Split h264dsp and h264pred in configure.

Many H.264 derivatives, like RV40 and VP8, use the H.264 prediction functions
but not the weight/loopfilter functions.
This should reduce the size of builds with one of these derivatives but without
H.264 decoding itself.

Originally committed as revision 24741 to svn://svn.ffmpeg.org/ffmpeg/trunk

configure

@@ -867,6 +867,7 @@ CONFIG_LIST="
     gpl
     gray
     h264dsp
+    h264pred
     hardcoded_tables
     huffman
     libdc1394
@@ -1200,7 +1201,7 @@ h263_encoder_select="aandct"
 h263_vaapi_hwaccel_select="vaapi h263_decoder"
 h263i_decoder_select="h263_decoder"
 h263p_encoder_select="h263_encoder"
-h264_decoder_select="golomb h264dsp"
+h264_decoder_select="golomb h264dsp h264pred"
 h264_dxva2_hwaccel_deps="dxva2api_h"
 h264_dxva2_hwaccel_select="dxva2 h264_decoder"
 h264_vaapi_hwaccel_select="vaapi"
@@ -1247,8 +1248,8 @@ rv10_decoder_select="h263_decoder"
 rv10_encoder_select="h263_encoder"
 rv20_decoder_select="h263_decoder"
 rv20_encoder_select="h263_encoder"
-rv30_decoder_select="golomb h264dsp"
-rv40_decoder_select="golomb h264dsp"
+rv30_decoder_select="golomb h264pred"
+rv40_decoder_select="golomb h264pred"
 shorten_decoder_select="golomb"
 sipr_decoder_select="lsp"
 snow_decoder_select="dwt"
@@ -1257,7 +1258,7 @@ sonic_decoder_select="golomb"
 sonic_encoder_select="golomb"
 sonic_ls_encoder_select="golomb"
 svq1_encoder_select="aandct"
-svq3_decoder_select="golomb h264dsp"
+svq3_decoder_select="golomb h264dsp h264pred"
 svq3_decoder_suggest="zlib"
 theora_decoder_select="vp3_decoder"
 tiff_decoder_suggest="zlib"
@@ -1275,7 +1276,7 @@ vorbis_encoder_select="mdct"
 vp6_decoder_select="huffman"
 vp6a_decoder_select="vp6_decoder"
 vp6f_decoder_select="vp6_decoder"
-vp8_decoder_select="h264dsp"
+vp8_decoder_select="h264pred"
 wmapro_decoder_select="mdct"
 wmav1_decoder_select="mdct"
 wmav1_encoder_select="mdct"
@@ -1299,7 +1300,7 @@ vaapi_deps="va_va_h"
 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
 
 # parsers
-h264_parser_select="golomb h264dsp"
+h264_parser_select="golomb h264dsp h264pred"
 
 # external libraries
 libdirac_decoder_deps="libdirac !libschroedinger"

libavcodec/Makefile

@@ -32,7 +32,8 @@ OBJS-$(CONFIG_DXVA2)                   += dxva2.o
 FFT-OBJS-$(CONFIG_HARDCODED_TABLES)    += cos_tables.o
 OBJS-$(CONFIG_FFT)                     += avfft.o fft.o $(FFT-OBJS-yes)
 OBJS-$(CONFIG_GOLOMB)                  += golomb.o
-OBJS-$(CONFIG_H264DSP)                 += h264dsp.o h264idct.o h264pred.o
+OBJS-$(CONFIG_H264DSP)                 += h264dsp.o h264idct.o
+OBJS-$(CONFIG_H264PRED)                += h264pred.o
 OBJS-$(CONFIG_HUFFMAN)                 += huffman.o
 OBJS-$(CONFIG_LPC)                     += lpc.o
 OBJS-$(CONFIG_LSP)                     += lsp.o

libavcodec/arm/Makefile

@@ -3,8 +3,8 @@ OBJS-$(CONFIG_DCA_DECODER)             += arm/dcadsp_init_arm.o         \
 OBJS-$(CONFIG_VP5_DECODER)             += arm/vp56dsp_init_arm.o
 OBJS-$(CONFIG_VP6_DECODER)             += arm/vp56dsp_init_arm.o
 
-OBJS-$(CONFIG_H264DSP)                 += arm/h264dsp_init_arm.o        \
-                                          arm/h264pred_init_arm.o       \
+OBJS-$(CONFIG_H264DSP)                 += arm/h264dsp_init_arm.o
+OBJS-$(CONFIG_H264PRED)                += arm/h264pred_init_arm.o
 
 OBJS                                   += arm/dsputil_init_arm.o        \
                                           arm/dsputil_arm.o             \
@@ -36,7 +36,8 @@ NEON-OBJS-$(CONFIG_RDFT)               += arm/rdft_neon.o               \
 
 NEON-OBJS-$(CONFIG_H264DSP)            += arm/h264dsp_neon.o            \
                                           arm/h264idct_neon.o           \
-                                          arm/h264pred_neon.o           \
+
+NEON-OBJS-$(CONFIG_H264PRED)           += arm/h264pred_neon.o           \
 
 NEON-OBJS-$(CONFIG_DCA_DECODER)        += arm/dcadsp_neon.o             \
                                           arm/synth_filter_neon.o       \

libavcodec/x86/Makefile

@@ -9,9 +9,10 @@ YASM-OBJS-$(CONFIG_FFT)                += x86/fft_mmx.o                 \
 YASM-OBJS-$(CONFIG_GPL)                += x86/h264_idct_sse2.o          \
 
 YASM-OBJS-$(CONFIG_H264DSP)            += x86/h264_deblock_sse2.o       \
-                                          x86/h264_intrapred.o          \
                                           x86/h264_weight_sse2.o        \
 
+YASM-OBJS-$(CONFIG_H264PRED)           += x86/h264_intrapred.o
+
 YASM-OBJS-$(CONFIG_VC1_DECODER)        += x86/vc1dsp_yasm.o
 
 MMX-OBJS-$(CONFIG_CAVS_DECODER)        += x86/cavsdsp_mmx.o

libavcodec/x86/h264dsp_mmx.c

@@ -2365,7 +2365,7 @@ void ff_pred4x4_tm_vp8_mmxext      (uint8_t *src, const uint8_t *topright, int s
 void ff_pred4x4_tm_vp8_ssse3       (uint8_t *src, const uint8_t *topright, int stride);
 void ff_pred4x4_vertical_vp8_mmxext(uint8_t *src, const uint8_t *topright, int stride);
 
-#if CONFIG_H264DSP
+#if CONFIG_H264PRED
 void ff_h264_pred_init_x86(H264PredContext *h, int codec_id)
 {
     mm_flags = mm_support();