ffmpeg-2.8.5

git-svn-id: svn://kolibrios.org@6147 a494cfbc-eb01-0410-851d-a64ba20cac60
2016-02-05 22:08:02 +00:00
parent a08f61ddb9
commit a4b787f4b8
5429 changed files with 1356786 additions and 0 deletions
--- a/contrib/sdk/sources/ffmpeg/ffmpeg-2.8/libavdevice/sndio_dec.c
+++ b/contrib/sdk/sources/ffmpeg/ffmpeg-2.8/libavdevice/sndio_dec.c
@@ -0,0 +1,121 @@
+/*
+ * sndio play and grab interface
+ * Copyright (c) 2010 Jacob Meuser
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg 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.
+ *
+ * FFmpeg 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 FFmpeg; 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 "libavutil/internal.h"
+#include "libavutil/opt.h"
+#include "libavutil/time.h"
+
+#include "libavformat/avformat.h"
+#include "libavformat/internal.h"
+
+#include "libavdevice/sndio.h"
+
+static av_cold int audio_read_header(AVFormatContext *s1)
+{
+    SndioData *s = s1->priv_data;
+    AVStream *st;
+    int ret;
+
+    st = avformat_new_stream(s1, NULL);
+    if (!st)
+        return AVERROR(ENOMEM);
+
+    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;
+
+    avpriv_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;
+}
+
+static const AVOption options[] = {
+    { "sample_rate", "", offsetof(SndioData, sample_rate), AV_OPT_TYPE_INT, {.i64 = 48000}, 1, INT_MAX, AV_OPT_FLAG_DECODING_PARAM },
+    { "channels",    "", offsetof(SndioData, channels),    AV_OPT_TYPE_INT, {.i64 = 2},     1, INT_MAX, AV_OPT_FLAG_DECODING_PARAM },
+    { NULL },
+};
+
+static const AVClass sndio_demuxer_class = {
+    .class_name     = "sndio indev",
+    .item_name      = av_default_item_name,
+    .option         = options,
+    .version        = LIBAVUTIL_VERSION_INT,
+    .category       = AV_CLASS_CATEGORY_DEVICE_AUDIO_INPUT,
+};
+
+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,
+    .priv_class     = &sndio_demuxer_class,
+};