X-Git-Url: https://git.pterodactylus.net/?a=blobdiff_plain;f=synfig-core%2Ftrunk%2Fsrc%2Fmodules%2Fmod_libavcodec%2Flibavformat%2Fdvcore.h;fp=synfig-core%2Ftrunk%2Fsrc%2Fmodules%2Fmod_libavcodec%2Flibavformat%2Fdvcore.h;h=b492cc59956a51e4ad1154a4fa8e2d52f45b6670;hb=16b3beced25134bef064705568ecb893a6be4e79;hp=0000000000000000000000000000000000000000;hpb=5a1d028f56182922addfed8f1f1c28fdde12756c;p=synfig.git

diff --git a/synfig-core/trunk/src/modules/mod_libavcodec/libavformat/dvcore.h b/synfig-core/trunk/src/modules/mod_libavcodec/libavformat/dvcore.h
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+/* 
+ * DV format muxer/demuxer
+ * Copyright (c) 2003 Roman Shaposhnik
+ *
+ * Many thanks to Dan Dennedy <dan@dennedy.org> for providing wealth
+ * of DV technical info.
+ *
+ * This library 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 of the License, or (at your option) any later version.
+ *
+ * This library 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 this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+#include <time.h>
+#include "avformat.h"
+
+/* 
+ * DVprofile is used to express the differences between various 
+ * DV flavors. For now it's primarily used for differentiating
+ * 525/60 and 625/50, but the plans are to use it for various
+ * DV specs as well (e.g. SMPTE314M vs. IEC 61834).
+ */
+typedef struct DVprofile {
+    int            dsf;                  /* value of the dsf in the DV header */
+    int            frame_size;           /* total size of one frame in bytes */
+    int            difseg_size;          /* number of DIF segments */
+    int            frame_rate;      
+    int            frame_rate_base;
+    int            ltc_divisor;          /* FPS from the LTS standpoint */
+    int            height;               /* picture height in pixels */
+    uint16_t       *video_place;         /* positions of all DV macro blocks */
+    
+    int            audio_stride;         /* size of audio_shuffle table */
+    int            audio_min_samples[3]; /* min ammount of audio samples */
+                                         /* for 48Khz, 44.1Khz and 32Khz */
+    int            audio_samples_dist[5];/* how many samples are supposed to be */
+                                         /* in each frame in a 5 frames window */
+    const uint16_t (*audio_shuffle)[9];  /* PCM shuffling table */
+} DVprofile;
+
+typedef struct DVMuxContext {
+    const DVprofile*  sys;    /* Current DV profile. E.g.: 525/60, 625/50 */
+    uint8_t     frame_buf[144000]; /* frame under contruction */
+    FifoBuffer  audio_data;   /* Fifo for storing excessive amounts of PCM */
+    int         frames;       /* Number of a current frame */
+    time_t      start_time;   /* Start time of recording */
+    uint8_t     aspect;       /* Aspect ID 0 - 4:3, 7 - 16:9 */
+    int         ast, vst;     /* Audio and Video stream indecies */
+    int         has_audio;    /* frame under contruction has audio */
+    int         has_video;    /* frame under contruction has video */
+} DVMuxContext;
+
+void dv_format_frame(DVMuxContext *, uint8_t*);
+void dv_inject_audio(DVMuxContext *, const uint8_t*, uint8_t*);
+void dv_inject_video(DVMuxContext *, const uint8_t*, uint8_t*);
+
+int  dv_extract_audio(uint8_t*, uint8_t*, AVCodecContext*);
+
+int  dv_audio_frame_size(const DVprofile*, int);
+
+void dv_assemble_frame(DVMuxContext *c, const uint8_t*, const uint8_t*, int);
+int  dv_core_init(DVMuxContext *, AVStream*[]);
+void dv_core_delete(DVMuxContext *);
+
+const DVprofile* dv_frame_profile(uint8_t*);