/* return 1 on success, 0 on failure */
int play_frame(void)
{
unsigned char *audio;
int mc;
size_t bytes;
debug("play_frame");
/* The first call will not decode anything but return MPG123_NEW_FORMAT! */
mc = mpg123_decode_frame(mh, &framenum, &audio, &bytes);
/* Play what is there to play (starting with second decode_frame call!) */
if(bytes)
{
if(param.frame_number > -1) --frames_left;
if(fresh && framenum >= param.start_frame)
{
fresh = FALSE;
}
/* Normal flushing of data, includes buffer decoding. */
if(flush_output(ao, audio, bytes) < (int)bytes && !intflag)
{
error("Deep trouble! Cannot flush to my output anymore!");
safe_exit(133);
}
if(param.checkrange)
{
long clip = mpg123_clip(mh);
if(clip > 0) fprintf(stderr,"%ld samples clipped\n", clip);
}
}
/* Special actions and errors. */
if(mc != MPG123_OK)
{
if(mc == MPG123_ERR || mc == MPG123_DONE)
{
if(mc == MPG123_ERR) error1("...in decoding next frame: %s", mpg123_strerror(mh));
return 0;
}
if(mc == MPG123_NO_SPACE)
{
error("I have not enough output space? I didn't plan for this.");
return 0;
}
if(mc == MPG123_NEW_FORMAT)
{
long rate;
int channels, format;
mpg123_getformat(mh, &rate, &channels, &format);
if(param.verbose > 2) fprintf(stderr, "\nNote: New output format %liHz %ich, format %i\n", rate, channels, format);
if(!param.quiet)
{
fprintf(stderr, "\n");
if(param.verbose) print_header(mh);
else print_header_compact(mh);
}
reset_audio(rate, channels, format);
}
}
return 1;
}
static void term_handle_key(mpg123_handle *fr, out123_handle *ao, char val)
{
debug1("term_handle_key: %c", val);
switch(tolower(val))
{
case MPG123_BACK_KEY:
out123_pause(ao);
out123_drop(ao);
if(paused) pause_cycle=(int)(LOOP_CYCLES/mpg123_tpf(fr));
if(mpg123_seek_frame(fr, 0, SEEK_SET) < 0)
error1("Seek to begin failed: %s", mpg123_strerror(fr));
framenum=0;
break;
case MPG123_NEXT_KEY:
out123_pause(ao);
out123_drop(ao);
next_track();
break;
case MPG123_NEXT_DIR_KEY:
out123_pause(ao);
out123_drop(ao);
next_dir();
break;
case MPG123_QUIT_KEY:
debug("QUIT");
if(stopped)
{
stopped = 0;
out123_pause(ao); /* no chance for annoying underrun warnings */
out123_drop(ao);
}
set_intflag();
offset = 0;
break;
case MPG123_PAUSE_KEY:
paused=1-paused;
out123_pause(ao); /* underrun awareness */
out123_drop(ao);
if(paused)
{
/* Not really sure if that is what is wanted
This jumps in audio output, but has direct reaction to pausing loop. */
out123_param_float(ao, OUT123_PRELOAD, 0.);
pause_recycle(fr);
}
else
out123_param_float(ao, OUT123_PRELOAD, param.preload);
if(stopped)
stopped=0;
if(param.verbose)
print_stat(fr, 0, ao);
else
fprintf(stderr, "%s", (paused) ? MPG123_PAUSED_STRING : MPG123_EMPTY_STRING);
break;
case MPG123_STOP_KEY:
case ' ':
/* TODO: Verify/ensure that there is no "chirp from the past" when
seeking while stopped. */
stopped=1-stopped;
if(paused) {
paused=0;
offset -= pause_cycle;
}
if(stopped)
out123_pause(ao);
else
{
if(offset) /* If position changed, old is outdated. */
out123_drop(ao);
/* No out123_continue(), that's triggered by out123_play(). */
}
if(param.verbose)
print_stat(fr, 0, ao);
else
fprintf(stderr, "%s", (stopped) ? MPG123_STOPPED_STRING : MPG123_EMPTY_STRING);
break;
case MPG123_FINE_REWIND_KEY:
seekmode(fr, ao);
offset--;
break;
case MPG123_FINE_FORWARD_KEY:
seekmode(fr, ao);
offset++;
break;
case MPG123_REWIND_KEY:
seekmode(fr, ao);
offset-=10;
break;
case MPG123_FORWARD_KEY:
seekmode(fr, ao);
offset+=10;
break;
case MPG123_FAST_REWIND_KEY:
seekmode(fr, ao);
offset-=50;
break;
case MPG123_FAST_FORWARD_KEY:
seekmode(fr, ao);
offset+=50;
break;
case MPG123_VOL_UP_KEY:
