ffmpeg-2.1.1: move directory

git-svn-id: svn://kolibrios.org@6148 a494cfbc-eb01-0410-851d-a64ba20cac60
2016-02-05 22:14:10 +00:00
parent a4b787f4b8
commit ecf3e862ea
4011 changed files with 1868 additions and 4 deletions
--- a/contrib/sdk/sources/ffmpeg/ffmpeg-2.1/libavformat/soxdec.c
+++ b/contrib/sdk/sources/ffmpeg/ffmpeg-2.1/libavformat/soxdec.c
@@ -0,0 +1,134 @@
+/*
+ * SoX native format demuxer
+ * Copyright (c) 2009 Daniel Verkamp <daniel@drv.nu>
+ *
+ * Based on libSoX sox-fmt.c
+ * Copyright (c) 2008 robs@users.sourceforge.net
+ *
+ * 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
+ */
+
+/**
+ * @file
+ * SoX native format demuxer
+ * @author Daniel Verkamp
+ * @see http://wiki.multimedia.cx/index.php?title=SoX_native_intermediate_format
+ */
+
+#include "libavutil/intreadwrite.h"
+#include "libavutil/intfloat.h"
+#include "libavutil/dict.h"
+#include "avformat.h"
+#include "internal.h"
+#include "pcm.h"
+#include "sox.h"
+
+static int sox_probe(AVProbeData *p)
+{
+    if (AV_RL32(p->buf) == SOX_TAG || AV_RB32(p->buf) == SOX_TAG)
+        return AVPROBE_SCORE_MAX;
+    return 0;
+}
+
+static int sox_read_header(AVFormatContext *s)
+{
+    AVIOContext *pb = s->pb;
+    unsigned header_size, comment_size;
+    double sample_rate, sample_rate_frac;
+    AVStream *st;
+
+    st = avformat_new_stream(s, NULL);
+    if (!st)
+        return AVERROR(ENOMEM);
+
+    st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
+
+    if (avio_rl32(pb) == SOX_TAG) {
+        st->codec->codec_id = AV_CODEC_ID_PCM_S32LE;
+        header_size         = avio_rl32(pb);
+        avio_skip(pb, 8); /* sample count */
+        sample_rate         = av_int2double(avio_rl64(pb));
+        st->codec->channels = avio_rl32(pb);
+        comment_size        = avio_rl32(pb);
+    } else {
+        st->codec->codec_id = AV_CODEC_ID_PCM_S32BE;
+        header_size         = avio_rb32(pb);
+        avio_skip(pb, 8); /* sample count */
+        sample_rate         = av_int2double(avio_rb64(pb));
+        st->codec->channels = avio_rb32(pb);
+        comment_size        = avio_rb32(pb);
+    }
+
+    if (comment_size > 0xFFFFFFFFU - SOX_FIXED_HDR - 4U) {
+        av_log(s, AV_LOG_ERROR, "invalid comment size (%u)\n", comment_size);
+        return AVERROR_INVALIDDATA;
+    }
+
+    if (sample_rate <= 0 || sample_rate > INT_MAX) {
+        av_log(s, AV_LOG_ERROR, "invalid sample rate (%f)\n", sample_rate);
+        return AVERROR_INVALIDDATA;
+    }
+
+    sample_rate_frac = sample_rate - floor(sample_rate);
+    if (sample_rate_frac)
+        av_log(s, AV_LOG_WARNING,
+               "truncating fractional part of sample rate (%f)\n",
+               sample_rate_frac);
+
+    if ((header_size + 4) & 7 || header_size < SOX_FIXED_HDR + comment_size
+        || st->codec->channels > 65535) /* Reserve top 16 bits */ {
+        av_log(s, AV_LOG_ERROR, "invalid header\n");
+        return AVERROR_INVALIDDATA;
+    }
+
+    if (comment_size && comment_size < UINT_MAX) {
+        char *comment = av_malloc(comment_size+1);
+        if(!comment)
+            return AVERROR(ENOMEM);
+        if (avio_read(pb, comment, comment_size) != comment_size) {
+            av_freep(&comment);
+            return AVERROR(EIO);
+        }
+        comment[comment_size] = 0;
+
+        av_dict_set(&s->metadata, "comment", comment,
+                               AV_DICT_DONT_STRDUP_VAL);
+    }
+
+    avio_skip(pb, header_size - SOX_FIXED_HDR - comment_size);
+
+    st->codec->sample_rate           = sample_rate;
+    st->codec->bits_per_coded_sample = 32;
+    st->codec->bit_rate              = st->codec->sample_rate *
+                                       st->codec->bits_per_coded_sample *
+                                       st->codec->channels;
+    st->codec->block_align           = st->codec->bits_per_coded_sample *
+                                       st->codec->channels / 8;
+
+    avpriv_set_pts_info(st, 64, 1, st->codec->sample_rate);
+
+    return 0;
+}
+
+AVInputFormat ff_sox_demuxer = {
+    .name           = "sox",
+    .long_name      = NULL_IF_CONFIG_SMALL("SoX native"),
+    .read_probe     = sox_probe,
+    .read_header    = sox_read_header,
+    .read_packet    = ff_pcm_read_packet,
+    .read_seek      = ff_pcm_read_seek,
+};