Remove unused variables

22 files changed, 38 insertions, 82 deletions

diff --git a/libavcodec/a64multienc.c b/libavcodec/a64multienc.c
index 8286d7ee3c..532f2a2824 100644
--- a/libavcodec/a64multienc.c
+++ b/libavcodec/a64multienc.c
@@ -252,7 +252,6 @@ static int a64multi_encode_frame(AVCodecContext *avctx, unsigned char *buf,
     int b_width;
 
     int req_size;
-    int num_frames   = c->mc_lifetime;
 
     int *charmap     = c->mc_charmap;
     uint8_t *colram  = c->mc_colram;
@@ -280,7 +279,6 @@ static int a64multi_encode_frame(AVCodecContext *avctx, unsigned char *buf,
         if (!c->mc_lifetime) return 0;
         /* no more frames in queue, prepare to flush remaining frames */
         if (!c->mc_frame_counter) {
-            num_frames = c->mc_lifetime;
             c->mc_lifetime = 0;
         }
         /* still frames in queue so limit lifetime to remaining frames */
diff --git a/libavcodec/aaccoder.c b/libavcodec/aaccoder.c
index 83d3734089..4d5b98fa63 100644
--- a/libavcodec/aaccoder.c
+++ b/libavcodec/aaccoder.c
@@ -311,7 +311,7 @@ static void encode_window_bands_info(AACEncContext *s, SingleChannelElement *sce
                                      int win, int group_len, const float lambda)
 {
     BandCodingPath path[120][12];
-    int w, swb, cb, start, start2, size;
+    int w, swb, cb, start, size;
     int i, j;
     const int max_sfb  = sce->ics.max_sfb;
     const int run_bits = sce->ics.num_windows == 1 ? 5 : 3;
@@ -329,7 +329,6 @@ static void encode_window_bands_info(AACEncContext *s, SingleChannelElement *sce
         path[0][cb].run      = 0;
     }
     for (swb = 0; swb < max_sfb; swb++) {
-        start2 = start;
         size = sce->ics.swb_sizes[swb];
         if (sce->zeroes[win*16 + swb]) {
             for (cb = 0; cb < 12; cb++) {
@@ -413,7 +412,7 @@ static void codebook_trellis_rate(AACEncContext *s, SingleChannelElement *sce,
                                   int win, int group_len, const float lambda)
 {
     BandCodingPath path[120][12];
-    int w, swb, cb, start, start2, size;
+    int w, swb, cb, start, size;
     int i, j;
     const int max_sfb  = sce->ics.max_sfb;
     const int run_bits = sce->ics.num_windows == 1 ? 5 : 3;
@@ -431,7 +430,6 @@ static void codebook_trellis_rate(AACEncContext *s, SingleChannelElement *sce,
         path[0][cb].run      = 0;
     }
     for (swb = 0; swb < max_sfb; swb++) {
-        start2 = start;
         size = sce->ics.swb_sizes[swb];
         if (sce->zeroes[win*16 + swb]) {
             for (cb = 0; cb < 12; cb++) {
@@ -1006,12 +1004,11 @@ static void search_for_quantizers_fast(AVCodecContext *avctx, AACEncContext *s,
                                        SingleChannelElement *sce,
                                        const float lambda)
 {
-    int start = 0, i, w, w2, g;
+    int i, w, w2, g;
     int minq = 255;
 
     memset(sce->sf_idx, 0, sizeof(sce->sf_idx));
     for (w = 0; w < sce->ics.num_windows; w += sce->ics.group_len[w]) {
-        start = w*128;
         for (g = 0; g < sce->ics.num_swb; g++) {
             for (w2 = 0; w2 < sce->ics.group_len[w]; w2++) {
                 FFPsyBand *band = &s->psy.psy_bands[s->cur_channel*PSY_MAX_BANDS+(w+w2)*16+g];
diff --git a/libavcodec/celp_filters.c b/libavcodec/celp_filters.c
index 32eaff3c75..25a6744b04 100644
--- a/libavcodec/celp_filters.c
+++ b/libavcodec/celp_filters.c
@@ -109,7 +109,7 @@ void ff_celp_lp_synthesis_filterf(float *out, const float *filter_coeffs,
     old_out2 = out[-2];
     old_out3 = out[-1];
     for (n = 0; n <= buffer_length - 4; n+=4) {
-        float tmp0,tmp1,tmp2,tmp3;
+        float tmp0,tmp1,tmp2;
         float val;
 
