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hdspmixer: Handle preset files used in 1.0.24 and 1.0.24.1

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As an addition to the previous commit, let's also cover the 3rd case
when a preset file was written with hdspmixer v1.0.24 or v1.0.24.1.

In this case, no magic header will be present, but the file size would
differ from the pre 1.0.24 format.

Signed-off-by: Adrian Knoth <adi@drcomp.erfurt.thur.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Adrian Knoth 2011-04-08 19:58:37 +02:00 • committed by Takashi Iwai
parent 7c6912449a
commit cb40769c93
1 changed files with 18 additions and 1 deletions
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19
hdspmixer/src/HDSPMixerWindow.cxx
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@ -499,7 +499,24 @@ void HDSPMixerWindow::load()
pan_array_size = HDSP_MAX_DEST;
channels_per_card = HDSP_MAX_CHANNELS;
} else {
/* old format, rewind to the start and simply read all data */
/* There are two different kinds of old format: pre 1.0.24 and
* the one used for 1.0.24/1.0.24.1. We can distinguish between
* these two by checking the file size, becase HDSP_MAX_CHANNELS
* was bumped right before the 1.0.24 release.
*/
fseek (file, 0, SEEK_END);
long filesize = ftell (file);
if (1163808 == filesize) {
/* file written by hdspmixer v1.0.24 or v1.0.24.1 with
* HDSP_MAX_CHANNELS set to 64, but pan_array_size still at
* 14, so setting channels_per_card should get the correct
* mapping.
*/
channels_per_card = 64; /* HDSP_MAX_CHANNELS */
}
/* rewind to the start and simply read all data */
rewind(file);
}