[PATCH] v4l: 686: change the number of lines in the input signal when the
- Change the number of lines in the input signal when the video standard is changed. - Fix comments style. Signed-off-by: Robert W. Boone <rboone@rtd.com> Signed-off-by: Nickolay V. Shmyrev <nshmyrev@yandex.ru> Signed-off-by: Mauro Carvalho Chehab <mchehab@brturbo.com.br> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Robert W. Boone
Linus Torvalds
Родитель
20f441f690
Коммит
9b71521b66
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@ -57,6 +57,7 @@ struct saa6752hs_state {
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struct i2c_client client;
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struct v4l2_mpeg_compression params;
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enum saa6752hs_videoformat video_format;
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v4l2_std_id standard;
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};
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enum saa6752hs_command {
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@ -74,58 +75,58 @@ enum saa6752hs_command {
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/* ---------------------------------------------------------------------- */
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static u8 PAT[] = {
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0xc2, // i2c register
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0x00, // table number for encoder
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0xc2, /* i2c register */
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0x00, /* table number for encoder */
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0x47, // sync
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0x40, 0x00, // transport_error_indicator(0), payload_unit_start(1), transport_priority(0), pid(0)
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0x10, // transport_scrambling_control(00), adaptation_field_control(01), continuity_counter(0)
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0x47, /* sync */
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0x40, 0x00, /* transport_error_indicator(0), payload_unit_start(1), transport_priority(0), pid(0) */
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0x10, /* transport_scrambling_control(00), adaptation_field_control(01), continuity_counter(0) */
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0x00, // PSI pointer to start of table
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0x00, /* PSI pointer to start of table */
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0x00, // tid(0)
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0xb0, 0x0d, // section_syntax_indicator(1), section_length(13)
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0x00, /* tid(0) */
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0xb0, 0x0d, /* section_syntax_indicator(1), section_length(13) */
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0x00, 0x01, // transport_stream_id(1)
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0x00, 0x01, /* transport_stream_id(1) */
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0xc1, // version_number(0), current_next_indicator(1)
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0xc1, /* version_number(0), current_next_indicator(1) */
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0x00, 0x00, // section_number(0), last_section_number(0)
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0x00, 0x00, /* section_number(0), last_section_number(0) */
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0x00, 0x01, // program_number(1)
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0x00, 0x01, /* program_number(1) */
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0xe0, 0x00, // PMT PID
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0xe0, 0x00, /* PMT PID */
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0x00, 0x00, 0x00, 0x00 // CRC32
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0x00, 0x00, 0x00, 0x00 /* CRC32 */
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};
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static u8 PMT[] = {
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0xc2, // i2c register
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0x01, // table number for encoder
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0xc2, /* i2c register */
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0x01, /* table number for encoder */
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0x47, // sync
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0x40, 0x00, // transport_error_indicator(0), payload_unit_start(1), transport_priority(0), pid
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0x10, // transport_scrambling_control(00), adaptation_field_control(01), continuity_counter(0)
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0x47, /* sync */
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0x40, 0x00, /* transport_error_indicator(0), payload_unit_start(1), transport_priority(0), pid */
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0x10, /* transport_scrambling_control(00), adaptation_field_control(01), continuity_counter(0) */
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0x00, // PSI pointer to start of table
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0x00, /* PSI pointer to start of table */
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0x02, // tid(2)
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0xb0, 0x17, // section_syntax_indicator(1), section_length(23)
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0x02, /* tid(2) */
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0xb0, 0x17, /* section_syntax_indicator(1), section_length(23) */
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0x00, 0x01, // program_number(1)
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0x00, 0x01, /* program_number(1) */
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0xc1, // version_number(0), current_next_indicator(1)
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0xc1, /* version_number(0), current_next_indicator(1) */
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0x00, 0x00, // section_number(0), last_section_number(0)
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0x00, 0x00, /* section_number(0), last_section_number(0) */
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0xe0, 0x00, // PCR_PID
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0xe0, 0x00, /* PCR_PID */
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0xf0, 0x00, // program_info_length(0)
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0xf0, 0x00, /* program_info_length(0) */
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0x02, 0xe0, 0x00, 0xf0, 0x00, // video stream type(2), pid
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0x04, 0xe0, 0x00, 0xf0, 0x00, // audio stream type(4), pid
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0x02, 0xe0, 0x00, 0xf0, 0x00, /* video stream type(2), pid */
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0x04, 0xe0, 0x00, 0xf0, 0x00, /* audio stream type(4), pid */
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0x00, 0x00, 0x00, 0x00 // CRC32
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0x00, 0x00, 0x00, 0x00 /* CRC32 */
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};
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static struct v4l2_mpeg_compression param_defaults =
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@ -166,7 +167,7 @@ static int saa6752hs_chip_command(struct i2c_client* client,
