Initial revision

Originally committed as revision 5 to svn://svn.ffmpeg.org/ffmpeg/trunk

1 files changed, 487 insertions, 0 deletions

diff --git a/libavcodec/rv10.c b/libavcodec/rv10.c
new file mode 100644
index 0000000000..b03cd02937
--- /dev/null
+++ b/libavcodec/rv10.c
@@ -0,0 +1,487 @@
+/*
+ * RV10 codec
+ * Copyright (c) 2000,2001 Gerard Lantau.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include "common.h"
+#include "dsputil.h"
+#include "avcodec.h"
+#include "mpegvideo.h"
+
+//#define DEBUG
+
+static const UINT16 rv_lum_code[256] =
+{
+ 0x3e7f, 0x0f00, 0x0f01, 0x0f02, 0x0f03, 0x0f04, 0x0f05, 0x0f06,
+ 0x0f07, 0x0f08, 0x0f09, 0x0f0a, 0x0f0b, 0x0f0c, 0x0f0d, 0x0f0e,
+ 0x0f0f, 0x0f10, 0x0f11, 0x0f12, 0x0f13, 0x0f14, 0x0f15, 0x0f16,
+ 0x0f17, 0x0f18, 0x0f19, 0x0f1a, 0x0f1b, 0x0f1c, 0x0f1d, 0x0f1e,
+ 0x0f1f, 0x0f20, 0x0f21, 0x0f22, 0x0f23, 0x0f24, 0x0f25, 0x0f26,
+ 0x0f27, 0x0f28, 0x0f29, 0x0f2a, 0x0f2b, 0x0f2c, 0x0f2d, 0x0f2e,
+ 0x0f2f, 0x0f30, 0x0f31, 0x0f32, 0x0f33, 0x0f34, 0x0f35, 0x0f36,
+ 0x0f37, 0x0f38, 0x0f39, 0x0f3a, 0x0f3b, 0x0f3c, 0x0f3d, 0x0f3e,
+ 0x0f3f, 0x0380, 0x0381, 0x0382, 0x0383, 0x0384, 0x0385, 0x0386,
+ 0x0387, 0x0388, 0x0389, 0x038a, 0x038b, 0x038c, 0x038d, 0x038e,
+ 0x038f, 0x0390, 0x0391, 0x0392, 0x0393, 0x0394, 0x0395, 0x0396,
+ 0x0397, 0x0398, 0x0399, 0x039a, 0x039b, 0x039c, 0x039d, 0x039e,
+ 0x039f, 0x00c0, 0x00c1, 0x00c2, 0x00c3, 0x00c4, 0x00c5, 0x00c6,
+ 0x00c7, 0x00c8, 0x00c9, 0x00ca, 0x00cb, 0x00cc, 0x00cd, 0x00ce,
+ 0x00cf, 0x0050, 0x0051, 0x0052, 0x0053, 0x0054, 0x0055, 0x0056,
+ 0x0057, 0x0020, 0x0021, 0x0022, 0x0023, 0x000c, 0x000d, 0x0004,
+ 0x0000, 0x0005, 0x000e, 0x000f, 0x0024, 0x0025, 0x0026, 0x0027,
+ 0x0058, 0x0059, 0x005a, 0x005b, 0x005c, 0x005d, 0x005e, 0x005f,
+ 0x00d0, 0x00d1, 0x00d2, 0x00d3, 0x00d4, 0x00d5, 0x00d6, 0x00d7,
+ 0x00d8, 0x00d9, 0x00da, 0x00db, 0x00dc, 0x00dd, 0x00de, 0x00df,
+ 0x03a0, 0x03a1, 0x03a2, 0x03a3, 0x03a4, 0x03a5, 0x03a6, 0x03a7,
+ 0x03a8, 0x03a9, 0x03aa, 0x03ab, 0x03ac, 0x03ad, 0x03ae, 0x03af,
+ 0x03b0, 0x03b1, 0x03b2, 0x03b3, 0x03b4, 0x03b5, 0x03b6, 0x03b7,
+ 0x03b8, 0x03b9, 0x03ba, 0x03bb, 0x03bc, 0x03bd, 0x03be, 0x03bf,
+ 0x0f40, 0x0f41, 0x0f42, 0x0f43, 0x0f44, 0x0f45, 0x0f46, 0x0f47,
+ 0x0f48, 0x0f49, 0x0f4a, 0x0f4b, 0x0f4c, 0x0f4d, 0x0f4e, 0x0f4f,
+ 0x0f50, 0x0f51, 0x0f52, 0x0f53, 0x0f54, 0x0f55, 0x0f56, 0x0f57,
+ 0x0f58, 0x0f59, 0x0f5a, 0x0f5b, 0x0f5c, 0x0f5d, 0x0f5e, 0x0f5f,
+ 0x0f60, 0x0f61, 0x0f62, 0x0f63, 0x0f64, 0x0f65, 0x0f66, 0x0f67,
+ 0x0f68, 0x0f69, 0x0f6a, 0x0f6b, 0x0f6c, 0x0f6d, 0x0f6e, 0x0f6f,
