Merge remote branch 'qatar/master'

* qatar/master: (23 commits)
  ac3enc: correct the flipped sign in the ac3_fixed encoder
  Eliminate pointless '#if 1' statements without matching '#else'.
  Add AVX FFT implementation.
  Increase alignment of av_malloc() as needed by AVX ASM.
  Update x86inc.asm from x264 to allow AVX emulation using SSE and MMX.
  mjpeg: Detect overreads in mjpeg_decode_scan() and error out.
  documentation: extend documentation for ffmpeg -aspect option
  APIChanges: update commit hashes for recent additions.
  lavc: deprecate FF_*_TYPE macros in favor of AV_PICTURE_TYPE_* enums
  aac: add headers needed for log2f()
  lavc: remove FF_API_MB_Q cruft
  lavc: remove FF_API_RATE_EMU cruft
  lavc: remove FF_API_HURRY_UP cruft
  pad: make the filter parametric
  vsrc_movie: add key_frame and pict_type.
  vsrc_movie: fix leak in request_frame()
  lavfi: add key_frame and pict_type to AVFilterBufferRefVideo.
  vsrc_buffer: add sample_aspect_ratio fields to arguments.
  lavfi: add fieldorder filter
  scale: make the filter parametric
  ...

Conflicts:
	Changelog
	doc/filters.texi
	ffmpeg.c
	libavcodec/ac3dec.h
	libavcodec/dsputil.c
	libavfilter/avfilter.h
	libavfilter/vf_scale.c
	libavfilter/vf_yadif.c
	libavfilter/vsrc_buffer.c

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

Changelog

@@ -10,7 +10,7 @@ version <next>:
 - libxvid aspect pickiness fixed
 - Frame multithreaded decoding
 - Lots of deprecated API cruft removed
-
+- fft and imdct optimizations for AVX (Sandy Bridge) processors
 
 version 0.7_beta1:
 

doc/APIchanges

@@ -13,6 +13,17 @@ libavutil:   2011-04-18
 
 API changes, most recent first:
 
+2011-04-XX - bebe72f - lavu 51.1.0 - avutil.h
+  Add AVPictureType enum and av_get_picture_type_char(), deprecate
+  FF_*_TYPE defines and av_get_pict_type_char() defined in
+  libavcodec/avcodec.h.
+
+2011-04-xx - 10d3940 - lavfi 2.3.0 - avfilter.h
+  Add pict_type and key_frame fields to AVFilterBufferRefVideo.
+
+2011-04-xx - 7a11c82 - lavfi 2.2.0 - vsrc_buffer
+  Add sample_aspect_ratio fields to vsrc_buffer arguments
+
 2011-04-21 - 94f7451 - lavc 53.1.0 - avcodec.h
   Add CODEC_CAP_SLICE_THREADS for codecs supporting sliced threading.
 

ffmpeg.c

@@ -2908,6 +2908,10 @@ static void opt_frame_aspect_ratio(const char *arg)
         ffmpeg_exit(1);
     }
     frame_aspect_ratio = ar;
+
+    x = vfilters ? strlen(vfilters) : 0;
+    vfilters = av_realloc(vfilters, x+100);
+    snprintf(vfilters+x, x+100, "%csetdar=%f\n", x?',':' ', ar);
 }
 
 static int opt_metadata(const char *opt, const char *arg)

ffserver.c

@@ -2185,10 +2185,8 @@ static int open_input_stream(HTTPContext *c, const char *info)
         }
     }
 
-#if 1
     if (c->fmt_in->iformat->read_seek)
         av_seek_frame(c->fmt_in, -1, stream_pos, 0);
-#endif
     /* set the start time (needed for maxtime and RTP packet timing) */
     c->start_time = cur_time;
     c->first_pts = AV_NOPTS_VALUE;

libavcodec/aac.h

@@ -223,9 +223,9 @@ typedef struct {
     float sf[120];                                  ///< scalefactors
     int sf_idx[128];                                ///< scalefactor indices (used by encoder)
     uint8_t zeroes[128];                            ///< band is not coded (used by encoder)
-    DECLARE_ALIGNED(16, float,   coeffs)[1024];     ///< coefficients for IMDCT
-    DECLARE_ALIGNED(16, float,   saved)[1024];      ///< overlap
-    DECLARE_ALIGNED(16, float,   ret)[2048];        ///< PCM output
+    DECLARE_ALIGNED(32, float,   coeffs)[1024];     ///< coefficients for IMDCT
+    DECLARE_ALIGNED(32, float,   saved)[1024];      ///< overlap
+    DECLARE_ALIGNED(32, float,   ret)[2048];        ///< PCM output
     DECLARE_ALIGNED(16, int16_t, ltp_state)[3072];  ///< time signal for LTP
     PredictorState predictor_state[MAX_PREDICTORS];
 } SingleChannelElement;
@@ -272,7 +272,7 @@ typedef struct {
      * @defgroup temporary aligned temporary buffers (We do not want to have these on the stack.)
      * @{
      */
-    DECLARE_ALIGNED(16, float, buf_mdct)[1024];
+    DECLARE_ALIGNED(32, float, buf_mdct)[1024];
     /** @} */
 
