res_pjsip/res_pjsip_callerid: NULL check on caller id name string
[asterisk/asterisk.git] / codecs / codec_ulaw.c
index 3833201..e0a4f68 100644 (file)
  * \ingroup codecs
  */
 
-#include <fcntl.h>
-#include <netinet/in.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
+/*** MODULEINFO
+       <support_level>core</support_level>
+ ***/
 
 #include "asterisk.h"
 
-ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
-
-#include "asterisk/lock.h"
-#include "asterisk/logger.h"
 #include "asterisk/module.h"
 #include "asterisk/config.h"
-#include "asterisk/options.h"
 #include "asterisk/translate.h"
-#include "asterisk/channel.h"
 #include "asterisk/ulaw.h"
 #include "asterisk/utils.h"
 
-#define BUFFER_SIZE   8096     /* size for the translation buffers */
-
-AST_MUTEX_DEFINE_STATIC(localuser_lock);
-static int localusecnt = 0;
-
-static char *tdesc = "Mu-law Coder/Decoder";
-
-static int useplc = 0;
+#define BUFFER_SAMPLES   8096  /* size for the translation buffers */
 
 /* Sample frame data */
+#include "asterisk/slin.h"
+#include "ex_ulaw.h"
 
-#include "slin_ulaw_ex.h"
-#include "ulaw_slin_ex.h"
-
-/*!
- * \brief Private workspace for translating signed linear signals to ulaw.
- */
-
-struct ulaw_encoder_pvt
-{
-       struct ast_frame f;
-       char offset[AST_FRIENDLY_OFFSET];   /*!< Space to build offset */
-       unsigned char outbuf[BUFFER_SIZE];  /*!< Encoded ulaw, two nibbles to a word */
-       int tail;
-};
-
-/*!
- * \brief Private workspace for translating ulaw signals to signed linear.
- */
-
-struct ulaw_decoder_pvt
-{
-       struct ast_frame f;
-       char offset[AST_FRIENDLY_OFFSET];       /* Space to build offset */
-       short outbuf[BUFFER_SIZE];              /* Decoded signed linear values */
-       int tail;
-       plc_state_t plc;
-};
-
-/*!
- * \brief ulawToLin_New
- *  Create a new instance of ulaw_decoder_pvt.
- *
- * Results:
- *  Returns a pointer to the new instance.
- *
- * Side effects:
- *  None.
- */
-
-static struct ast_translator_pvt *ulawtolin_new(void)
-{
-       struct ulaw_decoder_pvt *tmp;
-
-       if ((tmp = ast_calloc(1, sizeof(*tmp)))) {
-               tmp->tail = 0;
-               plc_init(&tmp->plc);
-               localusecnt++;
-               ast_update_use_count();
-       }
-
-       return (struct ast_translator_pvt *)tmp;
-}
-
-/*!
- * \brief LinToulaw_New
- *  Create a new instance of ulaw_encoder_pvt.
- *
- * Results:
- *  Returns a pointer to the new instance.
- *
- * Side effects:
- *  None.
- */
-
-static struct ast_translator_pvt *lintoulaw_new(void)
+/*! \brief convert and store samples in outbuf */
+static int ulawtolin_framein(struct ast_trans_pvt *pvt, struct ast_frame *f)
 {
-       struct ulaw_encoder_pvt *tmp;
-       
-       if ((tmp = ast_calloc(1, sizeof(*tmp)))) {
-               localusecnt++;
-               ast_update_use_count();
-               tmp->tail = 0;
-       }
+       int i = f->samples;
+       unsigned char *src = f->data.ptr;
+       int16_t *dst = pvt->outbuf.i16 + pvt->samples;
 
-       return (struct ast_translator_pvt *)tmp;
-}
+       pvt->samples += i;
+       pvt->datalen += i * 2;  /* 2 bytes/sample */
 
-/*!
- * \brief ulawToLin_FrameIn
- *  Fill an input buffer with packed 4-bit ulaw values if there is room
- *  left.
- *
- * Results:
- *  Foo
- *
- * Side effects:
- *  tmp->tail is the number of packed values in the buffer.
- */
-
-static int ulawtolin_framein(struct ast_translator_pvt *pvt, struct ast_frame *f)
-{
-       struct ulaw_decoder_pvt *tmp = (struct ulaw_decoder_pvt *)pvt;
-       int x;
-       unsigned char *b;
+       /* convert and copy in outbuf */
+       while (i--)
+               *dst++ = AST_MULAW(*src++);
 