         out0 = in[0];
@@ -160,7 +160,6 @@ void ff_celp_lp_synthesis_filterf(float *out, const float *filter_coeffs,
         tmp0 = out0;
         tmp1 = out1;
         tmp2 = out2;
-        tmp3 = out3;
 
         out3 -= a * tmp2;
         out2 -= a * tmp1;
diff --git a/libavcodec/dca.c b/libavcodec/dca.c
index dbadebacff..a9b2c9b0c9 100644
--- a/libavcodec/dca.c
+++ b/libavcodec/dca.c
@@ -1535,8 +1535,6 @@ static void dca_exss_parse_header(DCAContext *s)
 {
     int ss_index;
     int blownup;
-    int header_size;
-    int hd_size;
     int num_audiop = 1;
     int num_assets = 1;
     int active_ss_mask[8];
@@ -1549,8 +1547,8 @@ static void dca_exss_parse_header(DCAContext *s)
     ss_index = get_bits(&s->gb, 2);
 
     blownup = get_bits1(&s->gb);
-    header_size = get_bits(&s->gb, 8 + 4 * blownup) + 1;
-    hd_size = get_bits_long(&s->gb, 16 + 4 * blownup) + 1;
+    skip_bits(&s->gb, 8 + 4 * blownup); // header_size
+    skip_bits(&s->gb, 16 + 4 * blownup); // hd_size
 
     s->static_fields = get_bits1(&s->gb);
     if (s->static_fields) {
diff --git a/libavcodec/dirac.c b/libavcodec/dirac.c
index 0256f29a53..09da1cbd56 100644
--- a/libavcodec/dirac.c
+++ b/libavcodec/dirac.c
@@ -245,11 +245,11 @@ static int parse_source_parameters(AVCodecContext *avctx, GetBitContext *gb,
 int ff_dirac_parse_sequence_header(AVCodecContext *avctx, GetBitContext *gb,
                                    dirac_source_params *source)
 {
-    unsigned version_major, version_minor;
+    unsigned version_major;
     unsigned video_format, picture_coding_mode;
 
     version_major  = svq3_get_ue_golomb(gb);
-    version_minor  = svq3_get_ue_golomb(gb);
+    svq3_get_ue_golomb(gb); /* version_minor */
     avctx->profile = svq3_get_ue_golomb(gb);
     avctx->level   = svq3_get_ue_golomb(gb);
     video_format   = svq3_get_ue_golomb(gb);
diff --git a/libavcodec/ituh263dec.c b/libavcodec/ituh263dec.c
index aebfcee027..0bb92da833 100644
--- a/libavcodec/ituh263dec.c
+++ b/libavcodec/ituh263dec.c
@@ -152,7 +152,7 @@ int ff_h263_decode_mba(MpegEncContext *s)
  */
 static int h263_decode_gob_header(MpegEncContext *s)
 {
-    unsigned int val, gfid, gob_number;
+    unsigned int val, gob_number;
     int left;
 
