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Subject[PATCH] 2.6.8 zr36067 driver - correct jpeg app/com marker writeout
From
Date
Hi,

attached patch fixes the writing of APP (application-specific) and COM
(comment) markers in the JPEG stream as generated by the zr36050 or
zr36060 encoders, both part of the zr36067 driver. During separating
those bits out of the main zoran driver, we accidently removed the
interface through which applications can adapt those markers, replacing
them by unchangeable (static) markers. Some video formats, particularly
Quicktime and AVI, require specific container-specific markers in the
stream for interlaced streams. Those markers specify field order and
such. The attached patch re-adds this feature so that decoders depending
on those container-specific markers for correct playback will work
correctly.

Thanks,

Ronald

Signed-off-by: Ronald S. Bultje <rbultje@ronald.bitfreak.net>

--
Ronald S. Bultje <rbultje@ronald.bitfreak.net>
Index: linux/drivers/media/video/zoran_device.c
--- linux~zoran-appcom-jpeg-marker/drivers/media/video/zoran_device.c 2004-08-29 18:33:37.000000000 +0200
+++ linux/drivers/media/video/zoran_device.c 2004-09-01 22:26:44.000000000 +0200
@@ -1033,7 +1033,10 @@

switch (mode) {

- case BUZ_MODE_MOTION_COMPRESS:
+ case BUZ_MODE_MOTION_COMPRESS: {
+ struct jpeg_app_marker app;
+ struct jpeg_com_marker com;
+
/* In motion compress mode, the decoder output must be enabled, and
* the video bus direction set to input.
*/
@@ -1043,6 +1046,19 @@

/* Take the JPEG codec and the VFE out of sleep */
jpeg_codec_sleep(zr, 0);
+
+ /* set JPEG app/com marker */
+ app.appn = zr->jpg_settings.jpg_comp.APPn;
+ app.len = zr->jpg_settings.jpg_comp.APP_len;
+ memcpy(app.data, zr->jpg_settings.jpg_comp.APP_data, 60);
+ zr->codec->control(zr->codec, CODEC_S_JPEG_APP_DATA,
+ sizeof(struct jpeg_app_marker), &app);
+
+ com.len = zr->jpg_settings.jpg_comp.COM_len;
+ memcpy(com.data, zr->jpg_settings.jpg_comp.COM_data, 60);
+ zr->codec->control(zr->codec, CODEC_S_JPEG_COM_DATA,
+ sizeof(struct jpeg_com_marker), &com);
+
/* Setup the JPEG codec */
zr->codec->control(zr->codec, CODEC_S_JPEG_TDS_BYTE,
sizeof(int), &field_size);
@@ -1066,6 +1082,7 @@
dprintk(2, KERN_INFO "%s: enable_jpg(MOTION_COMPRESS)\n",
ZR_DEVNAME(zr));
break;
+ }

case BUZ_MODE_MOTION_DECOMPRESS:
/* In motion decompression mode, the decoder output must be disabled, and
Index: linux/drivers/media/video/videocodec.h
--- linux~zoran-appcom-jpeg-marker/drivers/media/video/videocodec.h 2004-08-14 12:55:19.000000000 +0200
+++ linux/drivers/media/video/videocodec.h 2004-09-01 22:26:44.000000000 +0200
@@ -248,6 +248,17 @@
u16 Wt, Wa, HStart, HSyncStart, Ht, Ha, VStart;
};

+struct jpeg_com_marker {
+ int len; /* number of usable bytes in data */
+ char data[60];
+};
+
+struct jpeg_app_marker {
+ int appn; /* number app segment */
+ int len; /* number of usable bytes in data */
+ char data[60];
+};
+
struct videocodec {
struct module *owner;
/* -- filled in by slave device during register -- */
Index: linux/drivers/media/video/zr36050.c
--- linux~zoran-appcom-jpeg-marker/drivers/media/video/zr36050.c 2004-08-14 12:55:33.000000000 +0200
+++ linux/drivers/media/video/zr36050.c 2004-09-01 22:26:44.000000000 +0200
@@ -325,32 +325,6 @@
0xF9, 0xFA
};

