+++ /dev/null
-/* GStreamer
- * Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
- * 2000 Wim Taymans <wim.taymans@chello.be>
- *
- * gstosssink.c:
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Library General Public
- * License as published by the Free Software Foundation; either
- * version 2 of the License, or (at your option) any later version.
- *
- * This library 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
- * Library General Public License for more details.
- *
- * You should have received a copy of the GNU Library General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- * Boston, MA 02111-1307, USA.
- */
-
-
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <sys/ioctl.h>
-#include <fcntl.h>
-#include <sys/soundcard.h>
-#include <unistd.h>
-#include <errno.h>
-#include <string.h>
-
-#include <config.h>
-#include "gstosscommon.h"
-
-static gboolean
-gst_ossformat_get (gint law, gint endianness, gboolean sign, gint width, gint depth,
- gint *format, gint *bps)
-{
- if (width != depth)
- return FALSE;
-
- *bps = 1;
-
- if (law == 0) {
- if (width == 16) {
- if (sign == TRUE) {
- if (endianness == G_LITTLE_ENDIAN) {
- *format = AFMT_S16_LE;
- GST_DEBUG (
- "16 bit signed LE, no law (%d)", *format);
- }
- else if (endianness == G_BIG_ENDIAN) {
- *format = AFMT_S16_BE;
- GST_DEBUG (
- "16 bit signed BE, no law (%d)", *format);
- }
- }
- else {
- if (endianness == G_LITTLE_ENDIAN) {
- *format = AFMT_U16_LE;
- GST_DEBUG (
- "16 bit unsigned LE, no law (%d)", *format);
- }
- else if (endianness == G_BIG_ENDIAN) {
- *format = AFMT_U16_BE;
- GST_DEBUG (
- "16 bit unsigned BE, no law (%d)", *format);
- }
- }
- *bps = 2;
- }
- else if (width == 8) {
- if (sign == TRUE) {
- *format = AFMT_S8;
- GST_DEBUG (
- "8 bit signed, no law (%d)", *format);
- }
- else {
- *format = AFMT_U8;
- GST_DEBUG (
- "8 bit unsigned, no law (%d)", *format);
- }
- *bps = 1;
- }
- } else if (law == 1) {
- *format = AFMT_MU_LAW;
- GST_DEBUG (
- "mu law (%d)", *format);
- } else if (law == 2) {
- *format = AFMT_A_LAW;
- GST_DEBUG (
- "a law (%d)", *format);
- } else {
- g_critical ("unknown law");
- return FALSE;
- }
-
- return TRUE;
-}
-
-void
-gst_osscommon_init (GstOssCommon *common)
-{
- common->device = g_strdup ("/dev/dsp");
- common->fd = -1;
-
- gst_osscommon_reset (common);
-}
-
-void
-gst_osscommon_reset (GstOssCommon *common)
-{
- common->law = 0;
- common->endianness = G_BYTE_ORDER;
- common->sign = TRUE;
- common->width = 16;
- common->depth = 16;
- common->channels = 2;
- common->rate = 44100;
- common->fragment = 6;
- common->bps = 0;
-
-/* AFMT_*_BE not available on all OSS includes (e.g. FBSD) */
-#ifdef WORDS_BIGENDIAN
- common->format = AFMT_S16_BE;
-#else
- common->format = AFMT_S16_LE;
-#endif /* WORDS_BIGENDIAN */
-}
-
-gboolean
-gst_osscommon_parse_caps (GstOssCommon *common, GstCaps *caps)
-{
- gint bps, format;
-
- gst_caps_get_int (caps, "width", &common->width);
- gst_caps_get_int (caps, "depth", &common->depth);
-
- if (common->width != common->depth)
- return FALSE;
-
- gst_caps_get_int (caps, "law", &common->law);
- gst_caps_get_int (caps, "endianness", &common->endianness);
- gst_caps_get_boolean (caps, "signed", &common->sign);
-
- if (!gst_ossformat_get (common->law, common->endianness, common->sign,
- common->width, common->depth, &format, &bps))
- {
- GST_DEBUG ("could not get format");
- return FALSE;
- }
-
- gst_caps_get_int (caps, "channels", &common->channels);
- gst_caps_get_int (caps, "rate", &common->rate);
-
- common->bps = bps * common->channels * common->rate;
- common->format = format;
-
- return TRUE;
-}
-
-#define GET_FIXED_INT(caps, name, dest) \
-G_STMT_START { \
- if (gst_caps_has_fixed_property (caps, name)) \
- gst_caps_get_int (caps, name, dest); \
-} G_STMT_END
-#define GET_FIXED_BOOLEAN(caps, name, dest) \
-G_STMT_START { \