+ 0x0f70, 0x0f71, 0x0f72, 0x0f73, 0x0f74, 0x0f75, 0x0f76, 0x0f77,
+ 0x0f78, 0x0f79, 0x0f7a, 0x0f7b, 0x0f7c, 0x0f7d, 0x0f7e, 0x0f7f,
+};
+
+static const UINT8 rv_lum_bits[256] = 
+{
+ 14, 12, 12, 12, 12, 12, 12, 12,
+ 12, 12, 12, 12, 12, 12, 12, 12,
+ 12, 12, 12, 12, 12, 12, 12, 12,
+ 12, 12, 12, 12, 12, 12, 12, 12,
+ 12, 12, 12, 12, 12, 12, 12, 12,
+ 12, 12, 12, 12, 12, 12, 12, 12,
+ 12, 12, 12, 12, 12, 12, 12, 12,
+ 12, 12, 12, 12, 12, 12, 12, 12,
+ 12, 10, 10, 10, 10, 10, 10, 10,
+ 10, 10, 10, 10, 10, 10, 10, 10,
+ 10, 10, 10, 10, 10, 10, 10, 10,
+ 10, 10, 10, 10, 10, 10, 10, 10,
+ 10,  8,  8,  8,  8,  8,  8,  8,
+  8,  8,  8,  8,  8,  8,  8,  8,
+  8,  7,  7,  7,  7,  7,  7,  7,
+  7,  6,  6,  6,  6,  5,  5,  4,
+  2,  4,  5,  5,  6,  6,  6,  6,
+  7,  7,  7,  7,  7,  7,  7,  7,
+  8,  8,  8,  8,  8,  8,  8,  8,
+  8,  8,  8,  8,  8,  8,  8,  8,
+ 10, 10, 10, 10, 10, 10, 10, 10,
+ 10, 10, 10, 10, 10, 10, 10, 10,
+ 10, 10, 10, 10, 10, 10, 10, 10,
+ 10, 10, 10, 10, 10, 10, 10, 10,
+ 12, 12, 12, 12, 12, 12, 12, 12,
+ 12, 12, 12, 12, 12, 12, 12, 12,
+ 12, 12, 12, 12, 12, 12, 12, 12,
+ 12, 12, 12, 12, 12, 12, 12, 12,
+ 12, 12, 12, 12, 12, 12, 12, 12,
+ 12, 12, 12, 12, 12, 12, 12, 12,
+ 12, 12, 12, 12, 12, 12, 12, 12,
+ 12, 12, 12, 12, 12, 12, 12, 12,
+};
+
+static const UINT16 rv_chrom_code[256] =
+{
+ 0xfe7f, 0x3f00, 0x3f01, 0x3f02, 0x3f03, 0x3f04, 0x3f05, 0x3f06,
+ 0x3f07, 0x3f08, 0x3f09, 0x3f0a, 0x3f0b, 0x3f0c, 0x3f0d, 0x3f0e,
+ 0x3f0f, 0x3f10, 0x3f11, 0x3f12, 0x3f13, 0x3f14, 0x3f15, 0x3f16,
+ 0x3f17, 0x3f18, 0x3f19, 0x3f1a, 0x3f1b, 0x3f1c, 0x3f1d, 0x3f1e,
+ 0x3f1f, 0x3f20, 0x3f21, 0x3f22, 0x3f23, 0x3f24, 0x3f25, 0x3f26,
+ 0x3f27, 0x3f28, 0x3f29, 0x3f2a, 0x3f2b, 0x3f2c, 0x3f2d, 0x3f2e,
+ 0x3f2f, 0x3f30, 0x3f31, 0x3f32, 0x3f33, 0x3f34, 0x3f35, 0x3f36,
+ 0x3f37, 0x3f38, 0x3f39, 0x3f3a, 0x3f3b, 0x3f3c, 0x3f3d, 0x3f3e,
+ 0x3f3f, 0x0f80, 0x0f81, 0x0f82, 0x0f83, 0x0f84, 0x0f85, 0x0f86,
+ 0x0f87, 0x0f88, 0x0f89, 0x0f8a, 0x0f8b, 0x0f8c, 0x0f8d, 0x0f8e,
+ 0x0f8f, 0x0f90, 0x0f91, 0x0f92, 0x0f93, 0x0f94, 0x0f95, 0x0f96,
+ 0x0f97, 0x0f98, 0x0f99, 0x0f9a, 0x0f9b, 0x0f9c, 0x0f9d, 0x0f9e,
+ 0x0f9f, 0x03c0, 0x03c1, 0x03c2, 0x03c3, 0x03c4, 0x03c5, 0x03c6,
+ 0x03c7, 0x03c8, 0x03c9, 0x03ca, 0x03cb, 0x03cc, 0x03cd, 0x03ce,
+ 0x03cf, 0x00e0, 0x00e1, 0x00e2, 0x00e3, 0x00e4, 0x00e5, 0x00e6,
+ 0x00e7, 0x0030, 0x0031, 0x0032, 0x0033, 0x0008, 0x0009, 0x0002,
+ 0x0000, 0x0003, 0x000a, 0x000b, 0x0034, 0x0035, 0x0036, 0x0037,
+ 0x00e8, 0x00e9, 0x00ea, 0x00eb, 0x00ec, 0x00ed, 0x00ee, 0x00ef,
+ 0x03d0, 0x03d1, 0x03d2, 0x03d3, 0x03d4, 0x03d5, 0x03d6, 0x03d7,
