#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 166 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().
00167 { 00168 return sf->size; 00169 }
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, ast_frame::frame_list, 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_getformatname(), AST_LIST_INSERT_TAIL, AST_LIST_TRAVERSE, ast_log(), ast_translate(), ast_translator_build_path(), ast_translator_free_path(), f, ast_slinfactory::format, ast_frame::frame_list, LOG_WARNING, 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; 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 duped_frame = ast_frdup(begin_frame); 00091 00092 ast_frfree(begin_frame); 00093 00094 if (!duped_frame) 00095 return 0; 00096 } else { 00097 if (!(duped_frame = ast_frdup(f))) 00098 return 0; 00099 } 00100 00101 x = 0; 00102 AST_LIST_TRAVERSE(&sf->queue, frame_ptr, frame_list) 00103 x++; 00104 00105 AST_LIST_INSERT_TAIL(&sf->queue, duped_frame, frame_list); 00106 00107 sf->size += duped_frame->samples; 00108 00109 return x; 00110 }
void ast_slinfactory_flush | ( | struct ast_slinfactory * | sf | ) |
Definition at line 171 of file slinfactory.c.
References ast_frfree, AST_LIST_REMOVE_HEAD, ast_translator_free_path(), ast_frame::frame_list, ast_slinfactory::hold, ast_slinfactory::holdlen, ast_slinfactory::offset, ast_slinfactory::size, and ast_slinfactory::trans.
Referenced by ast_audiohook_write_frame().
00172 { 00173 struct ast_frame *fr = NULL; 00174 00175 if (sf->trans) { 00176 ast_translator_free_path(sf->trans); 00177 sf->trans = NULL; 00178 } 00179 00180 while ((fr = AST_LIST_REMOVE_HEAD(&sf->queue, frame_list))) 00181 ast_frfree(fr); 00182 00183 sf->size = sf->holdlen = 0; 00184 sf->offset = sf->hold; 00185 00186 return; 00187 }
void ast_slinfactory_init | ( | struct ast_slinfactory * | sf | ) |
int ast_slinfactory_read | ( | struct ast_slinfactory * | sf, | |
short * | buf, | |||
size_t | samples | |||
) |
Definition at line 112 of file slinfactory.c.
References ast_frfree, AST_LIST_REMOVE_HEAD, AST_SLINFACTORY_MAX_HOLD, ast_frame::data, ast_frame::frame_list, 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().
00113 { 00114 struct ast_frame *frame_ptr; 00115 unsigned int sofar = 0, ineed, remain; 00116 short *frame_data, *offset = buf; 00117 00118 while (sofar < samples) { 00119 ineed = samples - sofar; 00120 00121 if (sf->holdlen) { 00122 if (sf->holdlen <= ineed) { 00123 memcpy(offset, sf->hold, sf->holdlen * sizeof(*offset)); 00124 sofar += sf->holdlen; 00125 offset += sf->holdlen; 00126 sf->holdlen = 0; 00127 sf->offset = sf->hold; 00128 } else { 00129 remain = sf->holdlen - ineed; 00130 memcpy(offset, sf->offset, ineed * sizeof(*offset)); 00131 sofar += ineed; 00132 sf->offset += ineed; 00133 sf->holdlen = remain; 00134 } 00135 continue; 00136 } 00137 00138 if ((frame_ptr = AST_LIST_REMOVE_HEAD(&sf->queue, frame_list))) { 00139 frame_data = frame_ptr->data; 00140 00141 if (frame_ptr->samples <= ineed) { 00142 memcpy(offset, frame_data, frame_ptr->samples * sizeof(*offset)); 00143 sofar += frame_ptr->samples; 00144 offset += frame_ptr->samples; 00145 } else { 00146 remain = frame_ptr->samples - ineed; 00147 memcpy(offset, frame_data, ineed * sizeof(*offset)); 00148 sofar += ineed; 00149 frame_data += ineed; 00150 if (remain > (AST_SLINFACTORY_MAX_HOLD - sf->holdlen)) { 00151 remain = AST_SLINFACTORY_MAX_HOLD - sf->holdlen; 00152 } 00153 memcpy(sf->hold, frame_data, remain * sizeof(*offset)); 00154 sf->holdlen = remain; 00155 } 00156 ast_frfree(frame_ptr); 00157 } else { 00158 break; 00159 } 00160 } 00161 00162 sf->size -= sofar; 00163 return sofar; 00164 }