adding ffmpeg specific version

1 files changed, 206 insertions, 0 deletions

diff --git a/ffmpeg1/libavformat/thp.c b/ffmpeg1/libavformat/thp.c
new file mode 100644
index 0000000..3717b8f
--- /dev/null
+++ b/ffmpeg1/libavformat/thp.c
@@ -0,0 +1,206 @@
+/*
+ * THP Demuxer
+ * Copyright (c) 2007 Marco Gerards
+ *
+ * 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 "libavutil/intreadwrite.h"
+#include "libavutil/intfloat.h"
+#include "avformat.h"
+#include "internal.h"
+
+typedef struct ThpDemuxContext {
+    int              version;
+    int              first_frame;
+    int              first_framesz;
+    int              last_frame;
+    int              compoff;
+    int              framecnt;
+    AVRational       fps;
+    int              frame;
+    int              next_frame;
+    int              next_framesz;
+    int              video_stream_index;
+    int              audio_stream_index;
+    int              compcount;
+    unsigned char    components[16];
+    AVStream*        vst;
+    int              has_audio;
+    unsigned         audiosize;
+} ThpDemuxContext;
+
+
+static int thp_probe(AVProbeData *p)
+{
+    /* check file header */
+    if (AV_RL32(p->buf) == MKTAG('T', 'H', 'P', '\0'))
+        return AVPROBE_SCORE_MAX;
+    else
+        return 0;
+}
+
+static int thp_read_header(AVFormatContext *s)
+{
+    ThpDemuxContext *thp = s->priv_data;
+    AVStream *st;
+    AVIOContext *pb = s->pb;
+    int64_t fsize= avio_size(pb);
+    int i;
+
+    /* Read the file header.  */
+                           avio_rb32(pb); /* Skip Magic.  */
+    thp->version         = avio_rb32(pb);
+
+                           avio_rb32(pb); /* Max buf size.  */
+                           avio_rb32(pb); /* Max samples.  */
+
+    thp->fps             = av_d2q(av_int2float(avio_rb32(pb)), INT_MAX);
+    thp->framecnt        = avio_rb32(pb);
+    thp->first_framesz   = avio_rb32(pb);
+    pb->maxsize          = avio_rb32(pb);
+    if(fsize>0 && (!pb->maxsize || fsize < pb->maxsize))
+        pb->maxsize= fsize;
+
+    thp->compoff         = avio_rb32(pb);
+                           avio_rb32(pb); /* offsetDataOffset.  */
+    thp->first_frame     = avio_rb32(pb);
+    thp->last_frame      = avio_rb32(pb);
+
+    thp->next_framesz    = thp->first_framesz;
+    thp->next_frame      = thp->first_frame;
+
+    /* Read the component structure.  */
+    avio_seek (pb, thp->compoff, SEEK_SET);
+    thp->compcount       = avio_rb32(pb);
+
+    /* Read the list of component types.  */
+    avio_read(pb, thp->components, 16);
+
+    for (i = 0; i < thp->compcount; i++) {
+        if (thp->components[i] == 0) {
+            if (thp->vst != 0)
+                break;
+
+            /* Video component.  */
+            st = avformat_new_stream(s, NULL);
+            if (!st)
+                return AVERROR(ENOMEM);
+
+            /* The denominator and numerator are switched because 1/fps
+               is required.  */
+            avpriv_set_pts_info(st, 64, thp->fps.den, thp->fps.num);
+            st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
+            st->codec->codec_id = AV_CODEC_ID_THP;
+            st->codec->codec_tag = 0;  /* no fourcc */
+            st->codec->width = avio_rb32(pb);
+            st->codec->height = avio_rb32(pb);
+            st->codec->sample_rate = av_q2d(thp->fps);
+            st->nb_frames =
+            st->duration = thp->framecnt;
+            thp->vst = st;
+            thp->video_stream_index = st->index;
+
+            if (thp->version == 0x11000)
+                avio_rb32(pb); /* Unknown.  */
+        } else if (thp->components[i] == 1) {
+            if (thp->has_audio != 0)
+                break;
+
+            /* Audio component.  */
+            st = avformat_new_stream(s, NULL);
+            if (!st)
+                return AVERROR(ENOMEM);
+
+            st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
+            st->codec->codec_id = AV_CODEC_ID_ADPCM_THP;
+            st->codec->codec_tag = 0;  /* no fourcc */
+            st->codec->channels    = avio_rb32(pb); /* numChannels.  */
+            st->codec->sample_rate = avio_rb32(pb); /* Frequency.  */
+
+            avpriv_set_pts_info(st, 64, 1, st->codec->sample_rate);
+
+            thp->audio_stream_index = st->index;
+            thp->has_audio = 1;
+        }
+    }
+
+    return 0;
+}
+
+static int thp_read_packet(AVFormatContext *s,
+                            AVPacket *pkt)
+{
+    ThpDemuxContext *thp = s->priv_data;
+    AVIOContext *pb = s->pb;
+    unsigned int size;
+    int ret;
+
+    if (thp->audiosize == 0) {
+        /* Terminate when last frame is reached.  */
+        if (thp->frame >= thp->framecnt)
+            return AVERROR_EOF;
+
+        avio_seek(pb, thp->next_frame, SEEK_SET);
+
+        /* Locate the next frame and read out its size.  */
+        thp->next_frame += thp->next_framesz;
+        thp->next_framesz = avio_rb32(pb);
+
+                        avio_rb32(pb); /* Previous total size.  */
+        size          = avio_rb32(pb); /* Total size of this frame.  */
+
+        /* Store the audiosize so the next time this function is called,
+           the audio can be read.  */
+        if (thp->has_audio)
+            thp->audiosize = avio_rb32(pb); /* Audio size.  */
+        else
+            thp->frame++;
+
+        ret = av_get_packet(pb, pkt, size);
+        if (ret != size) {
+            av_free_packet(pkt);
+            return AVERROR(EIO);
+        }
+
+        pkt->stream_index = thp->video_stream_index;
+    } else {
+        ret = av_get_packet(pb, pkt, thp->audiosize);
+        if (ret != thp->audiosize) {
+            av_free_packet(pkt);
+            return AVERROR(EIO);
+        }
+
+        pkt->stream_index = thp->audio_stream_index;
+        if (thp->audiosize >= 8)
+            pkt->duration = AV_RB32(&pkt->data[4]);
+
+        thp->audiosize = 0;
+        thp->frame++;
+    }
+
+    return 0;
+}
+
+AVInputFormat ff_thp_demuxer = {
+    .name           = "thp",
+    .long_name      = NULL_IF_CONFIG_SMALL("THP"),
+    .priv_data_size = sizeof(ThpDemuxContext),
+    .read_probe     = thp_probe,
+    .read_header    = thp_read_header,
+    .read_packet    = thp_read_packet
+};