--- /dev/null
+/*
+ * RV10 codec
+ * Copyright (c) 2000,2001 Fabrice Bellard.
+ *
+ * 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
+ */
+
+/**
+ * @file rv10.c
+ * RV10 codec.
+ */
+
+#include "avcodec.h"
+#include "dsputil.h"
+#include "mpegvideo.h"
+
+//#define DEBUG
+
+#define DC_VLC_BITS 14 //FIXME find a better solution
+
+static const uint16_t 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_t 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_t 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_t 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_vlc2(&s->gb, rv_dc_lum.table, DC_VLC_BITS, 2);
+ 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_t)(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_t)(get_bits(&s->gb, 8) + 1);
+ else
+ code = (int8_t)(get_bits(&s->gb, 8));
+ } else if (code == 0x7f) {
+ get_bits(&s->gb, 11);
+ code = 1;
+ }
+ } else {
+ code -= 128;
+ }
+ } else {
+ code = get_vlc2(&s->gb, rv_dc_chrom.table, DC_VLC_BITS, 2);
+ /* same remark */
+ if (code < 0) {
+ code = get_bits(&s->gb, 9);
+ if (code == 0x1fc) {
+ code = (int8_t)(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 {
+ fprintf(stderr, "chroma dc error\n");
+ return 0xffff;
+ }
+ } else {
+ code -= 128;
+ }
+ }
+ return -code;
+}
+
+#ifdef CONFIG_ENCODERS
+
+/* write RV 1.0 compatible frame header */
+void rv10_encode_picture_header(MpegEncContext *s, int picture_number)
+{
+ int full_frame= 0;
+
+ 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 */
+ if(!full_frame){
+ 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;
+ }
+}
+
+#endif //CONFIG_ENCODERS
+
+/* read RV 1.0 compatible frame header */
+static int rv10_decode_picture_header(MpegEncContext *s)
+{
+ int mb_count, pb_frame, marker, full_frame, unk;
+
+ full_frame= s->avctx->slice_count==1;
+//printf("ff:%d\n", full_frame);
+ marker = get_bits(&s->gb, 1);
+
+ if (get_bits(&s->gb, 1))
+ s->pict_type = P_TYPE;
+ else
+ s->pict_type = I_TYPE;
+//printf("h:%X ver:%d\n",h,s->rv10_version);
+ if(!marker) printf("marker missing\n");
+ 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){
+ fprintf(stderr, "pb frame not supported\n");
+ return -1;
+ }
+
+ s->qscale = get_bits(&s->gb, 5);
+ if(s->qscale==0){
+ fprintf(stderr, "error, qscale:0\n");
+ return -1;
+ }
+
+ 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) || show_bits(&s->gb, 12)==0) {
+ 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;
+ }
+ unk= get_bits(&s->gb, 3); /* ignored */
+//printf("%d\n", unk);
+ s->f_code = 1;
+ s->unrestricted_mv = 1;
+
+ return mb_count;
+}
+
+static int rv10_decode_init(AVCodecContext *avctx)
+{
+ MpegEncContext *s = avctx->priv_data;
+ static int done=0;
+
+ s->avctx= avctx;
+ s->out_format = FMT_H263;
+
+ s->width = avctx->width;
+ s->height = avctx->height;
+
+ s->h263_rv10 = 1;
+ switch(avctx->sub_id){
+ case 0x10000000:
+ s->rv10_version= 0;
+ s->h263_long_vectors=0;
+ break;
+ case 0x10003000:
+ s->rv10_version= 3;
+ s->h263_long_vectors=1;
+ break;
+ case 0x10003001:
+ s->rv10_version= 3;
+ s->h263_long_vectors=0;
+ break;
+ default:
