#include <linux/poll.h>
#include <linux/i2c.h>
#include <linux/types.h>
-#include <linux/videodev.h>
+#include <linux/videodev2.h>
+#include <media/v4l2-common.h>
#include <linux/init.h>
+#include <linux/crc32.h>
-#include <media/id.h>
-#include <media/saa6752hs.h>
+
+#define MPEG_VIDEO_TARGET_BITRATE_MAX 27000
+#define MPEG_VIDEO_MAX_BITRATE_MAX 27000
+#define MPEG_TOTAL_TARGET_BITRATE_MAX 27000
+#define MPEG_PID_MAX ((1 << 14) - 1)
/* Addresses to scan */
static unsigned short normal_i2c[] = {0x20, I2C_CLIENT_END};
-static unsigned short normal_i2c_range[] = {I2C_CLIENT_END};
I2C_CLIENT_INSMOD;
MODULE_DESCRIPTION("device driver for saa6752hs MPEG2 encoder");
static struct i2c_driver driver;
static struct i2c_client client_template;
+enum saa6752hs_videoformat {
+ SAA6752HS_VF_D1 = 0, /* standard D1 video format: 720x576 */
+ SAA6752HS_VF_2_3_D1 = 1,/* 2/3D1 video format: 480x576 */
+ SAA6752HS_VF_1_2_D1 = 2,/* 1/2D1 video format: 352x576 */
+ SAA6752HS_VF_SIF = 3, /* SIF video format: 352x288 */
+ SAA6752HS_VF_UNKNOWN,
+};
+
+struct saa6752hs_mpeg_params {
+ /* transport streams */
+ __u16 ts_pid_pmt;
+ __u16 ts_pid_audio;
+ __u16 ts_pid_video;
+ __u16 ts_pid_pcr;
+
+ /* audio */
+ enum v4l2_mpeg_audio_l2_bitrate au_l2_bitrate;
+
+ /* video */
+ enum v4l2_mpeg_video_aspect vi_aspect;
+ enum v4l2_mpeg_video_bitrate_mode vi_bitrate_mode;
+ __u32 vi_bitrate;
+ __u32 vi_bitrate_peak;
+};
+
+static const struct v4l2_format v4l2_format_table[] =
+{
+ [SAA6752HS_VF_D1] =
+ { .fmt = { .pix = { .width = 720, .height = 576 }}},
+ [SAA6752HS_VF_2_3_D1] =
+ { .fmt = { .pix = { .width = 480, .height = 576 }}},
+ [SAA6752HS_VF_1_2_D1] =
+ { .fmt = { .pix = { .width = 352, .height = 576 }}},
+ [SAA6752HS_VF_SIF] =
+ { .fmt = { .pix = { .width = 352, .height = 288 }}},
+ [SAA6752HS_VF_UNKNOWN] =
+ { .fmt = { .pix = { .width = 0, .height = 0}}},
+};
+
+struct saa6752hs_state {
+ struct i2c_client client;
+ struct v4l2_mpeg_compression old_params;
+ struct saa6752hs_mpeg_params params;
+ enum saa6752hs_videoformat video_format;
+ v4l2_std_id standard;
+};
enum saa6752hs_command {
SAA6752HS_COMMAND_RESET = 0,
- SAA6752HS_COMMAND_STOP = 1,
- SAA6752HS_COMMAND_START = 2,
- SAA6752HS_COMMAND_PAUSE = 3,
- SAA6752HS_COMMAND_RECONFIGURE = 4,
- SAA6752HS_COMMAND_SLEEP = 5,
+ SAA6752HS_COMMAND_STOP = 1,
+ SAA6752HS_COMMAND_START = 2,
+ SAA6752HS_COMMAND_PAUSE = 3,
+ SAA6752HS_COMMAND_RECONFIGURE = 4,
+ SAA6752HS_COMMAND_SLEEP = 5,
SAA6752HS_COMMAND_RECONFIGURE_FORCE = 6,
-
+
SAA6752HS_COMMAND_MAX
};
-
/* ---------------------------------------------------------------------- */
static u8 PAT[] = {
- 0xc2, // i2c register
- 0x00, // table number for encoder
-
- 0x47, // sync
- 0x40, 0x00, // transport_error_indicator(0), payload_unit_start(1), transport_priority(0), pid(0)
- 0x10, // transport_scrambling_control(00), adaptation_field_control(01), continuity_counter(0)
-
- 0x00, // PSI pointer to start of table
-
- 0x00, // tid(0)
- 0xb0, 0x0d, // section_syntax_indicator(1), section_length(13)
-
- 0x00, 0x01, // transport_stream_id(1)
-
- 0xc1, // version_number(0), current_next_indicator(1)
-
- 0x00, 0x00, // section_number(0), last_section_number(0)
-
- 0x00, 0x01, // program_number(1)
-
- 0xe0, 0x10, // PMT PID(0x10)
-
- 0x76, 0xf1, 0x44, 0xd1 // CRC32
+ 0xc2, /* i2c register */
+ 0x00, /* table number for encoder */
+
+ 0x47, /* sync */
