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support for the THP game format by Marco Gerards, mgerards xs4all nl

Originally committed as revision 8587 to svn://svn.ffmpeg.org/ffmpeg/trunk

Diego Biurrun authored on 2007/04/01 23:28:48
Showing 9 changed files
... ...
@@ -75,6 +75,7 @@ version <next>
75 75
 - DCA decoder
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 - DXA demuxer and decoder
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 - DNxHD decoder
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+- Gamecube movie (.THP) playback system
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79 80
 version 0.4.9-pre1:
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... ...
@@ -901,6 +901,8 @@ library:
901 901
 @item DXA @tab    @tab X
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 @tab This format is used in non-Windows version of Feeble Files game and
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 different game cutscenes repacked for use with ScummVM.
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+@item THP @tab    @tab X
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+@tab Used on the Nintendo GameCube (video only)
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 @end multitable
905 907
 
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 @code{X} means that encoding (resp. decoding) is supported.
... ...
@@ -130,6 +130,7 @@ void avcodec_register_all(void)
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     REGISTER_DECODER(SVQ3, svq3);
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     REGISTER_ENCDEC (TARGA, targa);
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     REGISTER_DECODER(THEORA, theora);
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+    REGISTER_DECODER(THP, thp);
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     REGISTER_DECODER(TIERTEXSEQVIDEO, tiertexseqvideo);
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     REGISTER_DECODER(TIFF, tiff);
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     REGISTER_DECODER(TRUEMOTION1, truemotion1);
... ...
@@ -158,6 +158,7 @@ enum CodecID {
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     CODEC_ID_FFH264,
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     CODEC_ID_DXA,
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     CODEC_ID_DNXHD,
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+    CODEC_ID_THP,
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     /* various pcm "codecs" */
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     CODEC_ID_PCM_S16LE= 0x10000,
... ...
@@ -2329,6 +2330,7 @@ extern AVCodec svq1_decoder;
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 extern AVCodec svq3_decoder;
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 extern AVCodec targa_decoder;
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 extern AVCodec theora_decoder;
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+extern AVCodec thp_decoder;
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 extern AVCodec tiertexseqvideo_decoder;
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 extern AVCodec tiff_decoder;
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 extern AVCodec truemotion1_decoder;
... ...
@@ -2044,6 +2044,8 @@ static int mjpeg_decode_frame(AVCodecContext *avctx,
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                         uint8_t x = *(src++);
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                         *(dst++) = x;
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+                        if (avctx->codec_id != CODEC_ID_THP)
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+                        {
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                         if (x == 0xff)
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                         {
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                             while(src<buf_end && x == 0xff)
... ...
@@ -2054,6 +2056,7 @@ static int mjpeg_decode_frame(AVCodecContext *avctx,
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                             else if (x)
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                                 break;
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                         }
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+                        }
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                     }
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                     init_get_bits(&s->gb, s->buffer, (dst - s->buffer)*8);
2059 2060
 
... ...
@@ -2583,6 +2586,19 @@ AVCodec mjpeg_decoder = {
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     NULL
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 };
2585 2585
 
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+AVCodec thp_decoder = {
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+    "thp",
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+    CODEC_TYPE_VIDEO,
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+    CODEC_ID_THP,
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+    sizeof(MJpegDecodeContext),
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+    mjpeg_decode_init,
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+    NULL,
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+    mjpeg_decode_end,
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+    mjpeg_decode_frame,
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+    CODEC_CAP_DR1,
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+    NULL
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+};
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+
2586 2599
 AVCodec mjpegb_decoder = {
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     "mjpegb",
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     CODEC_TYPE_VIDEO,
... ...
@@ -120,6 +120,7 @@ OBJS-$(CONFIG_SMACKER_DEMUXER)           += smacker.o
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 OBJS-$(CONFIG_SOL_DEMUXER)               += sol.o
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 OBJS-$(CONFIG_SWF_DEMUXER)               += swf.o
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 OBJS-$(CONFIG_SWF_MUXER)                 += swf.o
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+OBJS-$(CONFIG_THP_DEMUXER)               += thp.o
123 124
 OBJS-$(CONFIG_TIERTEXSEQ_DEMUXER)        += tiertexseq.o
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 OBJS-$(CONFIG_TTA_DEMUXER)               += tta.o
125 126
 OBJS-$(CONFIG_V4L2_DEMUXER)              += v4l2.o
... ...
@@ -142,6 +142,7 @@ void av_register_all(void)
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     REGISTER_MUXDEMUX(SWF, swf);
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     REGISTER_MUXER   (TG2, tg2);
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     REGISTER_MUXER   (TGP, tgp);
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+    REGISTER_DEMUXER (THP, thp);
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     REGISTER_DEMUXER (TIERTEXSEQ, tiertexseq);
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     REGISTER_DEMUXER (TTA, tta);
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     REGISTER_DEMUXER (V4L2, v4l2);
... ...
@@ -168,6 +168,7 @@ extern AVOutputFormat yuv4mpegpipe_muxer;
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 extern AVInputFormat yuv4mpegpipe_demuxer;
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 extern AVInputFormat tiertexseq_demuxer;
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 extern AVInputFormat x11_grab_device_demuxer;
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+extern AVInputFormat thp_demuxer;
171 172
 
