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authorAndy Walls <awalls@md.metrocast.net>2012-09-03 02:13:14 +0400
committerMauro Carvalho Chehab <mchehab@redhat.com>2012-09-18 20:26:50 +0400
commit269c11fbac4f7b4ed58e77f3049b64b55a342234 (patch)
tree53e01d0a8f9cd1cd488f2d3e2838a79edf1ccfe6 /drivers/media/pci/ivtv/ivtv-alsa-pcm.h
parent6d60805fd2e8103fafa02fcf6448446229ebd511 (diff)
downloadlinux-269c11fbac4f7b4ed58e77f3049b64b55a342234.tar.xz
[media] ivtv, ivtv-alsa: Add initial ivtv-alsa interface driver for ivtv
This is a cut-and-paste port of the cx18-alsa driver to create an ivtv-alsa interface module for the ivtv driver. It is not actually hooked-up to the PCM stream DMA buffers from the ivtv driver yet. That will be done in a coming change, since that portion is so very different from the cx18 driver. This code has all or more of the bugs and shortcomings of the cx18-alsa interface driver: inconsistent use of itvsc->slock, ivtv-alsa-mixer.c is dead code, assumes 48 ksps regardless of the actual setting of the audio capture, problems with proper struct ivtv and struct ivtv_stream housekeeping, struct ivtv_open_id.v4l2_fh abuse, and $DIETY knows what else. Signed-off-by: Andy Walls <awalls@md.metrocast.net> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/pci/ivtv/ivtv-alsa-pcm.h')
-rw-r--r--drivers/media/pci/ivtv/ivtv-alsa-pcm.h27
1 files changed, 27 insertions, 0 deletions
diff --git a/drivers/media/pci/ivtv/ivtv-alsa-pcm.h b/drivers/media/pci/ivtv/ivtv-alsa-pcm.h
new file mode 100644
index 000000000000..5ab18319ea4d
--- /dev/null
+++ b/drivers/media/pci/ivtv/ivtv-alsa-pcm.h
@@ -0,0 +1,27 @@
+/*
+ * ALSA PCM device for the
+ * ALSA interface to ivtv PCM capture streams
+ *
+ * Copyright (C) 2009,2012 Andy Walls <awalls@md.metrocast.net>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ * 02111-1307 USA
+ */
+
+int __init snd_ivtv_pcm_create(struct snd_ivtv_card *itvsc);
+
+/* Used by ivtv driver to announce the PCM data to the module */
+void ivtv_alsa_announce_pcm_data(struct snd_ivtv_card *card, u8 *pcm_data,
+ size_t num_bytes);