dshow: Fix MSVC support, remove av_export, which was apparently unneeded anyway.

Also cleanup exported symbols
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

libavdevice/dshow.c

@@ -370,7 +370,7 @@ dshow_cycle_formats(AVFormatContext *avctx, enum dshowDeviceType devtype,
             if (!pformat_set) {
                 enum AVPixelFormat pix_fmt = dshow_pixfmt(bih->biCompression, bih->biBitCount);
                 if (pix_fmt == AV_PIX_FMT_NONE) {
-                    enum AVCodecID codec_id = ff_codec_get_id(ff_codec_bmp_tags, bih->biCompression);
+                    enum AVCodecID codec_id = ff_codec_get_id(avformat_get_riff_video_tags(), bih->biCompression);
                     AVCodec *codec = avcodec_find_decoder(codec_id);
                     if (codec_id == AV_CODEC_ID_NONE || !codec) {
                         av_log(avctx, AV_LOG_INFO, "  unknown compression type 0x%X", (int) bih->biCompression);
@@ -388,7 +388,7 @@ dshow_cycle_formats(AVFormatContext *avctx, enum dshowDeviceType devtype,
                 continue;
             }
             if (ctx->video_codec_id != AV_CODEC_ID_RAWVIDEO) {
-                if (ctx->video_codec_id != ff_codec_get_id(ff_codec_bmp_tags, bih->biCompression))
+                if (ctx->video_codec_id != ff_codec_get_id(avformat_get_riff_video_tags(), bih->biCompression))
                     goto next;
             }
             if (ctx->pixel_format != AV_PIX_FMT_NONE &&
@@ -779,7 +779,7 @@ dshow_add_device(AVFormatContext *avctx,
           codec->color_range = AVCOL_RANGE_MPEG; // just in case it needs this...
         }
         if (codec->pix_fmt == AV_PIX_FMT_NONE) {
-            codec->codec_id = ff_codec_get_id(ff_codec_bmp_tags, bih->biCompression);
+            codec->codec_id = ff_codec_get_id(avformat_get_riff_video_tags(), bih->biCompression);
             if (codec->codec_id == AV_CODEC_ID_NONE) {
                 av_log(avctx, AV_LOG_ERROR, "Unknown compression type. "
                                  "Please report type 0x%X.\n", (int) bih->biCompression);

libavformat/libavformat.v

@@ -32,8 +32,6 @@ LIBAVFORMAT_$MAJOR {
                 ff_timefilter_reset;
                 get_*;
                 put_*;
-                ff_codec_bmp_tags;
-                ff_raw_pix_fmt_tags;
                 ff_codec_get_id;
         local: *;
 };

libavformat/riff.h

@@ -51,7 +51,7 @@ int ff_put_wav_header(AVIOContext *pb, AVCodecContext *enc);
 enum AVCodecID ff_wav_codec_get_id(unsigned int tag, int bps);
 int ff_get_wav_header(AVIOContext *pb, AVCodecContext *codec, int size);
 
-extern av_export const AVCodecTag ff_codec_bmp_tags[];
+extern const AVCodecTag ff_codec_bmp_tags[]; // exposed through avformat_get_riff_video_tags()
 extern const AVCodecTag ff_codec_wav_tags[];
 
 void ff_parse_specific_params(AVCodecContext *stream, int *au_rate, int *au_ssize, int *au_scale);