dixie: fix memory leaks

Implemented the decoder shutdown call to deallocate buffers when the
codec is destroyed.

Change-Id: I6cd62f40f34e0db91fb7eb8cb673f5d9726fe192

vp8/dixie/dixie.c

@@ -525,3 +525,12 @@ vp8_dixie_decode_frame(struct vp8_decoder_ctx *ctx,
 
     return ctx_->error.error_code;
 }
+
+
+void
+vp8_dixie_decode_destroy(struct vp8_decoder_ctx *ctx)
+{
+    vp8_dixie_predict_destroy(ctx);
+    vp8_dixie_tokens_destroy(ctx);
+    vp8_dixie_modemv_destroy(ctx);
+}

vp8/dixie/dixie.h

@@ -315,6 +315,10 @@ void
 vp8_dixie_decode_init(struct vp8_decoder_ctx *ctx);
 
 
+void
+vp8_dixie_decode_destroy(struct vp8_decoder_ctx *ctx);
+
+
 vpx_codec_err_t
 vp8_parse_frame_header(const unsigned char   *data,
                        unsigned int           sz,

vp8/dixie/modemv.c

@@ -666,3 +666,13 @@ vp8_dixie_modemv_init(struct vp8_decoder_ctx *ctx)
 
     ctx->mb_info_rows = ctx->mb_info_rows_storage + 1;
 }
+
+
+void
+vp8_dixie_modemv_destroy(struct vp8_decoder_ctx *ctx)
+{
+    free(ctx->mb_info_storage);
+    ctx->mb_info_storage = NULL;
+    free(ctx->mb_info_rows_storage);
+    ctx->mb_info_rows_storage = NULL;
+}

vp8/dixie/modemv.h

@@ -14,6 +14,10 @@ void
 vp8_dixie_modemv_init(struct vp8_decoder_ctx *ctx);
 
 
+void
+vp8_dixie_modemv_destroy(struct vp8_decoder_ctx *ctx);
+
+
 void
 vp8_dixie_modemv_process_row(struct vp8_decoder_ctx *ctx,
                              struct bool_decoder    *bool,

vp8/dixie/predict.c

@@ -1836,6 +1836,20 @@ vp8_dixie_predict_init(struct vp8_decoder_ctx *ctx)
 }
 
 
+void
+vp8_dixie_predict_destroy(struct vp8_decoder_ctx *ctx)
+{
+    int i;
+
+    for (i = 0; i < NUM_REF_FRAMES; i++)
+    {
+        vpx_img_free(&ctx->frame_strg[i].img);
+        ctx->frame_strg[i].ref_cnt = 0;
+        ctx->ref_frames[i] = NULL;
+    }
+}
+
+
 void
 vp8_dixie_predict_process_row(struct vp8_decoder_ctx *ctx,
                               unsigned int            row,

vp8/dixie/predict.h

@@ -14,6 +14,10 @@ void
 vp8_dixie_predict_init(struct vp8_decoder_ctx *ctx);
 
 
+void
+vp8_dixie_predict_destroy(struct vp8_decoder_ctx *ctx);
+
+
 void
 vp8_dixie_predict_process_row(struct vp8_decoder_ctx *ctx,
                               unsigned int            row,

vp8/dixie/tokens.c

@@ -479,3 +479,15 @@ vp8_dixie_tokens_init(struct vp8_decoder_ctx *ctx)
             vpx_internal_error(&ctx->error, VPX_CODEC_MEM_ERROR, NULL);
     }
 }
+
+
+void
+vp8_dixie_tokens_destroy(struct vp8_decoder_ctx *ctx)
+{
+    int i;
+
+    for (i = 0; i < MAX_PARTITIONS; i++)
+        free(ctx->tokens[i].coeffs);
+
+    free(ctx->above_token_entropy_ctx);
+}

vp8/dixie/tokens.h

@@ -14,6 +14,10 @@ void
 vp8_dixie_tokens_init(struct vp8_decoder_ctx *ctx);
 
 
+void
+vp8_dixie_tokens_destroy(struct vp8_decoder_ctx *ctx);
+
+
 void
 vp8_dixie_tokens_process_row(struct vp8_decoder_ctx *ctx,
                              unsigned int            partition,

vp8/vp8_dixie_iface.c

@@ -82,6 +82,7 @@ static vpx_codec_err_t vp8_init(vpx_codec_ctx_t *ctx)
 
 static vpx_codec_err_t vp8_destroy(vpx_codec_alg_priv_t *ctx)
 {
+    vp8_dixie_decode_destroy(&ctx->decoder_ctx);
     vpx_free(ctx->base.alg_priv);
     return VPX_CODEC_OK;
 }