split raw.c into rawdec.c and rawenc.c

Originally committed as revision 24997 to svn://svn.ffmpeg.org/ffmpeg/trunk

1 files changed, 221 insertions, 0 deletions

diff --git a/libavformat/rawdec.c b/libavformat/rawdec.c
new file mode 100644
index 0000000000..e093969414
--- /dev/null
+++ b/libavformat/rawdec.c
@@ -0,0 +1,221 @@
+/*
+ * RAW demuxers
+ * Copyright (c) 2001 Fabrice Bellard
+ * Copyright (c) 2005 Alex Beregszaszi
+ *
+ * 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 "avformat.h"
+#include "rawdec.h"
+
+/* raw input */
+int ff_raw_read_header(AVFormatContext *s, AVFormatParameters *ap)
+{
+    AVStream *st;
+    enum CodecID id;
+
+    st = av_new_stream(s, 0);
+    if (!st)
+        return AVERROR(ENOMEM);
+
+        id = s->iformat->value;
+        if (id == CODEC_ID_RAWVIDEO) {
+            st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
+        } else {
+            st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
+        }
+        st->codec->codec_id = id;
+
+        switch(st->codec->codec_type) {
+        case AVMEDIA_TYPE_AUDIO:
+            st->codec->sample_rate = ap->sample_rate;
+            if(ap->channels) st->codec->channels = ap->channels;
+            else             st->codec->channels = 1;
+            st->codec->bits_per_coded_sample = av_get_bits_per_sample(st->codec->codec_id);
+            assert(st->codec->bits_per_coded_sample > 0);
+            st->codec->block_align = st->codec->bits_per_coded_sample*st->codec->channels/8;
+            av_set_pts_info(st, 64, 1, st->codec->sample_rate);
+            break;
+        case AVMEDIA_TYPE_VIDEO:
+            if(ap->time_base.num)
+                av_set_pts_info(st, 64, ap->time_base.num, ap->time_base.den);
+            else
+                av_set_pts_info(st, 64, 1, 25);
+            st->codec->width = ap->width;
+            st->codec->height = ap->height;
+            st->codec->pix_fmt = ap->pix_fmt;
+            if(st->codec->pix_fmt == PIX_FMT_NONE)
+                st->codec->pix_fmt= PIX_FMT_YUV420P;
+            break;
+        default:
+            return -1;
+        }
+    return 0;
+}
+
+#define RAW_PACKET_SIZE 1024
+
+int ff_raw_read_partial_packet(AVFormatContext *s, AVPacket *pkt)
+{
+    int ret, size;
+
+    size = RAW_PACKET_SIZE;
+
+    if (av_new_packet(pkt, size) < 0)
+        return AVERROR(ENOMEM);
+
+    pkt->pos= url_ftell(s->pb);
+    pkt->stream_index = 0;
+    ret = get_partial_buffer(s->pb, pkt->data, size);
+    if (ret < 0) {
+        av_free_packet(pkt);
+        return ret;
+    }
+    pkt->size = ret;
+    return ret;
+}
+
+int ff_raw_audio_read_header(AVFormatContext *s,
+                             AVFormatParameters *ap)
+{
+    AVStream *st = av_new_stream(s, 0);
+    if (!st)
+        return AVERROR(ENOMEM);
+    st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
+    st->codec->codec_id = s->iformat->value;
+    st->need_parsing = AVSTREAM_PARSE_FULL;
+    /* the parameters will be extracted from the compressed bitstream */
+
+    return 0;
+}
+
+/* MPEG-1/H.263 input */
+int ff_raw_video_read_header(AVFormatContext *s,
+                             AVFormatParameters *ap)
+{
+    AVStream *st;
+
+    st = av_new_stream(s, 0);
+    if (!st)
+        return AVERROR(ENOMEM);
+
+    st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
+    st->codec->codec_id = s->iformat->value;
+    st->need_parsing = AVSTREAM_PARSE_FULL;
+
+    /* for MJPEG, specify frame rate */
+    /* for MPEG-4 specify it, too (most MPEG-4 streams do not have the fixed_vop_rate set ...)*/
+    if (ap->time_base.num) {
+        st->codec->time_base= ap->time_base;
+    } else if ( st->codec->codec_id == CODEC_ID_MJPEG ||
+                st->codec->codec_id == CODEC_ID_MPEG4 ||
+                st->codec->codec_id == CODEC_ID_DIRAC ||
+                st->codec->codec_id == CODEC_ID_DNXHD ||
+                st->codec->codec_id == CODEC_ID_VC1   ||
+                st->codec->codec_id == CODEC_ID_H264) {
+        st->codec->time_base= (AVRational){1,25};
+    }
+    av_set_pts_info(st, 64, 1, 1200000);
+
+    return 0;
+}
+
+/* Note: Do not forget to add new entries to the Makefile as well. */
+
+#if CONFIG_GSM_DEMUXER
+AVInputFormat gsm_demuxer = {
+    "gsm",
+    NULL_IF_CONFIG_SMALL("raw GSM"),
+    0,
+    NULL,
+    ff_raw_audio_read_header,
+    ff_raw_read_partial_packet,
+    .flags= AVFMT_GENERIC_INDEX,
+    .extensions = "gsm",
+    .value = CODEC_ID_GSM,
+};
+#endif
+
+#if CONFIG_MJPEG_DEMUXER
+AVInputFormat mjpeg_demuxer = {
+    "mjpeg",
+    NULL_IF_CONFIG_SMALL("raw MJPEG video"),
+    0,
+    NULL,
+    ff_raw_video_read_header,
+    ff_raw_read_partial_packet,
+    .flags= AVFMT_GENERIC_INDEX,
+    .extensions = "mjpg,mjpeg",
+    .value = CODEC_ID_MJPEG,
+};
+#endif
+
+#if CONFIG_MLP_DEMUXER
+AVInputFormat mlp_demuxer = {
+    "mlp",
+    NULL_IF_CONFIG_SMALL("raw MLP"),
+    0,
+    NULL,
+    ff_raw_audio_read_header,
+    ff_raw_read_partial_packet,
+    .flags= AVFMT_GENERIC_INDEX,
+    .extensions = "mlp",
+    .value = CODEC_ID_MLP,
+};
+#endif
+
+#if CONFIG_TRUEHD_DEMUXER
+AVInputFormat truehd_demuxer = {
+    "truehd",
+    NULL_IF_CONFIG_SMALL("raw TrueHD"),
+    0,
+    NULL,
+    ff_raw_audio_read_header,
+    ff_raw_read_partial_packet,
+    .flags= AVFMT_GENERIC_INDEX,
+    .extensions = "thd",
+    .value = CODEC_ID_TRUEHD,
+};
+#endif
+
+#if CONFIG_SHORTEN_DEMUXER
+AVInputFormat shorten_demuxer = {
+    "shn",
+    NULL_IF_CONFIG_SMALL("raw Shorten"),
+    0,
+    NULL,
+    ff_raw_audio_read_header,
+    ff_raw_read_partial_packet,
+    .flags= AVFMT_GENERIC_INDEX,
+    .extensions = "shn",
+    .value = CODEC_ID_SHORTEN,
+};
+#endif
+
+#if CONFIG_VC1_DEMUXER
+AVInputFormat vc1_demuxer = {
+    "vc1",
+    NULL_IF_CONFIG_SMALL("raw VC-1"),
+    0,
+    NULL /* vc1_probe */,
+    ff_raw_video_read_header,
+    ff_raw_read_partial_packet,
+    .extensions = "vc1",
+    .value = CODEC_ID_VC1,
+};
+#endif