+ 0x40, 0x00, /* transport_error_indicator(0), payload_unit_start(1), transport_priority(0), pid(0) */
+ 0x10, /* transport_scrambling_control(00), adaptation_field_control(01), continuity_counter(0) */
+
+ 0x00, /* PSI pointer to start of table */
+
+ 0x00, /* tid(0) */
+ 0xb0, 0x0d, /* section_syntax_indicator(1), section_length(13) */
+
+ 0x00, 0x01, /* transport_stream_id(1) */
+
+ 0xc1, /* version_number(0), current_next_indicator(1) */
+
+ 0x00, 0x00, /* section_number(0), last_section_number(0) */
+
+ 0x00, 0x01, /* program_number(1) */
+
+ 0xe0, 0x00, /* PMT PID */
+
+ 0x00, 0x00, 0x00, 0x00 /* CRC32 */
};
static u8 PMT[] = {
- 0xc2, // i2c register
- 0x01, // table number for encoder
-
- 0x47, // sync
- 0x40, 0x10, // transport_error_indicator(0), payload_unit_start(1), transport_priority(0), pid(0x10)
- 0x10, // transport_scrambling_control(00), adaptation_field_control(01), continuity_counter(0)
-
- 0x00, // PSI pointer to start of table
-
- 0x02, // tid(2)
- 0xb0, 0x17, // section_syntax_indicator(1), section_length(23)
-
- 0x00, 0x01, // program_number(1)
-
- 0xc1, // version_number(0), current_next_indicator(1)
-
- 0x00, 0x00, // section_number(0), last_section_number(0)
-
- 0xe1, 0x04, // PCR_PID (0x104)
-
- 0xf0, 0x00, // program_info_length(0)
-
- 0x02, 0xe1, 0x00, 0xf0, 0x00, // video stream type(2), pid(0x100)
- 0x04, 0xe1, 0x03, 0xf0, 0x00, // audio stream type(4), pid(0x103)
-
- 0xa1, 0xca, 0x0f, 0x82 // CRC32
+ 0xc2, /* i2c register */
+ 0x01, /* table number for encoder */
+
+ 0x47, /* sync */
+ 0x40, 0x00, /* transport_error_indicator(0), payload_unit_start(1), transport_priority(0), pid */
+ 0x10, /* transport_scrambling_control(00), adaptation_field_control(01), continuity_counter(0) */
+
+ 0x00, /* PSI pointer to start of table */
+
+ 0x02, /* tid(2) */
+ 0xb0, 0x17, /* section_syntax_indicator(1), section_length(23) */
+
+ 0x00, 0x01, /* program_number(1) */
+
+ 0xc1, /* version_number(0), current_next_indicator(1) */
+
+ 0x00, 0x00, /* section_number(0), last_section_number(0) */
+
+ 0xe0, 0x00, /* PCR_PID */
+
+ 0xf0, 0x00, /* program_info_length(0) */
+
+ 0x02, 0xe0, 0x00, 0xf0, 0x00, /* video stream type(2), pid */
+ 0x04, 0xe0, 0x00, 0xf0, 0x00, /* audio stream type(4), pid */
+
+ 0x00, 0x00, 0x00, 0x00 /* CRC32 */
};
-static struct mpeg_params mpeg_params_template =
+static struct saa6752hs_mpeg_params param_defaults =
{
- .bitrate_mode = MPEG_BITRATE_MODE_CBR,
- .video_target_bitrate = 5000,
- .audio_bitrate = MPEG_AUDIO_BITRATE_256,
- .total_bitrate = 6000,
+ .ts_pid_pmt = 16,
+ .ts_pid_video = 260,
+ .ts_pid_audio = 256,
+ .ts_pid_pcr = 259,
+
+ .vi_aspect = V4L2_MPEG_VIDEO_ASPECT_4x3,
+ .vi_bitrate = 4000,
+ .vi_bitrate_peak = 6000,
+ .vi_bitrate_mode = V4L2_MPEG_VIDEO_BITRATE_MODE_VBR,
+
+ .au_l2_bitrate = V4L2_MPEG_AUDIO_L2_BITRATE_256K,
};
-
-/* ---------------------------------------------------------------------- */
+static struct v4l2_mpeg_compression old_param_defaults =
+{
+ .st_type = V4L2_MPEG_TS_2,
+ .st_bitrate = {
+ .mode = V4L2_BITRATE_CBR,
+ .target = 7000,
+ },
+
+ .ts_pid_pmt = 16,
+ .ts_pid_video = 260,
+ .ts_pid_audio = 256,
+ .ts_pid_pcr = 259,
+
+ .vi_type = V4L2_MPEG_VI_2,
+ .vi_aspect_ratio = V4L2_MPEG_ASPECT_4_3,
+ .vi_bitrate = {
+ .mode = V4L2_BITRATE_VBR,
+ .target = 4000,
+ .max = 6000,
+ },
+
+ .au_type = V4L2_MPEG_AU_2_II,
+ .au_bitrate = {
+ .mode = V4L2_BITRATE_CBR,
+ .target = 256,