mpg123_volume_change(fr, 0.02);
break;
case MPG123_VOL_DOWN_KEY:
mpg123_volume_change(fr, -0.02);
break;
case MPG123_PITCH_UP_KEY:
case MPG123_PITCH_BUP_KEY:
case MPG123_PITCH_DOWN_KEY:
case MPG123_PITCH_BDOWN_KEY:
case MPG123_PITCH_ZERO_KEY:
{
double new_pitch = param.pitch;
switch(val) /* Not tolower here! */
{
case MPG123_PITCH_UP_KEY: new_pitch += MPG123_PITCH_VAL; break;
case MPG123_PITCH_BUP_KEY: new_pitch += MPG123_PITCH_BVAL; break;
case MPG123_PITCH_DOWN_KEY: new_pitch -= MPG123_PITCH_VAL; break;
case MPG123_PITCH_BDOWN_KEY: new_pitch -= MPG123_PITCH_BVAL; break;
case MPG123_PITCH_ZERO_KEY: new_pitch = 0.0; break;
}
set_pitch(fr, ao, new_pitch);
fprintf(stderr, "New pitch: %f\n", param.pitch);
}
break;
case MPG123_VERBOSE_KEY:
param.verbose++;
if(param.verbose > VERBOSE_MAX)
{
param.verbose = 0;
clear_stat();
}
mpg123_param(fr, MPG123_VERBOSE, param.verbose, 0);
break;
case MPG123_RVA_KEY:
if(++param.rva > MPG123_RVA_MAX) param.rva = 0;
if(param.verbose)
fprintf(stderr, "\n");
mpg123_param(fr, MPG123_RVA, param.rva, 0);
mpg123_volume_change(fr, 0.);
break;
case MPG123_PREV_KEY:
out123_pause(ao);
out123_drop(ao);
prev_track();
break;
case MPG123_PREV_DIR_KEY:
out123_pause(ao);
out123_drop(ao);
prev_dir();
break;
case MPG123_PLAYLIST_KEY:
fprintf(stderr, "%s\nPlaylist (\">\" indicates current track):\n", param.verbose ? "\n" : "");
print_playlist(stderr, 1);
fprintf(stderr, "\n");
break;
case MPG123_TAG_KEY:
fprintf(stderr, "%s\n", param.verbose ? "\n" : "");
print_id3_tag(fr, param.long_id3, stderr);
fprintf(stderr, "\n");
break;
case MPG123_MPEG_KEY:
if(param.verbose) print_stat(fr,0,ao); /* Make sure that we are talking about the correct frame. */
fprintf(stderr, "\n");
if(param.verbose > 1)
print_header(fr);
else
print_header_compact(fr);
fprintf(stderr, "\n");
break;
case MPG123_HELP_KEY:
{ /* This is more than the one-liner before, but it's less spaghetti. */
int i;
fprintf(stderr,"\n\n -= terminal control keys =-\n");
for(i=0; i<(sizeof(term_help)/sizeof(struct keydef)); ++i)
{
if(term_help[i].key2) fprintf(stderr, "[%c] or [%c]", term_help[i].key, term_help[i].key2);
else fprintf(stderr, "[%c]", term_help[i].key);
fprintf(stderr, "\t%s\n", term_help[i].desc);
}
fprintf(stderr, "\nAlso, the number row (starting at 1, ending at 0) gives you jump points into the current track at 10%% intervals.\n");
fprintf(stderr, "\n");
}
break;
case MPG123_FRAME_INDEX_KEY:
case MPG123_VARIOUS_INFO_KEY:
if(param.verbose) fprintf(stderr, "\n");
switch(val) /* because of tolower() ... */
{
case MPG123_FRAME_INDEX_KEY:
print_index(fr);
{
long accurate;
if(mpg123_getstate(fr, MPG123_ACCURATE, &accurate, NULL) == MPG123_OK)
fprintf(stderr, "Accurate position: %s\n", (accurate == 0 ? "no" : "yes"));
else
error1("Unable to get state: %s", mpg123_strerror(fr));
}
break;
case MPG123_VARIOUS_INFO_KEY:
{
const char* curdec = mpg123_current_decoder(fr);
if(curdec == NULL) fprintf(stderr, "Cannot get decoder info!\n");
else fprintf(stderr, "Active decoder: %s\n", curdec);
}
}
break;
case '0':
case '1':
case '2':
case '3':
case '4':
case '5':
case '6':
case '7':
case '8':
case '9':
{
off_t len;
int num;
num = val == '0' ? 10 : val - '0';
--num; /* from 0 to 9 */
/* Do not swith to seekmode() here, as we are jumping once to a
specific position. Dropping buffer contents is enough and there
is no race filling the buffer or waiting for more incremental
seek orders. */
len = mpg123_length(fr);
out123_pause(ao);
out123_drop(ao);
if(len > 0)
mpg123_seek(fr, (off_t)( (num/10.)*len ), SEEK_SET);
}
break;
case MPG123_BOOKMARK_KEY:
continue_msg("BOOKMARK");
break;
default:
;
}
}