     /* Check for GOB Start Code */
@@ -183,12 +183,12 @@ static int h263_decode_gob_header(MpegEncContext *s)
         s->qscale = get_bits(&s->gb, 5); /* SQUANT */
         if(get_bits1(&s->gb)==0)
             return -1;
-        gfid = get_bits(&s->gb, 2); /* GFID */
+        skip_bits(&s->gb, 2); /* GFID */
     }else{
         gob_number = get_bits(&s->gb, 5); /* GN */
         s->mb_x= 0;
         s->mb_y= s->gob_index* gob_number;
-        gfid = get_bits(&s->gb, 2); /* GFID */
+        skip_bits(&s->gb, 2); /* GFID */
         s->qscale = get_bits(&s->gb, 5); /* GQUANT */
     }
 
diff --git a/libavcodec/mpeg12.c b/libavcodec/mpeg12.c
index 82c2987b90..0e1536f7ab 100644
--- a/libavcodec/mpeg12.c
+++ b/libavcodec/mpeg12.c
@@ -2128,14 +2128,13 @@ static void mpeg_decode_gop(AVCodecContext *avctx,
     Mpeg1Context *s1 = avctx->priv_data;
     MpegEncContext *s = &s1->mpeg_enc_ctx;
 
-    int drop_frame_flag;
     int time_code_hours, time_code_minutes;
     int time_code_seconds, time_code_pictures;
     int broken_link;
 
     init_get_bits(&s->gb, buf, buf_size*8);
 
-    drop_frame_flag = get_bits1(&s->gb);
+    skip_bits1(&s->gb); /* drop_frame_flag */
 
     time_code_hours=get_bits(&s->gb,5);
     time_code_minutes = get_bits(&s->gb,6);
diff --git a/libavcodec/mpeg12enc.c b/libavcodec/mpeg12enc.c
index 8aa31f7581..eb07ecfc5e 100644
--- a/libavcodec/mpeg12enc.c
+++ b/libavcodec/mpeg12enc.c
@@ -761,10 +761,9 @@ void ff_mpeg1_encode_init(MpegEncContext *s)
 
                 if(mv==0) len= ff_mpeg12_mbMotionVectorTable[0][1];
                 else{
-                    int val, bit_size, range, code;
+                    int val, bit_size, code;
 
                     bit_size = f_code - 1;
-                    range = 1 << bit_size;
 
                     val=mv;
                     if (val < 0)
diff --git a/libavcodec/mpeg4videodec.c b/libavcodec/mpeg4videodec.c
index 81f09c5a4b..22d7ace789 100644
--- a/libavcodec/mpeg4videodec.c
+++ b/libavcodec/mpeg4videodec.c
@@ -397,14 +397,13 @@ int mpeg4_decode_video_packet_header(MpegEncContext *s)
         header_extension= get_bits1(&s->gb);
     }
     if(header_extension){
-        int time_increment;
         int time_incr=0;
 
         while (get_bits1(&s->gb) != 0)
             time_incr++;
 
         check_marker(&s->gb, "before time_increment in video packed header");
-        time_increment= get_bits(&s->gb, s->time_increment_bits);
+        skip_bits(&s->gb, s->time_increment_bits); /* time_increment */
         check_marker(&s->gb, "before vop_coding_type in video packed header");
 
         skip_bits(&s->gb, 2); /* vop coding type */
@@ -1801,16 +1800,14 @@ no_cplx_est:
 
         if (s->scalability) {
             GetBitContext bak= *gb;
-            int ref_layer_id;
-            int ref_layer_sampling_dir;
             int h_sampling_factor_n;
             int h_sampling_factor_m;
             int v_sampling_factor_n;
             int v_sampling_factor_m;
 
             s->hierachy_type= get_bits1(gb);
-            ref_layer_id= get_bits(gb, 4);
-            ref_layer_sampling_dir= get_bits1(gb);
+            skip_bits(gb, 4);  /* ref_layer_id */
+            skip_bits1(gb);    /* ref_layer_sampling_dir */
             h_sampling_factor_n= get_bits(gb, 5);
             h_sampling_factor_m= get_bits(gb, 5);
             v_sampling_factor_n= get_bits(gb, 5);
@@ -1989,15 +1986,13 @@ static int decode_vop_header(MpegEncContext *s, GetBitContext *gb){
 