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unsigned long timeout;
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int status = 0;
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// execute the command
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/* execute the command */
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switch(command) {
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case SAA6752HS_COMMAND_RESET:
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buf[0] = 0x00;
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@ -200,11 +201,11 @@ static int saa6752hs_chip_command(struct i2c_client* client,
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return -EINVAL;
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}
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// set it and wait for it to be so
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/* set it and wait for it to be so */
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i2c_master_send(client, buf, 1);
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timeout = jiffies + HZ * 3;
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for (;;) {
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// get the current status
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/* get the current status */
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buf[0] = 0x10;
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i2c_master_send(client, buf, 1);
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i2c_master_recv(client, buf, 1);
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@ -216,14 +217,12 @@ static int saa6752hs_chip_command(struct i2c_client* client,
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break;
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}
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// wait a bit
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msleep(10);
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}
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// delay a bit to let encoder settle
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/* delay a bit to let encoder settle */
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msleep(50);
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// done
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return status;
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}
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@ -233,44 +232,43 @@ static int saa6752hs_set_bitrate(struct i2c_client* client,
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{
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u8 buf[3];
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// set the bitrate mode
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/* set the bitrate mode */
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buf[0] = 0x71;
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buf[1] = (params->vi_bitrate.mode == V4L2_BITRATE_VBR) ? 0 : 1;
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i2c_master_send(client, buf, 2);
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// set the video bitrate
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/* set the video bitrate */
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if (params->vi_bitrate.mode == V4L2_BITRATE_VBR) {
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// set the target bitrate
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/* set the target bitrate */
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buf[0] = 0x80;
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buf[1] = params->vi_bitrate.target >> 8;
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buf[2] = params->vi_bitrate.target & 0xff;
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i2c_master_send(client, buf, 3);
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// set the max bitrate
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/* set the max bitrate */
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buf[0] = 0x81;
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buf[1] = params->vi_bitrate.max >> 8;
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buf[2] = params->vi_bitrate.max & 0xff;
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i2c_master_send(client, buf, 3);
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} else {
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// set the target bitrate (no max bitrate for CBR)
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/* set the target bitrate (no max bitrate for CBR) */
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buf[0] = 0x81;
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buf[1] = params->vi_bitrate.target >> 8;
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buf[2] = params->vi_bitrate.target & 0xff;
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i2c_master_send(client, buf, 3);
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}
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// set the audio bitrate
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/* set the audio bitrate */
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buf[0] = 0x94;
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buf[1] = (256 == params->au_bitrate.target) ? 0 : 1;
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i2c_master_send(client, buf, 2);
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// set the total bitrate
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/* set the total bitrate */
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buf[0] = 0xb1;
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buf[1] = params->st_bitrate.target >> 8;
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buf[2] = params->st_bitrate.target & 0xff;
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i2c_master_send(client, buf, 3);
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// return success
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return 0;
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}
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@ -376,36 +374,43 @@ static int saa6752hs_init(struct i2c_client* client)
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h = i2c_get_clientdata(client);
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// Set video format - must be done first as it resets other settings
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/* Set video format - must be done first as it resets other settings */
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buf[0] = 0x41;
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buf[1] = h->video_format;
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i2c_master_send(client, buf, 2);
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// set bitrate
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/* Set number of lines in input signal */
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buf[0] = 0x40;
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buf[1] = 0x00;
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if (h->standard & V4L2_STD_525_60)
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buf[1] = 0x01;
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i2c_master_send(client, buf, 2);
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/* set bitrate */
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saa6752hs_set_bitrate(client, &h->params);
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// Set GOP structure {3, 13}
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/* Set GOP structure {3, 13} */
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buf[0] = 0x72;
