build: Add a new component for H.264 parsing code

This fixes standalone compilation of the SVQ3 decoder, which had
incomplete dependencies related to H.264 parsing.

configure

@@ -1686,6 +1686,7 @@ CONFIG_EXTRA="
     h263dsp
     h264chroma
     h264dsp
+    h264parse
     h264pred
     h264qpel
     hpeldsp
@@ -1964,7 +1965,7 @@ h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpel
 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
 h263i_decoder_select="h263_decoder"
 h263p_encoder_select="h263_encoder"
-h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel videodsp"
+h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
 h264_decoder_suggest="error_resilience"
 hap_decoder_select="snappy texturedsp"
 hap_encoder_deps="libsnappy"
@@ -2052,7 +2053,7 @@ sipr_decoder_select="lsp"
 sp5x_decoder_select="mjpeg_decoder"
 svq1_decoder_select="hpeldsp"
 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
-svq3_decoder_select="golomb h264dsp h264pred hpeldsp tpeldsp videodsp"
+svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
 svq3_decoder_suggest="zlib"
 tak_decoder_select="audiodsp"
 tdsc_decoder_deps="zlib"
@@ -2206,7 +2207,7 @@ nvenc_h264_encoder_deps="nvenc"
 nvenc_hevc_encoder_deps="nvenc"
 
 # parsers
-h264_parser_select="golomb h264dsp"
+h264_parser_select="golomb h264dsp h264parse"
 hevc_parser_select="golomb"
 mpegvideo_parser_select="mpegvideo"
 mpeg4video_parser_select="error_resilience h263dsp mpegvideo qpeldsp"

libavcodec/Makefile

@@ -59,6 +59,7 @@ OBJS-$(CONFIG_GOLOMB)                  += golomb.o
 OBJS-$(CONFIG_H263DSP)                 += h263dsp.o
 OBJS-$(CONFIG_H264CHROMA)              += h264chroma.o
 OBJS-$(CONFIG_H264DSP)                 += h264dsp.o h264idct.o
+OBJS-$(CONFIG_H264PARSE)               += h264_parse.o h2645_parse.o h264_ps.o
 OBJS-$(CONFIG_H264PRED)                += h264pred.o
 OBJS-$(CONFIG_H264QPEL)                += h264qpel.o
 OBJS-$(CONFIG_HPELDSP)                 += hpeldsp.o
@@ -251,10 +252,9 @@ OBJS-$(CONFIG_H263_ENCODER)            += mpeg4videoenc.o mpeg4video.o  \
                                           h263.o ituh263enc.o flvenc.o h263data.o
 OBJS-$(CONFIG_H264_DECODER)            += h264dec.o h264_cabac.o h264_cavlc.o \
                                           h264_direct.o h264_loopfilter.o  \
-                                          h264_mb.o h264_picture.o h264_ps.o \
+                                          h264_mb.o h264_picture.o \
                                           h264_refs.o h264_sei.o \
-                                          h264_slice.o h264data.o h264_parse.o \
-                                          h2645_parse.o
+                                          h264_slice.o h264data.o
 OBJS-$(CONFIG_H264_MMAL_DECODER)       += mmaldec.o
 OBJS-$(CONFIG_H264_NVENC_ENCODER)      += nvenc_h264.o
 OBJS-$(CONFIG_H264_OMX_ENCODER)        += omx.o
@@ -427,7 +427,7 @@ OBJS-$(CONFIG_SUNRAST_ENCODER)         += sunrastenc.o
 OBJS-$(CONFIG_SVQ1_DECODER)            += svq1dec.o svq1.o svq13.o h263data.o
 OBJS-$(CONFIG_SVQ1_ENCODER)            += svq1enc.o svq1.o  h263data.o  \
                                           h263.o ituh263enc.o
-OBJS-$(CONFIG_SVQ3_DECODER)            += svq3.o svq13.o mpegutils.o h264_parse.o h264data.o
+OBJS-$(CONFIG_SVQ3_DECODER)            += svq3.o svq13.o mpegutils.o h264data.o
 OBJS-$(CONFIG_TAK_DECODER)             += takdec.o tak.o
 OBJS-$(CONFIG_TARGA_DECODER)           += targa.o
 OBJS-$(CONFIG_TARGA_ENCODER)           += targaenc.o rle.o
@@ -730,8 +730,7 @@ OBJS-$(CONFIG_FLAC_PARSER)             += flac_parser.o flacdata.o flac.o
 OBJS-$(CONFIG_GSM_PARSER)              += gsm_parser.o
 OBJS-$(CONFIG_H261_PARSER)             += h261_parser.o
 OBJS-$(CONFIG_H263_PARSER)             += h263_parser.o
-OBJS-$(CONFIG_H264_PARSER)             += h264_parser.o h264_parse.o h2645_parse.o \
-                                          h264_ps.o h264_sei.o h264data.o
+OBJS-$(CONFIG_H264_PARSER)             += h264_parser.o h264_sei.o h264data.o
 OBJS-$(CONFIG_HEVC_PARSER)             += hevc_parser.o h2645_parse.o hevc_ps.o hevc_data.o
 OBJS-$(CONFIG_MJPEG_PARSER)            += mjpeg_parser.o
 OBJS-$(CONFIG_MLP_PARSER)              += mlp_parser.o mlp.o