From 3eea543b7282bea38970f20840acff9e230d0c2a Mon Sep 17 00:00:00 2001 From: Hans Verkuil Date: Fri, 8 Aug 2008 13:27:16 -0300 Subject: [PATCH] V4L/DVB (8640): saa6752hs: add PMT table for AC3 The PMT table for AC3 audio is different. Thanks to Dmitry Belimov for providing the table data. Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- drivers/media/video/saa7134/saa6752hs.c | 63 ++++++++++++++++++++----- 1 file changed, 50 insertions(+), 13 deletions(-) diff --git a/drivers/media/video/saa7134/saa6752hs.c b/drivers/media/video/saa7134/saa6752hs.c index ca725a74ce6a..28499e591925 100644 --- a/drivers/media/video/saa7134/saa6752hs.c +++ b/drivers/media/video/saa7134/saa6752hs.c @@ -172,6 +172,39 @@ static u8 PMT[] = { 0x00, 0x00, 0x00, 0x00 /* CRC32 */ }; +static u8 PMT_AC3[] = { + 0xc2, /* i2c register */ + 0x01, /* table number for encoder(1) */ + 0x47, /* sync */ + + 0x40, /* transport_error_indicator(0), payload_unit_start(1), transport_priority(0) */ + 0x10, /* PMT PID (0x0010) */ + 0x10, /* transport_scrambling_control(00), adaptation_field_control(01), continuity_counter(0) */ + + 0x00, /* PSI pointer to start of table */ + + 0x02, /* TID (2) */ + 0xb0, 0x1a, /* section_syntax_indicator(1), section_length(26) */ + + 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 (0x0104) */ + + 0xf0, 0x00, /* program_info_length(0) */ + + 0x02, 0xe1, 0x00, 0xf0, 0x00, /* video stream type(2), pid */ + 0x06, 0xe1, 0x03, 0xf0, 0x03, /* audio stream type(6), pid */ + 0x6a, /* AC3 */ + 0x01, /* Descriptor_length(1) */ + 0x00, /* component_type_flag(0), bsid_flag(0), mainid_flag(0), asvc_flag(0), reserved flags(0) */ + + 0xED, 0xDE, 0x2D, 0xF3 /* CRC32 BE */ +}; + static struct saa6752hs_mpeg_params param_defaults = { .ts_pid_pmt = 16, @@ -186,7 +219,7 @@ static struct saa6752hs_mpeg_params param_defaults = .au_encoding = V4L2_MPEG_AUDIO_ENCODING_LAYER_2, .au_l2_bitrate = V4L2_MPEG_AUDIO_L2_BITRATE_256K, - .au_ac3_bitrate = V4L2_MPEG_AUDIO_AC3_BITRATE_384K, + .au_ac3_bitrate = V4L2_MPEG_AUDIO_AC3_BITRATE_256K, }; /* ---------------------------------------------------------------------- */ @@ -295,10 +328,7 @@ static int saa6752hs_set_bitrate(struct i2c_client* client, /* set the audio encoding */ buf[0] = 0x93; - if (params->au_encoding == V4L2_MPEG_AUDIO_ENCODING_AC3) - buf[1] = 1; - else - buf[1] = 0; + buf[1] = (params->au_encoding == V4L2_MPEG_AUDIO_ENCODING_AC3); i2c_master_send(client, buf, 2); /* set the audio bitrate */ @@ -627,6 +657,7 @@ static int saa6752hs_init(struct i2c_client* client) { unsigned char buf[9], buf2[4]; struct saa6752hs_state *h; + unsigned size; u32 crc; unsigned char localPAT[256]; unsigned char localPMT[256]; @@ -685,7 +716,13 @@ static int saa6752hs_init(struct i2c_client* client) localPAT[sizeof(PAT) - 1] = crc & 0xFF; /* compute PMT */ - memcpy(localPMT, PMT, sizeof(PMT)); + if (h->params.au_encoding == V4L2_MPEG_AUDIO_ENCODING_AC3) { + size = sizeof(PMT_AC3); + memcpy(localPMT, PMT_AC3, size); + } else { + size = sizeof(PMT); + memcpy(localPMT, PMT, size); + } 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); @@ -694,11 +731,11 @@ static int saa6752hs_init(struct i2c_client* client) 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; + crc = crc32_be(~0, &localPMT[7], size - 7 - 4); + localPMT[size - 4] = (crc >> 24) & 0xFF; + localPMT[size - 3] = (crc >> 16) & 0xFF; + localPMT[size - 2] = (crc >> 8) & 0xFF; + localPMT[size - 1] = crc & 0xFF; /* Set Audio PID */ buf[0] = 0xC1; @@ -719,8 +756,8 @@ static int saa6752hs_init(struct i2c_client* client) i2c_master_send(client,buf,3); /* Send SI tables */ - i2c_master_send(client,localPAT,sizeof(PAT)); - i2c_master_send(client,localPMT,sizeof(PMT)); + i2c_master_send(client, localPAT, sizeof(PAT)); + i2c_master_send(client, localPMT, size); /* mute then unmute audio. This removes buzzing artefacts */ buf[0] = 0xa4;