172 173
 /* raw.c */
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 int pcm_read_seek(AVFormatContext *s,
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new file mode 100644
... ...
@@ -0,0 +1,170 @@
0
+/*
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+ * THP Demuxer
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+ * Copyright (c) 2007 Marco Gerards.
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+ *
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+ * This file is part of FFmpeg.
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+ *
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+ * FFmpeg is free software; you can redistribute it and/or
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+ * modify it under the terms of the GNU Lesser General Public
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+ * License as published by the Free Software Foundation; either
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+ * version 2.1 of the License, or (at your option) any later version.
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+ *
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+ * FFmpeg is distributed in the hope that it will be useful,
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+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
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+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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+ * Lesser General Public License for more details.
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+ *
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+ * You should have received a copy of the GNU Lesser General Public
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+ * License along with FFmpeg; if not, write to the Free Software
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+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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+ */
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+
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+
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+#include "avformat.h"
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+#include "allformats.h"
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+
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+typedef struct ThpDemuxContext {
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+    int              version;
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+    int              first_frame;
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+    int              first_framesz;
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+    int              last_frame;
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+    int              compoff;
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+    int              framecnt;
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+    AVRational       fps;
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+    int              frame;
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+    int              next_frame;
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+    int              next_framesz;
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+    int              video_stream_index;
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+    int              compcount;
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+    unsigned char    components[16];
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+    AVStream*        vst;
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+    int              has_audio;
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+} ThpDemuxContext;
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+
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+
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+static int thp_probe(AVProbeData *p)
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+{
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+    /* check file header */
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+    if (p->buf_size < 4)
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+        return 0;
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+
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+    if (AV_RL32(p->buf) == MKTAG('T', 'H', 'P', '\0'))
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+        return AVPROBE_SCORE_MAX;
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+    else
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+        return 0;
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+}
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+
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+static int thp_read_header(AVFormatContext *s,
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+                           AVFormatParameters *ap)
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+{
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+  ThpDemuxContext *thp = s->priv_data;
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+  AVStream *st;
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+  ByteIOContext *pb = &s->pb;
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+  int i;
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+
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+  /* Read the file header.  */
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+
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+                         get_be32(pb); /* Skip Magic.  */
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+  thp->version         = get_be32(pb);
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+
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+                         get_be32(pb); /* Max buf size.  */
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+                         get_be32(pb); /* Max samples.  */
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+
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+  thp->fps             = av_d2q(av_int2flt(get_be32(pb)), INT_MAX);
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+  thp->framecnt        = get_be32(pb);
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+  thp->first_framesz   = get_be32(pb);
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+                         get_be32(pb); /* Data size.  */
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+
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+  thp->compoff         = get_be32(pb);
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+                         get_be32(pb); /* offsetDataOffset.  */
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+  thp->first_frame     = get_be32(pb);
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+  thp->last_frame      = get_be32(pb);
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+
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+  thp->next_framesz    = thp->first_framesz;
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+  thp->next_frame      = thp->first_frame;
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+
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+  /* Read the component structure.  */
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+  url_fseek (pb, thp->compoff, SEEK_SET);
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+  thp->compcount       = get_be32(pb);
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+
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+  /* Read the list of component types.  */
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+  get_buffer(pb, thp->components, 16);
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+
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+  for (i = 0; i < thp->compcount; i++) {
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+      if (thp->components[i] == 0) {
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+          if (thp->vst != 0)
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+             break;
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+
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+          /* Video component.  */
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+          st = av_new_stream(s, 0);
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+          if (!st)
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+             return AVERROR_NOMEM;
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+
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+          /* The denominator and numerator are switched because 1/fps
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+             is required.  */
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+          av_set_pts_info(st, 64, thp->fps.den, thp->fps.num);
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+          st->codec->codec_type = CODEC_TYPE_VIDEO;
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+          st->codec->codec_id = CODEC_ID_THP;
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+          st->codec->codec_tag = 0;  /* no fourcc */
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+          st->codec->width = get_be32(pb);
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+          st->codec->height = get_be32(pb);
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+          st->codec->sample_rate = av_q2d(thp->fps);
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+          thp->vst = st;
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+          thp->video_stream_index = st->index;
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+
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+          if (thp->version == 0x11000)
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+             get_be32(pb); /* Unknown.  */
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+        }
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+      else if (thp->components[i] == 1) {
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+          /* XXX: Required for audio playback.  */
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+          thp->has_audio = 1;
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+      }
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+    }
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+
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+  return 0;
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+}
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+
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+static int thp_read_packet(AVFormatContext *s,
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+                            AVPacket *pkt)
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+{
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+    ThpDemuxContext *thp = s->priv_data;
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+    ByteIOContext *pb = &s->pb;
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+    int size;
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+    int ret;
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+
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+    /* Terminate when last frame is reached.  */
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+    if (thp->frame >= thp->framecnt)
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+       return AVERROR_IO;
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+
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+    url_fseek(pb, thp->next_frame, SEEK_SET);
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+
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+    /* Locate the next frame and read out its size.  */
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+    thp->next_frame += thp->next_framesz;
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+    thp->next_framesz = get_be32(pb);
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+
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+                        get_be32(pb); /* Previous total size.  */
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+    size              = get_be32(pb); /* Total size of this frame.  */
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+
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+    if (thp->has_audio)
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+                        get_be32(pb); /* Audio size.  */
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+
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+    ret = av_get_packet(pb, pkt, size);
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+    if (ret != size) {
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+       av_free_packet(pkt);
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+       return AVERROR_IO;
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+    }
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+
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+    pkt->stream_index = thp->video_stream_index;
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+    thp->frame++;
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+
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+    return 0;
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+}
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+
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+AVInputFormat thp_demuxer = {
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+    "thp",
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+    "THP",
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+    sizeof(ThpDemuxContext),
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+    thp_probe,
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+    thp_read_header,
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+    thp_read_packet
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+};