#include "asterisk.h"
#include <string.h>
#include "asterisk/frame.h"
#include "asterisk/slinfactory.h"
#include "asterisk/logger.h"
#include "asterisk/translate.h"
Go to the source code of this file.
Functions | |
unsigned int | ast_slinfactory_available (const struct ast_slinfactory *sf) |
void | ast_slinfactory_destroy (struct ast_slinfactory *sf) |
int | ast_slinfactory_feed (struct ast_slinfactory *sf, struct ast_frame *f) |
void | ast_slinfactory_flush (struct ast_slinfactory *sf) |
void | ast_slinfactory_init (struct ast_slinfactory *sf) |
int | ast_slinfactory_read (struct ast_slinfactory *sf, short *buf, size_t samples) |
Definition in file slinfactory.c.
unsigned int ast_slinfactory_available | ( | const struct ast_slinfactory * | sf | ) |
Definition at line 172 of file slinfactory.c.
References ast_slinfactory::size.
Referenced by ast_audiohook_write_frame(), audio_audiohook_write_list(), audiohook_read_frame_both(), and audiohook_read_frame_single().
00173 { 00174 return sf->size; 00175 }
void ast_slinfactory_destroy | ( | struct ast_slinfactory * | sf | ) |
Definition at line 44 of file slinfactory.c.
References ast_frfree, AST_LIST_REMOVE_HEAD, ast_translator_free_path(), f, and ast_slinfactory::trans.
Referenced by ast_audiohook_destroy().
00045 { 00046 struct ast_frame *f; 00047 00048 if (sf->trans) { 00049 ast_translator_free_path(sf->trans); 00050 sf->trans = NULL; 00051 } 00052 00053 while ((f = AST_LIST_REMOVE_HEAD(&sf->queue, frame_list))) 00054 ast_frfree(f); 00055 }
int ast_slinfactory_feed | ( | struct ast_slinfactory * | sf, | |
struct ast_frame * | f | |||
) |
Definition at line 57 of file slinfactory.c.
References AST_FORMAT_SLINEAR, ast_frdup(), ast_frfree, ast_frisolate(), ast_getformatname(), AST_LIST_INSERT_TAIL, AST_LIST_NEXT, AST_LIST_TRAVERSE, ast_log(), ast_translate(), ast_translator_build_path(), ast_translator_free_path(), f, ast_slinfactory::format, LOG_WARNING, ast_frame::samples, ast_slinfactory::size, and ast_slinfactory::trans.
Referenced by ast_audiohook_write_frame().
00058 { 00059 struct ast_frame *begin_frame = f, *duped_frame = NULL, *frame_ptr; 00060 unsigned int x = 0; 00061 00062 /* In some cases, we can be passed a frame which has no data in it, but 00063 * which has a positive number of samples defined. Once such situation is 00064 * when a jitter buffer is in use and the jitter buffer interpolates a frame. 00065 * The frame it produces has data set to NULL, datalen set to 0, and samples 00066 * set to either 160 or 240. 00067 */ 00068 if (!f->data) { 00069 return 0; 00070 } 00071 00072 if (f->subclass != AST_FORMAT_SLINEAR) { 00073 if (sf->trans && f->subclass != sf->format) { 00074 ast_translator_free_path(sf->trans); 00075 sf->trans = NULL; 00076 } 00077 00078 if (!sf->trans) { 00079 if ((sf->trans = ast_translator_build_path(AST_FORMAT_SLINEAR, f->subclass)) == NULL) { 00080 ast_log(LOG_WARNING, "Cannot build a path from %s to slin\n", ast_getformatname(f->subclass)); 00081 return 0; 00082 } else { 00083 sf->format = f->subclass; 00084 } 00085 } 00086 00087 if (!(begin_frame = ast_translate(sf->trans, f, 0))) { 00088 return 0; 00089 } 00090 00091 if (!(duped_frame = ast_frisolate(begin_frame))) { 00092 return 0; 00093 } 00094 00095 if (duped_frame != begin_frame) { 00096 ast_frfree(begin_frame); 00097 } 00098 } else { 00099 if (!(duped_frame = ast_frdup(f))) 00100 return 0; 00101 } 00102 00103 AST_LIST_TRAVERSE(&sf->queue, frame_ptr, frame_list) { 00104 x++; 00105 } 00106 00107 /* if the frame was translated, the translator may have returned multiple 00108 frames, so process each of them 00109 */ 00110 for (begin_frame = duped_frame; begin_frame; begin_frame = AST_LIST_NEXT(begin_frame, frame_list)) { 00111 AST_LIST_INSERT_TAIL(&sf->queue, begin_frame, frame_list); 00112 sf->size += begin_frame->samples; 00113 } 00114 00115 return x; 00116 }
void ast_slinfactory_flush | ( | struct ast_slinfactory * | sf | ) |
Definition at line 177 of file slinfactory.c.
