Originally committed as revision 8881 to svn://svn.ffmpeg.org/ffmpeg/trunk
Diego Biurrun authored on 2007/05/04 08:50:24... | ... |
@@ -276,6 +276,7 @@ OBJS-$(CONFIG_XVID) += xvidff.o xvid_rc.o |
276 | 276 |
OBJS-$(CONFIG_AAC_PARSER) += parser.o |
277 | 277 |
OBJS-$(CONFIG_AC3_PARSER) += parser.o ac3tab.o |
278 | 278 |
OBJS-$(CONFIG_CAVSVIDEO_PARSER) += cavs.o parser.o |
279 |
+OBJS-$(CONFIG_DCA_PARSER) += dca_parser.o |
|
279 | 280 |
OBJS-$(CONFIG_DVBSUB_PARSER) += dvbsubdec.o |
280 | 281 |
OBJS-$(CONFIG_DVDSUB_PARSER) += dvdsubdec.o |
281 | 282 |
OBJS-$(CONFIG_H261_PARSER) += h261.o |
... | ... |
@@ -35,15 +35,7 @@ |
35 | 35 |
#include "bitstream.h" |
36 | 36 |
#include "dcadata.h" |
37 | 37 |
#include "dcahuff.h" |
38 |
-#include "parser.h" |
|
39 |
- |
|
40 |
-/** DCA syncwords, also used for bitstream type detection */ |
|
41 |
-//@{ |
|
42 |
-#define DCA_MARKER_RAW_BE 0x7FFE8001 |
|
43 |
-#define DCA_MARKER_RAW_LE 0xFE7F0180 |
|
44 |
-#define DCA_MARKER_14B_BE 0x1FFFE800 |
|
45 |
-#define DCA_MARKER_14B_LE 0xFF1F00E8 |
|
46 |
-//@} |
|
38 |
+#include "dca.h" |
|
47 | 39 |
|
48 | 40 |
//#define TRACE |
49 | 41 |
|
... | ... |
@@ -1255,102 +1247,3 @@ AVCodec dca_decoder = { |
1255 | 1255 |
.init = dca_decode_init, |
1256 | 1256 |
.decode = dca_decode_frame, |
1257 | 1257 |
}; |
1258 |
- |
|
1259 |
-#ifdef CONFIG_DCA_PARSER |
|
1260 |
- |
|
1261 |
-typedef struct DCAParseContext { |
|
1262 |
- ParseContext pc; |
|
1263 |
- uint32_t lastmarker; |
|
1264 |
-} DCAParseContext; |
|
1265 |
- |
|
1266 |
-#define IS_MARKER(state, i, buf, buf_size) \ |
|
1267 |
- ((state == DCA_MARKER_14B_LE && (i < buf_size-2) && (buf[i+1] & 0xF0) == 0xF0 && buf[i+2] == 0x07) \ |
|
1268 |
- || (state == DCA_MARKER_14B_BE && (i < buf_size-2) && buf[i+1] == 0x07 && (buf[i+2] & 0xF0) == 0xF0) \ |
|
1269 |
- || state == DCA_MARKER_RAW_LE || state == DCA_MARKER_RAW_BE) |
|
1270 |
- |
|
1271 |
-/** |
|
1272 |
- * finds the end of the current frame in the bitstream. |
|
1273 |
- * @return the position of the first byte of the next frame, or -1 |
|
1274 |
- */ |
|
1275 |
-static int dca_find_frame_end(DCAParseContext * pc1, const uint8_t * buf, |
|
1276 |
- int buf_size) |
|
1277 |
-{ |
|
1278 |
- int start_found, i; |
|
1279 |
- uint32_t state; |
|
1280 |
- ParseContext *pc = &pc1->pc; |
|
1281 |
- |
|
1282 |
- start_found = pc->frame_start_found; |
|
1283 |
- state = pc->state; |
|
1284 |
- |
|
1285 |
- i = 0; |
|
1286 |
- if (!start_found) { |
|
1287 |
- for (i = 0; i < buf_size; i++) { |
|
1288 |
- state = (state << 8) | buf[i]; |
|
1289 |
- if (IS_MARKER(state, i, buf, buf_size)) { |
|
1290 |
- if (pc1->lastmarker && state == pc1->lastmarker) { |