      if (s->shape != RECT_SHAPE) {
          if (s->vol_sprite_usage != 1 || s->pict_type != AV_PICTURE_TYPE_I) {
-             int width, height, hor_spat_ref, ver_spat_ref;
-
-             width = get_bits(gb, 13);
+             skip_bits(gb, 13); /* width */
              skip_bits1(gb);   /* marker */
-             height = get_bits(gb, 13);
+             skip_bits(gb, 13); /* height */
              skip_bits1(gb);   /* marker */
-             hor_spat_ref = get_bits(gb, 13); /* hor_spat_ref */
+             skip_bits(gb, 13); /* hor_spat_ref */
              skip_bits1(gb);   /* marker */
-             ver_spat_ref = get_bits(gb, 13); /* ver_spat_ref */
+             skip_bits(gb, 13); /* ver_spat_ref */
          }
          skip_bits1(gb); /* change_CR_disable */
 
diff --git a/libavcodec/mpegvideo_parser.c b/libavcodec/mpegvideo_parser.c
index 42c85874f6..9688e18625 100644
--- a/libavcodec/mpegvideo_parser.c
+++ b/libavcodec/mpegvideo_parser.c
@@ -32,7 +32,7 @@ static void mpegvideo_extract_headers(AVCodecParserContext *s,
     uint32_t start_code;
     int frame_rate_index, ext_type, bytes_left;
     int frame_rate_ext_n, frame_rate_ext_d;
-    int picture_structure, top_field_first, repeat_first_field, progressive_frame;
+    int top_field_first, repeat_first_field, progressive_frame;
     int horiz_size_ext, vert_size_ext, bit_rate_ext;
     int did_set_size=0;
 //FIXME replace the crap with get_bits()
@@ -91,7 +91,6 @@ static void mpegvideo_extract_headers(AVCodecParserContext *s,
                     break;
                 case 0x8: /* picture coding extension */
                     if (bytes_left >= 5) {
-                        picture_structure = buf[2]&3;
                         top_field_first = buf[3] & (1 << 7);
                         repeat_first_field = buf[3] & (1 << 1);
                         progressive_frame = buf[4] & (1 << 7);
diff --git a/libavcodec/msmpeg4.c b/libavcodec/msmpeg4.c
index c575a2f206..c740cfa0bd 100644
--- a/libavcodec/msmpeg4.c
+++ b/libavcodec/msmpeg4.c
@@ -1528,9 +1528,7 @@ int msmpeg4_decode_ext_header(MpegEncContext * s, int buf_size)
     /* the alt_bitstream reader could read over the end so we need to check it */
     if(left>=length && left<length+8)
     {
-        int fps;
-
-        fps= get_bits(&s->gb, 5);
+        skip_bits(&s->gb, 5); /* fps */
         s->bit_rate= get_bits(&s->gb, 11)*1024;
         if(s->msmpeg4_version>=3)
             s->flipflop_rounding= get_bits1(&s->gb);
diff --git a/libavcodec/pngdec.c b/libavcodec/pngdec.c
index 39dbfdcc6f..7477f6746b 100644
--- a/libavcodec/pngdec.c
+++ b/libavcodec/pngdec.c
@@ -397,7 +397,7 @@ static int decode_frame(AVCodecContext *avctx,
     AVFrame *p;
     uint8_t *crow_buf_base = NULL;
     uint32_t tag, length;
-    int ret, crc;
+    int ret;
 