-       if(f->datalen == 0) { /* perform PLC with nominal framesize of 20ms/160 samples */
-               if((tmp->tail + 160) * 2 > sizeof(tmp->outbuf)) {
-                       ast_log(LOG_WARNING, "Out of buffer space\n");
-                       return -1;
-               }
-               if(useplc) {
-                       plc_fillin(&tmp->plc, tmp->outbuf+tmp->tail, 160);
-                       tmp->tail += 160;
-               }
-               return 0;
-       }
-
-       if ((tmp->tail + f->datalen) * 2 > sizeof(tmp->outbuf)) {
-               ast_log(LOG_WARNING, "Out of buffer space\n");
-               return -1;
-       }
-
-       /* Reset ssindex and signal to frame's specified values */
-       b = f->data;
-       for (x=0;x<f->datalen;x++)
-               tmp->outbuf[tmp->tail + x] = AST_MULAW(b[x]);
-
-       if(useplc)
-               plc_rx(&tmp->plc, tmp->outbuf+tmp->tail, f->datalen);
-
-       tmp->tail += f->datalen;
        return 0;
 }
 
-/*!
- * \brief ulawToLin_FrameOut
- *  Convert 4-bit ulaw encoded signals to 16-bit signed linear.
- *
- * Results:
- *  Converted signals are placed in tmp->f.data, tmp->f.datalen
- *  and tmp->f.samples are calculated.
- *
- * Side effects:
- *  None.
- */
-
-static struct ast_frame *ulawtolin_frameout(struct ast_translator_pvt *pvt)
+/*! \brief convert and store samples in outbuf */
+static int lintoulaw_framein(struct ast_trans_pvt *pvt, struct ast_frame *f)
 {
-       struct ulaw_decoder_pvt *tmp = (struct ulaw_decoder_pvt *)pvt;
-
-       if (!tmp->tail)
-               return NULL;
+       int i = f->samples;
+       char *dst = pvt->outbuf.c + pvt->samples;
+       int16_t *src = f->data.ptr;
 
-       tmp->f.frametype = AST_FRAME_VOICE;
-       tmp->f.subclass = AST_FORMAT_SLINEAR;
-       tmp->f.datalen = tmp->tail * 2;
-       tmp->f.samples = tmp->tail;
-       tmp->f.mallocd = 0;
-       tmp->f.offset = AST_FRIENDLY_OFFSET;
-       tmp->f.src = __PRETTY_FUNCTION__;
-       tmp->f.data = tmp->outbuf;
-       tmp->tail = 0;
-       return &tmp->f;
-}
+       pvt->samples += i;
+       pvt->datalen += i;      /* 1 byte/sample */
 
-/*!
- * \brief LinToulaw_FrameIn
- *  Fill an input buffer with 16-bit signed linear PCM values.
- *
- * Results:
- *  None.
- *
- * Side effects:
- *  tmp->tail is number of signal values in the input buffer.
- */
+       while (i--)
+               *dst++ = AST_LIN2MU(*src++);
 
-static int lintoulaw_framein(struct ast_translator_pvt *pvt, struct ast_frame *f)
-{
-       struct ulaw_encoder_pvt *tmp = (struct ulaw_encoder_pvt *)pvt;
-       int x;
-       short *s;
-       if (tmp->tail + f->datalen / 2 >= sizeof(tmp->outbuf)) {
-               ast_log(LOG_WARNING, "Out of buffer space\n");
-               return -1;
-       }
-       s = f->data;
-       for (x=0;x<f->datalen/2;x++) 
-               tmp->outbuf[x+tmp->tail] = AST_LIN2MU(s[x]);
-       tmp->tail += f->datalen/2;
        return 0;
 }
 
