remove useless #ifdef CONFIG_ZLIB from zmbv decoder

Originally committed as revision 9708 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavcodec/zmbv.c

@@ -29,9 +29,7 @@
 
 #include "avcodec.h"
 
-#ifdef CONFIG_ZLIB
 #include <zlib.h>
-#endif
 
 #define ZMBV_KEYFRAME 1
 #define ZMBV_DELTAPAL 2
@@ -66,9 +64,7 @@ typedef struct ZmbvContext {
     int flags;
     int bw, bh, bx, by;
     int decomp_len;
-#ifdef CONFIG_ZLIB
     z_stream zstream;
-#endif
     int (*decode_intra)(struct ZmbvContext *c);
     int (*decode_xor)(struct ZmbvContext *c);
 } ZmbvContext;
@@ -399,9 +395,7 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *data_size, uint8
 {
     ZmbvContext * const c = avctx->priv_data;
     uint8_t *outptr;
-#ifdef CONFIG_ZLIB
     int zret = Z_OK; // Zlib return code
-#endif
     int len = buf_size;
     int hi_ver, lo_ver;
 
@@ -473,16 +467,13 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *data_size, uint8
             av_log(avctx, AV_LOG_ERROR, "Unsupported (for now) format %i\n", c->fmt);
             return -1;
         }
-#ifdef CONFIG_ZLIB
+
         zret = inflateReset(&c->zstream);
         if (zret != Z_OK) {
             av_log(avctx, AV_LOG_ERROR, "Inflate reset error: %d\n", zret);
             return -1;
         }
-#else
-        av_log(avctx, AV_LOG_ERROR, "BUG! Zlib support not compiled in frame decoder.\n");
-        return -1;
-#endif  /* CONFIG_ZLIB */
+
         c->cur = av_realloc(c->cur, avctx->width * avctx->height * (c->bpp / 8));
         c->prev = av_realloc(c->prev, avctx->width * avctx->height * (c->bpp / 8));
         c->bx = (c->width + c->bw - 1) / c->bw;
@@ -498,7 +489,6 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *data_size, uint8
         memcpy(c->decomp_buf, buf, len);
         c->decomp_size = 1;
     } else { // ZLIB-compressed data
-#ifdef CONFIG_ZLIB
         c->zstream.total_in = c->zstream.total_out = 0;
         c->zstream.next_in = buf;
         c->zstream.avail_in = len;
@@ -506,10 +496,6 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *data_size, uint8
         c->zstream.avail_out = c->decomp_size;
         inflate(&c->zstream, Z_FINISH);
         c->decomp_len = c->zstream.total_out;
-#else
-        av_log(avctx, AV_LOG_ERROR, "BUG! Zlib support not compiled in frame decoder.\n");
-        return -1;
-#endif
     }
     if(c->flags & ZMBV_KEYFRAME) {
         c->pic.key_frame = 1;
@@ -618,13 +604,9 @@ static int decode_init(AVCodecContext *avctx)
     }
     c->bpp = avctx->bits_per_sample;
 
-#ifdef CONFIG_ZLIB
     // Needed if zlib unused or init aborted before inflateInit
     memset(&(c->zstream), 0, sizeof(z_stream));
-#else
-    av_log(avctx, AV_LOG_ERROR, "Zlib support not compiled.\n");
-    return 1;
-#endif
+
     avctx->pix_fmt = PIX_FMT_RGB24;
     c->decomp_size = (avctx->width + 255) * 4 * (avctx->height + 64);
 
@@ -636,7 +618,6 @@ static int decode_init(AVCodecContext *avctx)
         }
     }
 
-#ifdef CONFIG_ZLIB
     c->zstream.zalloc = Z_NULL;
     c->zstream.zfree = Z_NULL;
     c->zstream.opaque = Z_NULL;
@@ -645,7 +626,6 @@ static int decode_init(AVCodecContext *avctx)
         av_log(avctx, AV_LOG_ERROR, "Inflate init error: %d\n", zret);
         return 1;
     }
-#endif
 
     return 0;
 }
@@ -665,9 +645,7 @@ static int decode_end(AVCodecContext *avctx)
 
     if (c->pic.data[0])
         avctx->release_buffer(avctx, &c->pic);
-#ifdef CONFIG_ZLIB
     inflateEnd(&(c->zstream));
-#endif
     av_freep(&c->cur);
     av_freep(&c->prev);