+ fprintf(stderr, "unknown header %X\n", avctx->sub_id);
+ }
+//printf("ver:%X\n", avctx->sub_id);
+ s->flags= avctx->flags;
+
+ if (MPV_common_init(s) < 0)
+ return -1;
+
+ h263_decode_init_vlc(s);
+
+ s->y_dc_scale_table=
+ s->c_dc_scale_table= ff_mpeg1_dc_scale_table;
+ s->progressive_sequence=1;
+
+ /* init rv vlc */
+ if (!done) {
+ init_vlc(&rv_dc_lum, DC_VLC_BITS, 256,
+ rv_lum_bits, 1, 1,
+ rv_lum_code, 2, 2);
+ init_vlc(&rv_dc_chrom, DC_VLC_BITS, 256,
+ rv_chrom_bits, 1, 1,
+ rv_chrom_code, 2, 2);
+ done = 1;
+ }
+
+ avctx->pix_fmt = PIX_FMT_YUV420P;
+
+ return 0;
+}
+
+static int rv10_decode_end(AVCodecContext *avctx)
+{
+ MpegEncContext *s = avctx->priv_data;
+
+ MPV_common_end(s);
+ return 0;
+}
+
+static int rv10_decode_packet(AVCodecContext *avctx,
+ uint8_t *buf, int buf_size)
+{
+ MpegEncContext *s = avctx->priv_data;
+ int i, mb_count, mb_pos, left;
+
+ init_get_bits(&s->gb, buf, buf_size*8);
+
+ mb_count = rv10_decode_picture_header(s);
+ if (mb_count < 0) {
+ fprintf(stderr, "HEADER ERROR\n");
+ return -1;
+ }
+
+ if (s->mb_x >= s->mb_width ||
+ s->mb_y >= s->mb_height) {
+ fprintf(stderr, "POS ERROR %d %d\n", s->mb_x, s->mb_y);
+ 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) {
+ fprintf(stderr, "COUNT ERROR\n");
+ return -1;
+ }
+
+ if (s->mb_x == 0 && s->mb_y == 0) {
+ if(MPV_frame_start(s, avctx) < 0)
+ return -1;
+ }
+
+#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;
+
+ if(s->mb_y==0) s->first_slice_line=1;
+
+ s->block_wrap[0]=
+ s->block_wrap[1]=
+ s->block_wrap[2]=
+ s->block_wrap[3]= s->mb_width*2 + 2;
+ s->block_wrap[4]=
+ s->block_wrap[5]= s->mb_width + 2;
+ ff_init_block_index(s);
+ /* decode each macroblock */
+ for(i=0;i<mb_count;i++) {
+ ff_update_block_index(s);
+#ifdef DEBUG
+ printf("**mb x=%d y=%d\n", s->mb_x, s->mb_y);
+#endif
+
+ s->dsp.clear_blocks(s->block[0]);
+ s->mv_dir = MV_DIR_FORWARD;
+ s->mv_type = MV_TYPE_16X16;
+ if (ff_h263_decode_mb(s, s->block) == SLICE_ERROR) {
+ fprintf(stderr, "ERROR at MB %d %d\n", s->mb_x, s->mb_y);
+ return -1;
+ }
+ ff_h263_update_motion_val(s);
+ MPV_decode_mb(s, s->block);
+ if (++s->mb_x == s->mb_width) {
+ s->mb_x = 0;
+ s->mb_y++;
+ ff_init_block_index(s);
+ s->first_slice_line=0;
+ }
+ }
+
+ return buf_size;
+}
+
+static int rv10_decode_frame(AVCodecContext *avctx,
+ void *data, int *data_size,
+ uint8_t *buf, int buf_size)
+{
+ MpegEncContext *s = avctx->priv_data;
+ int i;
+ AVFrame *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;
+ }
+
+ if(avctx->slice_count){
+ for(i=0; i<avctx->slice_count; i++){
+ int offset= avctx->slice_offset[i];
+ int size;
+
+ if(i+1 == avctx->slice_count)
+ size= buf_size - offset;
+ else
+ size= avctx->slice_offset[i+1] - offset;
+
+ if( rv10_decode_packet(avctx, buf+offset, size) < 0 )
+ return -1;
+ }
+ }else{
+ if( rv10_decode_packet(avctx, buf, buf_size) < 0 )
+ return -1;
+ }
+
+ if(s->mb_y>=s->mb_height){
+ MPV_frame_end(s);
+
+ *pict= *(AVFrame*)&s->current_picture;
+
+ *data_size = sizeof(AVFrame);
+ }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,
+ CODEC_CAP_DR1
+};
projects / synfig.git / blobdiff