     FFSWAP(AVFrame *, s->current_picture, s->last_picture);
     avctx->coded_frame= s->current_picture;
@@ -451,7 +451,7 @@ static int decode_frame(AVCodecContext *avctx,
             s->compression_type = *s->bytestream++;
             s->filter_type = *s->bytestream++;
             s->interlace_type = *s->bytestream++;
-            crc = bytestream_get_be32(&s->bytestream);
+            s->bytestream += 4; /* crc */
             s->state |= PNG_IHDR;
             av_dlog(avctx, "width=%d height=%d depth=%d color_type=%d compression_type=%d filter_type=%d interlace_type=%d\n",
                     s->width, s->height, s->bit_depth, s->color_type,
@@ -547,8 +547,7 @@ static int decode_frame(AVCodecContext *avctx,
             s->state |= PNG_IDAT;
             if (png_decode_idat(s, length) < 0)
                 goto fail;
-            /* skip crc */
-            crc = bytestream_get_be32(&s->bytestream);
+            s->bytestream += 4; /* crc */
             break;
         case MKTAG('P', 'L', 'T', 'E'):
             {
@@ -568,7 +567,7 @@ static int decode_frame(AVCodecContext *avctx,
                     s->palette[i] = (0xff << 24);
                 }
                 s->state |= PNG_PLTE;
-                crc = bytestream_get_be32(&s->bytestream);
+                s->bytestream += 4; /* crc */
             }
             break;
         case MKTAG('t', 'R', 'N', 'S'):
@@ -584,13 +583,13 @@ static int decode_frame(AVCodecContext *avctx,
                     v = *s->bytestream++;
                     s->palette[i] = (s->palette[i] & 0x00ffffff) | (v << 24);
                 }
-                crc = bytestream_get_be32(&s->bytestream);
+                s->bytestream += 4; /* crc */
             }
             break;
         case MKTAG('I', 'E', 'N', 'D'):
             if (!(s->state & PNG_ALLIMAGE))
                 goto fail;
-            crc = bytestream_get_be32(&s->bytestream);
+            s->bytestream += 4; /* crc */
             goto exit_loop;
         default:
             /* skip tag */
diff --git a/libavcodec/rv10.c b/libavcodec/rv10.c
index d85cf37cac..6227dc6f6c 100644
--- a/libavcodec/rv10.c
+++ b/libavcodec/rv10.c
@@ -235,7 +235,7 @@ int rv_decode_dc(MpegEncContext *s, int n)
 /* read RV 1.0 compatible frame header */
 static int rv10_decode_picture_header(MpegEncContext *s)
 {
-    int mb_count, pb_frame, marker, unk, mb_xy;
+    int mb_count, pb_frame, marker, mb_xy;
 
     marker = get_bits1(&s->gb);
 
@@ -282,7 +282,7 @@ static int rv10_decode_picture_header(MpegEncContext *s)
         s->mb_y = 0;
         mb_count = s->mb_width * s->mb_height;
     }
-    unk= get_bits(&s->gb, 3);   /* ignored */
+    skip_bits(&s->gb, 3);   /* ignored */
     s->f_code = 1;
     s->unrestricted_mv = 1;
 
diff --git a/libavcodec/s302m.c b/libavcodec/s302m.c
index fb1fd867d0..9d623efa8f 100644
--- a/libavcodec/s302m.c
+++ b/libavcodec/s302m.c
@@ -29,7 +29,7 @@ static int s302m_parse_frame_header(AVCodecContext *avctx, const uint8_t *buf,
                                     int buf_size)
 {
     uint32_t h;
-    int frame_size, channels, id, bits;
+    int frame_size, channels, bits;
 
     if (buf_size <= AES3_HEADER_LEN) {
         av_log(avctx, AV_LOG_ERROR, "frame is too short\n");
@@ -48,7 +48,6 @@ static int s302m_parse_frame_header(AVCodecContext *avctx, const uint8_t *buf,
     h = AV_RB32(buf);
     frame_size =  (h >> 16) & 0xffff;
     channels   = ((h >> 14) & 0x0003) * 2 +  2;
-    id         =  (h >>  6) & 0x00ff;
     bits       = ((h >>  4) & 0x0003) * 4 + 16;
 
     if (AES3_HEADER_LEN + frame_size != buf_size || bits > 24) {
diff --git a/libavcodec/shorten.c b/libavcodec/shorten.c
index f19f0fe348..86e981f417 100644
--- a/libavcodec/shorten.c
+++ b/libavcodec/shorten.c
@@ -196,7 +196,6 @@ static int decode_wave_header(AVCodecContext *avctx, uint8_t *header, int header
 {
     GetBitContext hb;
     int len;
-    int chunk_size;
     short wave_format;
 
     init_get_bits(&hb, header, header_size*8);
@@ -205,7 +204,7 @@ static int decode_wave_header(AVCodecContext *avctx, uint8_t *header, int header
         return -1;
     }
 