-static const char zr36050_app[0x40] = {
- 0xff, 0xe0, //Marker: APP0
- 0x00, 0x3e, //Length: 60+2
- ' ', 'A', 'V', 'I', '1', 0, 0, 0, // 'AVI' field
- 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0
-};
-
-static const char zr36050_com[0x40] = {
- 0xff, 0xfe, //Marker: COM
- 0x00, 0x3e, //Length: 60+2
- ' ', 'C', 'O', 'M', 0, 0, 0, 0, // 'COM' field
- 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0
-};
-
/* jpeg baseline setup, this is just fixed in this driver (YUV pictures) */
#define NO_OF_COMPONENTS 0x3 //Y,U,V
#define BASELINE_PRECISION 0x8 //MCU size (?)
@@ -499,10 +473,18 @@
sizeof(zr36050_dqt), zr36050_dqt);
sum += zr36050_pushit(ptr, ZR050_DHT_IDX,
sizeof(zr36050_dht), zr36050_dht);
- sum += zr36050_pushit(ptr, ZR050_APP_IDX,
- sizeof(zr36050_app), zr36050_app);
- sum += zr36050_pushit(ptr, ZR050_COM_IDX,
- sizeof(zr36050_com), zr36050_com);
+ zr36050_write(ptr, ZR050_APP_IDX, 0xff);
+ zr36050_write(ptr, ZR050_APP_IDX + 1, 0xe0 + ptr->app.appn);
+ zr36050_write(ptr, ZR050_APP_IDX + 2, 0x00);
+ zr36050_write(ptr, ZR050_APP_IDX + 3, ptr->app.len + 2);
+ sum += zr36050_pushit(ptr, ZR050_APP_IDX + 4, 60,
+ ptr->app.data) + 4;
+ zr36050_write(ptr, ZR050_COM_IDX, 0xff);
+ zr36050_write(ptr, ZR050_COM_IDX + 1, 0xfe);
+ zr36050_write(ptr, ZR050_COM_IDX + 2, 0x00);
+ zr36050_write(ptr, ZR050_COM_IDX + 3, ptr->com.len + 2);
+ sum += zr36050_pushit(ptr, ZR050_COM_IDX + 4, 60,
+ ptr->com.data) + 4;

/* do the internal huffman table preload */
zr36050_write(ptr, ZR050_MARKERS_EN, ZR050_ME_DHTI);
@@ -553,8 +535,9 @@

/* this headers seem to deliver "valid AVI" jpeg frames */
zr36050_write(ptr, ZR050_MARKERS_EN,
- ZR050_ME_APP | ZR050_ME_DQT | ZR050_ME_DHT |
- ZR050_ME_COM);
+ ZR050_ME_DQT | ZR050_ME_DHT |
+ ((ptr->app.len > 0) ? ZR050_ME_APP : 0) |
+ ((ptr->com.len > 0) ? ZR050_ME_COM : 0));
} else {
dprintk(2, "%s: EXPANSION SETUP\n", ptr->name);

@@ -733,6 +716,47 @@
return -EFAULT;
ptr->scalefact = *ival;
break;
+
+ case CODEC_G_JPEG_APP_DATA: { /* get appn marker data */
+ struct jpeg_app_marker *app = data;
+
+ if (size != sizeof(struct jpeg_app_marker))
+ return -EFAULT;
+
+ *app = ptr->app;
+ break;
+ }
+
+ case CODEC_S_JPEG_APP_DATA: { /* set appn marker data */
+ struct jpeg_app_marker *app = data;
+
+ if (size != sizeof(struct jpeg_app_marker))
+ return -EFAULT;
+
+ ptr->app = *app;
+ break;
+ }
+
+ case CODEC_G_JPEG_COM_DATA: { /* get comment marker data */
+ struct jpeg_com_marker *com = data;
+
+ if (size != sizeof(struct jpeg_com_marker))
+ return -EFAULT;
+
+ *com = ptr->com;
+ break;
+ }
+
+ case CODEC_S_JPEG_COM_DATA: { /* set comment marker data */
+ struct jpeg_com_marker *com = data;
+
+ if (size != sizeof(struct jpeg_com_marker))
+ return -EFAULT;
+
+ ptr->com = *com;
+ break;
+ }
+
default:
return -EINVAL;
}
@@ -821,6 +845,12 @@
ptr->max_block_vol = 240;
ptr->scalefact = 0x100;
ptr->dri = 1;
+
+ /* no app/com marker by default */
+ ptr->app.appn = 0;
+ ptr->app.len = 0;
+ ptr->com.len = 0;
+
zr36050_init(ptr);

dprintk(1, KERN_INFO "%s: codec attached and running\n",
Index: linux/drivers/media/video/zr36050.h
--- linux~zoran-appcom-jpeg-marker/drivers/media/video/zr36050.h 2004-08-14 12:54:51.000000000 +0200
+++ linux/drivers/media/video/zr36050.h 2004-09-01 22:26:44.000000000 +0200
@@ -27,6 +27,8 @@
#ifndef ZR36050_H
#define ZR36050_H

+#include "videocodec.h"
+
/* data stored for each zoran jpeg codec chip */
struct zr36050 {
char name[32];
@@ -51,6 +53,10 @@
__u8 v_samp_ratio[8];
__u16 scalefact;
__u16 dri;
+
+ /* com/app marker */
+ struct jpeg_com_marker com;
+ struct jpeg_app_marker app;
};

/* zr36050 register addresses */
Index: linux/drivers/media/video/zr36060.h
--- linux~zoran-appcom-jpeg-marker/drivers/media/video/zr36060.h 2004-08-14 12:54:50.000000000 +0200
+++ linux/drivers/media/video/zr36060.h 2004-09-01 22:26:44.000000000 +0200
@@ -27,6 +27,8 @@
#ifndef ZR36060_H
#define ZR36060_H

+#include "videocodec.h"
+
/* data stored for each zoran jpeg codec chip */
struct zr36060 {
char name[32];
@@ -51,6 +53,10 @@
__u8 v_samp_ratio[8];
__u16 scalefact;
__u16 dri;
+
+ /* app/com marker data */
+ struct jpeg_app_marker app;
+ struct jpeg_com_marker com;
};

