Eliminate pointless 0/NULL initializers in AVCodec and similar declarations.

libavcodec/dxva2_h264.c

@@ -443,7 +443,6 @@ AVHWAccel ff_h264_dxva2_hwaccel = {
     .type           = AVMEDIA_TYPE_VIDEO,
     .id             = CODEC_ID_H264,
     .pix_fmt        = PIX_FMT_DXVA2_VLD,
-    .capabilities   = 0,
     .start_frame    = start_frame,
     .decode_slice   = decode_slice,
     .end_frame      = end_frame,

libavcodec/dxva2_mpeg2.c

@@ -265,7 +265,6 @@ AVHWAccel ff_mpeg2_dxva2_hwaccel = {
     .type           = AVMEDIA_TYPE_VIDEO,
     .id             = CODEC_ID_MPEG2VIDEO,
     .pix_fmt        = PIX_FMT_DXVA2_VLD,
-    .capabilities   = 0,
     .start_frame    = start_frame,
     .decode_slice   = decode_slice,
     .end_frame      = end_frame,

libavcodec/dxva2_vc1.c

@@ -269,7 +269,6 @@ AVHWAccel ff_wmv3_dxva2_hwaccel = {
     .type           = AVMEDIA_TYPE_VIDEO,
     .id             = CODEC_ID_WMV3,
     .pix_fmt        = PIX_FMT_DXVA2_VLD,
-    .capabilities   = 0,
     .start_frame    = start_frame,
     .decode_slice   = decode_slice,
     .end_frame      = end_frame,
@@ -282,7 +281,6 @@ AVHWAccel ff_vc1_dxva2_hwaccel = {
     .type           = AVMEDIA_TYPE_VIDEO,
     .id             = CODEC_ID_VC1,
     .pix_fmt        = PIX_FMT_DXVA2_VLD,
-    .capabilities   = 0,
     .start_frame    = start_frame,
     .decode_slice   = decode_slice,
     .end_frame      = end_frame,

libavcodec/mjpeg2jpeg_bsf.c

@@ -108,6 +108,5 @@ static int mjpeg2jpeg_filter(AVBitStreamFilterContext *bsfc,
 
 AVBitStreamFilter ff_mjpeg2jpeg_bsf = {
     .name           = "mjpeg2jpeg",
-    .priv_data_size = 0,
     .filter         = mjpeg2jpeg_filter,
 };

libavcodec/s302m.c

@@ -134,7 +134,6 @@ AVCodec ff_s302m_decoder = {
     .name           = "s302m",
     .type           = AVMEDIA_TYPE_AUDIO,
     .id             = CODEC_ID_S302M,
-    .priv_data_size = 0,
     .decode         = s302m_decode_frame,
     .long_name      = NULL_IF_CONFIG_SMALL("SMPTE 302M"),
 };

libavcodec/vaapi_h264.c

@@ -341,9 +341,7 @@ AVHWAccel ff_h264_vaapi_hwaccel = {
     .type           = AVMEDIA_TYPE_VIDEO,
     .id             = CODEC_ID_H264,
     .pix_fmt        = PIX_FMT_VAAPI_VLD,
-    .capabilities   = 0,
     .start_frame    = start_frame,
     .end_frame      = end_frame,
     .decode_slice   = decode_slice,
-    .priv_data_size = 0,
 };

libavcodec/vaapi_mpeg2.c

@@ -143,9 +143,7 @@ AVHWAccel ff_mpeg2_vaapi_hwaccel = {
     .type           = AVMEDIA_TYPE_VIDEO,
     .id             = CODEC_ID_MPEG2VIDEO,
     .pix_fmt        = PIX_FMT_VAAPI_VLD,
-    .capabilities   = 0,
     .start_frame    = vaapi_mpeg2_start_frame,
     .end_frame      = vaapi_mpeg2_end_frame,
     .decode_slice   = vaapi_mpeg2_decode_slice,
-    .priv_data_size = 0,
 };

libavcodec/vaapi_mpeg4.c

@@ -155,11 +155,9 @@ AVHWAccel ff_mpeg4_vaapi_hwaccel = {
     .type           = AVMEDIA_TYPE_VIDEO,
     .id             = CODEC_ID_MPEG4,
     .pix_fmt        = PIX_FMT_VAAPI_VLD,
-    .capabilities   = 0,
     .start_frame    = vaapi_mpeg4_start_frame,
     .end_frame      = vaapi_mpeg4_end_frame,
     .decode_slice   = vaapi_mpeg4_decode_slice,
-    .priv_data_size = 0,
 };
 #endif
 
@@ -169,10 +167,8 @@ AVHWAccel ff_h263_vaapi_hwaccel = {
     .type           = AVMEDIA_TYPE_VIDEO,
     .id             = CODEC_ID_H263,
     .pix_fmt        = PIX_FMT_VAAPI_VLD,
-    .capabilities   = 0,
     .start_frame    = vaapi_mpeg4_start_frame,
     .end_frame      = vaapi_mpeg4_end_frame,
     .decode_slice   = vaapi_mpeg4_decode_slice,
-    .priv_data_size = 0,
 };
 #endif

libavcodec/vaapi_vc1.c

@@ -346,11 +346,9 @@ AVHWAccel ff_wmv3_vaapi_hwaccel = {
     .type           = AVMEDIA_TYPE_VIDEO,
     .id             = CODEC_ID_WMV3,
     .pix_fmt        = PIX_FMT_VAAPI_VLD,
-    .capabilities   = 0,
     .start_frame    = vaapi_vc1_start_frame,
     .end_frame      = vaapi_vc1_end_frame,
     .decode_slice   = vaapi_vc1_decode_slice,
-    .priv_data_size = 0,
 };
 #endif
 