|
1291 |
- start_found = 1; |
|
1292 |
- break; |
|
1293 |
- } else if (!pc1->lastmarker) { |
|
1294 |
- start_found = 1; |
|
1295 |
- pc1->lastmarker = state; |
|
1296 |
- break; |
|
1297 |
- } |
|
1298 |
- } |
|
1299 |
- } |
|
1300 |
- } |
|
1301 |
- if (start_found) { |
|
1302 |
- for (; i < buf_size; i++) { |
|
1303 |
- state = (state << 8) | buf[i]; |
|
1304 |
- if (state == pc1->lastmarker && IS_MARKER(state, i, buf, buf_size)) { |
|
1305 |
- pc->frame_start_found = 0; |
|
1306 |
- pc->state = -1; |
|
1307 |
- return i - 3; |
|
1308 |
- } |
|
1309 |
- } |
|
1310 |
- } |
|
1311 |
- pc->frame_start_found = start_found; |
|
1312 |
- pc->state = state; |
|
1313 |
- return END_NOT_FOUND; |
|
1314 |
-} |
|
1315 |
- |
|
1316 |
-static int dca_parse_init(AVCodecParserContext * s) |
|
1317 |
-{ |
|
1318 |
- DCAParseContext *pc1 = s->priv_data; |
|
1319 |
- |
|
1320 |
- pc1->lastmarker = 0; |
|
1321 |
- return 0; |
|
1322 |
-} |
|
1323 |
- |
|
1324 |
-static int dca_parse(AVCodecParserContext * s, |
|
1325 |
- AVCodecContext * avctx, |
|
1326 |
- uint8_t ** poutbuf, int *poutbuf_size, |
|
1327 |
- const uint8_t * buf, int buf_size) |
|
1328 |
-{ |
|
1329 |
- DCAParseContext *pc1 = s->priv_data; |
|
1330 |
- ParseContext *pc = &pc1->pc; |
|
1331 |
- int next; |
|
1332 |
- |
|
1333 |
- if (s->flags & PARSER_FLAG_COMPLETE_FRAMES) { |
|
1334 |
- next = buf_size; |
|
1335 |
- } else { |
|
1336 |
- next = dca_find_frame_end(pc1, buf, buf_size); |
|
1337 |
- |
|
1338 |
- if (ff_combine_frame(pc, next, (uint8_t **) & buf, &buf_size) < 0) { |
|
1339 |
- *poutbuf = NULL; |
|
1340 |
- *poutbuf_size = 0; |
|
1341 |
- return buf_size; |
|
1342 |
- } |
|
1343 |
- } |
|
1344 |
- *poutbuf = (uint8_t *) buf; |
|
1345 |
- *poutbuf_size = buf_size; |
|
1346 |
- return next; |
|
1347 |
-} |
|
1348 |
- |
|
1349 |
-AVCodecParser dca_parser = { |
|
1350 |
- {CODEC_ID_DTS}, |
|
1351 |
- sizeof(DCAParseContext), |
|
1352 |
- dca_parse_init, |
|
1353 |
- dca_parse, |
|
1354 |
- ff_parse_close, |
|
1355 |
-}; |
|
1356 |
-#endif /* CONFIG_DCA_PARSER */ |
1357 | 1258 |
new file mode 100644 |
... | ... |
@@ -0,0 +1,29 @@ |
0 |
+/* |
|
1 |
+ * DCA compatible decoder |
|
2 |
+ * Copyright (C) 2004 Gildas Bazin |
|
3 |
+ * Copyright (C) 2004 Benjamin Zores |
|
4 |
+ * Copyright (C) 2006 Benjamin Larsson |
|
5 |
+ * Copyright (C) 2007 Konstantin Shishkov |
|
6 |
+ * |
|
7 |
+ * This file is part of FFmpeg. |
|
8 |
+ * |
|
9 |
+ * FFmpeg is free software; you can redistribute it and/or |
|
10 |
+ * modify it under the terms of the GNU Lesser General Public |
|
11 |
+ * License as published by the Free Software Foundation; either |
|
12 |
