sndio support for playback and record

Signed-off-by: Anton Khirnov <anton@khirnov.net>

7 files changed, 375 insertions, 2 deletions

diff --git a/libavdevice/Makefile b/libavdevice/Makefile
index be28f4a0ad..efc18cbcbd 100644
--- a/libavdevice/Makefile
+++ b/libavdevice/Makefile
@@ -17,6 +17,8 @@ OBJS-$(CONFIG_DV1394_INDEV)              += dv1394.o
 OBJS-$(CONFIG_JACK_INDEV)                += jack_audio.o
 OBJS-$(CONFIG_OSS_INDEV)                 += oss_audio.o
 OBJS-$(CONFIG_OSS_OUTDEV)                += oss_audio.o
+OBJS-$(CONFIG_SNDIO_INDEV)               += sndio_common.o sndio_dec.o
+OBJS-$(CONFIG_SNDIO_OUTDEV)              += sndio_common.o sndio_enc.o
 OBJS-$(CONFIG_V4L2_INDEV)                += v4l2.o
 OBJS-$(CONFIG_V4L_INDEV)                 += v4l.o
 OBJS-$(CONFIG_VFWCAP_INDEV)              += vfwcap.o
@@ -26,5 +28,6 @@ OBJS-$(CONFIG_X11_GRAB_DEVICE_INDEV)     += x11grab.o
 OBJS-$(CONFIG_LIBDC1394_INDEV)           += libdc1394.o
 
 SKIPHEADERS-$(HAVE_ALSA_ASOUNDLIB_H)     += alsa-audio.h
+SKIPHEADERS-$(HAVE_SNDIO_H)              += sndio_common.h
 
 include $(SUBDIR)../subdir.mak
diff --git a/libavdevice/alldevices.c b/libavdevice/alldevices.c
index d839e247e6..9cbb977813 100644
--- a/libavdevice/alldevices.c
+++ b/libavdevice/alldevices.c
@@ -44,6 +44,7 @@ void avdevice_register_all(void)
     REGISTER_INDEV    (DV1394, dv1394);
     REGISTER_INDEV    (JACK, jack);
     REGISTER_INOUTDEV (OSS, oss);
+    REGISTER_INOUTDEV (SNDIO, sndio);
     REGISTER_INDEV    (V4L2, v4l2);
     REGISTER_INDEV    (V4L, v4l);
     REGISTER_INDEV    (VFWCAP, vfwcap);
diff --git a/libavdevice/avdevice.h b/libavdevice/avdevice.h
index 683725c206..28c12f2ecd 100644
--- a/libavdevice/avdevice.h
+++ b/libavdevice/avdevice.h
@@ -22,8 +22,8 @@
 #include "libavutil/avutil.h"
 
 #define LIBAVDEVICE_VERSION_MAJOR 52
-#define LIBAVDEVICE_VERSION_MINOR  2
-#define LIBAVDEVICE_VERSION_MICRO  3
+#define LIBAVDEVICE_VERSION_MINOR  3
+#define LIBAVDEVICE_VERSION_MICRO  0
 