+ 0x03d8, 0x03d9, 0x03da, 0x03db, 0x03dc, 0x03dd, 0x03de, 0x03df,
+ 0x0fa0, 0x0fa1, 0x0fa2, 0x0fa3, 0x0fa4, 0x0fa5, 0x0fa6, 0x0fa7,
+ 0x0fa8, 0x0fa9, 0x0faa, 0x0fab, 0x0fac, 0x0fad, 0x0fae, 0x0faf,
+ 0x0fb0, 0x0fb1, 0x0fb2, 0x0fb3, 0x0fb4, 0x0fb5, 0x0fb6, 0x0fb7,
+ 0x0fb8, 0x0fb9, 0x0fba, 0x0fbb, 0x0fbc, 0x0fbd, 0x0fbe, 0x0fbf,
+ 0x3f40, 0x3f41, 0x3f42, 0x3f43, 0x3f44, 0x3f45, 0x3f46, 0x3f47,
+ 0x3f48, 0x3f49, 0x3f4a, 0x3f4b, 0x3f4c, 0x3f4d, 0x3f4e, 0x3f4f,
+ 0x3f50, 0x3f51, 0x3f52, 0x3f53, 0x3f54, 0x3f55, 0x3f56, 0x3f57,
+ 0x3f58, 0x3f59, 0x3f5a, 0x3f5b, 0x3f5c, 0x3f5d, 0x3f5e, 0x3f5f,
+ 0x3f60, 0x3f61, 0x3f62, 0x3f63, 0x3f64, 0x3f65, 0x3f66, 0x3f67,
+ 0x3f68, 0x3f69, 0x3f6a, 0x3f6b, 0x3f6c, 0x3f6d, 0x3f6e, 0x3f6f,
+ 0x3f70, 0x3f71, 0x3f72, 0x3f73, 0x3f74, 0x3f75, 0x3f76, 0x3f77,
+ 0x3f78, 0x3f79, 0x3f7a, 0x3f7b, 0x3f7c, 0x3f7d, 0x3f7e, 0x3f7f,
+};
+
+static const UINT8 rv_chrom_bits[256] =
+{
+ 16, 14, 14, 14, 14, 14, 14, 14,
+ 14, 14, 14, 14, 14, 14, 14, 14,
+ 14, 14, 14, 14, 14, 14, 14, 14,
+ 14, 14, 14, 14, 14, 14, 14, 14,
+ 14, 14, 14, 14, 14, 14, 14, 14,
+ 14, 14, 14, 14, 14, 14, 14, 14,
+ 14, 14, 14, 14, 14, 14, 14, 14,
+ 14, 14, 14, 14, 14, 14, 14, 14,
+ 14, 12, 12, 12, 12, 12, 12, 12,
+ 12, 12, 12, 12, 12, 12, 12, 12,
+ 12, 12, 12, 12, 12, 12, 12, 12,
+ 12, 12, 12, 12, 12, 12, 12, 12,
+ 12, 10, 10, 10, 10, 10, 10, 10,
+ 10, 10, 10, 10, 10, 10, 10, 10,
+ 10,  8,  8,  8,  8,  8,  8,  8,
+  8,  6,  6,  6,  6,  4,  4,  3,
+  2,  3,  4,  4,  6,  6,  6,  6,
+  8,  8,  8,  8,  8,  8,  8,  8,
+ 10, 10, 10, 10, 10, 10, 10, 10,
+ 10, 10, 10, 10, 10, 10, 10, 10,
+ 12, 12, 12, 12, 12, 12, 12, 12,
+ 12, 12, 12, 12, 12, 12, 12, 12,
+ 12, 12, 12, 12, 12, 12, 12, 12,
+ 12, 12, 12, 12, 12, 12, 12, 12,
+ 14, 14, 14, 14, 14, 14, 14, 14,
+ 14, 14, 14, 14, 14, 14, 14, 14,
+ 14, 14, 14, 14, 14, 14, 14, 14,
+ 14, 14, 14, 14, 14, 14, 14, 14,
+ 14, 14, 14, 14, 14, 14, 14, 14,
+ 14, 14, 14, 14, 14, 14, 14, 14,
+ 14, 14, 14, 14, 14, 14, 14, 14,
+ 14, 14, 14, 14, 14, 14, 14, 14,
+};
+
+static VLC rv_dc_lum, rv_dc_chrom;
+
+int rv_decode_dc(MpegEncContext *s, int n)
+{
+    int code;
+
+    if (n < 4) {
+        code = get_vlc(&s->gb, &rv_dc_lum);
+        if (code < 0) {
+            /* XXX: I don't understand why they use LONGER codes than
+               necessary. The following code would be completely useless
+               if they had thought about it !!! */
+            code = get_bits(&s->gb, 7);
+            if (code == 0x7c) {
+                code = (INT8)(get_bits(&s->gb, 7) + 1);
