cmdutils: remove sws_opts usage, simplify code

It has become unused as all code was switched to AVDictionary
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

cmdutils.c

@@ -63,7 +63,6 @@
 
 static int init_report(const char *env);
 
-struct SwsContext *sws_opts;
 AVDictionary *sws_dict;
 AVDictionary *swr_opts;
 AVDictionary *format_opts, *codec_opts, *resample_opts;
@@ -74,20 +73,11 @@ int hide_banner = 0;
 
 void init_opts(void)
 {
-
-    if(CONFIG_SWSCALE)
-        sws_opts = sws_getContext(16, 16, 0, 16, 16, 0, SWS_BICUBIC,
-                              NULL, NULL, NULL);
     av_dict_set(&sws_dict, "flags", "bicubic", 0);
 }
 
 void uninit_opts(void)
 {
-#if CONFIG_SWSCALE
-    sws_freeContext(sws_opts);
-    sws_opts = NULL;
-#endif
-
     av_dict_free(&swr_opts);
     av_dict_free(&sws_dict);
     av_dict_free(&format_opts);
@@ -577,11 +567,6 @@ int opt_default(void *optctx, const char *opt, const char *arg)
             av_log(NULL, AV_LOG_ERROR, "Error setting option %s.\n", opt);
             return ret;
         }
-        ret = av_opt_set(sws_opts, opt, arg, 0);
-        if (ret < 0) {
-            av_log(NULL, AV_LOG_ERROR, "Error setting option %s for sws_opts.\n", opt);
-            return ret;
-        }
 
         av_dict_set(&sws_dict, opt, arg, FLAGS);
 
@@ -658,9 +643,6 @@ static void finish_group(OptionParseContext *octx, int group_idx,
     *g             = octx->cur_group;
     g->arg         = arg;
     g->group_def   = l->group_def;
-#if CONFIG_SWSCALE
-    g->sws_opts    = sws_opts;
-#endif
     g->sws_dict    = sws_dict;
     g->swr_opts    = swr_opts;
     g->codec_opts  = codec_opts;
@@ -670,9 +652,6 @@ static void finish_group(OptionParseContext *octx, int group_idx,
     codec_opts  = NULL;
     format_opts = NULL;
     resample_opts = NULL;
-#if CONFIG_SWSCALE
-    sws_opts    = NULL;
-#endif
     sws_dict    = NULL;
     swr_opts    = NULL;
     init_opts();
@@ -729,9 +708,6 @@ void uninit_parse_context(OptionParseContext *octx)
             av_dict_free(&l->groups[j].codec_opts);
             av_dict_free(&l->groups[j].format_opts);
             av_dict_free(&l->groups[j].resample_opts);
-#if CONFIG_SWSCALE
-            sws_freeContext(l->groups[j].sws_opts);
-#endif
 
             av_dict_free(&l->groups[j].sws_dict);
             av_dict_free(&l->groups[j].swr_opts);

cmdutils.h

@@ -46,7 +46,6 @@ extern const int program_birth_year;
 
 extern AVCodecContext *avcodec_opts[AVMEDIA_TYPE_NB];
 extern AVFormatContext *avformat_opts;
-extern struct SwsContext *sws_opts;
 extern AVDictionary *sws_dict;
 extern AVDictionary *swr_opts;
 extern AVDictionary *format_opts, *codec_opts, *resample_opts;
@@ -278,7 +277,6 @@ typedef struct OptionGroup {
     AVDictionary *codec_opts;
     AVDictionary *format_opts;
     AVDictionary *resample_opts;
-    struct SwsContext *sws_opts;
     AVDictionary *sws_dict;
     AVDictionary *swr_opts;
 } OptionGroup;

ffplay.c

@@ -102,7 +102,7 @@ const int program_birth_year = 2003;
 
 #define CURSOR_HIDE_DELAY 1000000
 
-static int64_t sws_flags = SWS_BICUBIC;
+static unsigned sws_flags = SWS_BICUBIC;
 
 typedef struct MyAVPacketList {
     AVPacket pkt;
@@ -1677,7 +1677,18 @@ static int queue_picture(VideoState *is, AVFrame *src_frame, double pts, double
         av_picture_copy(&pict, (AVPicture *)src_frame,
                         src_frame->format, vp->width, vp->height);
 #else
-        av_opt_get_int(sws_opts, "sws_flags", 0, &sws_flags);
+        {
+            AVDictionaryEntry *e = av_dict_get(sws_dict, "sws_flags", NULL, 0);
+            if (e) {
+                const AVClass *class = sws_get_class();
+                const AVOption    *o = av_opt_find(&class, "sws_flags", NULL, 0,
+                                                   AV_OPT_SEARCH_FAKE_OBJ);
+                int ret = av_opt_eval_flags(&class, o, e->value, &sws_flags);
+                if (ret < 0)
+                    exit(1);
+            }
+        }
+
         is->img_convert_ctx = sws_getCachedContext(is->img_convert_ctx,
             vp->width, vp->height, src_frame->format, vp->width, vp->height,
             AV_PIX_FMT_YUV420P, sws_flags, NULL, NULL, NULL);