Chiebot-Mirror
/
FFmpeg
mirror of https://github.com/FFmpeg/FFmpeg.git
8
0
Fork 0
Code Issues Projects Releases Wiki Activity

avcodec/dca_parser: simplify state machine

Browse Source 
Signed-off-by: James Almer <jamrial@gmail.com>
pull/216/head
foo86 9 years ago committed by James Almer
parent 054a2c9fdf
commit 1f7b67a1ca
1 changed files with 15 additions and 19 deletions
Whitespace
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
Split View
Diff Options
Show Stats Download Patch File Download Diff File
  1. 34
      libavcodec/dca_parser.c

34
libavcodec/dca_parser.c
Unescape View File

@ -109,25 +109,25 @@ static int dca_find_frame_end(DCAParseContext *pc1, const uint8_t *buf,
case DCA_SYNCWORD_CORE_LE:
if (size == 2) {
pc1->framesize = CORE_FRAMESIZE(STATE_LE(state));
start_found = 2;
start_found = 4;
}
break;
case DCA_SYNCWORD_CORE_14B_BE:
if (size == 4) {
pc1->framesize = CORE_FRAMESIZE(STATE_14(state)) * 8 / 14 * 2;
start_found = 2;
start_found = 4;
}
break;
case DCA_SYNCWORD_CORE_14B_LE:
if (size == 4) {
pc1->framesize = CORE_FRAMESIZE(STATE_14(STATE_LE(state))) * 8 / 14 * 2;
start_found = 2;
start_found = 4;
}
break;
case DCA_SYNCWORD_SUBSTREAM:
if (size == 6) {
pc1->framesize = EXSS_FRAMESIZE(state);
start_found = 2;
start_found = 4;
}
break;
default:
@ -136,23 +136,19 @@ static int dca_find_frame_end(DCAParseContext *pc1, const uint8_t *buf,
continue;
}
if (pc1->lastmarker == DCA_SYNCWORD_CORE_BE) {
if (pc1->framesize > size + 2)
continue;
if (start_found == 2 && IS_EXSS_MARKER(state)) {
pc1->framesize = size + 2;
start_found = 3;
continue;
}
if (start_found == 2 && IS_EXSS_MARKER(state) &&
pc1->framesize <= size + 2) {
pc1->framesize = size + 2;
start_found = 3;
continue;
}
if (start_found == 3) {
if (size == pc1->framesize + 4) {
pc1->framesize += EXSS_FRAMESIZE(state);
start_found = 4;
}
continue;
if (start_found == 3) {
if (size == pc1->framesize + 4) {
pc1->framesize += EXSS_FRAMESIZE(state);
start_found = 4;
}
continue;
}
if (pc1->framesize > size)

Write Preview
Loading…
Cancel
Save