1 | /*
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2 | * linuxdvb output/writer handling.
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3 | *
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4 | * konfetti 2010
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5 | *
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6 | * This program is free software; you can redistribute it and/or modify
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7 | * it under the terms of the GNU General Public License as published by
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8 | * the Free Software Foundation; either version 2 of the License, or
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9 | * (at your option) any later version.
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10 | *
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11 | * This program is distributed in the hope that it will be useful,
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12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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14 | * GNU General Public License for more details.
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15 | *
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16 | * You should have received a copy of the GNU General Public License
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17 | * along with this program; if not, write to the Free Software
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18 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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19 | *
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20 | */
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21 |
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22 | /* ***************************** */
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23 | /* Includes */
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24 | /* ***************************** */
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25 | #include <stdlib.h>
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26 | #include <string.h>
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27 | #include <errno.h>
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28 |
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29 | #include "misc.h"
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30 | #include "writer.h"
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31 | #include "common.h"
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32 |
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33 | /* ***************************** */
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34 | /* Makros/Constants */
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35 | /* ***************************** */
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36 |
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37 | #define WRITER_DEBUG
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38 |
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39 | #ifdef WRITER_DEBUG
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40 |
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41 | static short debug_level = 0;
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42 |
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43 | #define writer_printf(level, x...) do { \
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44 | if (debug_level >= level) printf(x); } while (0)
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45 | #else
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46 | #define writer_printf(level, x...)
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47 | #endif
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48 |
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49 | #ifndef WRITER_SILENT
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50 | #define writer_err(x...) do { printf(x); } while (0)
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51 | #else
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52 | #define writer_err(x...)
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53 | #endif
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54 |
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55 | /* ***************************** */
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56 | /* Types */
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57 | /* ***************************** */
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58 |
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59 | /* ***************************** */
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60 | /* Varaibles */
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61 | /* ***************************** */
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62 |
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63 | static Writer_t * AvailableWriter[] = {
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64 | &WriterAudioAAC,
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65 | &WriterAudioAACLATM,
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66 | &WriterAudioAACPLUS,
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67 | &WriterAudioAC3,
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68 | &WriterAudioEAC3,
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69 | &WriterAudioMP3,
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70 | &WriterAudioMPEGL3,
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71 | &WriterAudioPCM,
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72 | &WriterAudioIPCM,
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73 | &WriterAudioLPCM,
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74 | &WriterAudioDTS,
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75 | &WriterAudioWMA,
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76 | &WriterAudioWMAPRO,
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77 |
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78 | &WriterVideoH264,
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79 | &WriterVideoH265,
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80 | &WriterVideoH263,
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81 | &WriterVideoMPEG4,
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82 | &WriterVideoMPEG2,
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83 | &WriterVideoMPEG1,
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84 | &WriterVideoVC1,
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85 | &WriterVideoDIVX3,
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86 | &WriterVideoVP6,
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87 | &WriterVideoVP8,
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88 | &WriterVideoVP9,
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89 | &WriterVideoSPARK,
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90 | &WriterVideoWMV,
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91 | NULL
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92 | };
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93 |
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94 | /* ***************************** */
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95 | /* Prototypes */
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96 | /* ***************************** */
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97 |
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98 | /* ***************************** */
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99 | /* Functions */
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100 | /* ***************************** */
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101 | static void FlusPipe(int pipefd)
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102 | {
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103 | char tmp;
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104 | while(1 == read(pipefd, &tmp, 1));
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105 | }
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106 |
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107 | ssize_t WriteWithRetry(Context_t *context, int pipefd, int fd, const void *buf, size_t size)
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108 | {
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109 | fd_set rfds;
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110 | fd_set wfds;
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111 |
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112 | ssize_t ret;
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113 | int retval = -1;
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114 | int maxFd = pipefd > fd ? pipefd : fd;
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115 | struct timeval tv;
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116 |
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117 | while(size > 0 && 0 == PlaybackDieNow(0) && !context->playback->isSeeking)
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118 | {
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119 | FD_ZERO(&rfds);
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120 | FD_ZERO(&wfds);
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121 |
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122 | FD_SET(pipefd, &rfds);
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123 | FD_SET(fd, &wfds);
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124 |
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125 | /* When we PAUSE LINUX DVB outputs buffers then audio/video buffers
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126 | * will be filled to full unfortunately, in such case after resume
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127 | * select never return with fd set - bug in DVB drivers?