+ },
+
+};
+/* ---------------------------------------------------------------------- */
static int saa6752hs_chip_command(struct i2c_client* client,
enum saa6752hs_command command)
unsigned long timeout;
int status = 0;
- // execute the command
+ /* execute the command */
switch(command) {
- case SAA6752HS_COMMAND_RESET:
- buf[0] = 0x00;
+ case SAA6752HS_COMMAND_RESET:
+ buf[0] = 0x00;
break;
-
+
case SAA6752HS_COMMAND_STOP:
- buf[0] = 0x03;
+ buf[0] = 0x03;
break;
-
+
case SAA6752HS_COMMAND_START:
- buf[0] = 0x02;
+ buf[0] = 0x02;
break;
case SAA6752HS_COMMAND_PAUSE:
- buf[0] = 0x04;
+ buf[0] = 0x04;
break;
-
+
case SAA6752HS_COMMAND_RECONFIGURE:
buf[0] = 0x05;
break;
-
- case SAA6752HS_COMMAND_SLEEP:
- buf[0] = 0x06;
+
+ case SAA6752HS_COMMAND_SLEEP:
+ buf[0] = 0x06;
break;
- case SAA6752HS_COMMAND_RECONFIGURE_FORCE:
+ case SAA6752HS_COMMAND_RECONFIGURE_FORCE:
buf[0] = 0x07;
break;
-
+
default:
- return -EINVAL;
+ return -EINVAL;
}
-
- // set it and wait for it to be so
+
+ /* set it and wait for it to be so */
i2c_master_send(client, buf, 1);
timeout = jiffies + HZ * 3;
for (;;) {
- // get the current status
+ /* get the current status */
buf[0] = 0x10;
- i2c_master_send(client, buf, 1);
+ i2c_master_send(client, buf, 1);
i2c_master_recv(client, buf, 1);
if (!(buf[0] & 0x20))
status = -ETIMEDOUT;
break;
}
-
- // wait a bit
- set_current_state(TASK_INTERRUPTIBLE);
- schedule_timeout(HZ/100);
+
+ msleep(10);
}
- // delay a bit to let encoder settle
- set_current_state(TASK_INTERRUPTIBLE);
- schedule_timeout(HZ/20);
-
- // done
- return status;
+ /* delay a bit to let encoder settle */
+ msleep(50);
+
+ return status;
}
static int saa6752hs_set_bitrate(struct i2c_client* client,
- struct mpeg_params* params)
+ struct saa6752hs_mpeg_params* params)
{
- u8 buf[3];
-
- // set the bitrate mode
+ u8 buf[3];
+ int tot_bitrate;
+
+ /* set the bitrate mode */
buf[0] = 0x71;
- buf[1] = params->bitrate_mode;
+ buf[1] = (params->vi_bitrate_mode == V4L2_MPEG_VIDEO_BITRATE_MODE_VBR) ? 0 : 1;
i2c_master_send(client, buf, 2);
-
- // set the video bitrate
- if (params->bitrate_mode == MPEG_BITRATE_MODE_VBR) {
- // set the target bitrate
+
+ /* set the video bitrate */
+ if (params->vi_bitrate_mode == V4L2_MPEG_VIDEO_BITRATE_MODE_VBR) {
+ /* set the target bitrate */
buf[0] = 0x80;
- buf[1] = params->video_target_bitrate >> 8;
- buf[2] = params->video_target_bitrate & 0xff;
+ buf[1] = params->vi_bitrate >> 8;
+ buf[2] = params->vi_bitrate & 0xff;
i2c_master_send(client, buf, 3);
- // set the max bitrate
+ /* set the max bitrate */
buf[0] = 0x81;
- buf[1] = params->video_max_bitrate >> 8;
- buf[2] = params->video_max_bitrate & 0xff;
+ buf[1] = params->vi_bitrate_peak >> 8;
+ buf[2] = params->vi_bitrate_peak & 0xff;
i2c_master_send(client, buf, 3);
+ tot_bitrate = params->vi_bitrate_peak;
} else {
- // set the target bitrate (no max bitrate for CBR)
- buf[0] = 0x81;
- buf[1] = params->video_target_bitrate >> 8;
- buf[2] = params->video_target_bitrate & 0xff;
+ /* set the target bitrate (no max bitrate for CBR) */
+ buf[0] = 0x81;
+ buf[1] = params->vi_bitrate >> 8;
+ buf[2] = params->vi_bitrate & 0xff;
i2c_master_send(client, buf, 3);
+ tot_bitrate = params->vi_bitrate;
}
-
- // set the audio bitrate
- buf[0] = 0x94;
- buf[1] = params->audio_bitrate;
+
+ /* set the audio bitrate */
+ buf[0] = 0x94;
+ buf[1] = (V4L2_MPEG_AUDIO_L2_BITRATE_256K == params->au_l2_bitrate) ? 0 : 1;