-    chunk_size = get_le32(&hb);
+    skip_bits_long(&hb, 32);    /* chunk_size */
 
     if (get_le32(&hb) != MKTAG('W','A','V','E')) {
         av_log(avctx, AV_LOG_ERROR, "missing WAVE tag\n");
diff --git a/libavcodec/sp5xdec.c b/libavcodec/sp5xdec.c
index 3d01020a6d..6726c18ca9 100644
--- a/libavcodec/sp5xdec.c
+++ b/libavcodec/sp5xdec.c
@@ -38,15 +38,12 @@ static int sp5x_decode_frame(AVCodecContext *avctx,
     int buf_size = avpkt->size;
     AVPacket avpkt_recoded;
     const int qscale = 5;
-    const uint8_t *buf_ptr;
     uint8_t *recoded;
     int i = 0, j = 0;
 
     if (!avctx->width || !avctx->height)
         return -1;
 
-    buf_ptr = buf;
-
     recoded = av_mallocz(buf_size + 1024);
     if (!recoded)
         return -1;
diff --git a/libavcodec/svq1dec.c b/libavcodec/svq1dec.c
index 0ab09298fc..ef3b4be16c 100644
--- a/libavcodec/svq1dec.c
+++ b/libavcodec/svq1dec.c
@@ -554,9 +554,8 @@ static void svq1_parse_string (GetBitContext *bitbuf, uint8_t *out) {
 
 static int svq1_decode_frame_header (GetBitContext *bitbuf,MpegEncContext *s) {
   int frame_size_code;
-  int temporal_reference;
 
-  temporal_reference = get_bits (bitbuf, 8);
+  skip_bits(bitbuf, 8); /* temporal_reference */
 
   /* frame type */
   s->pict_type= get_bits (bitbuf, 2)+1;
diff --git a/libavcodec/targa.c b/libavcodec/targa.c
index 910cc1ba94..6a852a8528 100644
--- a/libavcodec/targa.c
+++ b/libavcodec/targa.c
@@ -108,18 +108,18 @@ static int decode_frame(AVCodecContext *avctx,
     AVFrame * const p= (AVFrame*)&s->picture;
     uint8_t *dst;
     int stride;
-    int idlen, pal, compr, x, y, w, h, bpp, flags;
+    int idlen, compr, y, w, h, bpp, flags;
     int first_clr, colors, csize;
 
     /* parse image header */
     CHECK_BUFFER_SIZE(buf, buf_end, 18, "header");
     idlen = *buf++;
-    pal = *buf++;
+    buf++; /* pal */
     compr = *buf++;
     first_clr = AV_RL16(buf); buf += 2;
     colors = AV_RL16(buf); buf += 2;
     csize = *buf++;
-    x = AV_RL16(buf); buf += 2;
+    buf += 2; /* x */
     y = AV_RL16(buf); buf += 2;
     w = AV_RL16(buf); buf += 2;
     h = AV_RL16(buf); buf += 2;
diff --git a/libavcodec/truemotion2.c b/libavcodec/truemotion2.c
index f9e607c4f7..23abade214 100644
--- a/libavcodec/truemotion2.c
+++ b/libavcodec/truemotion2.c
@@ -201,7 +201,6 @@ static inline int tm2_read_header(TM2Context *ctx, const uint8_t *buf)
 {
     uint32_t magic;
     const uint8_t *obuf;
-    int length;
 
     obuf = buf;
 
