Merge commit '142e76f1055de5dde44696e71a5f63f2cb11dedf'

* commit '142e76f1055de5dde44696e71a5f63f2cb11dedf':
  swscale: fix crash with dithering due incorrect offset calculation.
  matroskadec: fix stupid typo (!= -> ==)
  build: remove duplicates from order-only directory prerequisite list
  build: rework rules for things in the tools dir
  configure: fix --cpu=host with gcc 4.6
  ARM: use const macro to define constant data in asm
  bitdepth: simplify FUNC/FUNCC macros
  dsputil: remove ff_emulated_edge_mc macro used in one place
  9/10-bit: simplify clipping macros
  matroskadec: reindent
  matroskadec: defer parsing of cues element until we seek.
  lavc: add support for codec-specific defaults.
  lavc: make avcodec_alloc_context3 officially public.
  lavc: remove a half-working attempt at different defaults for audio/video codecs.
  ac3dec: add a drc_scale private option
  lavf: add avformat_find_stream_info()
  lavc: introduce avcodec_open2() as a replacement for avcodec_open().

Conflicts:
	Makefile
	libavcodec/utils.c
	libavformat/avformat.h
	libswscale/swscale_internal.h

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

Makefile

@@ -18,6 +18,8 @@ PROGS_G     = $(PROGS-yes:%=%_g$(EXESUF))
 OBJS        = $(PROGS-yes:%=%.o) cmdutils.o
 TESTTOOLS   = audiogen videogen rotozoom tiny_psnr base64
 HOSTPROGS  := $(TESTTOOLS:%=tests/%)
+TOOLS       = qt-faststart trasher
+TOOLS-$(CONFIG_ZLIB) += cws2fws
 
 BASENAMES   = ffmpeg ffplay ffprobe ffserver
 ALLPROGS    = $(BASENAMES:%=%$(EXESUF))
@@ -51,6 +53,11 @@ $(PROGS): %$(EXESUF): %_g$(EXESUF)
 	$(CP) $< $@
 	$(STRIP) $@
 
+$(TOOLS): %$(EXESUF): %.o
+	$(LD) $(LDFLAGS) -o $@ $< $(ELIBS)
+
+tools/cws2fws$(EXESUF): ELIBS = -lz
+
 config.h: .config
 .config: $(wildcard $(FFLIBS:%=$(SRC_PATH)/lib%/all*.c))
 	@-tput bold 2>/dev/null
@@ -59,7 +66,7 @@ config.h: .config
 
 SUBDIR_VARS := OBJS FFLIBS CLEANFILES DIRS TESTPROGS EXAMPLES SKIPHEADERS \
                ALTIVEC-OBJS MMX-OBJS NEON-OBJS X86-OBJS YASM-OBJS-FFT YASM-OBJS \
-               HOSTPROGS BUILT_HEADERS TESTOBJS ARCH_HEADERS ARMV6-OBJS
+               HOSTPROGS BUILT_HEADERS TESTOBJS ARCH_HEADERS ARMV6-OBJS TOOLS
 
 define RESET
 $(1) :=
@@ -81,18 +88,6 @@ ffserver_g$(EXESUF): FF_LDFLAGS += $(FFSERVERLDFLAGS)
 %_g$(EXESUF): %.o cmdutils.o $(FF_DEP_LIBS)
 	$(LD) $(FF_LDFLAGS) -o $@ $< cmdutils.o $(FF_EXTRALIBS)
 
-TOOLS     = cws2fws graph2dot lavfi-showfiltfmts pktdumper probetest qt-faststart trasher
-TOOLOBJS := $(TOOLS:%=tools/%.o)
-TOOLS    := $(TOOLS:%=tools/%$(EXESUF))
-
-alltools: $(TOOLS)
-
-tools/%$(EXESUF): tools/%.o
-	$(LD) $(FF_LDFLAGS) -o $@ $< $(FF_EXTRALIBS)
-
-$(TOOLOBJS): %.o: %.c | tools
-	$(CC) $(CPPFLAGS) $(CFLAGS) -c $(CC_O) $<
-
 OBJDIRS += tools
 