i2c_master_send(client, buf, 2);
-
- // set the total bitrate
+ tot_bitrate += (V4L2_MPEG_AUDIO_L2_BITRATE_256K == params->au_l2_bitrate) ? 256 : 384;
+
+ /* Note: the total max bitrate is determined by adding the video and audio
+ bitrates together and also adding an extra 768kbit/s to stay on the
+ safe side. If more control should be required, then an extra MPEG control
+ should be added. */
+ tot_bitrate += 768;
+ if (tot_bitrate > MPEG_TOTAL_TARGET_BITRATE_MAX)
+ tot_bitrate = MPEG_TOTAL_TARGET_BITRATE_MAX;
+
+ /* set the total bitrate */
buf[0] = 0xb1;
- buf[1] = params->total_bitrate >> 8;
- buf[2] = params->total_bitrate & 0xff;
+ buf[1] = tot_bitrate >> 8;
+ buf[2] = tot_bitrate & 0xff;
i2c_master_send(client, buf, 3);
-
+
return 0;
}
+static void saa6752hs_set_subsampling(struct i2c_client* client,
+ struct v4l2_format* f)
+{
+ struct saa6752hs_state *h = i2c_get_clientdata(client);
+ int dist_352, dist_480, dist_720;
+
+ /*
+ FIXME: translate and round width/height into EMPRESS
+ subsample type:
+
+ type | PAL | NTSC
+ ---------------------------
+ SIF | 352x288 | 352x240
+ 1/2 D1 | 352x576 | 352x480
+ 2/3 D1 | 480x576 | 480x480
+ D1 | 720x576 | 720x480
+ */
+
+ dist_352 = abs(f->fmt.pix.width - 352);
+ dist_480 = abs(f->fmt.pix.width - 480);
+ dist_720 = abs(f->fmt.pix.width - 720);
+ if (dist_720 < dist_480) {
+ f->fmt.pix.width = 720;
+ f->fmt.pix.height = 576;
+ h->video_format = SAA6752HS_VF_D1;
+ }
+ else if (dist_480 < dist_352) {
+ f->fmt.pix.width = 480;
+ f->fmt.pix.height = 576;
+ h->video_format = SAA6752HS_VF_2_3_D1;
+ }
+ else {
+ f->fmt.pix.width = 352;
+ if (abs(f->fmt.pix.height - 576) <
+ abs(f->fmt.pix.height - 288)) {
+ f->fmt.pix.height = 576;
+ h->video_format = SAA6752HS_VF_1_2_D1;
+ }
+ else {
+ f->fmt.pix.height = 288;
+ h->video_format = SAA6752HS_VF_SIF;
+ }
+ }
+}
+
-static int saa6752hs_init(struct i2c_client* client, struct mpeg_params* params)
-{
- unsigned char buf[3];
- void *data;
+static void saa6752hs_old_set_params(struct i2c_client* client,
+ struct v4l2_mpeg_compression* params)
+{
+ struct saa6752hs_state *h = i2c_get_clientdata(client);
- // check the bitrate parameters first
- if (params != NULL) {
- if (params->bitrate_mode >= MPEG_BITRATE_MODE_MAX)
- return -EINVAL;
- if (params->video_target_bitrate >= MPEG_VIDEO_TARGET_BITRATE_MAX)
- return -EINVAL;
- if (params->video_max_bitrate >= MPEG_VIDEO_MAX_BITRATE_MAX)
- return -EINVAL;
- if (params->audio_bitrate >= MPEG_AUDIO_BITRATE_MAX)
+ /* check PIDs */
+ if (params->ts_pid_pmt <= MPEG_PID_MAX) {
+ h->old_params.ts_pid_pmt = params->ts_pid_pmt;
+ h->params.ts_pid_pmt = params->ts_pid_pmt;
+ }
+ if (params->ts_pid_pcr <= MPEG_PID_MAX) {
+ h->old_params.ts_pid_pcr = params->ts_pid_pcr;
+ h->params.ts_pid_pcr = params->ts_pid_pcr;
+ }
+ if (params->ts_pid_video <= MPEG_PID_MAX) {
+ h->old_params.ts_pid_video = params->ts_pid_video;
+ h->params.ts_pid_video = params->ts_pid_video;
+ }
+ if (params->ts_pid_audio <= MPEG_PID_MAX) {
+ h->old_params.ts_pid_audio = params->ts_pid_audio;
+ h->params.ts_pid_audio = params->ts_pid_audio;
+ }
+
+ /* check bitrate parameters */
+ if ((params->vi_bitrate.mode == V4L2_BITRATE_CBR) ||
+ (params->vi_bitrate.mode == V4L2_BITRATE_VBR)) {
+ h->old_params.vi_bitrate.mode = params->vi_bitrate.mode;
+ h->params.vi_bitrate_mode = (params->vi_bitrate.mode == V4L2_BITRATE_VBR) ?