+            } else if (code == 0x7d) {
+                code = -128 + get_bits(&s->gb, 7);
+            } else if (code == 0x7e) {
+                if (get_bits(&s->gb, 1) == 0)
+                    code = (INT8)(get_bits(&s->gb, 8) + 1);
+                else
+                    code = (INT8)(get_bits(&s->gb, 8));
+            } else if (code == 0x7f) {
+                get_bits(&s->gb, 11);
+                code = 1;
+            }
+        } else {
+            code -= 128;
+        }
+    } else {
+        code = get_vlc(&s->gb, &rv_dc_chrom);
+        /* same remark */
+        if (code < 0) {
+            code = get_bits(&s->gb, 9);
+            if (code == 0x1fc) {
+                code = (INT8)(get_bits(&s->gb, 7) + 1);
+            } else if (code == 0x1fd) {
+                code = -128 + get_bits(&s->gb, 7);
+            } else if (code == 0x1fe) {
+                get_bits(&s->gb, 9);
+                code = 1;
+            } else {
+                return 0xffff;
+            }
+        } else {
+            code -= 128;
+        }
+    }
+    return -code;
+}
+
+/* write RV 1.0 compatible frame header */
+void rv10_encode_picture_header(MpegEncContext *s, int picture_number)
+{
+    align_put_bits(&s->pb);
+
+    put_bits(&s->pb, 1, 1);	/* marker */
+
+    put_bits(&s->pb, 1, (s->pict_type == P_TYPE));
+
+    put_bits(&s->pb, 1, 0);	/* not PB frame */
+
+    put_bits(&s->pb, 5, s->qscale);
+
+    if (s->pict_type == I_TYPE) {
+	/* specific MPEG like DC coding not used */
+    }
+    /* if multiple packets per frame are sent, the position at which
+       to display the macro blocks is coded here */
+    put_bits(&s->pb, 6, 0);	/* mb_x */
+    put_bits(&s->pb, 6, 0);	/* mb_y */
+    put_bits(&s->pb, 12, s->mb_width * s->mb_height);
+
+    put_bits(&s->pb, 3, 0);	/* ignored */
+}
+
+static int get_num(GetBitContext *gb)
+{
+    int n, n1;
+
+    n = get_bits(gb, 16);
+    if (n >= 0x4000) {
+        return n - 0x4000;
+    } else {
+        n1 = get_bits(gb, 16);
+        return (n << 16) | n1;
+    }
+}
+
+/* read RV 1.0 compatible frame header */
+static int rv10_decode_picture_header(MpegEncContext *s)
+{
+    int mb_count, pb_frame, marker, h, full_frame;
+    
+    /* skip packet header */
+    h = get_bits(&s->gb, 8);
+    if ((h & 0xc0) == 0xc0) {
+        int len, pos;
+        full_frame = 1;
+        len = get_num(&s->gb);
+        pos = get_num(&s->gb);
+    } else {
+        int seq, frame_size, pos;
+        full_frame = 0;
+        seq = get_bits(&s->gb, 8);