 -include $(wildcard tools/*.d)

cmdutils.c

@@ -63,7 +63,7 @@ void init_opts(void)
 {
     int i;
     for (i = 0; i < AVMEDIA_TYPE_NB; i++)
-        avcodec_opts[i] = avcodec_alloc_context2(i);
+        avcodec_opts[i] = avcodec_alloc_context3(NULL);
     avformat_opts = avformat_alloc_context();
 #if CONFIG_SWSCALE
     sws_opts = sws_getContext(16, 16, 0, 16, 16, 0, SWS_BICUBIC, NULL, NULL, NULL);

common.mak

@@ -77,6 +77,9 @@ TESTOBJS  := $(TESTOBJS:%=$(SUBDIR)%) $(TESTPROGS:%=$(SUBDIR)%-test.o)
 TESTPROGS := $(TESTPROGS:%=$(SUBDIR)%-test$(EXESUF))
 HOSTOBJS  := $(HOSTPROGS:%=$(SUBDIR)%.o)
 HOSTPROGS := $(HOSTPROGS:%=$(SUBDIR)%$(HOSTEXESUF))
+TOOLS     += $(TOOLS-yes)
+TOOLOBJS  := $(TOOLS:%=tools/%.o)
+TOOLS     := $(TOOLS:%=tools/%$(EXESUF))
 
 DEP_LIBS := $(foreach NAME,$(FFLIBS),lib$(NAME)/$($(CONFIG_SHARED:yes=S)LIBNAME))
 
@@ -85,15 +88,18 @@ SKIPHEADERS += $(ARCH_HEADERS:%=$(ARCH)/%) $(SKIPHEADERS-)
 SKIPHEADERS := $(SKIPHEADERS:%=$(SUBDIR)%)
 checkheaders: $(filter-out $(SKIPHEADERS:.h=.ho),$(ALLHEADERS:.h=.ho))
 
+alltools: $(TOOLS)
+
 $(HOSTOBJS): %.o: %.c
 	$(HOSTCC) $(HOSTCFLAGS) -c -o $@ $<
 
 $(HOSTPROGS): %$(HOSTEXESUF): %.o
 	$(HOSTCC) $(HOSTLDFLAGS) -o $@ $< $(HOSTLIBS)
 
-$(OBJS):     | $(dir $(OBJS))
-$(HOSTOBJS): | $(dir $(HOSTOBJS))
-$(TESTOBJS): | $(dir $(TESTOBJS))
+$(OBJS):     | $(sort $(dir $(OBJS)))
+$(HOSTOBJS): | $(sort $(dir $(HOSTOBJS)))
+$(TESTOBJS): | $(sort $(dir $(TESTOBJS)))
+$(TOOLOBJS): | tools
 
 OBJDIRS := $(OBJDIRS) $(dir $(OBJS) $(HOSTOBJS) $(TESTOBJS))
 

configure

@@ -2137,7 +2137,7 @@ if test "$cpu" = host; then
         gcc|llvm_gcc)
             check_native(){
                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
-                sed -n "/$1=/{
+                sed -n "/cc1.*$1=/{
                             s/.*$1=\\([^ ]*\\).*/\\1/
                             p
                             q

doc/examples/encoding.c

@@ -56,7 +56,7 @@ static void audio_encode_example(const char *filename)
         exit(1);
     }
 
-    c= avcodec_alloc_context();
+    c = avcodec_alloc_context3(codec);
 
     /* put sample parameters */
     c->bit_rate = 64000;
@@ -127,7 +127,7 @@ static void audio_decode_example(const char *outfilename, const char *filename)
         exit(1);
     }
 
-    c= avcodec_alloc_context();
+    c = avcodec_alloc_context3(codec);
 
     /* open it */
     if (avcodec_open(c, codec) < 0) {
@@ -208,7 +208,7 @@ static void video_encode_example(const char *filename)
         exit(1);
     }
 
-    c= avcodec_alloc_context();
+    c = avcodec_alloc_context3(codec);
     picture= avcodec_alloc_frame();
 
     /* put sample parameters */
@@ -335,7 +335,7 @@ static void video_decode_example(const char *outfilename, const char *filename)
         exit(1);
     }
 
-    c= avcodec_alloc_context();
+    c = avcodec_alloc_context3(codec);
     picture= avcodec_alloc_frame();
 
     if(codec->capabilities&CODEC_CAP_TRUNCATED)

ffprobe.c

@@ -294,7 +294,7 @@ static int open_input_file(AVFormatContext **fmt_ctx_ptr, const char *filename)
         if (!(codec = avcodec_find_decoder(stream->codec->codec_id))) {
             fprintf(stderr, "Unsupported codec with id %d for input stream %d\n",
                     stream->codec->codec_id, stream->index);
-        } else if (avcodec_open(stream->codec, codec) < 0) {
+        } else if (avcodec_open2(stream->codec, codec, NULL) < 0) {
             fprintf(stderr, "Error while opening codec for input stream %d\n",
                     stream->index);
         }