 /*!
- * \brief LinToulaw_FrameOut
- *  Convert a buffer of raw 16-bit signed linear PCM to a buffer
- *  of 4-bit ulaw packed two to a byte (Big Endian).
- *
- * Results:
- *  Foo
- *
- * Side effects:
- *  Leftover inbuf data gets packed, tail gets updated.
- */
-
-static struct ast_frame *lintoulaw_frameout(struct ast_translator_pvt *pvt)
-{
-       struct ulaw_encoder_pvt *tmp = (struct ulaw_encoder_pvt *)pvt;
-  
-       if (tmp->tail) {
-               tmp->f.frametype = AST_FRAME_VOICE;
-               tmp->f.subclass = AST_FORMAT_ULAW;
-               tmp->f.samples = tmp->tail;
-               tmp->f.mallocd = 0;
-               tmp->f.offset = AST_FRIENDLY_OFFSET;
-               tmp->f.src = __PRETTY_FUNCTION__;
-               tmp->f.data = tmp->outbuf;
-               tmp->f.datalen = tmp->tail;
-               tmp->tail = 0;
-               return &tmp->f;
-       } else
-               return NULL;
-}
-
-
-/*!
- * \brief ulawToLin_Sample
- */
-
-static struct ast_frame *ulawtolin_sample(void)
-{
-       static struct ast_frame f;
-       f.frametype = AST_FRAME_VOICE;
-       f.subclass = AST_FORMAT_ULAW;
-       f.datalen = sizeof(ulaw_slin_ex);
-       f.samples = sizeof(ulaw_slin_ex);
-       f.mallocd = 0;
-       f.offset = 0;
-       f.src = __PRETTY_FUNCTION__;
-       f.data = ulaw_slin_ex;
-       return &f;
-}
-
-/*!
- * \brief LinToulaw_Sample
- */
-
-static struct ast_frame *lintoulaw_sample(void)
-{
-       static struct ast_frame f;
-       f.frametype = AST_FRAME_VOICE;
-       f.subclass = AST_FORMAT_SLINEAR;
-       f.datalen = sizeof(slin_ulaw_ex);
-       /* Assume 8000 Hz */
-       f.samples = sizeof(slin_ulaw_ex) / 2;
-       f.mallocd = 0;
-       f.offset = 0;
-       f.src = __PRETTY_FUNCTION__;
-       f.data = slin_ulaw_ex;
-       return &f;
-}
-
-/*!
- * \brief ulaw_Destroy
- *  Destroys a private workspace.
- *
- * Results:
- *  It's gone!
- *
- * Side effects:
- *  None.
- */
-
-static void ulaw_destroy(struct ast_translator_pvt *pvt)
-{
-       free(pvt);
-       localusecnt--;
-       ast_update_use_count();
-}
-
-/*!
  * \brief The complete translator for ulawToLin.
  */
 
 static struct ast_translator ulawtolin = {
-       "ulawtolin",
-       AST_FORMAT_ULAW,
-       AST_FORMAT_SLINEAR,
-       ulawtolin_new,
-       ulawtolin_framein,
-       ulawtolin_frameout,
-       ulaw_destroy,
-       /* NULL */
-       ulawtolin_sample
+       .name = "ulawtolin",
+       .src_codec = {
+               .name = "ulaw",
+               .type = AST_MEDIA_TYPE_AUDIO,
+               .sample_rate = 8000,
+       },
+       .dst_codec = {
+               .name = "slin",
+               .type = AST_MEDIA_TYPE_AUDIO,
+               .sample_rate = 8000,
+       },
+       .format = "slin",
+       .framein = ulawtolin_framein,
+       .sample = ulaw_sample,
+       .buffer_samples = BUFFER_SAMPLES,
+       .buf_size = BUFFER_SAMPLES * 2,
+};
+
+static struct ast_translator testlawtolin = {
+       .name = "testlawtolin",
+       .src_codec = {
+               .name = "testlaw",
+               .type = AST_MEDIA_TYPE_AUDIO,
+               .sample_rate = 8000,
+       },
+       .dst_codec = {
+               .name = "slin",
+               .type = AST_MEDIA_TYPE_AUDIO,
+               .sample_rate = 8000,
+       },
+       .format = "slin",
+       .framein = ulawtolin_framein,
+       .sample = ulaw_sample,
+       .buffer_samples = BUFFER_SAMPLES,
+       .buf_size = BUFFER_SAMPLES * 2,
 };
 