+ * version 2.1 of the License, or (at your option) any later version. |
|
13 |
+ * |
|
14 |
+ * FFmpeg is distributed in the hope that it will be useful, |
|
15 |
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of |
|
16 |
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
|
17 |
+ * Lesser General Public License for more details. |
|
18 |
+ * |
|
19 |
+ * You should have received a copy of the GNU Lesser General Public |
|
20 |
+ * License along with FFmpeg; if not, write to the Free Software |
|
21 |
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
|
22 |
+ */ |
|
23 |
+ |
|
24 |
+/** DCA syncwords, also used for bitstream type detection */ |
|
25 |
+#define DCA_MARKER_RAW_BE 0x7FFE8001 |
|
26 |
+#define DCA_MARKER_RAW_LE 0xFE7F0180 |
|
27 |
+#define DCA_MARKER_14B_BE 0x1FFFE800 |
|
28 |
+#define DCA_MARKER_14B_LE 0xFF1F00E8 |
0 | 29 |
new file mode 100644 |
... | ... |
@@ -0,0 +1,127 @@ |
0 |
+/* |
|
1 |
+ * DCA parser |
|
2 |
+ * Copyright (C) 2004 Gildas Bazin |
|
3 |
+ * Copyright (C) 2004 Benjamin Zores |
|
4 |
+ * Copyright (C) 2006 Benjamin Larsson |
|
5 |
+ * Copyright (C) 2007 Konstantin Shishkov |
|
6 |
+ * |
|
7 |
+ * This file is part of FFmpeg. |
|
8 |
+ * |
|
9 |
+ * FFmpeg is free software; you can redistribute it and/or |
|
10 |
+ * modify it under the terms of the GNU Lesser General Public |
|
11 |
+ * License as published by the Free Software Foundation; either |
|
12 |
+ * version 2.1 of the License, or (at your option) any later version. |
|
13 |
+ * |
|
14 |
+ * FFmpeg is distributed in the hope that it will be useful, |
|
15 |
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of |
|
16 |
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
|
17 |
+ * Lesser General Public License for more details. |
|
18 |
+ * |
|
19 |
+ * You should have received a copy of the GNU Lesser General Public |
|
20 |
+ * License along with FFmpeg; if not, write to the Free Software |
|
21 |
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
|
22 |
+ */ |
|
23 |
+ |
|
24 |
+/** |
|
25 |
+ * @file dca_parser.c |
|
26 |
+ */ |
|
27 |
+ |
|
28 |
+#include "avcodec.h" |
|
29 |
+#include "parser.h" |
|
30 |
+#include "dca.h" |
|
31 |
+ |
|
32 |
+typedef struct DCAParseContext { |
|
33 |
+ ParseContext pc; |
|
34 |
+ uint32_t lastmarker; |
|
35 |
+} DCAParseContext; |
|
36 |
+ |
|
37 |
+#define IS_MARKER(state, i, buf, buf_size) \ |
|
38 |
+ ((state == DCA_MARKER_14B_LE && (i < buf_size-2) && (buf[i+1] & 0xF0) == 0xF0 && buf[i+2] == 0x07) \ |
|
39 |
+ || (state == DCA_MARKER_14B_BE && (i < buf_size-2) && buf[i+1] == 0x07 && (buf[i+2] & 0xF0) == 0xF0) \ |
|
40 |
+ || state == DCA_MARKER_RAW_LE || state == DCA_MARKER_RAW_BE) |
