stdlib.h>
-#include <sys/time.h>
-#include <stdio.h>
-#include <errno.h>
-#include <string.h>
 
-#include "asterisk.h"
+/*** MODULEINFO
+       <support_level>core</support_level>
+ ***/
 
-ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
+#include "asterisk.h"
 
-#include "asterisk/lock.h"
-#include "asterisk/channel.h"
-#include "asterisk/file.h"
-#include "asterisk/logger.h"
-#include "asterisk/sched.h"
+#include "asterisk/mod_format.h"
 #include "asterisk/module.h"
 #include "asterisk/endian.h"
+#include "asterisk/format_cache.h"
 
-#define BUF_SIZE       320             /* 320 bytes, 160 samples */
-#define        SLIN_SAMPLES    160
-
-static struct ast_frame *slinear_read(struct ast_filestream *s, int *whennext)
+static struct ast_frame *generic_read(struct ast_filestream *s, int *whennext, unsigned int buf_size)
 {
-       int res;
-       /* Send a frame from the file to the appropriate channel */
+       size_t res;
 
-       s->fr.frametype = AST_FRAME_VOICE;
-       s->fr.subclass = AST_FORMAT_SLINEAR;
-       s->fr.mallocd = 0;
-       AST_FRAME_SET_BUFFER(&s->fr, s->buf, AST_FRIENDLY_OFFSET, BUF_SIZE);
-       if ((res = fread(s->fr.data, 1, s->fr.datalen, s->f)) < 1) {
-               if (res)
-                       ast_log(LOG_WARNING, "Short read (%d) (%s)!\n", res, strerror(errno));
+       /* Send a frame from the file to the appropriate channel */
+       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)) < 1) {
+               if (res) {
+                       ast_log(LOG_WARNING, "Short read of %s data (expected %d bytes, read %zu): %s\n",
+                                       ast_format_get_name(s->fr.subclass.format), s->fr.datalen, res,
+                                       strerror(errno));
+               }
                return NULL;
        }
        *whennext = s->fr.samples = res/2;
@@ -68,15 +54,13 @@ static struct ast_frame *slinear_read(struct ast_filestream *s, int *whennext)
 static int slinear_write(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_SLINEAR) {
-               ast_log(LOG_WARNING, "Asked to write non-slinear frame (%d)!\n", f->subclass);
-               return -1;
+
+       /* Don't try to write an interpolated frame */
+       if (f->datalen == 0) {
+               return 0;
        }
-       if ((res = fwrite(f->data, 1, f->datalen, fs->f)) != f->datalen) {
+
+       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;
        }
@@ -85,13 +69,25 @@ static int slinear_write(struct ast_filestream *fs, struct ast_frame *f)
 
 static int slinear_seek(struct ast_filestream *fs, off_t sample_offset, int whence)
 {
-       off_t offset=0,min,cur,max;
+       off_t offset=0, min = 0, cur, max;
 
-       min = 0;
        sample_offset <<= 1;
-       cur = ftello(fs->f);
-       fseeko(fs->f, 0, SEEK_END);
-       max = ftello(fs->f);
+
+       if ((cur = ftello(fs->f)) < 0) {
+               ast_log(AST_LOG_WARNING, "Unable to determine current position in sln filestream %p: %s\n", fs, strerror(errno));
+               return -1;
+       }
+
+       if (fseeko(fs->f, 0, SEEK_END) < 0) {
+               ast_log(AST_LOG_WARNING, "Unable to seek to end of sln filestream %p: %s\n", fs, strerror(errno));
+               return -1;
+       }
+
+       if ((max = ftello(fs->f)) < 0) {
+               ast_log(AST_LOG_WARNING, "Unable to determine max position in sln filestream %p: %s\n", fs, strerror(errno));
+               return -1;
+       }
+
        if (whence == SEEK_SET)
                offset = sample_offset;
        else if (whence == SEEK_CUR || whence == SEEK_FORCECUR)
@@ -108,7 +104,19 @@ static int slinear_seek(struct ast_filestream *fs, off_t sample_offset, int when
 