 #define LIBAVDEVICE_VERSION_INT AV_VERSION_INT(LIBAVDEVICE_VERSION_MAJOR, \
                                                LIBAVDEVICE_VERSION_MINOR, \
diff --git a/libavdevice/sndio_common.c b/libavdevice/sndio_common.c
new file mode 100644
index 0000000000..60b7970051
--- /dev/null
+++ b/libavdevice/sndio_common.c
@@ -0,0 +1,120 @@
+/*
+ * sndio play and grab interface
+ * Copyright (c) 2010 Jacob Meuser
+ *
+ * This file is part of Libav.
+ *
+ * Libav is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * Libav 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with Libav; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <stdint.h>
+#include <sndio.h>
+
+#include "libavformat/avformat.h"
+
+#include "sndio_common.h"
+
+static inline void movecb(void *addr, int delta)
+{
+    SndioData *s = addr;
+
+    s->hwpos += delta * s->channels * s->bps;
+}
+
+av_cold int ff_sndio_open(AVFormatContext *s1, int is_output,
+                          const char *audio_device)
+{
+    SndioData *s = s1->priv_data;
+    struct sio_hdl *hdl;
+    struct sio_par par;
+
+    hdl = sio_open(audio_device, is_output ? SIO_PLAY : SIO_REC, 0);
+    if (!hdl) {
+        av_log(s1, AV_LOG_ERROR, "Could not open sndio device\n");
+        return AVERROR(EIO);
+    }
+
+    sio_initpar(&par);
+
+    par.bits = 16;
+    par.sig  = 1;
+    par.le   = SIO_LE_NATIVE;
+
+    if (is_output)
+        par.pchan = s->channels;
+    else
+        par.rchan = s->channels;
+    par.rate = s->sample_rate;
+
+    if (!sio_setpar(hdl, &par) || !sio_getpar(hdl, &par)) {
+        av_log(s1, AV_LOG_ERROR, "Impossible to set sndio parameters, "
+               "channels: %d sample rate: %d\n", s->channels, s->sample_rate);
+        goto fail;
+    }
+
+    if (par.bits != 16 || par.sig != 1 || par.le != SIO_LE_NATIVE ||
+        (is_output  && (par.pchan != s->channels)) ||
+        (!is_output && (par.rchan != s->channels)) ||
+        (par.rate != s->sample_rate)) {
+        av_log(s1, AV_LOG_ERROR, "Could not set appropriate sndio parameters, "
+               "channels: %d sample rate: %d\n", s->channels, s->sample_rate);
+        goto fail;
+    }
+
+    s->buffer_size = par.round * par.bps *
+                     (is_output ? par.pchan : par.rchan);
+
+    if (is_output) {
+        s->buffer = av_malloc(s->buffer_size);
+        if (!s->buffer) {
+            av_log(s1, AV_LOG_ERROR, "Could not allocate buffer\n");
+            goto fail;
+        }
+    }
+
+    s->codec_id    = par.le ? CODEC_ID_PCM_S16LE : CODEC_ID_PCM_S16BE;
+    s->channels    = is_output ? par.pchan : par.rchan;
+    s->sample_rate = par.rate;
+    s->bps         = par.bps;
+
+    sio_onmove(hdl, movecb, s);
+
+    if (!sio_start(hdl)) {
+        av_log(s1, AV_LOG_ERROR, "Could not start sndio\n");
+        goto fail;
+    }
+
+    s->hdl = hdl;
+
+    return 0;
+
+fail:
+    av_freep(&s->buffer);
+
+    if (hdl)
+        sio_close(hdl);
+
+    return AVERROR(EIO);
+}
+
+int ff_sndio_close(SndioData *s)
+{
+    av_freep(&s->buffer);
+
+    if (s->hdl)
+        sio_close(s->hdl);
+
+    return 0;
+}
diff --git a/libavdevice/sndio_common.h b/libavdevice/sndio_common.h
new file mode 100644
index 0000000000..41c984ba79
--- /dev/null
+++ b/libavdevice/sndio_common.h
@@ -0,0 +1,46 @@
+/*
+ * sndio play and grab interface
+ * Copyright (c) 2010 Jacob Meuser
+ *
+ * This file is part of Libav.
+ *
+ * Libav is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * Libav 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with Libav; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef AVDEVICE_SNDIO_COMMON_H
+#define AVDEVICE_SNDIO_COMMON_H
+
+#include <stdint.h>
+#include <sndio.h>
+
+#include "libavformat/avformat.h"
+
+typedef struct {
+    struct sio_hdl *hdl;
+    enum CodecID codec_id;
+    int64_t hwpos;
+    int64_t softpos;
+    uint8_t *buffer;
+    int bps;
+    int buffer_size;
+    int buffer_offset;
+    int channels;
+    int sample_rate;
+} SndioData;
+
+int ff_sndio_open(AVFormatContext *s1, int is_output, const char *audio_device);
+int ff_sndio_close(SndioData *s);
+
+#endif /* AVDEVICE_SNDIO_COMMON_H */
diff --git a/libavdevice/sndio_dec.c b/libavdevice/sndio_dec.c
new file mode 100644
index 0000000000..ff2adeb0af
--- /dev/null
+++ b/libavdevice/sndio_dec.c
@@ -0,0 +1,108 @@
+/*
+ * sndio play and grab interface
+ * Copyright (c) 2010 Jacob Meuser
+ *
+ * This file is part of Libav.
+ *
+ * Libav is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * Libav 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with Libav; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <stdint.h>
