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decoder_api: move code to _prepare_initial_seek()

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.. and add a few code comments.
This commit is contained in:
Max Kellermann 2011-10-06 00:25:44 +02:00
parent 64b0ba6da7
commit e07073ff28
1 changed files with 35 additions and 11 deletions
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46
src/decoder_api.c
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@ -78,6 +78,40 @@ decoder_initialized(struct decoder *decoder,
&af_string));
}
/**
* Checks if we need an "initial seek". If so, then the initial seek
* is prepared, and the function returns true.
*/
G_GNUC_PURE
static bool
decoder_prepare_initial_seek(struct decoder *decoder)
{
const struct decoder_control *dc = decoder->dc;
assert(dc->pipe != NULL);
if (decoder->initial_seek_running)
/* initial seek has already begun - override any other
command */
return true;
if (decoder->initial_seek_pending) {
if (dc->command == DECODE_COMMAND_NONE) {
/* begin initial seek */
decoder->initial_seek_pending = false;
decoder->initial_seek_running = true;
return true;
}
/* skip initial seek when there's another command
(e.g. STOP) */
decoder->initial_seek_pending = false;
}
return false;
}
/**
* Returns the current decoder command. May return a "virtual"
* synthesized command, e.g. to seek to the beginning of the CUE
@ -90,19 +124,9 @@ decoder_get_virtual_command(struct decoder *decoder)
const struct decoder_control *dc = decoder->dc;
assert(dc->pipe != NULL);
if (decoder->initial_seek_running)
if (decoder_prepare_initial_seek(decoder))
return DECODE_COMMAND_SEEK;
if (decoder->initial_seek_pending) {
if (dc->command == DECODE_COMMAND_NONE) {
decoder->initial_seek_pending = false;
decoder->initial_seek_running = true;
return DECODE_COMMAND_SEEK;
}
decoder->initial_seek_pending = false;
}
return dc->command;
}