     /**
@@ -296,7 +296,7 @@ typedef struct {
     int sf_offset;                                    ///< offset into pow2sf_tab as appropriate for dsp.float_to_int16
     /** @} */
 
-    DECLARE_ALIGNED(16, float, temp)[128];
+    DECLARE_ALIGNED(32, float, temp)[128];
 
     enum OCStatus output_configured;
 } AACContext;

libavcodec/aaccoder.c

@@ -37,6 +37,7 @@
 #include "aac.h"
 #include "aacenc.h"
 #include "aactab.h"
+#include "libavutil/libm.h"
 
 /** bits needed to code codebook run value for long windows */
 static const uint8_t run_value_bits_long[64] = {

libavcodec/aacenc.h

@@ -64,7 +64,7 @@ typedef struct AACEncContext {
     int last_frame;
     float lambda;
     DECLARE_ALIGNED(16, int,   qcoefs)[96];      ///< quantized coefficients
-    DECLARE_ALIGNED(16, float, scoefs)[1024];    ///< scaled coefficients
+    DECLARE_ALIGNED(32, float, scoefs)[1024];    ///< scaled coefficients
 } AACEncContext;
 
 #endif /* AVCODEC_AACENC_H */

libavcodec/aacsbr.c

@@ -32,6 +32,7 @@
 #include "aacsbrdata.h"
 #include "fft.h"
 #include "aacps.h"
+#include "libavutil/libm.h"
 
 #include <stdint.h>
 #include <float.h>

libavcodec/ac3dec.h

@@ -201,13 +201,13 @@ typedef struct {
 ///@}
 
 ///@defgroup arrays aligned arrays
-    DECLARE_ALIGNED(16, int,   fixed_coeffs)[AC3_MAX_CHANNELS][AC3_MAX_COEFS];       ///< fixed-point transform coefficients
-    DECLARE_ALIGNED(16, float, transform_coeffs)[AC3_MAX_CHANNELS][AC3_MAX_COEFS];   ///< transform coefficients
-    DECLARE_ALIGNED(16, float, delay)[AC3_MAX_CHANNELS][AC3_BLOCK_SIZE];             ///< delay - added to the next block
-    DECLARE_ALIGNED(16, float, window)[AC3_BLOCK_SIZE];                              ///< window coefficients
-    DECLARE_ALIGNED(16, float, tmp_output)[AC3_BLOCK_SIZE];                          ///< temporary storage for output before windowing
-    DECLARE_ALIGNED(16, float, output)[AC3_MAX_CHANNELS][AC3_BLOCK_SIZE];            ///< output after imdct transform and windowing
-    DECLARE_ALIGNED(16, uint8_t, input_buffer)[AC3_FRAME_BUFFER_SIZE + FF_INPUT_BUFFER_PADDING_SIZE]; ///< temp buffer to prevent overread
+    DECLARE_ALIGNED(16, int,   fixed_coeffs)[AC3_MAX_CHANNELS][AC3_MAX_COEFS];       ///> fixed-point transform coefficients
+    DECLARE_ALIGNED(32, float, transform_coeffs)[AC3_MAX_CHANNELS][AC3_MAX_COEFS];   ///< transform coefficients
+    DECLARE_ALIGNED(32, float, delay)[AC3_MAX_CHANNELS][AC3_BLOCK_SIZE];             ///< delay - added to the next block
+    DECLARE_ALIGNED(32, float, window)[AC3_BLOCK_SIZE];                              ///< window coefficients
+    DECLARE_ALIGNED(32, float, tmp_output)[AC3_BLOCK_SIZE];                          ///< temporary storage for output before windowing
+    DECLARE_ALIGNED(32, float, output)[AC3_MAX_CHANNELS][AC3_BLOCK_SIZE];            ///< output after imdct transform and windowing
+    DECLARE_ALIGNED(32, uint8_t, input_buffer)[AC3_FRAME_BUFFER_SIZE + FF_INPUT_BUFFER_PADDING_SIZE]; ///< temp buffer to prevent overread
 ///@}
 } AC3DecodeContext;
 

libavcodec/ac3enc.c

@@ -171,7 +171,7 @@ typedef struct AC3EncodeContext {
 
     uint8_t exp_strategy[AC3_MAX_CHANNELS][AC3_MAX_BLOCKS]; ///< exponent strategies
 
-    DECLARE_ALIGNED(16, SampleType, windowed_samples)[AC3_WINDOW_SIZE];
+    DECLARE_ALIGNED(32, SampleType, windowed_samples)[AC3_WINDOW_SIZE];
 } AC3EncodeContext;
 
 typedef struct AC3Mant {