sndio support for playback and record

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

1 files changed, 95 insertions, 0 deletions

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,
+};