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authorDiego Biurrun <diego@biurrun.de>2012-03-18 19:01:45 +0100
committerDiego Biurrun <diego@biurrun.de>2012-03-27 11:15:47 +0200
commitd724fe665bf8a9bddb2d9f87713036aa786c4dac (patch)
treef8cf1a24502ae9660abf1390c9402a1678197f78 /libavcodec/dvdata.h
parent9f43fdda3ed0dd5812e59bc404dd740578a72e41 (diff)
downloadffmpeg-d724fe665bf8a9bddb2d9f87713036aa786c4dac.tar.gz
dv: Split off DV video decoder into its own file.
Diffstat (limited to 'libavcodec/dvdata.h')
-rw-r--r--libavcodec/dvdata.h44
1 files changed, 44 insertions, 0 deletions
diff --git a/libavcodec/dvdata.h b/libavcodec/dvdata.h
index d729b4dff5..8544d61a58 100644
--- a/libavcodec/dvdata.h
+++ b/libavcodec/dvdata.h
@@ -29,6 +29,8 @@
#include "libavutil/rational.h"
#include "avcodec.h"
+#include "dsputil.h"
+#include "get_bits.h"
typedef struct DVwork_chunk {
uint16_t buf_offset;
@@ -65,6 +67,20 @@ typedef struct DVprofile {
const uint8_t (*audio_shuffle)[9]; /* PCM shuffling table */
} DVprofile;
+typedef struct DVVideoContext {
+ const DVprofile *sys;
+ AVFrame picture;
+ AVCodecContext *avctx;
+ uint8_t *buf;
+
+ uint8_t dv_zigzag[2][64];
+
+ void (*get_pixels)(DCTELEM *block, const uint8_t *pixels, int line_size);
+ void (*fdct[2])(DCTELEM *block);
+ void (*idct_put[2])(uint8_t *dest, int line_size, DCTELEM *block);
+ me_cmp_func ildct_cmp;
+} DVVideoContext;
+
enum dv_section_type {
dv_sect_header = 0x1f,
dv_sect_subcode = 0x3f,
@@ -106,8 +122,36 @@ enum dv_pack_type {
*/
#define DV_MAX_BPM 8
+#define TEX_VLC_BITS 9
+
+extern RL_VLC_ELEM ff_dv_rl_vlc[1184];
+
const DVprofile* avpriv_dv_frame_profile(const DVprofile *sys,
const uint8_t* frame, unsigned buf_size);
const DVprofile* avpriv_dv_codec_profile(AVCodecContext* codec);
+int ff_dv_init_dynamic_tables(const DVprofile *d);
+int ff_dvvideo_init(AVCodecContext *avctx);
+
+static inline int dv_work_pool_size(const DVprofile *d)
+{
+ int size = d->n_difchan*d->difseg_size*27;
+ if (DV_PROFILE_IS_1080i50(d))
+ size -= 3*27;
+ if (DV_PROFILE_IS_720p50(d))
+ size -= 4*27;
+ return size;
+}
+
+static inline void dv_calculate_mb_xy(DVVideoContext *s, DVwork_chunk *work_chunk, int m, int *mb_x, int *mb_y)
+{
+ *mb_x = work_chunk->mb_coordinates[m] & 0xff;
+ *mb_y = work_chunk->mb_coordinates[m] >> 8;
+
+ /* We work with 720p frames split in half. The odd half-frame (chan==2,3) is displaced :-( */
+ if (s->sys->height == 720 && !(s->buf[1]&0x0C)) {
+ *mb_y -= (*mb_y>17)?18:-72; /* shifting the Y coordinate down by 72/2 macro blocks */
+ }
+}
+
#endif /* AVCODEC_DVDATA_H */