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player_thread: add helper function player_dc_at_next_song() 

Some abstraction for decoder_control.pipe access.
This commit is contained in:
Max Kellermann 2010-11-05 19:08:54 +01:00
parent c594afeee7
commit 5223261f19
1 changed files with 33 additions and 6 deletions
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39
src/player_thread.c
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@ -118,6 +118,33 @@ static void player_command_finished(void)
notify_signal(&main_notify);
}
/**
* Is the decoder still busy on the same song as the player?
*
* Note: this function does not check if the decoder is already
* finished.
*/
static bool
player_dc_at_current_song(const struct player *player)
{
assert(player != NULL);
assert(player->pipe != NULL);
return dc.pipe == player->pipe;
}
/**
* Has the decoder already begun decoding the next song?
*
* Note: this function does not check if the decoder is already
* finished.
*/
static bool
player_dc_at_next_song(const struct player *player)
{
return dc.pipe != NULL && !player_dc_at_current_song(player);
}
/**
* Stop the decoder and clears (and frees) its music pipe.
*/
@ -364,7 +391,7 @@ static void player_process_command(struct player *player)
case PLAYER_COMMAND_QUEUE:
assert(pc.next_song != NULL);
assert(!player->queued);
assert(dc.pipe == NULL || dc.pipe == player->pipe);
assert(!player_dc_at_next_song(player));
player->queued = true;
player_command_finished();
@ -409,7 +436,7 @@ static void player_process_command(struct player *player)
return;
}
if (dc.pipe != NULL && dc.pipe != player->pipe)
if (player_dc_at_next_song(player))
/* the decoder is already decoding the song -
stop it and reset the position */
player_dc_stop(player);
@ -505,7 +532,7 @@ play_next_chunk(struct player *player)
return true;
if (player->xfade == XFADE_ENABLED &&
dc.pipe != NULL && dc.pipe != player->pipe &&
player_dc_at_next_song(player) &&
(cross_fade_position = music_pipe_size(player->pipe))
<= player->cross_fade_chunks) {
/* perform cross fade */
@ -706,14 +733,14 @@ static void do_play(void)
/* the decoder has finished the current song;
make it decode the next song */
assert(pc.next_song != NULL);
assert(dc.pipe == NULL || dc.pipe == player.pipe);
assert(!player_dc_at_next_song(&player));
player.queued = false;
dc.pipe = music_pipe_new();
dc_start_async(pc.next_song);
}
if (dc.pipe != NULL && dc.pipe != player.pipe &&
if (player_dc_at_next_song(&player) &&
player.xfade == XFADE_UNKNOWN &&
!decoder_is_starting()) {
/* enable cross fading in this song? if yes,
@ -748,7 +775,7 @@ static void do_play(void)
/* XXX synchronize in a better way */
g_usleep(10000);
} else if (dc.pipe != NULL && dc.pipe != player.pipe) {
} else if (player_dc_at_next_song(&player)) {
/* at the beginning of a new song */
if (!player_song_border(&player))