References ast_frfree, AST_LIST_REMOVE_HEAD, ast_translator_free_path(), ast_slinfactory::hold, ast_slinfactory::holdlen, ast_slinfactory::offset, ast_slinfactory::size, and ast_slinfactory::trans.
Referenced by ast_audiohook_write_frame().
00178 { 00179 struct ast_frame *fr = NULL; 00180 00181 if (sf->trans) { 00182 ast_translator_free_path(sf->trans); 00183 sf->trans = NULL; 00184 } 00185 00186 while ((fr = AST_LIST_REMOVE_HEAD(&sf->queue, frame_list))) 00187 ast_frfree(fr); 00188 00189 sf->size = sf->holdlen = 0; 00190 sf->offset = sf->hold; 00191 00192 return; 00193 }
void ast_slinfactory_init | ( | struct ast_slinfactory * | sf | ) |
int ast_slinfactory_read | ( | struct ast_slinfactory * | sf, | |
short * | buf, | |||
size_t | samples | |||
) |
Definition at line 118 of file slinfactory.c.
References ast_frfree, AST_LIST_REMOVE_HEAD, AST_SLINFACTORY_MAX_HOLD, ast_frame::data, ast_slinfactory::hold, ast_slinfactory::holdlen, offset, ast_slinfactory::offset, ast_frame::samples, and ast_slinfactory::size.
Referenced by audio_audiohook_write_list(), audiohook_read_frame_both(), and audiohook_read_frame_single().
00119 { 00120 struct ast_frame *frame_ptr; 00121 unsigned int sofar = 0, ineed, remain; 00122 short *frame_data, *offset = buf; 00123 00124 while (sofar < samples) { 00125 ineed = samples - sofar; 00126 00127 if (sf->holdlen) { 00128 if (sf->holdlen <= ineed) { 00129 memcpy(offset, sf->hold, sf->holdlen * sizeof(*offset)); 00130 sofar += sf->holdlen; 00131 offset += sf->holdlen; 00132 sf->holdlen = 0; 00133 sf->offset = sf->hold; 00134 } else { 00135 remain = sf->holdlen - ineed; 00136 memcpy(offset, sf->offset, ineed * sizeof(*offset)); 00137 sofar += ineed; 00138 sf->offset += ineed; 00139 sf->holdlen = remain; 00140 } 00141 continue; 00142 } 00143 00144 if ((frame_ptr = AST_LIST_REMOVE_HEAD(&sf->queue, frame_list))) { 00145 frame_data = frame_ptr->data; 00146 00147 if (frame_ptr->samples <= ineed) { 00148 memcpy(offset, frame_data, frame_ptr->samples * sizeof(*offset)); 00149 sofar += frame_ptr->samples; 00150 offset += frame_ptr->samples; 00151 } else { 00152 remain = frame_ptr->samples - ineed; 00153 memcpy(offset, frame_data, ineed * sizeof(*offset)); 00154 sofar += ineed; 00155 frame_data += ineed; 00156 if (remain > (AST_SLINFACTORY_MAX_HOLD - sf->holdlen)) { 00157 remain = AST_SLINFACTORY_MAX_HOLD - sf->holdlen; 00158 } 00159 memcpy(sf->hold, frame_data, remain * sizeof(*offset)); 00160 sf->holdlen = remain; 00161 } 00162 ast_frfree(frame_ptr); 00163 } else { 00164 break; 00165 } 00166 } 00167 00168 sf->size -= sofar; 00169 return sofar; 00170 }