Fix various unused variable warnings

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

12 files changed, 11 insertions, 21 deletions

diff --git a/libavcodec/a64multienc.c b/libavcodec/a64multienc.c
index e9b3471925..5a665d0592 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/celp_filters.c b/libavcodec/celp_filters.c
index 26a62eed14..8b68c2ffef 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 74bae4e295..074f998995 100644
--- a/libavcodec/dca.c
+++ b/libavcodec/dca.c
@@ -1535,8 +1535,8 @@ static void dca_exss_parse_header(DCAContext *s)
 {
     int ss_index;
     int blownup;
-    int header_size;
-    int hd_size;
+    int header_size av_unused;
+    int hd_size av_unused;
     int num_audiop = 1;
     int num_assets = 1;
     int active_ss_mask[8];
@@ -1622,7 +1622,6 @@ static int dca_decode_frame(AVCodecContext * avctx,
 {
     const uint8_t *buf = avpkt->data;
     int buf_size = avpkt->size;
-    int data_size_tmp;
 
     int lfe_samples;
     int num_core_channels = 0;
diff --git a/libavcodec/dirac.c b/libavcodec/dirac.c
index c8dc7a0f62..f39e9996d6 100644
--- a/libavcodec/dirac.c
+++ b/libavcodec/dirac.c
@@ -245,7 +245,7 @@ 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, version_minor av_unused;
     unsigned video_format, picture_coding_mode;
 
     version_major  = svq3_get_ue_golomb(gb);
diff --git a/libavcodec/rv10.c b/libavcodec/rv10.c
index cbecfa8a87..2ce7ea00b6 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, unk av_unused, mb_xy;
 
     marker = get_bits1(&s->gb);
 
diff --git a/libavcodec/s302m.c b/libavcodec/s302m.c
index d8b2b38a02..d707208b6c 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, id av_unused, bits;
 
     if (buf_size <= AES3_HEADER_LEN) {
         av_log(avctx, AV_LOG_ERROR, "frame is too short\n");
diff --git a/libavcodec/shorten.c b/libavcodec/shorten.c
index f50da4e87f..b2a05cc259 100644
--- a/libavcodec/shorten.c
+++ b/libavcodec/shorten.c
@@ -196,7 +196,7 @@ static int decode_wave_header(AVCodecContext *avctx, uint8_t *header, int header
 {
     GetBitContext hb;
     int len;
-    int chunk_size;
+    int chunk_size av_unused;
     short wave_format;
 
     init_get_bits(&hb, header, header_size*8);
diff --git a/libavcodec/sp5xdec.c b/libavcodec/sp5xdec.c
index 1af978f21b..0b56c101db 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/truemotion2.c b/libavcodec/truemotion2.c
index 122049c957..f09a5edd99 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;
 
@@ -212,7 +211,7 @@ 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;
+        av_unused int w, h, size, flags, xr, yr, length;
 
         length = AV_RL32(buf);
         buf += 4;
diff --git a/libavcodec/vaapi_mpeg2.c b/libavcodec/vaapi_mpeg2.c
index 3b3f6e0444..6c92a0ff72 100644
--- a/libavcodec/vaapi_mpeg2.c
+++ b/libavcodec/vaapi_mpeg2.c
@@ -109,7 +109,7 @@ static int vaapi_mpeg2_decode_slice(AVCodecContext *avctx, const uint8_t *buffer
     MpegEncContext * const s = avctx->priv_data;
     VASliceParameterBufferMPEG2 *slice_param;
     GetBitContext gb;
-    uint32_t start_code, quantiser_scale_code, intra_slice_flag, macroblock_offset;
+    uint32_t start_code av_unused, quantiser_scale_code, intra_slice_flag, macroblock_offset;
 
     av_dlog(avctx, "vaapi_mpeg2_decode_slice(): buffer %p, size %d\n", buffer, size);
 
diff --git a/libavcodec/vmdav.c b/libavcodec/vmdav.c
index 8d8bc61e42..934a52b939 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 55aa7b936b..4c98987fea 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;