+        frame_size = get_num(&s->gb);
+        pos = get_num(&s->gb);
+    }
+    /* picture number */
+    get_bits(&s->gb, 8);
+
+    marker = get_bits(&s->gb, 1);
+
+    if (get_bits(&s->gb, 1))
+        s->pict_type = P_TYPE;
+    else
+        s->pict_type = I_TYPE;
+
+    pb_frame = get_bits(&s->gb, 1);
+
+#ifdef DEBUG
+    printf("pict_type=%d pb_frame=%d\n", s->pict_type, pb_frame);
+#endif
+    
+    if (pb_frame)
+        return -1;
+
+    s->qscale = get_bits(&s->gb, 5);
+
+    if (s->pict_type == I_TYPE) {
+        if (s->rv10_version == 3) {
+            /* specific MPEG like DC coding not used */
+            s->last_dc[0] = get_bits(&s->gb, 8);
+            s->last_dc[1] = get_bits(&s->gb, 8);
+            s->last_dc[2] = get_bits(&s->gb, 8);
+#ifdef DEBUG
+            printf("DC:%d %d %d\n",
+                   s->last_dc[0],
+                   s->last_dc[1],
+                   s->last_dc[2]);
+#endif
+        }
+    }
+    /* if multiple packets per frame are sent, the position at which
+       to display the macro blocks is coded here */
+    if (!full_frame) {
+        s->mb_x = get_bits(&s->gb, 6);	/* mb_x */
+        s->mb_y = get_bits(&s->gb, 6);	/* mb_y */
+        mb_count = get_bits(&s->gb, 12);
+    } else {
+        s->mb_x = 0;
+        s->mb_y = 0;
+        mb_count = s->mb_width * s->mb_height;
+    }
+
+    get_bits(&s->gb, 3);	/* ignored */
+    s->f_code = 1;
+    s->unrestricted_mv = 1;
+#if 0
+    s->h263_long_vectors = 1;
+#endif
+    return mb_count;
+}
+
+static int rv10_decode_init(AVCodecContext *avctx)
+{
+    MpegEncContext *s = avctx->priv_data;
+    static int done;
+
+    s->out_format = FMT_H263;
+
+    s->width = avctx->width;
+    s->height = avctx->height;
+
+    s->h263_rv10 = 1;
+    s->rv10_version = avctx->sub_id;
+
+    if (MPV_common_init(s) < 0)
+        return -1;
+
+    h263_decode_init_vlc(s);
+
+    /* init rv vlc */
+    if (!done) {
+        init_vlc(&rv_dc_lum, 9, 256, 
+                 rv_lum_bits, 1, 1,
+                 rv_lum_code, 2, 2);
+        init_vlc(&rv_dc_chrom, 9, 256, 
+                 rv_chrom_bits, 1, 1,
+                 rv_chrom_code, 2, 2);
+        done = 1;
+    }
+
+    return 0;
+}
+
+static int rv10_decode_end(AVCodecContext *avctx)
+{
+    MpegEncContext *s = avctx->priv_data;
+
+    MPV_common_end(s);
+    return 0;
+}
+
+static int rv10_decode_frame(AVCodecContext *avctx, 
+                             void *data, int *data_size,
+                             UINT8 *buf, int buf_size)
+{