+ V4L2_MPEG_VIDEO_BITRATE_MODE_VBR : V4L2_MPEG_VIDEO_BITRATE_MODE_CBR;
+ }
+ if (params->vi_bitrate.mode != V4L2_BITRATE_NONE)
+ h->old_params.st_bitrate.target = params->st_bitrate.target;
+ if (params->vi_bitrate.mode != V4L2_BITRATE_NONE)
+ h->old_params.vi_bitrate.target = params->vi_bitrate.target;
+ if (params->vi_bitrate.mode == V4L2_BITRATE_VBR)
+ h->old_params.vi_bitrate.max = params->vi_bitrate.max;
+ if (params->au_bitrate.mode != V4L2_BITRATE_NONE)
+ h->old_params.au_bitrate.target = params->au_bitrate.target;
+
+ /* aspect ratio */
+ if (params->vi_aspect_ratio == V4L2_MPEG_ASPECT_4_3 ||
+ params->vi_aspect_ratio == V4L2_MPEG_ASPECT_16_9) {
+ h->old_params.vi_aspect_ratio = params->vi_aspect_ratio;
+ if (params->vi_aspect_ratio == V4L2_MPEG_ASPECT_4_3)
+ h->params.vi_aspect = V4L2_MPEG_VIDEO_ASPECT_4x3;
+ else
+ h->params.vi_aspect = V4L2_MPEG_VIDEO_ASPECT_16x9;
+ }
+
+ /* range checks */
+ if (h->old_params.st_bitrate.target > MPEG_TOTAL_TARGET_BITRATE_MAX)
+ h->old_params.st_bitrate.target = MPEG_TOTAL_TARGET_BITRATE_MAX;
+ if (h->old_params.vi_bitrate.target > MPEG_VIDEO_TARGET_BITRATE_MAX)
+ h->old_params.vi_bitrate.target = MPEG_VIDEO_TARGET_BITRATE_MAX;
+ if (h->old_params.vi_bitrate.max > MPEG_VIDEO_MAX_BITRATE_MAX)
+ h->old_params.vi_bitrate.max = MPEG_VIDEO_MAX_BITRATE_MAX;
+ h->params.vi_bitrate = params->vi_bitrate.target;
+ h->params.vi_bitrate_peak = params->vi_bitrate.max;
+ if (h->old_params.au_bitrate.target <= 256) {
+ h->old_params.au_bitrate.target = 256;
+ h->params.au_l2_bitrate = V4L2_MPEG_AUDIO_L2_BITRATE_256K;
+ }
+ else {
+ h->old_params.au_bitrate.target = 384;
+ h->params.au_l2_bitrate = V4L2_MPEG_AUDIO_L2_BITRATE_384K;
+ }
+}
+
+static int handle_ctrl(struct saa6752hs_mpeg_params *params,
+ struct v4l2_ext_control *ctrl, unsigned int cmd)
+{
+ int old = 0, new;
+ int set = (cmd == VIDIOC_S_EXT_CTRLS);
+
+ new = ctrl->value;
+ switch (ctrl->id) {
+ case V4L2_CID_MPEG_STREAM_TYPE:
+ old = V4L2_MPEG_STREAM_TYPE_MPEG2_TS;
+ if (set && new != old)
+ return -ERANGE;
+ new = old;
+ break;
+ case V4L2_CID_MPEG_STREAM_PID_PMT:
+ old = params->ts_pid_pmt;
+ if (set && new > MPEG_PID_MAX)
+ return -ERANGE;
+ if (new > MPEG_PID_MAX)
+ new = MPEG_PID_MAX;
+ params->ts_pid_pmt = new;
+ break;
+ case V4L2_CID_MPEG_STREAM_PID_AUDIO:
+ old = params->ts_pid_audio;
+ if (set && new > MPEG_PID_MAX)
+ return -ERANGE;
+ if (new > MPEG_PID_MAX)
+ new = MPEG_PID_MAX;
+ params->ts_pid_audio = new;
+ break;
+ case V4L2_CID_MPEG_STREAM_PID_VIDEO:
+ old = params->ts_pid_video;
+ if (set && new > MPEG_PID_MAX)
+ return -ERANGE;
+ if (new > MPEG_PID_MAX)
+ new = MPEG_PID_MAX;
+ params->ts_pid_video = new;
+ break;
+ case V4L2_CID_MPEG_STREAM_PID_PCR:
+ old = params->ts_pid_pcr;
+ if (set && new > MPEG_PID_MAX)
+ return -ERANGE;
+ if (new > MPEG_PID_MAX)
+ new = MPEG_PID_MAX;
+ params->ts_pid_pcr = new;
+ break;
+ case V4L2_CID_MPEG_AUDIO_ENCODING:
+ old = V4L2_MPEG_AUDIO_ENCODING_LAYER_2;
+ if (set && new != old)
+ return -ERANGE;
+ new = old;
+ break;
+ case V4L2_CID_MPEG_AUDIO_L2_BITRATE:
+ old = params->au_l2_bitrate;
+ if (set && new != V4L2_MPEG_AUDIO_L2_BITRATE_256K &&
+ new != V4L2_MPEG_AUDIO_L2_BITRATE_384K)
+ return -ERANGE;
+ if (new <= V4L2_MPEG_AUDIO_L2_BITRATE_256K)
+ new = V4L2_MPEG_AUDIO_L2_BITRATE_256K;
+ else
+ new = V4L2_MPEG_AUDIO_L2_BITRATE_384K;
+ params->au_l2_bitrate = new;
+ break;
+ case V4L2_CID_MPEG_AUDIO_SAMPLING_FREQ:
+ old = V4L2_MPEG_AUDIO_SAMPLING_FREQ_48000;
+ if (set && new != old)
+ return -ERANGE;