@@ -212,19 +211,6 @@ static inline int tm2_read_header(TM2Context *ctx, const uint8_t *buf)
 /*      av_log (ctx->avctx, AV_LOG_ERROR, "TM2 old header: not implemented (yet)\n"); */
         return 40;
     } else if(magic == 0x00000101) { /* new header */
-        int w, h, size, flags, xr, yr;
-
-        length = AV_RL32(buf);
-        buf += 4;
-
-        init_get_bits(&ctx->gb, buf, 32 * 8);
-        size = get_bits_long(&ctx->gb, 31);
-        h = get_bits(&ctx->gb, 15);
-        w = get_bits(&ctx->gb, 15);
-        flags = get_bits_long(&ctx->gb, 31);
-        yr = get_bits(&ctx->gb, 9);
-        xr = get_bits(&ctx->gb, 9);
-
         return 40;
     } else {
         av_log (ctx->avctx, AV_LOG_ERROR, "Not a TM2 header: 0x%08X\n", magic);
diff --git a/libavcodec/tscc.c b/libavcodec/tscc.c
index bd05f02a61..772906aba6 100644
--- a/libavcodec/tscc.c
+++ b/libavcodec/tscc.c
@@ -75,7 +75,6 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *data_size, AVPac
     int buf_size = avpkt->size;
     CamtasiaContext * const c = avctx->priv_data;
     const unsigned char *encoded = buf;
-    unsigned char *outptr;
     int zret; // Zlib return code
     int len = buf_size;
 
@@ -89,8 +88,6 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *data_size, AVPac
         return -1;
     }
 
-    outptr = c->pic.data[0]; // Output image pointer
-
     zret = inflateReset(&(c->zstream));
     if (zret != Z_OK) {
         av_log(avctx, AV_LOG_ERROR, "Inflate reset error: %d\n", zret);
diff --git a/libavcodec/vmdav.c b/libavcodec/vmdav.c
index 710c2028cf..d258252d95 100644
--- a/libavcodec/vmdav.c
+++ b/libavcodec/vmdav.c
@@ -199,7 +199,6 @@ static void vmd_decode(VmdVideoContext *s)
 
     int frame_x, frame_y;
     int frame_width, frame_height;
-    int dp_size;
 
     frame_x = AV_RL16(&s->buf[6]);
     frame_y = AV_RL16(&s->buf[8]);
@@ -247,7 +246,6 @@ static void vmd_decode(VmdVideoContext *s)
         }
 
         dp = &s->frame.data[0][frame_y * s->frame.linesize[0] + frame_x];
-        dp_size = s->frame.linesize[0] * s->avctx->height;
         pp = &s->prev_frame.data[0][frame_y * s->prev_frame.linesize[0] + frame_x];
         switch (meth) {
         case 1:
diff --git a/libavcodec/zmbvenc.c b/libavcodec/zmbvenc.c
index 271ab2dc96..e4f4860ea0 100644
--- a/libavcodec/zmbvenc.c
+++ b/libavcodec/zmbvenc.c
@@ -181,7 +181,7 @@ static int encode_frame(AVCodecContext *avctx, uint8_t *buf, int buf_size, void
         int x, y, bh2, bw2, xored;
         uint8_t *tsrc, *tprev;
         uint8_t *mv;
-        int mx, my, bv;
+        int mx, my;
 
         bw = (avctx->width + ZMBV_BLOCK - 1) / ZMBV_BLOCK;
         bh = (avctx->height + ZMBV_BLOCK - 1) / ZMBV_BLOCK;
@@ -197,7 +197,7 @@ static int encode_frame(AVCodecContext *avctx, uint8_t *buf, int buf_size, void
                 tsrc = src + x;
                 tprev = prev + x;
 
-                bv = zmbv_me(c, tsrc, p->linesize[0], tprev, c->pstride, x, y, &mx, &my, &xored);
+                zmbv_me(c, tsrc, p->linesize[0], tprev, c->pstride, x, y, &mx, &my, &xored);
                 mv[0] = (mx << 1) | !!xored;
                 mv[1] = my << 1;
                 tprev += mx + my * c->pstride;