Merge commit '9221efef7968463f3e3d9ce79ea72eaca082e73f'

* commit '9221efef7968463f3e3d9ce79ea72eaca082e73f':
  lavf: fix av_interleaved_write_frame() doxy.
  lavf: clarify the lifetime of demuxed packets.
  avconv: do not free muxed packet on streamcopy.
  crc: move doxy to the header
  vf_drawtext: do not use deprecated av_tree_node_size
  x86: Refactor PSWAPD fallback implementations and port to cpuflags

Merged-by: Michael Niedermayer <michaelni@gmx.at>

3 files changed, 42 insertions, 28 deletions

diff --git a/libavutil/crc.c b/libavutil/crc.c
index d640184876..bba8cb10a5 100644
--- a/libavutil/crc.c
+++ b/libavutil/crc.c
@@ -40,22 +40,6 @@ static struct {
 static AVCRC av_crc_table[AV_CRC_MAX][257];
 #endif
 
-/**
- * Initialize a CRC table.
- * @param ctx must be an array of size sizeof(AVCRC)*257 or sizeof(AVCRC)*1024
- * @param le If 1, the lowest bit represents the coefficient for the highest
- *           exponent of the corresponding polynomial (both for poly and
- *           actual CRC).
- *           If 0, you must swap the CRC parameter and the result of av_crc
- *           if you need the standard representation (can be simplified in
- *           most cases to e.g. bswap16):
- *           av_bswap32(crc << (32-bits))
- * @param bits number of bits for the CRC
- * @param poly generator polynomial without the x**bits coefficient, in the
- *             representation as specified by le
- * @param ctx_size size of ctx in bytes
- * @return <0 on failure
- */
 int av_crc_init(AVCRC *ctx, int le, int bits, uint32_t poly, int ctx_size)
 {
     unsigned i, j;
@@ -89,11 +73,6 @@ int av_crc_init(AVCRC *ctx, int le, int bits, uint32_t poly, int ctx_size)
     return 0;
 }
 
-/**
- * Get an initialized standard CRC table.
- * @param crc_id ID of a standard CRC
- * @return a pointer to the CRC table or NULL on failure
- */
 const AVCRC *av_crc_get_table(AVCRCId crc_id)
 {
 #if !CONFIG_HARDCODED_TABLES
@@ -108,13 +87,6 @@ const AVCRC *av_crc_get_table(AVCRCId crc_id)
     return av_crc_table[crc_id];
 }
 
-/**
- * Calculate the CRC of a block.
- * @param crc CRC of previous blocks if any or initial value for CRC
- * @return CRC updated with the data from the given block
- *
- * @see av_crc_init() "le" parameter
- */
 uint32_t av_crc(const AVCRC *ctx, uint32_t crc,
                 const uint8_t *buffer, size_t length)
 {
diff --git a/libavutil/crc.h b/libavutil/crc.h
index 12650542ba..9095ce6c62 100644
--- a/libavutil/crc.h
+++ b/libavutil/crc.h
@@ -36,8 +36,38 @@ typedef enum {
     AV_CRC_MAX,         /*< Not part of public API! Do not use outside libavutil. */
 }AVCRCId;
 
+/**
+ * Initialize a CRC table.
+ * @param ctx must be an array of size sizeof(AVCRC)*257 or sizeof(AVCRC)*1024
+ * @param le If 1, the lowest bit represents the coefficient for the highest
+ *           exponent of the corresponding polynomial (both for poly and
+ *           actual CRC).
+ *           If 0, you must swap the CRC parameter and the result of av_crc
+ *           if you need the standard representation (can be simplified in
+ *           most cases to e.g. bswap16):
+ *           av_bswap32(crc << (32-bits))
+ * @param bits number of bits for the CRC
+ * @param poly generator polynomial without the x**bits coefficient, in the
+ *             representation as specified by le
+ * @param ctx_size size of ctx in bytes
+ * @return <0 on failure
+ */
 int av_crc_init(AVCRC *ctx, int le, int bits, uint32_t poly, int ctx_size);
+
+/**
+ * Get an initialized standard CRC table.
+ * @param crc_id ID of a standard CRC
+ * @return a pointer to the CRC table or NULL on failure
+ */
 const AVCRC *av_crc_get_table(AVCRCId crc_id);
+
+/**
+ * Calculate the CRC of a block.
+ * @param crc CRC of previous blocks if any or initial value for CRC
+ * @return CRC updated with the data from the given block
+ *
+ * @see av_crc_init() "le" parameter
+ */
 uint32_t av_crc(const AVCRC *ctx, uint32_t start_crc, const uint8_t *buffer, size_t length) av_pure;
 
 #endif /* AVUTIL_CRC_H */
diff --git a/libavutil/x86/x86util.asm b/libavutil/x86/x86util.asm
index ade21c68bb..df2ceccdce 100644
--- a/libavutil/x86/x86util.asm
+++ b/libavutil/x86/x86util.asm
@@ -319,6 +319,18 @@
     %endif
 %endmacro
 
+%macro PSWAPD 2
+%if cpuflag(mmxext)
+    pshufw    %1, %2, q1032
+%elif cpuflag(3dnowext)
+    pswapd    %1, %2
+%elif cpuflag(3dnow)
+    movq      %1, %2
+    psrlq     %1, 32
+    punpckldq %1, %2
+%endif
+%endmacro
+
 %macro DEINTB 5 ; mask, reg1, mask, reg2, optional src to fill masks from
 %ifnum %5
     pand   m%3, m%5, m%4 ; src .. y6 .. y4