+ new = old;
+ break;
+ case V4L2_CID_MPEG_VIDEO_ENCODING:
+ old = V4L2_MPEG_VIDEO_ENCODING_MPEG_2;
+ if (set && new != old)
+ return -ERANGE;
+ new = old;
+ break;
+ case V4L2_CID_MPEG_VIDEO_ASPECT:
+ old = params->vi_aspect;
+ if (set && new != V4L2_MPEG_VIDEO_ASPECT_16x9 &&
+ new != V4L2_MPEG_VIDEO_ASPECT_4x3)
+ return -ERANGE;
+ if (new != V4L2_MPEG_VIDEO_ASPECT_16x9)
+ new = V4L2_MPEG_VIDEO_ASPECT_4x3;
+ params->vi_aspect = new;
+ break;
+ case V4L2_CID_MPEG_VIDEO_BITRATE:
+ old = params->vi_bitrate * 1000;
+ new = 1000 * (new / 1000);
+ if (set && new > MPEG_VIDEO_TARGET_BITRATE_MAX * 1000)
+ return -ERANGE;
+ if (new > MPEG_VIDEO_TARGET_BITRATE_MAX * 1000)
+ new = MPEG_VIDEO_TARGET_BITRATE_MAX * 1000;
+ params->vi_bitrate = new / 1000;
+ break;
+ case V4L2_CID_MPEG_VIDEO_BITRATE_PEAK:
+ old = params->vi_bitrate_peak * 1000;
+ new = 1000 * (new / 1000);
+ if (set && new > MPEG_VIDEO_TARGET_BITRATE_MAX * 1000)
+ return -ERANGE;
+ if (new > MPEG_VIDEO_TARGET_BITRATE_MAX * 1000)
+ new = MPEG_VIDEO_TARGET_BITRATE_MAX * 1000;
+ params->vi_bitrate_peak = new / 1000;
+ break;
+ case V4L2_CID_MPEG_VIDEO_BITRATE_MODE:
+ old = params->vi_bitrate_mode;
+ params->vi_bitrate_mode = new;
+ break;
+ default:
return -EINVAL;
- if (params->total_bitrate >= MPEG_TOTAL_BITRATE_MAX)
- return -EINVAL;
- if (params->bitrate_mode == MPEG_BITRATE_MODE_MAX &&
- params->video_target_bitrate <= params->video_max_bitrate)
- return -EINVAL;
}
-
- // Set GOP structure {3, 13}
+ if (cmd == VIDIOC_G_EXT_CTRLS)
+ ctrl->value = old;
+ else
+ ctrl->value = new;
+ return 0;
+}
+
+static int saa6752hs_init(struct i2c_client* client)
+{
+ unsigned char buf[9], buf2[4];
+ struct saa6752hs_state *h;
+ u32 crc;
+ unsigned char localPAT[256];
+ unsigned char localPMT[256];
+
+ h = i2c_get_clientdata(client);
+
+ /* Set video format - must be done first as it resets other settings */
+ buf[0] = 0x41;
+ buf[1] = h->video_format;
+ i2c_master_send(client, buf, 2);
+
+ /* Set number of lines in input signal */
+ buf[0] = 0x40;
+ buf[1] = 0x00;
+ if (h->standard & V4L2_STD_525_60)
+ buf[1] = 0x01;
+ i2c_master_send(client, buf, 2);
+
+ /* set bitrate */
+ saa6752hs_set_bitrate(client, &h->params);
+
+ /* Set GOP structure {3, 13} */
buf[0] = 0x72;
buf[1] = 0x03;
buf[2] = 0x0D;
i2c_master_send(client,buf,3);
-
- // Set minimum Q-scale {4}
+
+ /* Set minimum Q-scale {4} */
buf[0] = 0x82;
buf[1] = 0x04;
i2c_master_send(client,buf,2);
-
- // Set maximum Q-scale {12}
+
+ /* Set maximum Q-scale {12} */
buf[0] = 0x83;
buf[1] = 0x0C;
i2c_master_send(client,buf,2);
-
- // Set Output Protocol
+
+ /* Set Output Protocol */
buf[0] = 0xD0;
- buf[1] = 0x01;
+ buf[1] = 0x81;
i2c_master_send(client,buf,2);
-
- // Set video output stream format {TS}
+
+ /* Set video output stream format {TS} */
buf[0] = 0xB0;
buf[1] = 0x05;
i2c_master_send(client,buf,2);
-
- // Set Audio PID {0x103}
+
+ /* compute PAT */
+ memcpy(localPAT, PAT, sizeof(PAT));
+ localPAT[17] = 0xe0 | ((h->params.ts_pid_pmt >> 8) & 0x0f);
+ localPAT[18] = h->params.ts_pid_pmt & 0xff;
+ crc = crc32_be(~0, &localPAT[7], sizeof(PAT) - 7 - 4);
+ localPAT[sizeof(PAT) - 4] = (crc >> 24) & 0xFF;
+ localPAT[sizeof(PAT) - 3] = (crc >> 16) & 0xFF;
+ localPAT[sizeof(PAT) - 2] = (crc >> 8) & 0xFF;
+ localPAT[sizeof(PAT) - 1] = crc & 0xFF;
+
+ /* compute PMT */
+ memcpy(localPMT, PMT, sizeof(PMT));
+ localPMT[3] = 0x40 | ((h->params.ts_pid_pmt >> 8) & 0x0f);
+ localPMT[4] = h->params.ts_pid_pmt & 0xff;
+ localPMT[15] = 0xE0 | ((h->params.ts_pid_pcr >> 8) & 0x0F);
