Originally committed as revision 8881 to svn://svn.ffmpeg.org/ffmpeg/trunk
| ... | ... |
@@ -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 |
+}; |