/* ZR36060 register addresses */
Index: linux/drivers/media/video/zr36060.c
--- linux~zoran-appcom-jpeg-marker/drivers/media/video/zr36060.c 2004-08-14 12:55:47.000000000 +0200
+++ linux/drivers/media/video/zr36060.c 2004-09-01 22:26:44.000000000 +0200
@@ -315,32 +315,6 @@
0xF9, 0xFA
};

-static const char zr36060_app[0x40] = {
- 0xff, 0xe0, //Marker: APP0
- 0x00, 0x07, //Length: 7
- ' ', 'A', 'V', 'I', '1', 0, 0, 0, // 'AVI' field
- 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0
-};
-
-static const char zr36060_com[0x40] = {
- 0xff, 0xfe, //Marker: COM
- 0x00, 0x06, //Length: 6
- ' ', 'C', 'O', 'M', 0, 0, 0, 0, // 'COM' field
- 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0
-};
-
/* jpeg baseline setup, this is just fixed in this driver (YUV pictures) */
#define NO_OF_COMPONENTS 0x3 //Y,U,V
#define BASELINE_PRECISION 0x8 //MCU size (?)
@@ -498,12 +472,18 @@
sum +=
zr36060_pushit(ptr, ZR060_DHT_IDX, sizeof(zr36060_dht),
zr36060_dht);
- sum +=
- zr36060_pushit(ptr, ZR060_APP_IDX, sizeof(zr36060_app),
- zr36060_app);
- sum +=
- zr36060_pushit(ptr, ZR060_COM_IDX, sizeof(zr36060_com),
- zr36060_com);
+ zr36060_write(ptr, ZR060_APP_IDX, 0xff);
+ zr36060_write(ptr, ZR060_APP_IDX + 1, 0xe0 + ptr->app.appn);
+ zr36060_write(ptr, ZR060_APP_IDX + 2, 0x00);
+ zr36060_write(ptr, ZR060_APP_IDX + 3, ptr->app.len + 2);
+ sum += zr36060_pushit(ptr, ZR060_APP_IDX + 4, 60,
+ ptr->app.data) + 4;
+ zr36060_write(ptr, ZR060_COM_IDX, 0xff);
+ zr36060_write(ptr, ZR060_COM_IDX + 1, 0xfe);
+ zr36060_write(ptr, ZR060_COM_IDX + 2, 0x00);
+ zr36060_write(ptr, ZR060_COM_IDX + 3, ptr->com.len + 2);
+ sum += zr36060_pushit(ptr, ZR060_COM_IDX + 4, 60,
+ ptr->com.data) + 4;

/* setup misc. data for compression (target code sizes) */

@@ -535,8 +515,9 @@

/* JPEG markers to be included in the compressed stream */
zr36060_write(ptr, ZR060_MER,
- ZR060_MER_App | ZR060_MER_Com | ZR060_MER_DQT
- | ZR060_MER_DHT);
+ ZR060_MER_DQT | ZR060_MER_DHT |
+ ((ptr->com.len > 0) ? ZR060_MER_Com : 0) |
+ ((ptr->app.len > 0) ? ZR060_MER_App : 0));

/* Setup the Video Frontend */
/* Limit pixel range to 16..235 as per CCIR-601 */
@@ -841,6 +822,47 @@
return -EFAULT;
ptr->scalefact = *ival;
break;
+
+ case CODEC_G_JPEG_APP_DATA: { /* get appn marker data */
+ struct jpeg_app_marker *app = data;
+
+ if (size != sizeof(struct jpeg_app_marker))
+ return -EFAULT;
+
+ *app = ptr->app;
+ break;
+ }
+
+ case CODEC_S_JPEG_APP_DATA: { /* set appn marker data */
+ struct jpeg_app_marker *app = data;
+
+ if (size != sizeof(struct jpeg_app_marker))
+ return -EFAULT;
+
+ ptr->app = *app;
+ break;
+ }
+
+ case CODEC_G_JPEG_COM_DATA: { /* get comment marker data */
+ struct jpeg_com_marker *com = data;
+
+ if (size != sizeof(struct jpeg_com_marker))
+ return -EFAULT;
+
+ *com = ptr->com;
+ break;
+ }
+
+ case CODEC_S_JPEG_COM_DATA: { /* set comment marker data */
+ struct jpeg_com_marker *com = data;
+
+ if (size != sizeof(struct jpeg_com_marker))
+ return -EFAULT;
+
+ ptr->com = *com;
+ break;
+ }
+
default:
return -EINVAL;
}
@@ -930,6 +952,12 @@
ptr->max_block_vol = 240; /* CHECKME, was 120 is 240 */
ptr->scalefact = 0x100;
ptr->dri = 1; /* CHECKME, was 8 is 1 */
+
+ /* by default, no COM or APP markers - app should set those */
+ ptr->com.len = 0;
+ ptr->app.appn = 0;
+ ptr->app.len = 0;
+
zr36060_init(ptr);

dprintk(1, KERN_INFO "%s: codec attached and running\n",
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