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buf[1] = 0x03;
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buf[2] = 0x0D;
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i2c_master_send(client,buf,3);
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// Set minimum Q-scale {4}
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/* Set minimum Q-scale {4} */
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buf[0] = 0x82;
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buf[1] = 0x04;
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i2c_master_send(client,buf,2);
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// Set maximum Q-scale {12}
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/* Set maximum Q-scale {12} */
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buf[0] = 0x83;
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buf[1] = 0x0C;
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i2c_master_send(client,buf,2);
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// Set Output Protocol
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/* Set Output Protocol */
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buf[0] = 0xD0;
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buf[1] = 0x81;
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i2c_master_send(client,buf,2);
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// Set video output stream format {TS}
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/* Set video output stream format {TS} */
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buf[0] = 0xB0;
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buf[1] = 0x05;
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i2c_master_send(client,buf,2);
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@ -436,39 +441,39 @@ static int saa6752hs_init(struct i2c_client* client)
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localPMT[sizeof(PMT) - 2] = (crc >> 8) & 0xFF;
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localPMT[sizeof(PMT) - 1] = crc & 0xFF;
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// Set Audio PID
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/* Set Audio PID */
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buf[0] = 0xC1;
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buf[1] = (h->params.ts_pid_audio >> 8) & 0xFF;
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buf[2] = h->params.ts_pid_audio & 0xFF;
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i2c_master_send(client,buf,3);
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// Set Video PID
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/* Set Video PID */
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buf[0] = 0xC0;
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buf[1] = (h->params.ts_pid_video >> 8) & 0xFF;
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buf[2] = h->params.ts_pid_video & 0xFF;
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i2c_master_send(client,buf,3);
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// Set PCR PID
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/* Set PCR PID */
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buf[0] = 0xC4;
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buf[1] = (h->params.ts_pid_pcr >> 8) & 0xFF;
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buf[2] = h->params.ts_pid_pcr & 0xFF;
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i2c_master_send(client,buf,3);
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// Send SI tables
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/* Send SI tables */
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i2c_master_send(client,localPAT,sizeof(PAT));
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i2c_master_send(client,localPMT,sizeof(PMT));
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// mute then unmute audio. This removes buzzing artefacts
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/* mute then unmute audio. This removes buzzing artefacts */
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buf[0] = 0xa4;
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buf[1] = 1;
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i2c_master_send(client, buf, 2);
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buf[1] = 0;
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i2c_master_send(client, buf, 2);
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// start it going
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/* start it going */
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saa6752hs_chip_command(client, SAA6752HS_COMMAND_START);
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// readout current state
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/* readout current state */
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buf[0] = 0xE1;
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buf[1] = 0xA7;
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buf[2] = 0xFE;
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@ -477,7 +482,7 @@ static int saa6752hs_init(struct i2c_client* client)
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i2c_master_send(client, buf, 5);
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i2c_master_recv(client, buf2, 4);
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// change aspect ratio
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/* change aspect ratio */
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buf[0] = 0xE0;
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buf[1] = 0xA7;
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buf[2] = 0xFE;
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@ -498,7 +503,6 @@ static int saa6752hs_init(struct i2c_client* client)
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buf[8] = buf2[3];
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i2c_master_send(client, buf, 9);
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// return success
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return 0;
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}
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@ -516,6 +520,9 @@ static int saa6752hs_attach(struct i2c_adapter *adap, int addr, int kind)
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h->client.adapter = adap;
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h->client.addr = addr;
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/* Assume 625 input lines */
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h->standard = 0;
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i2c_set_clientdata(&h->client, h);
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i2c_attach_client(&h->client);
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return 0;
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@ -576,6 +583,9 @@ saa6752hs_command(struct i2c_client *client, unsigned int cmd, void *arg)
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saa6752hs_set_subsampling(client, f);
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break;
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}
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case VIDIOC_S_STD:
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h->standard = *((v4l2_std_id *) arg);
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break;
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default:
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/* nothing */
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break;
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