/******************************************************************** * * * THIS FILE IS PART OF THE OggVorbis SOFTWARE CODEC SOURCE CODE. * * USE, DISTRIBUTION AND REPRODUCTION OF THIS SOURCE IS GOVERNED BY * * THE GNU PUBLIC LICENSE 2, WHICH IS INCLUDED WITH THIS SOURCE. * * PLEASE READ THESE TERMS BEFORE DISTRIBUTING. * * * * THE Ogg123 SOURCE CODE IS (C) COPYRIGHT 2000-2001 * * by Stan Seibert AND OTHER CONTRIBUTORS * * http://www.xiph.org/ * * * ******************************************************************** last mod: $Id: callbacks.c 16825 2010-01-27 04:14:08Z xiphmont $ ********************************************************************/ #ifdef HAVE_CONFIG_H #include #endif #include #include #include "callbacks.h" #include "i18n.h" #define WARNING_VERBOSITY 2 #define INFO_VERBOSITY 3 /* Audio callbacks */ int audio_play_callback (void *ptr, int nbytes, int eos, void *arg) { audio_play_arg_t *play_arg = (audio_play_arg_t *) arg; int ret; ret = audio_devices_write(play_arg->devices, ptr, nbytes); return ret ? nbytes : 0; } void audio_reopen_action (buf_t *buf, void *arg) { audio_reopen_arg_t *reopen_arg = (audio_reopen_arg_t *) arg; audio_device_t *current; ao_sample_format format; close_audio_devices (reopen_arg->devices); /* Record audio device settings and open the devices */ format.rate = reopen_arg->format->rate; format.channels = reopen_arg->format->channels; format.bits = reopen_arg->format->word_size * 8; format.byte_format = reopen_arg->format->big_endian ? AO_FMT_BIG : AO_FMT_LITTLE; format.matrix = reopen_arg->format->matrix; current = reopen_arg->devices; while (current != NULL) { ao_info *info = ao_driver_info(current->driver_id); if (current->filename == NULL) current->device = ao_open_live(current->driver_id, &format, current->options); else current->device = ao_open_file(current->driver_id, current->filename, 1 /*overwrite*/, &format, current->options); /* Report errors */ if (current->device == NULL) { switch (errno) { case AO_ENODRIVER: status_error(_("ERROR: Device not available.\n")); break; case AO_ENOTLIVE: status_error(_("ERROR: %s requires an output filename to be specified with -f.\n"), info->short_name); break; case AO_EBADOPTION: status_error(_("ERROR: Unsupported option value to %s device.\n"), info->short_name); break; case AO_EOPENDEVICE: status_error(_("ERROR: Cannot open device %s.\n"), info->short_name); break; case AO_EFAIL: status_error(_("ERROR: Device %s failure.\n"), info->short_name); break; case AO_ENOTFILE: status_error(_("ERROR: An output file cannot be given for %s device.\n"), info->short_name); break; case AO_EOPENFILE: status_error(_("ERROR: Cannot open file %s for writing.\n"), current->filename); break; case AO_EFILEEXISTS: status_error(_("ERROR: File %s already exists.\n"), current->filename); break; default: status_error(_("ERROR: This error should never happen (%d). Panic!\n"), errno); break; } /* We cannot recover from any of these errors */ exit(1); } current = current->next_device; } /* Cleanup argument */ if(reopen_arg->format->matrix) free(reopen_arg->format->matrix); free(reopen_arg->format); free(reopen_arg); } audio_reopen_arg_t *new_audio_reopen_arg (audio_device_t *devices, audio_format_t *fmt) { audio_reopen_arg_t *arg; if ( (arg = calloc(1,sizeof(audio_reopen_arg_t))) == NULL ) { status_error(_("ERROR: Out of memory in new_audio_reopen_arg().\n")); exit(1); } if ( (arg->format = calloc(1,sizeof(audio_format_t))) == NULL ) { status_error(_("ERROR: Out of memory in new_audio_reopen_arg().\n")); exit(1); } arg->devices = devices; /* Copy format in case fmt is recycled later */ *arg->format = *fmt; if(fmt->matrix) arg->format->matrix = strdup(fmt->matrix); return arg; } /* Statistics callbacks */ void print_statistics_action (buf_t *buf, void *arg) { print_statistics_arg_t *stats_arg = (print_statistics_arg_t *) arg; buffer_stats_t *buffer_stats; if (buf != NULL) buffer_stats = buffer_statistics(buf); else buffer_stats = NULL; status_print_statistics(stats_arg->stat_format, buffer_stats, stats_arg->data_source_statistics, stats_arg->decoder_statistics); free(stats_arg->data_source_statistics); free(stats_arg->decoder_statistics); free(stats_arg); free(buffer_stats); } print_statistics_arg_t *new_print_statistics_arg ( stat_format_t *stat_format, data_source_stats_t *data_source_statistics, decoder_stats_t *decoder_statistics) { print_statistics_arg_t *arg; if ( (arg = calloc(1,sizeof(print_statistics_arg_t))) == NULL ) { status_error(_("Error: Out of memory in new_print_statistics_arg().