+    MpegEncContext *s = avctx->priv_data;
+    int i, mb_count, mb_pos, left;
+    DCTELEM block[6][64];
+    AVPicture *pict = data; 
+
+#ifdef DEBUG
+    printf("*****frame %d size=%d\n", avctx->frame_number, buf_size);
+#endif
+
+    /* no supplementary picture */
+    if (buf_size == 0) {
+        *data_size = 0;
+        return 0;
+    }
+
+    init_get_bits(&s->gb, buf, buf_size);
+
+    mb_count = rv10_decode_picture_header(s);
+    if (mb_count < 0) {
+#ifdef DEBUG
+        printf("HEADER ERROR\n");
+#endif
+        return -1;
+    }
+    
+    if (s->mb_x >= s->mb_width ||
+        s->mb_y >= s->mb_height) {
+#ifdef DEBUG
+        printf("POS ERROR %d %d\n", s->mb_x, s->mb_y);
+#endif
+        return -1;
+    }
+    mb_pos = s->mb_y * s->mb_width + s->mb_x;
+    left = s->mb_width * s->mb_height - mb_pos;
+    if (mb_count > left) {
+#ifdef DEBUG
+        printf("COUNT ERROR\n");
+#endif
+        return -1;
+    }
+
+    if (s->mb_x == 0 && s->mb_y == 0) {
+        MPV_frame_start(s);
+    }
+
+#ifdef DEBUG
+    printf("qscale=%d\n", s->qscale);
+#endif
+
+    /* default quantization values */
+    s->y_dc_scale = 8;
+    s->c_dc_scale = 8;
+    s->rv10_first_dc_coded[0] = 0;
+    s->rv10_first_dc_coded[1] = 0;
+    s->rv10_first_dc_coded[2] = 0;
+    
+    /* decode each macroblock */
+    for(i=0;i<mb_count;i++) {
+#ifdef DEBUG
+        printf("**mb x=%d y=%d\n", s->mb_x, s->mb_y);
+#endif
+        
+        memset(block, 0, sizeof(block));
+        s->mv_dir = MV_DIR_FORWARD;
+        s->mv_type = MV_TYPE_16X16; 
+        if (h263_decode_mb(s, block) < 0) {
+#ifdef DEBUG
+            printf("ERROR\n");
+#endif
+            return -1;
+        }
+        MPV_decode_mb(s, block);
+        if (++s->mb_x == s->mb_width) {
+            s->mb_x = 0;
+            s->mb_y++;
+        }
+    }
+
+    if (s->mb_x == 0 &&
+        s->mb_y == s->mb_height) {
+        MPV_frame_end(s);
+        
+        pict->data[0] = s->current_picture[0];
+        pict->data[1] = s->current_picture[1];
+        pict->data[2] = s->current_picture[2];
+        pict->linesize[0] = s->linesize;
+        pict->linesize[1] = s->linesize / 2;
+        pict->linesize[2] = s->linesize / 2;
+        
+        avctx->quality = s->qscale;
+        *data_size = sizeof(AVPicture);
+    } else {
+        *data_size = 0;
+    }
+    return buf_size;
+}
+
+AVCodec rv10_decoder = {
+    "rv10",
+    CODEC_TYPE_VIDEO,
+    CODEC_ID_RV10,
+    sizeof(MpegEncContext),
+    rv10_decode_init,
+    NULL,
+    rv10_decode_end,
+    rv10_decode_frame,
+};