+ localPMT[16] = h->params.ts_pid_pcr & 0xFF;
+ localPMT[20] = 0xE0 | ((h->params.ts_pid_video >> 8) & 0x0F);
+ localPMT[21] = h->params.ts_pid_video & 0xFF;
+ localPMT[25] = 0xE0 | ((h->params.ts_pid_audio >> 8) & 0x0F);
+ localPMT[26] = h->params.ts_pid_audio & 0xFF;
+ crc = crc32_be(~0, &localPMT[7], sizeof(PMT) - 7 - 4);
+ localPMT[sizeof(PMT) - 4] = (crc >> 24) & 0xFF;
+ localPMT[sizeof(PMT) - 3] = (crc >> 16) & 0xFF;
+ localPMT[sizeof(PMT) - 2] = (crc >> 8) & 0xFF;
+ localPMT[sizeof(PMT) - 1] = crc & 0xFF;
+
+ /* Set Audio PID */
buf[0] = 0xC1;
- buf[1] = 0x01;
- buf[2] = 0x03;
+ buf[1] = (h->params.ts_pid_audio >> 8) & 0xFF;
+ buf[2] = h->params.ts_pid_audio & 0xFF;
i2c_master_send(client,buf,3);
-
- // setup bitrate settings
- data = i2c_get_clientdata(client);
- if (params) {
- saa6752hs_set_bitrate(client, params);
- memcpy(data, params, sizeof(struct mpeg_params));
- } else {
- // parameters were not supplied. use the previous set
- saa6752hs_set_bitrate(client, (struct mpeg_params*) data);
- }
-
- // Send SI tables
- i2c_master_send(client,PAT,sizeof(PAT));
- i2c_master_send(client,PMT,sizeof(PMT));
-
- // mute then unmute audio. This removes buzzing artefacts
+
+ /* Set Video PID */
+ buf[0] = 0xC0;
+ buf[1] = (h->params.ts_pid_video >> 8) & 0xFF;
+ buf[2] = h->params.ts_pid_video & 0xFF;
+ i2c_master_send(client,buf,3);
+
+ /* Set PCR PID */
+ buf[0] = 0xC4;
+ buf[1] = (h->params.ts_pid_pcr >> 8) & 0xFF;
+ buf[2] = h->params.ts_pid_pcr & 0xFF;
+ i2c_master_send(client,buf,3);
+
+ /* Send SI tables */
+ i2c_master_send(client,localPAT,sizeof(PAT));
+ i2c_master_send(client,localPMT,sizeof(PMT));
+
+ /* mute then unmute audio. This removes buzzing artefacts */
buf[0] = 0xa4;
buf[1] = 1;
i2c_master_send(client, buf, 2);
- buf[1] = 0;
+ buf[1] = 0;
i2c_master_send(client, buf, 2);
-
- // start it going
+
+ /* start it going */
saa6752hs_chip_command(client, SAA6752HS_COMMAND_START);
+ /* readout current state */
+ buf[0] = 0xE1;
+ buf[1] = 0xA7;
+ buf[2] = 0xFE;
+ buf[3] = 0x82;
+ buf[4] = 0xB0;
+ i2c_master_send(client, buf, 5);
+ i2c_master_recv(client, buf2, 4);
+
+ /* change aspect ratio */
+ buf[0] = 0xE0;
+ buf[1] = 0xA7;
+ buf[2] = 0xFE;
+ buf[3] = 0x82;
+ buf[4] = 0xB0;
+ buf[5] = buf2[0];
+ switch(h->params.vi_aspect) {
+ case V4L2_MPEG_VIDEO_ASPECT_16x9:
+ buf[6] = buf2[1] | 0x40;
+ break;
+ case V4L2_MPEG_VIDEO_ASPECT_4x3:
+ default:
+ buf[6] = buf2[1] & 0xBF;
+ break;
+ break;
+ }
+ buf[7] = buf2[2];
+ buf[8] = buf2[3];
+ i2c_master_send(client, buf, 9);
+
return 0;
}
static int saa6752hs_attach(struct i2c_adapter *adap, int addr, int kind)
{
- struct i2c_client *client;
- struct mpeg_params* params;
+ struct saa6752hs_state *h;
- client_template.adapter = adap;
- client_template.addr = addr;
- printk("saa6752hs: chip found @ 0x%x\n", addr<<1);
-
- if (NULL == (client = kmalloc(sizeof(struct i2c_client), GFP_KERNEL)))
- return -ENOMEM;
- memcpy(client,&client_template,sizeof(struct i2c_client));
- strlcpy(client->name, "saa6752hs", sizeof(client->name));
-
- if (NULL == (params = kmalloc(sizeof(struct mpeg_params), GFP_KERNEL)))
+ if (NULL == (h = kzalloc(sizeof(*h), GFP_KERNEL)))
return -ENOMEM;
- memcpy(params,&mpeg_params_template,sizeof(struct mpeg_params));
- i2c_set_clientdata(client, params);
+ h->client = client_template;
+ h->params = param_defaults;
+ h->old_params = old_param_defaults;
+ h->client.adapter = adap;
+ h->client.addr = addr;
+
+ /* Assume 625 input lines */