 static int slinear_trunc(struct ast_filestream *fs)
 {
-       return ftruncate(fileno(fs->f), ftello(fs->f));
+       int fd;
+       off_t cur;
+
+       if ((fd = fileno(fs->f)) < 0) {
+               ast_log(AST_LOG_WARNING, "Unable to determine file descriptor for sln filestream %p: %s\n", fs, strerror(errno));
+               return -1;
+       }
+       if ((cur = ftello(fs->f)) < 0) {
+               ast_log(AST_LOG_WARNING, "Unable to determine current position in sln filestream %p: %s\n", fs, strerror(errno));
+               return -1;
+       }
+       /* Truncate file to current length */
+       return ftruncate(fd, cur);
 }
 
 static off_t slinear_tell(struct ast_filestream *fs)
@@ -116,42 +124,166 @@ static off_t slinear_tell(struct ast_filestream *fs)
        return ftello(fs->f) / 2;
 }
 
-static struct ast_format_lock me = { .usecnt = -1 };
-
-static const struct ast_format slin_f = {
+static struct ast_frame *slinear_read(struct ast_filestream *s, int *whennext){return generic_read(s, whennext, 320);}
+static struct ast_format_def slin_f = {
        .name = "sln",
        .exts = "sln|raw",
-       .format = AST_FORMAT_SLINEAR,
        .write = slinear_write,
        .seek = slinear_seek,
        .trunc = slinear_trunc,
        .tell = slinear_tell,
        .read = slinear_read,
-       .buf_size = BUF_SIZE + AST_FRIENDLY_OFFSET,
-       .lockp = &me,
+       .buf_size = 320 + AST_FRIENDLY_OFFSET,
 };
 
-int load_module()
-{
-       return ast_format_register(&slin_f);
-}
+static struct ast_frame *slinear12_read(struct ast_filestream *s, int *whennext){return generic_read(s, whennext, 480);}
+static struct ast_format_def slin12_f = {
+       .name = "sln12",
+       .exts = "sln12",
+       .write = slinear_write,
+       .seek = slinear_seek,
+       .trunc = slinear_trunc,
+       .tell = slinear_tell,
+       .read = slinear12_read,
+       .buf_size = 480 + AST_FRIENDLY_OFFSET,
+};
 
-int unload_module()
-{
-       return ast_format_unregister(slin_f.name);
-}      
+static struct ast_frame *slinear16_read(struct ast_filestream *s, int *whennext){return generic_read(s, whennext, 640);}
+static struct ast_format_def slin16_f = {
+       .name = "sln16",
+       .exts = "sln16",
+       .write = slinear_write,
+       .seek = slinear_seek,
+       .trunc = slinear_trunc,
+       .tell = slinear_tell,
+       .read = slinear16_read,
+       .buf_size = 640 + AST_FRIENDLY_OFFSET,
+};
 
-int usecount()
-{
-       return me.usecnt;
-}
+static struct ast_frame *slinear24_read(struct ast_filestream *s, int *whennext){return generic_read(s, whennext, 960);}
+static struct ast_format_def slin24_f = {
+       .name = "sln24",
+       .exts = "sln24",
+       .write = slinear_write,
+       .seek = slinear_seek,
+       .trunc = slinear_trunc,
+       .tell = slinear_tell,
+       .read = slinear24_read,
+       .buf_size = 960 + AST_FRIENDLY_OFFSET,
+};
+
+static struct ast_frame *slinear32_read(struct ast_filestream *s, int *whennext){return generic_read(s, whennext, 1280);}
+static struct ast_format_def slin32_f = {
+       .name = "sln32",
+       .exts = "sln32",
+       .write = slinear_write,
+       .seek = slinear_seek,
+       .trunc = slinear_trunc,
+       .tell = slinear_tell,
+       .read = slinear32_read,
+       .buf_size = 1280 + AST_FRIENDLY_OFFSET,
+};
+
+static struct ast_frame *slinear44_read(struct ast_filestream *s, int *whennext){return generic_read(s, whennext, 1764);}
+static struct ast_format_def slin44_f = {
+       .name = "sln44",
+       .exts = "sln44",
+       .write = slinear_write,
+       .seek = slinear_seek,
+       .trunc = slinear_trunc,
+       .tell = slinear_tell,
+       .read = slinear44_read,
+       .buf_size = 1764 + AST_FRIENDLY_OFFSET,
+};
+
+static struct ast_frame *slinear48_read(struct ast_filestream *s, int *whennext){return generic_read(s, whennext, 1920);}
+static struct ast_format_def slin48_f = {
+       .name = "sln48",
+       .exts = "sln48",
+       .write = slinear_write,
+       .seek = slinear_seek,
+       .trunc = slinear_trunc,
+       .tell = slinear_tell,
+       .read = slinear48_read,
+       .buf_size = 1920 + AST_FRIENDLY_OFFSET,
+};
 