- if (gst_caps_has_fixed_property (caps, name)) \
- gst_caps_get_boolean (caps, name, dest); \
-} G_STMT_END
-
-gboolean
-gst_osscommon_merge_fixed_caps (GstOssCommon *common, GstCaps *caps)
-{
- gint bps, format;
-
- /* peel off fixed stuff from the caps */
- GET_FIXED_INT (caps, "law", &common->law);
- GET_FIXED_INT (caps, "endianness", &common->endianness);
- GET_FIXED_BOOLEAN (caps, "signed", &common->sign);
- GET_FIXED_INT (caps, "width", &common->width);
- GET_FIXED_INT (caps, "depth", &common->depth);
-
- if (!gst_ossformat_get (common->law, common->endianness, common->sign,
- common->width, common->depth, &format, &bps))
- {
- return FALSE;
- }
-
- GET_FIXED_INT (caps, "rate", &common->rate);
- GET_FIXED_INT (caps, "channels", &common->channels);
-
- common->bps = bps * common->channels * common->rate;
- common->format = format;
-
- return TRUE;
-}
-
-gboolean
-gst_osscommon_sync_parms (GstOssCommon *common)
-{
- audio_buf_info space;
- int frag;
- gint target_format;
- gint target_channels;
- gint target_rate;
- gint fragscale, frag_ln;
-
- if (common->fd == -1)
- return FALSE;
-
- if (common->fragment >> 16)
- frag = common->fragment;
- else
- frag = 0x7FFF0000 | common->fragment;
-
- GST_INFO (
- "common: setting sound card to %dHz %d format %s (%08x fragment)",
- common->rate, common->format,
- (common->channels == 2) ? "stereo" : "mono", frag);
-
- ioctl (common->fd, SNDCTL_DSP_SETFRAGMENT, &frag);
- ioctl (common->fd, SNDCTL_DSP_RESET, 0);
-
- target_format = common->format;
- target_channels = common->channels;
- target_rate = common->rate;
-
- ioctl (common->fd, SNDCTL_DSP_SETFMT, &common->format);
- ioctl (common->fd, SNDCTL_DSP_CHANNELS, &common->channels);
- ioctl (common->fd, SNDCTL_DSP_SPEED, &common->rate);
-
- ioctl (common->fd, SNDCTL_DSP_GETBLKSIZE, &common->fragment_size);
-
- if (common->mode == GST_OSSCOMMON_WRITE) {
- ioctl (common->fd, SNDCTL_DSP_GETOSPACE, &space);
- }
- else {
- ioctl (common->fd, SNDCTL_DSP_GETISPACE, &space);
- }
-
- /* calculate new fragment using a poor man's logarithm function */
- fragscale = 1;
- frag_ln = 0;
- while (fragscale < space.fragsize) {
- fragscale <<= 1;
- frag_ln++;
- }
- common->fragment = space.fragstotal << 16 | frag_ln;
-
- GST_INFO (
- "common: set sound card to %dHz, %d format, %s "
- "(%d bytes buffer, %08x fragment)",
- common->rate, common->format,
- (common->channels == 2) ? "stereo" : "mono",
- space.bytes, common->fragment);
-
- common->fragment_time = (GST_SECOND * common->fragment_size) / common->bps;
- GST_INFO ( "fragment time %u %" G_GUINT64_FORMAT "\n",
- common->bps, common->fragment_time);
-
- if (target_format != common->format ||
- target_channels != common->channels ||
- target_rate != common->rate)
- {
- g_warning ("couldn't set requested OSS parameters, enjoy the noise :)");
- /* we could eventually return FALSE here, or just do some additional tests
- * to see that the frequencies don't differ too much etc.. */
- }
- return TRUE;
-}
-
-gboolean
-gst_osscommon_open_audio (GstOssCommon *common, GstOssOpenMode mode, gchar **error)
-{
- gint caps;
- g_return_val_if_fail (common->fd == -1, FALSE);
-
- GST_INFO ( "common: attempting to open sound device");
-
- /* first try to open the sound card */
- if (mode == GST_OSSCOMMON_WRITE) {
- /* open non blocking first so that it returns immediatly with an error
- * when we cannot get to the device */
- common->fd = open (common->device, O_WRONLY | O_NONBLOCK);
-
- if (common->fd >= 0) {
- close (common->fd);
-
- /* re-open the sound device in blocking mode */
- common->fd = open (common->device, O_WRONLY);
- }
- }
- else {
- common->fd = open (common->device, O_RDONLY);
- }
-
- if (common->fd < 0) {
- switch (errno) {
- case EBUSY:
- *error = g_strdup_printf ("osscommon: Unable to open %s (in use ?)",
- common->device);
- break;
- case EISDIR:
- *error = g_strdup_printf ("osscommon: Device %s is a directory",
- common->device);
- break;
- case EACCES:
- case ETXTBSY:
- *error = g_strdup_printf ( "osscommon: Cannot access %s, check permissions",
- common->device);
- break;
- case ENXIO:
- case ENODEV:
- case ENOENT:
- *error = g_strdup_printf ("osscommon: Cannot access %s, does it exist ?",
- common->device);
- break;
- case EROFS:
- *error = g_strdup_printf ("osscommon: Cannot access %s, read-only filesystem ?",
- common->device);
- default:
- /* FIXME: strerror is not threadsafe */
- *error = g_strdup_printf ("osscommon: Cannot open %s, generic error: %s",
- common->device, strerror (errno));
- break;
- }
- return FALSE;
- }
-
- common->mode = mode;
-
- /* we have it, set the default parameters and go have fun */
- /* set card state */
- ioctl (common->fd, SNDCTL_DSP_GETCAPS, &caps);
-
- GST_INFO ( "osscommon: Capabilities %08x", caps);
-
- if (caps & DSP_CAP_DUPLEX) GST_INFO ( "osscommon: Full duplex");
- if (caps & DSP_CAP_REALTIME) GST_INFO ( "osscommon: Realtime");
- if (caps & DSP_CAP_BATCH) GST_INFO ( "osscommon: Batch");
- if (caps & DSP_CAP_COPROC) GST_INFO ( "osscommon: Has coprocessor");
- if (caps & DSP_CAP_TRIGGER) GST_INFO ( "osscommon: Trigger");
- if (caps & DSP_CAP_MMAP) GST_INFO ( "osscommon: Direct access");
-
-#ifdef DSP_CAP_MULTI
- if (caps & DSP_CAP_MULTI) GST_INFO ( "osscommon: Multiple open");
-#endif /* DSP_CAP_MULTI */
-
-#ifdef DSP_CAP_BIND
- if (caps & DSP_CAP_BIND) GST_INFO ( "osscommon: Channel binding");
-#endif /* DSP_CAP_BIND */
-
- ioctl(common->fd, SNDCTL_DSP_GETFMTS, &caps);
-
- GST_INFO ( "osscommon: Formats %08x", caps);
- if (caps & AFMT_MU_LAW) GST_INFO ( "osscommon: MU_LAW");
- if (caps & AFMT_A_LAW) GST_INFO ( "osscommon: A_LAW");
- if (caps & AFMT_IMA_ADPCM) GST_INFO ( "osscommon: IMA_ADPCM");
- if (caps & AFMT_U8) GST_INFO ( "osscommon: U8");
- if (caps & AFMT_S16_LE) GST_INFO ( "osscommon: S16_LE");
- if (caps & AFMT_S16_BE) GST_INFO ( "osscommon: S16_BE");
- if (caps & AFMT_S8) GST_INFO ( "osscommon: S8");
- if (caps & AFMT_U16_LE) GST_INFO ( "osscommon: U16_LE");
- if (caps & AFMT_U16_BE) GST_INFO ( "osscommon: U16_BE");
- if (caps & AFMT_MPEG) GST_INFO ( "osscommon: MPEG");
-#ifdef AFMT_AC3
- if (caps & AFMT_AC3) GST_INFO ( "osscommon: AC3");
-#endif
-
- GST_INFO (
- "osscommon: opened audio (%s) with fd=%d", common->device, common->fd);
-
- common->caps = caps;
-
- return TRUE;
-}
-
-void
-gst_osscommon_close_audio (GstOssCommon *common)
-{
- if (common->fd < 0)
- return;
-
- close(common->fd);
- common->fd = -1;
-}
-
-gboolean
-gst_osscommon_convert (GstOssCommon *common, GstFormat src_format, gint64 src_value,
- GstFormat *dest_format, gint64 *dest_value)
-{
- gboolean res = TRUE;
-
- if (src_format == *dest_format) {
- *dest_value = src_value;
- return TRUE;
- }
-
- if (common->bps == 0 || common->channels == 0 || common->width == 0)
- return FALSE;
-
- switch (src_format) {
- case GST_FORMAT_BYTES:
- switch (*dest_format) {
- case GST_FORMAT_TIME:
- *dest_value = src_value * GST_SECOND / common->bps;
- break;
- case GST_FORMAT_DEFAULT:
- *dest_value = src_value / (common->channels * common->width);
- break;
- default:
- res = FALSE;
- }
- break;
- case GST_FORMAT_TIME:
- switch (*dest_format) {
- case GST_FORMAT_BYTES:
- *dest_value = src_value * common->bps / GST_SECOND;
- break;
- case GST_FORMAT_DEFAULT:
- *dest_value = src_value * common->rate / GST_SECOND;
- break;
- default:
- res = FALSE;
- }
- break;
- case GST_FORMAT_DEFAULT:
- switch (*dest_format) {
- case GST_FORMAT_TIME:
- *dest_value = src_value * GST_SECOND / common->rate;
- break;
- case GST_FORMAT_BYTES:
- *dest_value = src_value * common->channels * common->width;
- break;
- default:
- res = FALSE;
- }
- break;
- default:
- res = FALSE;
- }
-
- return res;
-}
-
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