From mboxrd@z Thu Jan 1 00:00:00 1970 From: Nicolas Boullis Subject: writing an alsa driver for an MPEG decoder chip Date: Sun, 28 Aug 2005 16:46:42 +0200 Message-ID: <20050828144637.GA4452@home> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline Sender: alsa-devel-admin@lists.sourceforge.net Errors-To: alsa-devel-admin@lists.sourceforge.net List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , List-Archive: To: alsa-devel@lists.sourceforge.net List-Id: alsa-devel@alsa-project.org Hi, I am a member of the dxr3 project, that tries to write a linux driver for the MPEG decoder em8300 chip that is mainly used in Sigma Design's Hollywood+ and Creative Labs DXR3 boards. This chip handles hardware decoding of MPEG video, but is also able do perform some limited audio playback. We corrently have a working OSS interface for the audio playbak, that I'd like to replace with an ALSA one. I tried to write one, using Takashi Iwai's excellent "Writing an ALSA Driver" guide. Unfortunately, the driver that I managed to write seems to work fine when playing sound with xmms, but all other apps that I tried failed to get any sound. Anyone can help me figure out whet I missed? You can grab the relevant file at http://dxr3.sourceforge.net/download/em8300_alsa.c Thanks in advance, Nicolas Boullis PS: I am not subscribed to this list, please CC replies to me. ------------------------------------------------------- SF.Net email is Sponsored by the Better Software Conference & EXPO September 19-22, 2005 * San Francisco, CA * Development Lifecycle Practices Agile & Plan-Driven Development * Managing Projects & Teams * Testing & QA Security * Process Improvement & Measurement * http://www.sqe.com/bsce5sf