-const char *description()
+static struct ast_frame *slinear96_read(struct ast_filestream *s, int *whennext){return generic_read(s, whennext, 3840);}
+static struct ast_format_def slin96_f = {
+       .name = "sln96",
+       .exts = "sln96",
+       .write = slinear_write,
+       .seek = slinear_seek,
+       .trunc = slinear_trunc,
+       .tell = slinear_tell,
+       .read = slinear96_read,
+       .buf_size = 3840 + AST_FRIENDLY_OFFSET,
+};
+
+static struct ast_frame *slinear192_read(struct ast_filestream *s, int *whennext){return generic_read(s, whennext, 7680);}
+static struct ast_format_def slin192_f = {
+       .name = "sln192",
+       .exts = "sln192",
+       .write = slinear_write,
+       .seek = slinear_seek,
+       .trunc = slinear_trunc,
+       .tell = slinear_tell,
+       .read = slinear192_read,
+       .buf_size = 7680 + AST_FRIENDLY_OFFSET,
+};
+
+static struct ast_format_def *slin_list[] = {
+       &slin_f,
+       &slin12_f,
+       &slin16_f,
+       &slin24_f,
+       &slin32_f,
+       &slin44_f,
+       &slin48_f,
+       &slin96_f,
+       &slin192_f,
+};
+
+static int unload_module(void)
 {
-       return "Raw Signed Linear Audio support (SLN)";
+       int res = 0;
+       int i = 0;
+
+       for (i = 0; i < ARRAY_LEN(slin_list); i++) {
+               if (ast_format_def_unregister(slin_list[i]->name)) {
+                       res = -1;
+               }
+       }
+       return res;
 }
 
-const char *key()
+static int load_module(void)
 {
-       return ASTERISK_GPL_KEY;
+       int i;
+
+       slin_f.format = ast_format_slin;
+       slin12_f.format = ast_format_slin12;
+       slin16_f.format = ast_format_slin16;
+       slin24_f.format = ast_format_slin24;
+       slin32_f.format = ast_format_slin32;
+       slin44_f.format = ast_format_slin44;
+       slin48_f.format = ast_format_slin48;
+       slin96_f.format = ast_format_slin96;
+       slin192_f.format = ast_format_slin192;
+
+       for (i = 0; i < ARRAY_LEN(slin_list); i++) {
+               if (ast_format_def_register(slin_list[i])) {
+                       unload_module();
+                       return AST_MODULE_LOAD_DECLINE;
+               }
+       }
+
+       return AST_MODULE_LOAD_SUCCESS;
 }
+
+AST_MODULE_INFO(ASTERISK_GPL_KEY, AST_MODFLAG_LOAD_ORDER, "Raw Signed Linear Audio support (SLN) 8khz-192khz",
+       .support_level = AST_MODULE_SUPPORT_CORE,
+       .load = load_module,
+       .unload = unload_module,
+       .load_pri = AST_MODPRI_APP_DEPEND
+);