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Commit 1c852201 authored by Hans de Goede's avatar Hans de Goede Committed by Mauro Carvalho Chehab
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[media] pwc: Avoid unnecessarily rebuilding the decoder tables 



Signed-off-by: default avatarHans de Goede <hdegoede@redhat.com>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@redhat.com>
parent 938d5b9e

drivers/media/video/pwc/pwc-dec23.c

+6 −0
Original line number Diff line number Diff line
@@ -301,6 +301,9 @@ void pwc_dec23_init(struct pwc_device *pdev, unsigned char *cmd) 


	mutex_init(&pdec->lock);



	if (pdec->last_cmd_valid && pdec->last_cmd == cmd[2])

		return;



	if (DEVICE_USE_CODEC3(pdev->type)) {

		flags = cmd[2] & 0x18;

		if (flags == 8)
@@ -347,6 +350,9 @@ void pwc_dec23_init(struct pwc_device *pdev, unsigned char *cmd) 
	for (i=0; i<MAX_OUTER_CROP_VALUE; i++)

		pwc_crop_table[MAX_OUTER_CROP_VALUE+256+i] = 255;

#endif



	pdec->last_cmd = cmd[2];

	pdec->last_cmd_valid = 1;

}



/*

drivers/media/video/pwc/pwc-dec23.h

+3 −0
Original line number Diff line number Diff line
@@ -31,11 +31,14 @@ struct pwc_dec23_private 
{

	struct mutex lock;



	unsigned char last_cmd, last_cmd_valid;



  unsigned int scalebits;

  unsigned int nbitsmask, nbits; /* Number of bits of a color in the compressed stream */



  unsigned int reservoir;

  unsigned int nbits_in_reservoir;



  const unsigned char *stream;

  int temp_colors[16];