\n")); exit(1); } arg->stat_format = stat_format; arg->data_source_statistics = data_source_statistics; arg->decoder_statistics = decoder_statistics; return arg; } /* Decoder callbacks */ void decoder_error_callback (void *arg, int severity, char *message, ...) { va_list ap; va_start(ap, message); switch (severity) { case ERROR: vstatus_error(message, ap); break; case WARNING: vstatus_message(WARNING_VERBOSITY, message, ap); break; case INFO: vstatus_message(INFO_VERBOSITY, message, ap); break; } va_end(ap); } void decoder_metadata_callback (void *arg, int verbosity, char *message, ...) { va_list ap; va_start(ap, message); vstatus_message(verbosity, message, ap); va_end(ap); } /* ---------------------------------------------------------------------- */ /* These actions are just wrappers for vstatus_message() and vstatus_error() */ typedef struct status_message_arg_t { int verbosity; char *message; } status_message_arg_t; status_message_arg_t *new_status_message_arg (int verbosity) { status_message_arg_t *arg; if ( (arg = calloc(1,sizeof(status_message_arg_t))) == NULL ) { status_error(_("ERROR: Out of memory in new_status_message_arg().\n")); exit(1); } arg->verbosity = verbosity; return arg; } void status_error_action (buf_t *buf, void *arg) { status_message_arg_t *myarg = (status_message_arg_t *) arg; status_error("%s", myarg->message); free(myarg->message); free(myarg); } void status_message_action (buf_t *buf, void *arg) { status_message_arg_t *myarg = (status_message_arg_t *) arg; status_message(myarg->verbosity, "%s", myarg->message); free(myarg->message); free(myarg); } /* -------------------------------------------------------------- */ void decoder_buffered_error_callback (void *arg, int severity, char *message, ...) { va_list ap; buf_t *buf = (buf_t *)arg; status_message_arg_t *sm_arg = new_status_message_arg(0); int n, size = 80; /* Guess we need no more than 80 bytes. */ /* Preformat the string and allocate space for it. This code taken straight from the vsnprintf() man page. We do this here because we might need to reinit ap several times. */ if ((sm_arg->message = calloc (size,1)) == NULL) { status_error(_("Error: Out of memory in decoder_buffered_metadata_callback().\n")); exit(1); } while (1) { /* Try to print in the allocated space. */ va_start(ap, message); n = vsnprintf (sm_arg->message, size, message, ap); va_end(ap); /* If that worked, return the string. */ if (n > -1 && n < size) break; /* Else try again with more space. */ if (n > -1) /* glibc 2.1 */ size = n+1; /* precisely what is needed */ else /* glibc 2.0 */ size *= 2; /* twice the old size */ if ((sm_arg->message = realloc (sm_arg->message, size)) == NULL) { status_error(_("Error: Out of memory in decoder_buffered_metadata_callback().\n")); exit(1); } } switch (severity) { case ERROR: buffer_append_action_at_end(buf, &status_error_action, sm_arg); break; case WARNING: sm_arg->verbosity = WARNING_VERBOSITY; buffer_append_action_at_end(buf, &status_message_action, sm_arg); break; case INFO: sm_arg->verbosity = INFO_VERBOSITY; buffer_append_action_at_end(buf, &status_message_action, sm_arg); break; } } void decoder_buffered_metadata_callback (void *arg, int verbosity, char *message, ...) { va_list ap; buf_t *buf = (buf_t *)arg; status_message_arg_t *sm_arg = new_status_message_arg(0); int n, size = 80; /* Guess we need no more than 80 bytes. */ /* Preformat the string and allocate space for it. This code taken straight from the vsnprintf() man page. We do this here because we might need to reinit ap several times. */ if ((sm_arg->message = calloc (size,1)) == NULL) { status_error(_("ERROR: Out of memory in decoder_buffered_metadata_callback().\n")); exit(1); } while (1) { /* Try to print in the allocated space. */ va_start(ap, message); n = vsnprintf (sm_arg->message, size, message, ap); va_end(ap); /* If that worked, return the string. */ if (n > -1 && n < size) break; /* Else try again with more space. */ if (n > -1) /* glibc 2.1 */ size = n+1; /* precisely what is needed */ else /* glibc 2.0 */ size *= 2; /* twice the old size */ if ((sm_arg->message = realloc (sm_arg->message, size)) == NULL) { status_error(_("ERROR: Out of memory in decoder_buffered_metadata_callback().\n")); exit(1); } } sm_arg->verbosity = verbosity; buffer_append_action_at_end(buf, &status_message_action, sm_arg); }