|
41 |
+ |
|
42 |
+/** |
|
43 |
+ * finds the end of the current frame in the bitstream. |
|
44 |
+ * @return the position of the first byte of the next frame, or -1 |
|
45 |
+ */ |
|
46 |
+static int dca_find_frame_end(DCAParseContext * pc1, const uint8_t * buf, |
|
47 |
+ int buf_size) |
|
48 |
+{ |
|
49 |
+ int start_found, i; |
|
50 |
+ uint32_t state; |
|
51 |
+ ParseContext *pc = &pc1->pc; |
|
52 |
+ |
|
53 |
+ start_found = pc->frame_start_found; |
|
54 |
+ state = pc->state; |
|
55 |
+ |
|
56 |
+ i = 0; |
|
57 |
+ if (!start_found) { |
|
58 |
+ for (i = 0; i < buf_size; i++) { |
|
59 |
+ state = (state << 8) | buf[i]; |
|
60 |
+ if (IS_MARKER(state, i, buf, buf_size)) { |
|
61 |
+ if (pc1->lastmarker && state == pc1->lastmarker) { |
|
62 |
+ start_found = 1; |
|
63 |
+ break; |
|
64 |
+ } else if (!pc1->lastmarker) { |
|
65 |
+ start_found = 1; |
|
66 |
+ pc1->lastmarker = state; |
|
67 |
+ break; |
|
68 |
+ } |
|
69 |
+ } |
|
70 |
+ } |
|
71 |
+ } |
|
72 |
+ if (start_found) { |
|
73 |
+ for (; i < buf_size; i++) { |
|
74 |
+ state = (state << 8) | buf[i]; |
|
75 |
+ if (state == pc1->lastmarker && IS_MARKER(state, i, buf, buf_size)) { |
|
76 |
+ pc->frame_start_found = 0; |
|
77 |
+ pc->state = -1; |
|
78 |
+ return i - 3; |
|
79 |
+ } |
|
80 |
+ } |
|
81 |
+ } |
|
82 |
+ pc->frame_start_found = start_found; |
|
83 |
+ pc->state = state; |
|
84 |
+ return END_NOT_FOUND; |
|
85 |
+} |
|
86 |
+ |
|
87 |
+static int dca_parse_init(AVCodecParserContext * s) |
|
88 |
+{ |
|
89 |
+ DCAParseContext *pc1 = s->priv_data; |
|
90 |
+ |
|
91 |
+ pc1->lastmarker = 0; |
|
92 |
+ return 0; |
|
93 |
+} |
|
94 |
+ |
|
95 |
+static int dca_parse(AVCodecParserContext * s, |
|
96 |
+ AVCodecContext * avctx, |
|
97 |
+ uint8_t ** poutbuf, int *poutbuf_size, |
|
98 |
+ const uint8_t * buf, int buf_size) |
|
99 |
+{ |
|
100 |
+ DCAParseContext *pc1 = s->priv_data; |
|
101 |
+ ParseContext *pc = &pc1->pc; |
|
102 |
+ int next; |
|
103 |
+ |
|
104 |
+ if (s->flags & PARSER_FLAG_COMPLETE_FRAMES) { |
|
105 |
+ next = buf_size; |
|
106 |
+ } else { |
|
107 |
+ next = dca_find_frame_end(pc1, buf, buf_size); |
|
108 |
+ |
|
109 |
+ if (ff_combine_frame(pc, next, (uint8_t **) & buf, &buf_size) < 0) { |
|
110 |
+ *poutbuf = NULL; |
|
111 |
+ *poutbuf_size = 0; |
|
112 |
+ return buf_size; |
|
113 |
+ } |
|
114 |
+ } |
|
115 |
+ *poutbuf = (uint8_t *) buf; |
|
116 |
+ *poutbuf_size = buf_size; |
|
117 |
+ return next; |
|
118 |
+} |
|
119 |
+ |
|
120 |
+AVCodecParser dca_parser = { |
|
121 |
+ {CODEC_ID_DTS}, |
|
122 |
+ sizeof(DCAParseContext), |
|
123 |
+ dca_parse_init, |
|
124 |
+ dca_parse, |
|
125 |
+ ff_parse_close, |
|
126 |
+}; |