+ h->standard = 0;
+
+ i2c_set_clientdata(&h->client, h);
+ i2c_attach_client(&h->client);
+
+ v4l_info(&h->client,"saa6752hs: chip found @ 0x%x\n", addr<<1);
- i2c_attach_client(client);
-
return 0;
}
static int saa6752hs_probe(struct i2c_adapter *adap)
{
- if (adap->class & I2C_ADAP_CLASS_TV_ANALOG)
+ if (adap->class & I2C_CLASS_TV_ANALOG)
return i2c_probe(adap, &addr_data, saa6752hs_attach);
-
return 0;
}
static int saa6752hs_detach(struct i2c_client *client)
{
- void *data;
+ struct saa6752hs_state *h;
- data = i2c_get_clientdata(client);
+ h = i2c_get_clientdata(client);
i2c_detach_client(client);
- kfree(data);
- kfree(client);
+ kfree(h);
return 0;
}
static int
saa6752hs_command(struct i2c_client *client, unsigned int cmd, void *arg)
{
- struct mpeg_params* init_arg = arg;
-
- switch (cmd) {
- case MPEG_SETPARAMS:
- return saa6752hs_init(client, init_arg);
+ struct saa6752hs_state *h = i2c_get_clientdata(client);
+ struct v4l2_ext_controls *ctrls = arg;
+ struct v4l2_mpeg_compression *old_params = arg;
+ struct saa6752hs_mpeg_params params;
+ int err = 0;
+ int i;
+
+ switch (cmd) {
+ case VIDIOC_S_MPEGCOMP:
+ if (NULL == old_params) {
+ /* apply settings and start encoder */
+ saa6752hs_init(client);
+ break;
+ }
+ saa6752hs_old_set_params(client, old_params);
+ /* fall through */
+ case VIDIOC_G_MPEGCOMP:
+ *old_params = h->old_params;
+ break;
+ case VIDIOC_S_EXT_CTRLS:
+ if (ctrls->ctrl_class != V4L2_CTRL_CLASS_MPEG)
+ return -EINVAL;
+ if (ctrls->count == 0) {
+ /* apply settings and start encoder */
+ saa6752hs_init(client);
+ break;
+ }
+ /* fall through */
+ case VIDIOC_TRY_EXT_CTRLS:
+ case VIDIOC_G_EXT_CTRLS:
+ if (ctrls->ctrl_class != V4L2_CTRL_CLASS_MPEG)
+ return -EINVAL;
+ params = h->params;
+ for (i = 0; i < ctrls->count; i++) {
+ if ((err = handle_ctrl(¶ms, ctrls->controls + i, cmd))) {
+ ctrls->error_idx = i;
+ return err;
+ }
+ }
+ h->params = params;
+ break;
+ case VIDIOC_G_FMT:
+ {
+ struct v4l2_format *f = arg;
+
+ if (h->video_format == SAA6752HS_VF_UNKNOWN)
+ h->video_format = SAA6752HS_VF_D1;
+ f->fmt.pix.width =
+ v4l2_format_table[h->video_format].fmt.pix.width;
+ f->fmt.pix.height =
+ v4l2_format_table[h->video_format].fmt.pix.height;
+ break ;
+ }
+ case VIDIOC_S_FMT:
+ {
+ struct v4l2_format *f = arg;
+ saa6752hs_set_subsampling(client, f);
+ break;
+ }
+ case VIDIOC_S_STD:
+ h->standard = *((v4l2_std_id *) arg);
+ break;
default:
/* nothing */
break;
}
-
- return 0;
+
+ return err;
}
/* ----------------------------------------------------------------------- */
static struct i2c_driver driver = {
- .owner = THIS_MODULE,
- .name = "i2c saa6752hs MPEG encoder",
- .id = I2C_DRIVERID_SAA6752HS,
- .flags = I2C_DF_NOTIFY,
- .attach_adapter = saa6752hs_probe,
- .detach_client = saa6752hs_detach,
- .command = saa6752hs_command,
+ .driver = {
+ .name = "saa6752hs",
+ },
+ .id = I2C_DRIVERID_SAA6752HS,
+ .attach_adapter = saa6752hs_probe,
+ .detach_client = saa6752hs_detach,
+ .command = saa6752hs_command,
};
static struct i2c_client client_template =
{
- I2C_DEVNAME("(saa6752hs unset)"),
- .flags = I2C_CLIENT_ALLOW_USE,
- .driver = &driver,
+ .name = "saa6752hs",
+ .driver = &driver,
};
-static int saa6752hs_init_module(void)
+static int __init saa6752hs_init_module(void)
{
- i2c_add_driver(&driver);
- return 0;
+ return i2c_add_driver(&driver);
}
-static void saa6752hs_cleanup_module(void)
+static void __exit saa6752hs_cleanup_module(void)
{
i2c_del_driver(&driver);
}
git://git.onelab.eu / linux-2.6.git / blobdiff