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path: root/drivers/media/video/pwc/pwc-dec23.c
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Diffstat (limited to 'drivers/media/video/pwc/pwc-dec23.c')
-rw-r--r--drivers/media/video/pwc/pwc-dec23.c288
1 files changed, 32 insertions, 256 deletions
diff --git a/drivers/media/video/pwc/pwc-dec23.c b/drivers/media/video/pwc/pwc-dec23.c
index 06a4e877ba4..2c6709112b2 100644
--- a/drivers/media/video/pwc/pwc-dec23.c
+++ b/drivers/media/video/pwc/pwc-dec23.c
@@ -27,7 +27,6 @@
#include "pwc-timon.h"
#include "pwc-kiara.h"
#include "pwc-dec23.h"
-#include <media/pwc-ioctl.h>
#include <linux/string.h>
#include <linux/slab.h>
@@ -51,13 +50,6 @@
# define USE_LOOKUP_TABLE_TO_CLAMP 1
#endif
-/*
- * ENABLE_BAYER_DECODER
- * 0: bayer decoder is not build (save some space)
- * 1: bayer decoder is build and can be used
- */
-#define ENABLE_BAYER_DECODER 0
-
static void build_subblock_pattern(struct pwc_dec23_private *pdec)
{
static const unsigned int initial_values[12] = {
@@ -315,6 +307,8 @@ int pwc_dec23_init(struct pwc_device *pwc, int type, unsigned char *cmd)
}
pdec = pwc->decompress_data;
+ mutex_init(&pdec->lock);
+
if (DEVICE_USE_CODEC3(type)) {
flags = cmd[2] & 0x18;
if (flags == 8)
@@ -467,123 +461,6 @@ static void copy_image_block_CrCb(const int *src, unsigned char *dst, unsigned i
#endif
}
-#if ENABLE_BAYER_DECODER
-/*
- * Format: 8x2 pixels
- * . G . G . G . G . G . G . G
- * . . . . . . . . . . . . . .
- * . G . G . G . G . G . G . G
- * . . . . . . . . . . . . . .
- * or
- * . . . . . . . . . . . . . .
- * G . G . G . G . G . G . G .
- * . . . . . . . . . . . . . .
- * G . G . G . G . G . G . G .
-*/
-static void copy_image_block_Green(const int *src, unsigned char *dst, unsigned int bytes_per_line, unsigned int scalebits)
-{
-#if UNROLL_LOOP_FOR_COPY
- /* Unroll all loops */
- const unsigned char *cm = pwc_crop_table+MAX_OUTER_CROP_VALUE;
- unsigned char *d = dst;
- const int *c = src;
-
- d[0] = cm[c[0] >> scalebits];
- d[2] = cm[c[1] >> scalebits];
- d[4] = cm[c[2] >> scalebits];
- d[6] = cm[c[3] >> scalebits];
- d[8] = cm[c[4] >> scalebits];
- d[10] = cm[c[5] >> scalebits];
- d[12] = cm[c[6] >> scalebits];
- d[14] = cm[c[7] >> scalebits];
-
- d = dst + bytes_per_line;
- d[0] = cm[c[8] >> scalebits];
- d[2] = cm[c[9] >> scalebits];
- d[4] = cm[c[10] >> scalebits];
- d[6] = cm[c[11] >> scalebits];
- d[8] = cm[c[12] >> scalebits];
- d[10] = cm[c[13] >> scalebits];
- d[12] = cm[c[14] >> scalebits];
- d[14] = cm[c[15] >> scalebits];
-#else
- int i;
- unsigned char *d;
- const int *c = src;
-
- d = dst;
- for (i = 0; i < 8; i++, c++)
- d[i*2] = CLAMP((*c) >> scalebits);
-
- d = dst + bytes_per_line;
- for (i = 0; i < 8; i++, c++)
- d[i*2] = CLAMP((*c) >> scalebits);
-#endif
-}
-#endif
-
-#if ENABLE_BAYER_DECODER
-/*
- * Format: 4x4 pixels
- * R . R . R . R
- * . B . B . B .
- * R . R . R . R
- * . B . B . B .
