--- /dev/null
+/*
+ * 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*);