Manu Abraham wrote:
... Looking at an application POV, the application will need to // check whether the stream has a S2 descriptor if (s2 descriptor) { // this is backward compatible mode// in this mode, check whether the multiple input stream flag existsif (multiple_input_stream_flag) { // Now HP & LP stream s exists // Provide feedback to user that HP/LP streams exists provide_user_feedback(params);// get info from user whether he is interested in the HP or LP streamif (user_feedback == HP) { // tune to normal DVB-S } else if (user_feedback == LP) { // tune to DVB-S2// to tune to DVB-S2 , we need to send the stream_identifier// from the s2 satellite delivery system descriptor tune_dvbs2(params); } } }In this POV, to provide the user feedback, i think the a feedback control knob would be nice rather than using ISI in conjunction with delivery system. A knob to control it, such as STREAM_PRIO_HP/STREAM_PRIO_LP , But this is at an application POV, not the API. But to make applications consistent with this control, we may use this control in the API itself.
This "feedback" thing is not a good idea IMHO. What if a recording is to start? Usually there is no user around to ask at that time. Also, when a user zaps through the channels, he shouldn't have to make such decisions for every channel he tunes to. If there really needs to be a distinction, it should be a property of the individual channel. Meaning, if there are two different streams for one programme, make that two different channels. Well, maybe that's nothing the driver needs to be concerned with. Klaus _______________________________________________ linux-dvb@xxxxxxxxxxx http://www.linuxtv.org/cgi-bin/mailman/listinfo/linux-dvb