 /*!
@@ -345,84 +121,74 @@ static struct ast_translator ulawtolin = {
  */
 
 static struct ast_translator lintoulaw = {
-       "lintoulaw",
-       AST_FORMAT_SLINEAR,
-       AST_FORMAT_ULAW,
-       lintoulaw_new,
-       lintoulaw_framein,
-       lintoulaw_frameout,
-       ulaw_destroy,
-       /* NULL */
-       lintoulaw_sample
+       .name = "lintoulaw",
+       .src_codec = {
+               .name = "slin",
+               .type = AST_MEDIA_TYPE_AUDIO,
+               .sample_rate = 8000,
+       },
+       .dst_codec = {
+               .name = "ulaw",
+               .type = AST_MEDIA_TYPE_AUDIO,
+               .sample_rate = 8000,
+       },
+       .format = "ulaw",
+       .framein = lintoulaw_framein,
+       .sample = slin8_sample,
+       .buf_size = BUFFER_SAMPLES,
+       .buffer_samples = BUFFER_SAMPLES,
 };
 
-static void parse_config(void)
-{
-       struct ast_config *cfg;
-       struct ast_variable *var;
-       if ((cfg = ast_config_load("codecs.conf"))) {
-               if ((var = ast_variable_browse(cfg, "plc"))) {
-                       while (var) {
-                               if (!strcasecmp(var->name, "genericplc")) {
-                                       useplc = ast_true(var->value) ? 1 : 0;
-                                       if (option_verbose > 2)
-                                               ast_verbose(VERBOSE_PREFIX_3 "codec_ulaw: %susing generic PLC\n", useplc ? "" : "not ");
-                               }
-                               var = var->next;
-                       }
-               }
-               ast_config_destroy(cfg);
-       }
-}
-
-int reload(void)
-{
-       parse_config();
-       return 0;
-}
+static struct ast_translator lintotestlaw = {
+       .name = "lintotestlaw",
+       .src_codec = {
+               .name = "slin",
+               .type = AST_MEDIA_TYPE_AUDIO,
+               .sample_rate = 8000,
+       },
+       .dst_codec = {
+               .name = "testlaw",
+               .type = AST_MEDIA_TYPE_AUDIO,
+               .sample_rate = 8000,
+       },
+       .format = "testlaw",
+       .framein = lintoulaw_framein,
+       .sample = slin8_sample,
+       .buf_size = BUFFER_SAMPLES,
+       .buffer_samples = BUFFER_SAMPLES,
+};
 
-int unload_module(void)
+static int unload_module(void)
 {
        int res;
-       ast_mutex_lock(&localuser_lock);
+
        res = ast_unregister_translator(&lintoulaw);
-       if (!res)
-               res = ast_unregister_translator(&ulawtolin);
-       if (localusecnt)
-               res = -1;
-       ast_mutex_unlock(&localuser_lock);
+       res |= ast_unregister_translator(&ulawtolin);
+       res |= ast_unregister_translator(&testlawtolin);
+       res |= ast_unregister_translator(&lintotestlaw);
+
        return res;
 }
 
-int load_module(void)
+static int load_module(void)
 {
        int res;
-       parse_config();
-       res = ast_register_translator(&ulawtolin);
-       if (!res)
-               res = ast_register_translator(&lintoulaw);
-       else
-               ast_unregister_translator(&ulawtolin);
-       return res;
-}
 
-/*
- * Return a description of this module.
- */
+       res = ast_register_translator(&ulawtolin);
+       res |= ast_register_translator(&lintoulaw);
+       res |= ast_register_translator(&lintotestlaw);
+       res |= ast_register_translator(&testlawtolin);
 
-char *description(void)
-{
-       return tdesc;
-}
+       if (res) {
+               unload_module();
+               return AST_MODULE_LOAD_DECLINE;
+       }
 
-int usecount(void)
-{
-       int res;
-       STANDARD_USECOUNT(res);
-       return res;
+       return AST_MODULE_LOAD_SUCCESS;
 }
 
-char *key()
-{
-       return ASTERISK_GPL_KEY;
-}
+AST_MODULE_INFO(ASTERISK_GPL_KEY, AST_MODFLAG_DEFAULT, "mu-Law Coder/Decoder",
+       .support_level = AST_MODULE_SUPPORT_CORE,
+       .load = load_module,
+       .unload = unload_module,
+);