@@ -359,9 +357,7 @@ AVHWAccel ff_vc1_vaapi_hwaccel = {
     .type           = AVMEDIA_TYPE_VIDEO,
     .id             = CODEC_ID_VC1,
     .pix_fmt        = PIX_FMT_VAAPI_VLD,
-    .capabilities   = 0,
     .start_frame    = vaapi_vc1_start_frame,
     .end_frame      = vaapi_vc1_end_frame,
     .decode_slice   = vaapi_vc1_decode_slice,
-    .priv_data_size = 0,
 };

libavcodec/vda_h264.c

@@ -102,7 +102,6 @@ AVHWAccel ff_h264_vda_hwaccel = {
     .type           = AVMEDIA_TYPE_VIDEO,
     .id             = CODEC_ID_H264,
     .pix_fmt        = PIX_FMT_VDA_VLD,
-    .capabilities   = 0,
     .start_frame    = start_frame,
     .decode_slice   = decode_slice,
     .end_frame      = end_frame,

libavformat/a64.c

@@ -166,7 +166,6 @@ static int a64_write_trailer(struct AVFormatContext *s)
 AVOutputFormat ff_a64_muxer = {
     .name = "a64",
     .long_name = NULL_IF_CONFIG_SMALL("a64 - video for Commodore 64"),
-    .mime_type = NULL,
     .extensions = "a64, A64",
     .priv_data_size = sizeof (A64Context),
     .video_codec = CODEC_ID_A64_MULTI,

libavformat/amr.c

@@ -176,7 +176,6 @@ static int amr_read_packet(AVFormatContext *s,
 AVInputFormat ff_amr_demuxer = {
     .name           = "amr",
     .long_name      = NULL_IF_CONFIG_SMALL("3GPP AMR file format"),
-    .priv_data_size = 0, /*priv_data_size*/
     .read_probe     = amr_probe,
     .read_header    = amr_read_header,
     .read_packet    = amr_read_packet,

libavformat/mmsh.c

@@ -366,7 +366,5 @@ URLProtocol ff_mmsh_protocol = {
     .name      = "mmsh",
     .url_open  = mmsh_open,
     .url_read  = mmsh_read,
-    .url_write = NULL,
-    .url_seek  = NULL,
     .url_close = mmsh_close,
 };

libavformat/mpeg.c

@@ -614,7 +614,6 @@ AVInputFormat ff_mpegps_demuxer = {
     .read_probe     = mpegps_probe,
     .read_header    = mpegps_read_header,
     .read_packet    = mpegps_read_packet,
-    .read_seek      = NULL, //mpegps_read_seek,
     .read_timestamp = mpegps_read_dts,
     .flags = AVFMT_SHOW_IDS|AVFMT_TS_DISCONT,
 };

libavformat/rsodec.c

@@ -92,11 +92,8 @@ AVInputFormat ff_rso_demuxer = {
     .name           =   "rso",
     .long_name      =   NULL_IF_CONFIG_SMALL("Lego Mindstorms RSO format"),
     .extensions     =   "rso",
-    .priv_data_size =   0,
-    .read_probe     =   NULL, /* no magic value in this format */
     .read_header    =   rso_read_header,
     .read_packet    =   rso_read_packet,
-    .read_close     =   NULL,
     .read_seek      =   pcm_read_seek,
     .codec_tag      =   (const AVCodecTag* const []){ff_codec_rso_tags, 0},
 };

libavformat/rsoenc.c

@@ -104,7 +104,6 @@ AVOutputFormat ff_rso_muxer = {
     .name           =   "rso",
     .long_name      =   NULL_IF_CONFIG_SMALL("Lego Mindstorms RSO format"),
     .extensions     =   "rso",
-    .priv_data_size =   0,
     .audio_codec    =   CODEC_ID_PCM_U8,
     .video_codec    =   CODEC_ID_NONE,
     .write_header   =   rso_write_header,

libavformat/rtpdec_mpeg4.c

@@ -234,9 +234,6 @@ RTPDynamicProtocolHandler ff_mp4v_es_dynamic_handler = {
     .codec_type         = AVMEDIA_TYPE_VIDEO,
     .codec_id           = CODEC_ID_MPEG4,
     .parse_sdp_a_line   = parse_sdp_line,
-    .alloc              = NULL,
-    .free               = NULL,
-    .parse_packet       = NULL
 };
 
 RTPDynamicProtocolHandler ff_mpeg4_generic_dynamic_handler = {

libavformat/tls.c

@@ -246,7 +246,6 @@ URLProtocol ff_tls_protocol = {
     .url_open       = tls_open,
     .url_read       = tls_read,
     .url_write      = tls_write,
-    .url_seek       = NULL,
     .url_close      = tls_close,
     .priv_data_size = sizeof(TLSContext),
 };