@@ -121,22 +121,3 @@ int ff_rac_terminate(RangeCoder *c, int version)
return c->bytestream - c->bytestream_start;
}
-
-int ff_rac_check_termination(RangeCoder *c, int version)
-{
- if (version == 1) {
- RangeCoder tmp = *c;
- get_rac(c, (uint8_t[]) { 129 });
-
- if (c->bytestream == tmp.bytestream && c->bytestream > c->bytestream_start)
- tmp.low -= *--tmp.bytestream;
- tmp.bytestream_end = tmp.bytestream;
-
- if (get_rac(&tmp, (uint8_t[]) { 129 }))
- return AVERROR_INVALIDDATA;
- } else {
- if (c->bytestream_end != c->bytestream)
- return AVERROR_INVALIDDATA;
- }
- return 0;
-}
@@ -57,15 +57,6 @@ void ff_init_range_decoder(RangeCoder *c, const uint8_t *buf, int buf_size);
*/
int ff_rac_terminate(RangeCoder *c, int version);
-/**
- * Check if at the current position there is a valid looking termination
- * @param version version 0 requires the decoder to know the data size in bytes
- * version 1 needs about 1 bit more space but does not need to
- * carry the size from encoder to decoder
- * @returns negative AVERROR code on error or non negative.
- */
-int ff_rac_check_termination(RangeCoder *c, int version);
-
void ff_build_rac_states(RangeCoder *c, int factor, int max_p);
static inline void renorm_encoder(RangeCoder *c)
@@ -26,6 +26,32 @@
#define SIZE 1240
+/**
+ * Check if at the current position there is a valid looking termination
+ * @param version version 0 requires the decoder to know the data size in bytes
+ * version 1 needs about 1 bit more space but does not need to
+ * carry the size from encoder to decoder
+ * @returns negative AVERROR code on error or non negative.
+ */
+static int rac_check_termination(RangeCoder *c, int version)
+{
+ if (version == 1) {
+ RangeCoder tmp = *c;
+ get_rac(c, (uint8_t[]) { 129 });
+
+ if (c->bytestream == tmp.bytestream && c->bytestream > c->bytestream_start)
+ tmp.low -= *--tmp.bytestream;
+ tmp.bytestream_end = tmp.bytestream;
+
+ if (get_rac(&tmp, (uint8_t[]) { 129 }))
+ return AVERROR_INVALIDDATA;
+ } else {
+ if (c->bytestream_end != c->bytestream)
+ return AVERROR_INVALIDDATA;
+ }
+ return 0;
+}
+
int main(void)
{
RangeCoder c;
@@ -61,7 +87,7 @@ int main(void)
return 1;
}
- if (ff_rac_check_termination(&c, version) < 0) {
+ if (rac_check_termination(&c, version) < 0) {
av_log(NULL, AV_LOG_ERROR, "rac failure at termination pass %d version %d\n", p, version);
return 1;
}
It is only used there. Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com> --- libavcodec/rangecoder.c | 19 ------------------- libavcodec/rangecoder.h | 9 --------- libavcodec/tests/rangecoder.c | 28 +++++++++++++++++++++++++++- 3 files changed, 27 insertions(+), 29 deletions(-)