- */
-static void copy_image_block_RedBlue(const int *src, unsigned char *dst, unsigned int bytes_per_line, unsigned int scalebits)
-{
-#if UNROLL_LOOP_FOR_COPY
- /* Unroll all loops */
- const unsigned char *cm = pwc_crop_table+MAX_OUTER_CROP_VALUE;
- unsigned char *d = dst;
- const int *c = src;
-
- d[0] = cm[c[0] >> scalebits];
- d[2] = cm[c[1] >> scalebits];
- d[4] = cm[c[2] >> scalebits];
- d[6] = cm[c[3] >> scalebits];
-
- d = dst + bytes_per_line;
- d[1] = cm[c[4] >> scalebits];
- d[3] = cm[c[5] >> scalebits];
- d[5] = cm[c[6] >> scalebits];
- d[7] = cm[c[7] >> scalebits];
-
- d = dst + bytes_per_line*2;
- d[0] = cm[c[8] >> scalebits];
- d[2] = cm[c[9] >> scalebits];
- d[4] = cm[c[10] >> scalebits];
- d[6] = cm[c[11] >> scalebits];
-
- d = dst + bytes_per_line*3;
- d[1] = cm[c[12] >> scalebits];
- d[3] = cm[c[13] >> scalebits];
- d[5] = cm[c[14] >> scalebits];
- d[7] = cm[c[15] >> scalebits];
-#else
- int i;
- unsigned char *d;
- const int *c = src;
-
- d = dst;
- for (i = 0; i < 4; i++, c++)
- d[i*2] = CLAMP((*c) >> scalebits);
-
- d = dst + bytes_per_line;
- for (i = 0; i < 4; i++, c++)
- d[i*2+1] = CLAMP((*c) >> scalebits);
-
- d = dst + bytes_per_line*2;
- for (i = 0; i < 4; i++, c++)
- d[i*2] = CLAMP((*c) >> scalebits);
-
- d = dst + bytes_per_line*3;
- for (i = 0; i < 4; i++, c++)
- d[i*2+1] = CLAMP((*c) >> scalebits);
-#endif
-}
-#endif
-
/*
* To manage the stream, we keep bits in a 32 bits register.
* fill_nbits(n): fill the reservoir with at least n bits
@@ -775,146 +652,45 @@ static void DecompressBand23(struct pwc_dec23_private *pdec,
}
-#if ENABLE_BAYER_DECODER
-/*
- * Size need to be a multiple of 8 in width
- *
- * Return a block of four line encoded like this:
- *
- * G R G R G R G R G R G R G R G R
- * B G B G B G B G B G B G B G B G
- * G R G R G R G R G R G R G R G R
- * B G B G B G B G B G B G B G B G
- *
- */
-static void DecompressBandBayer(struct pwc_dec23_private *pdec,
- const unsigned char *rawyuv,
- unsigned char *rgbbayer,
- unsigned int compressed_image_width,
- unsigned int real_image_width)
-{
- int compression_index, nblocks;
- const unsigned char *ptable0004;
- const unsigned char *ptable8004;
- unsigned char *dest;
-
- pdec->reservoir = 0;
- pdec->nbits_in_reservoir = 0;
- pdec->stream = rawyuv + 1; /* The first byte of the stream is skipped */
-
- get_nbits(pdec, 4, compression_index);
-
- /* pass 1: uncompress RB component */
- nblocks = compressed_image_width / 4;
-
- ptable0004 = pdec->table_0004_pass1[compression_index];
- ptable8004 = pdec->table_8004_pass1[compression_index];
- dest = rgbbayer;
-
- /* Each block decode a square of 4x4 */
- while (nblocks) {
- decode_block(pdec, ptable0004, ptable8004);
- copy_image_block_RedBlue(pdec->temp_colors, rgbbayer, real_image_width, pdec->scalebits);
- dest += 8;
- nblocks--;
- }
-
- /* pass 2: uncompress G component */
- nblocks = compressed_image_width / 8;
-
- ptable0004 = pdec->table_0004_pass2[compression_index];
- ptable8004 = pdec->table_8004_pass2[compression_index];
-
- /* Each block decode a square of 4x4 */
- while (nblocks) {
- decode_block(pdec, ptable0004, ptable8004);
- copy_image_block_Green(pdec->temp_colors, rgbbayer+1, real_image_width, pdec->scalebits);
-
- decode_block(pdec, ptable0004, ptable8004);
- copy_image_block_Green(pdec->temp_colors, rgbbayer+real_image_width, real_image_width, pdec->scalebits);
-
- rgbbayer += 16;
- nblocks -= 2;
- }
-}
-#endif
-
-
/**
*
* Uncompress a pwc23 buffer.