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128 | * So, there will be to workarounds:
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129 | * 1. write to pipe pipe at resume to exit select immediately
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130 | * 2. even if fd is not set exit from select after 0,1s
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131 | * (it seems that second workaround is not needed)
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132 | */
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133 | //tv.tv_sec = 0;
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134 | //tv.tv_usec = 100000; // 100ms
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135 |
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136 | retval = select(maxFd + 1, &rfds, &wfds, NULL, NULL); //&tv);
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137 | if (retval < 0)
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138 | {
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139 | break;
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140 | }
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141 |
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142 | //if (retval == 0)
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143 | //{
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144 | // //printf("RETURN FROM SELECT DUE TO TIMEOUT TIMEOUT\n");
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145 | // continue;
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146 | //}
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147 |
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148 | if(FD_ISSET(pipefd, &rfds))
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149 | {
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150 | FlusPipe(pipefd);
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151 | //printf("RETURN FROM SELECT DUE TO pipefd SET\n");
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152 | continue;
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153 | }
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154 |
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155 | if(FD_ISSET(fd, &wfds))
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156 | {
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157 | ret = write(fd, buf, size);
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158 | if (ret < 0)
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159 | {
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160 | switch(errno)
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161 | {
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162 | case EINTR:
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163 | case EAGAIN:
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164 | continue;
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165 | default:
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166 | retval = -3;
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167 | break;
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168 | }
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169 | if (retval < 0)
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170 | {
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171 | break;
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172 | }
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173 |
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174 | return ret;
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175 | }
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176 | else if (ret == 0)
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177 | {
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178 | //printf("This should not happen. Select return fd ready to write, but write return 0, errno [%d]\n", errno);
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179 | tv.tv_sec = 0;
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180 | tv.tv_usec = 10000; // 10ms
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181 | retval = select(pipefd + 1, &rfds, NULL, NULL, &tv);
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182 | if (retval)
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183 | FlusPipe(pipefd);
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184 | continue;
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185 | }
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186 |
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187 | size -= ret;
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188 | buf += ret;
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189 | }
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190 | }
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191 | return 0;
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192 | }
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193 |
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194 | ssize_t write_with_retry(int fd, const void *buf, size_t size)
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195 | {
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196 | ssize_t ret;
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197 | int retval = 0;
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198 | //obi
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199 | // while(size > 0 && 0 == PlaybackDieNow(0))
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200 | while(size > 0)
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201 | //obi (end)
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202 | {
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203 | ret = write(fd, buf, size);
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204 | //printf("[%d] write [%lld]\n", fd, ret);
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205 | if (ret < 0)
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206 | {
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207 | switch(errno)
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208 | {
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209 | case EINTR:
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210 | case EAGAIN:
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211 | usleep(1000);
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212 | continue;
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213 | default:
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214 | retval = -3;
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215 | break;
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216 | }
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217 | if (retval < 0)
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218 | {
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219 | break;
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220 | }
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221 | }
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222 |
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223 | if (ret < 0)
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224 | {
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225 | return ret;
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226 | }
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227 |
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228 | size -= ret;
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229 | buf += ret;
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230 |
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231 | if(size > 0)
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232 | {
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233 | if( usleep(1000) )
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234 | {
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235 | writer_err("usleep error \n");
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236 | }
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237 | }
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238 | }
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239 | return 0;
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240 | }
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241 |
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242 | ssize_t writev_with_retry(int fd, const struct iovec *iov, size_t ic)
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243 | {
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244 | ssize_t len = 0;
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245 | int i = 0;
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246 | for(i=0; i<ic; ++i)
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247 | {
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248 | write_with_retry(fd, iov[i].iov_base, iov[i].iov_len);
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249 | len += iov[i].iov_len;
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250 | if(PlaybackDieNow(0))
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251 | {
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252 | //obi
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253 | // return -1;
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254 | //obi (end)
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255 | }
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256 | }
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257 | return len;
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258 | }
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259 |
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260 | Writer_t* getWriter(char* encoding)
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261 | {
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262 | int i;
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263 |
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264 | for (i = 0; AvailableWriter[i] != NULL; i++)
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265 | {
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266 | if (strcmp(AvailableWriter[i]->caps->textEncoding, encoding) == 0)
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267 | {
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268 | writer_printf(50, "%s: found writer \"%s\" for \"%s\"\n", __func__, AvailableWriter[i]->caps->name, encoding);
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269 | return AvailableWriter[i];
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270 | }
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271 | }
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272 |
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273 | writer_printf(1, "%s: no writer found for \"%s\"\n", __func__, encoding);
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274 |
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275 | return NULL;
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276 | }
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277 |
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278 | Writer_t* getDefaultVideoWriter()
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279 | {
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280 | int i;
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281 |
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282 | for (i = 0; AvailableWriter[i] != NULL; i++)
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283 | {
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284 | if (strcmp(AvailableWriter[i]->caps->textEncoding, "V_MPEG2") == 0)
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285 | {
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286 | writer_printf(50, "%s: found writer \"%s\"\n", __func__, AvailableWriter[i]->caps->name);
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287 | return AvailableWriter[i];
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288 | }
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289 | }
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290 |
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291 | writer_printf(1, "%s: no writer found\n", __func__);
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292 |
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293 | return NULL;
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294 | }
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295 |
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296 | Writer_t* getDefaultAudioWriter()
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297 | {
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298 | int i;
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299 |
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300 | for (i = 0; AvailableWriter[i] != NULL; i++)
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301 | {
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302 | if (strcmp(AvailableWriter[i]->caps->textEncoding, "A_MP3") == 0)
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303 | {
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304 | writer_printf(50, "%s: found writer \"%s\"\n", __func__, AvailableWriter[i]->caps->name);
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305 | return AvailableWriter[i];
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306 | }
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307 | }
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308 |
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309 | writer_printf(1, "%s: no writer found\n", __func__);
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310 |
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311 | return NULL;
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312 | }
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313 |
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