+#include <sndio.h>
+
+#include "libavformat/avformat.h"
+
+#include "sndio_common.h"
+
+static av_cold int audio_read_header(AVFormatContext *s1,
+                                     AVFormatParameters *ap)
+{
+    SndioData *s = s1->priv_data;
+    AVStream *st;
+    int ret;
+
+    if (ap->sample_rate <= 0 || ap->channels <= 0)
+        return AVERROR(EINVAL);
+
+    st = av_new_stream(s1, 0);
+    if (!st)
+        return AVERROR(ENOMEM);
+
+    s->sample_rate = ap->sample_rate;
+    s->channels    = ap->channels;
+
+    ret = ff_sndio_open(s1, 0, s1->filename);
+    if (ret < 0)
+        return ret;
+
+    /* take real parameters */
+    st->codec->codec_type  = AVMEDIA_TYPE_AUDIO;
+    st->codec->codec_id    = s->codec_id;
+    st->codec->sample_rate = s->sample_rate;
+    st->codec->channels    = s->channels;
+
+    av_set_pts_info(st, 64, 1, 1000000);  /* 64 bits pts in us */
+
+    return 0;
+}
+
+static int audio_read_packet(AVFormatContext *s1, AVPacket *pkt)
+{
+    SndioData *s = s1->priv_data;
+    int64_t bdelay, cur_time;
+    int ret;
+
+    if ((ret = av_new_packet(pkt, s->buffer_size)) < 0)
+        return ret;
+
+    ret = sio_read(s->hdl, pkt->data, pkt->size);
+    if (ret == 0 || sio_eof(s->hdl)) {
+        av_free_packet(pkt);
+        return AVERROR_EOF;
+    }
+
+    pkt->size   = ret;
+    s->softpos += ret;
+
+    /* compute pts of the start of the packet */
+    cur_time = av_gettime();
+
+    bdelay = ret + s->hwpos - s->softpos;
+
+    /* convert to pts */
+    pkt->pts = cur_time - ((bdelay * 1000000) /
+        (s->bps * s->channels * s->sample_rate));
+
+    return 0;
+}
+
+static av_cold int audio_read_close(AVFormatContext *s1)
+{
+    SndioData *s = s1->priv_data;
+
+    ff_sndio_close(s);
+
+    return 0;
+}
+
+AVInputFormat ff_sndio_demuxer = {
+    .name           = "sndio",
+    .long_name      = NULL_IF_CONFIG_SMALL("sndio audio capture"),
+    .priv_data_size = sizeof(SndioData),
+    .read_header    = audio_read_header,
+    .read_packet    = audio_read_packet,
+    .read_close     = audio_read_close,
+    .flags          = AVFMT_NOFILE,
+};
diff --git a/libavdevice/sndio_enc.c b/libavdevice/sndio_enc.c
new file mode 100644
index 0000000000..6745ba4893
--- /dev/null
+++ b/libavdevice/sndio_enc.c
@@ -0,0 +1,95 @@
+/*
+ * sndio play and grab interface
+ * Copyright (c) 2010 Jacob Meuser
+ *
+ * This file is part of Libav.
+ *
+ * Libav is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * Libav 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with Libav; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <stdint.h>
+#include <sndio.h>
+
+#include "libavformat/avformat.h"
+
+#include "sndio_common.h"
+
+static av_cold int audio_write_header(AVFormatContext *s1)
+{
+    SndioData *s = s1->priv_data;
+    AVStream *st;
+    int ret;
+
+    st             = s1->streams[0];
+    s->sample_rate = st->codec->sample_rate;
+    s->channels    = st->codec->channels;
+
+    ret = ff_sndio_open(s1, 1, s1->filename);
+
+    return ret;
+}
+
+static int audio_write_packet(AVFormatContext *s1, AVPacket *pkt)
+{
+    SndioData *s = s1->priv_data;
+    uint8_t *buf= pkt->data;
+    int size = pkt->size;
+    int len, ret;
+
+    while (size > 0) {
+        len = s->buffer_size - s->buffer_offset;
+        if (len > size)
+            len = size;
+        memcpy(s->buffer + s->buffer_offset, buf, len);
+        buf  += len;
+        size -= len;
+        s->buffer_offset += len;
+        if (s->buffer_offset >= s->buffer_size) {
+            ret = sio_write(s->hdl, s->buffer, s->buffer_size);
+            if (ret == 0 || sio_eof(s->hdl))
+                return AVERROR(EIO);
+            s->softpos      += ret;
+            s->buffer_offset = 0;
+        }
+    }
+
+    return 0;
+}
+
+static int audio_write_trailer(AVFormatContext *s1)
+{
+    SndioData *s = s1->priv_data;
+
+    sio_write(s->hdl, s->buffer, s->buffer_offset);
+
+    ff_sndio_close(s);
+
+    return 0;
+}
+
+AVOutputFormat ff_sndio_muxer = {
+    .name           = "sndio",
+    .long_name      = NULL_IF_CONFIG_SMALL("sndio audio playback"),
+    .priv_data_size = sizeof(SndioData),
+    /* XXX: we make the assumption that the soundcard accepts this format */
+    /* XXX: find better solution with "preinit" method, needed also in
+       other formats */
+    .audio_codec    = AV_NE(CODEC_ID_PCM_S16BE, CODEC_ID_PCM_S16LE),
+    .video_codec    = CODEC_ID_NONE,
+    .write_header   = audio_write_header,
+    .write_packet   = audio_write_packet,
+    .write_trailer  = audio_write_trailer,
+    .flags          = AVFMT_NOFILE,
+};