*
- * pwc.view: size of the image wanted
- * pwc.image: size of the image returned by the camera
- * pwc.offset: (x,y) to displayer image in the view
- *
* src: raw data
* dst: image output
- * flags: PWCX_FLAG_PLANAR or PWCX_FLAG_BAYER
*/
void pwc_dec23_decompress(const struct pwc_device *pwc,
const void *src,
- void *dst,
- int flags)
+ void *dst)
{
- int bandlines_left, stride, bytes_per_block;
-
- bandlines_left = pwc->image.y / 4;
- bytes_per_block = pwc->view.x * 4;
-
- if (flags & PWCX_FLAG_BAYER) {
-#if ENABLE_BAYER_DECODER
- /* RGB Bayer format */
- unsigned char *rgbout;
-
- stride = pwc->view.x * pwc->offset.y;
- rgbout = dst + stride + pwc->offset.x;
-
-
- while (bandlines_left--) {
-
- DecompressBandBayer(pwc->decompress_data,
- src,
- rgbout,
- pwc->image.x, pwc->view.x);
-
- src += pwc->vbandlength;
- rgbout += bytes_per_block;
-
- }
-#else
- memset(dst, 0, pwc->view.x * pwc->view.y);
-#endif
-
- } else {
- /* YUV420P image format */
- unsigned char *pout_planar_y;
- unsigned char *pout_planar_u;
- unsigned char *pout_planar_v;
- unsigned int plane_size;
-
- plane_size = pwc->view.x * pwc->view.y;
-
- /* offset in Y plane */
- stride = pwc->view.x * pwc->offset.y;
- pout_planar_y = dst + stride + pwc->offset.x;
-
- /* offsets in U/V planes */
- stride = (pwc->view.x * pwc->offset.y) / 4 + pwc->offset.x / 2;
- pout_planar_u = dst + plane_size + stride;
- pout_planar_v = dst + plane_size + plane_size / 4 + stride;
-
- while (bandlines_left--) {
-
- DecompressBand23(pwc->decompress_data,
- src,
- pout_planar_y, pout_planar_u, pout_planar_v,
- pwc->image.x, pwc->view.x);
- src += pwc->vbandlength;
- pout_planar_y += bytes_per_block;
- pout_planar_u += pwc->view.x;
- pout_planar_v += pwc->view.x;
-
- }
+ int bandlines_left, bytes_per_block;
+ struct pwc_dec23_private *pdec = pwc->decompress_data;
+
+ /* YUV420P image format */
+ unsigned char *pout_planar_y;
+ unsigned char *pout_planar_u;
+ unsigned char *pout_planar_v;
+ unsigned int plane_size;
+
+ mutex_lock(&pdec->lock);
+
+ bandlines_left = pwc->height / 4;
+ bytes_per_block = pwc->width * 4;
+ plane_size = pwc->height * pwc->width;
+
+ pout_planar_y = dst;
+ pout_planar_u = dst + plane_size;
+ pout_planar_v = dst + plane_size + plane_size / 4;
+
+ while (bandlines_left--) {
+ DecompressBand23(pwc->decompress_data,
+ src,
+ pout_planar_y, pout_planar_u, pout_planar_v,
+ pwc->width, pwc->width);
+ src += pwc->vbandlength;
+ pout_planar_y += bytes_per_block;
+ pout_planar_u += pwc->width;
+ pout_planar_v += pwc->width;
}
+ mutex_unlock(&pdec->lock);
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-30 09:42:29 +0000