ffserver.c

@@ -2117,7 +2117,7 @@ static void open_parser(AVFormatContext *s, int i)
         codec = avcodec_find_decoder(st->codec->codec_id);
         if (codec && (codec->capabilities & CODEC_CAP_PARSE_ONLY)) {
             st->codec->parse_only = 1;
-            if (avcodec_open(st->codec, codec) < 0)
+            if (avcodec_open2(st->codec, codec, NULL) < 0)
                 st->codec->parse_only = 0;
         }
     }
@@ -3468,7 +3468,7 @@ static AVStream *add_av_stream1(FFStream *stream, AVCodecContext *codec, int cop
     if (!fst)
         return NULL;
     if (copy) {
-        fst->codec= avcodec_alloc_context();
+        fst->codec = avcodec_alloc_context3(NULL);
         memcpy(fst->codec, codec, sizeof(AVCodecContext));
         if (codec->extradata_size) {
             fst->codec->extradata = av_malloc(codec->extradata_size);
@@ -3885,7 +3885,7 @@ static void add_codec(FFStream *stream, AVCodecContext *av)
     st = av_mallocz(sizeof(AVStream));
     if (!st)
         return;
-    st->codec = avcodec_alloc_context();
+    st->codec = avcodec_alloc_context3(NULL);
     stream->streams[stream->nb_streams++] = st;
     memcpy(st->codec, av, sizeof(AVCodecContext));
 }

libavcodec/ac3dec.c

@@ -30,6 +30,7 @@
 #include <string.h>
 
 #include "libavutil/crc.h"
+#include "libavutil/opt.h"
 #include "internal.h"
 #include "aac_ac3_parser.h"
 #include "ac3_parser.h"
@@ -1438,6 +1439,20 @@ static av_cold int ac3_decode_end(AVCodecContext *avctx)
     return 0;
 }
 
+#define OFFSET(x) offsetof(AC3DecodeContext, x)
+#define PAR (AV_OPT_FLAG_DECODING_PARAM | AV_OPT_FLAG_AUDIO_PARAM)
+static const AVOption options[] = {
+    { "drc_scale", "percentage of dynamic range compression to apply", OFFSET(drc_scale), FF_OPT_TYPE_FLOAT, {1.0}, 0.0, 1.0, PAR },
+    { NULL},
+};
+
+static const AVClass ac3_decoder_class = {
+    .class_name = "(E-)AC3 decoder",
+    .item_name  = av_default_item_name,
+    .option     = options,
+    .version    = LIBAVUTIL_VERSION_INT,
+};
+
 AVCodec ff_ac3_decoder = {
     .name = "ac3",
     .type = AVMEDIA_TYPE_AUDIO,
@@ -1450,6 +1465,7 @@ AVCodec ff_ac3_decoder = {
     .sample_fmts = (const enum AVSampleFormat[]) {
         AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_NONE
     },
+    .priv_class = &ac3_decoder_class,
 };
 
 #if CONFIG_EAC3_DECODER
@@ -1465,5 +1481,6 @@ AVCodec ff_eac3_decoder = {
     .sample_fmts = (const enum AVSampleFormat[]) {
         AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_NONE
     },
+    .priv_class = &ac3_decoder_class,
 };
 #endif

libavcodec/ac3dec.h

@@ -66,6 +66,7 @@
 #define AC3_FRAME_BUFFER_SIZE 32768
 
 typedef struct {
+    AVClass        *class;                  ///< class for AVOptions
     AVCodecContext *avctx;                  ///< parent context
     GetBitContext gbc;                      ///< bitstream reader
 
@@ -143,6 +144,7 @@ typedef struct {
 
 ///@name Dynamic range
     float dynamic_range[2];                 ///< dynamic range
+    float drc_scale;                        ///< percentage of dynamic range compression to be applied
 ///@}
 
 ///@name Bandwidth

libavcodec/arm/fft_neon.S

@@ -349,9 +349,7 @@ function ff_fft_permute_neon, export=1
         pop             {r4,pc}
 endfunc
 
-        .section .rodata
-        .align 4
-fft_tab_neon:
+const   fft_tab_neon
         .word fft4_neon
         .word fft8_neon
         .word fft16_neon
@@ -367,8 +365,12 @@ fft_tab_neon:
         .word fft16384_neon
         .word fft32768_neon
         .word fft65536_neon
-ELF     .size fft_tab_neon, . - fft_tab_neon
+endconst
 
-        .align 4
-pmmp:   .float  +1.0, -1.0, -1.0, +1.0
-mppm:   .float  -M_SQRT1_2, M_SQRT1_2, M_SQRT1_2, -M_SQRT1_2
+const   pmmp, align=4
+        .float          +1.0, -1.0, -1.0, +1.0
+endconst
+
+const   mppm, align=4
+        .float          -M_SQRT1_2, M_SQRT1_2, M_SQRT1_2, -M_SQRT1_2
+endconst