amrnb: decode directly to the user-provided AVFrame

libavcodec/amrnbdec.c

@@ -96,7 +96,6 @@
 #define AMR_AGC_ALPHA      0.9
 
 typedef struct AMRContext {
-    AVFrame                         avframe; ///< AVFrame for decoded samples
     AMRNBFrame                        frame; ///< decoded AMR parameters (lsf coefficients, codebook indexes, etc)
     uint8_t             bad_frame_indicator; ///< bad frame ? 1 : 0
     enum Mode                cur_frame_mode;
@@ -177,9 +176,6 @@ static av_cold int amrnb_decode_init(AVCodecContext *avctx)
     for (i = 0; i < 4; i++)
         p->prediction_error[i] = MIN_ENERGY;
 
-    avcodec_get_frame_defaults(&p->avframe);
-    avctx->coded_frame = &p->avframe;
-
     return 0;
 }
 
@@ -936,6 +932,7 @@ static int amrnb_decode_frame(AVCodecContext *avctx, void *data,
 {
 
     AMRContext *p = avctx->priv_data;        // pointer to private data
+    AVFrame *frame     = data;
     const uint8_t *buf = avpkt->data;
     int buf_size       = avpkt->size;
     float *buf_out;                          // pointer to the output data buffer
@@ -947,12 +944,12 @@ static int amrnb_decode_frame(AVCodecContext *avctx, void *data,
     const float *synth_fixed_vector;         // pointer to the fixed vector that synthesis should use
 
     /* get output buffer */
-    p->avframe.nb_samples = AMR_BLOCK_SIZE;
-    if ((ret = ff_get_buffer(avctx, &p->avframe)) < 0) {
+    frame->nb_samples = AMR_BLOCK_SIZE;
+    if ((ret = ff_get_buffer(avctx, frame)) < 0) {
         av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
         return ret;
     }
-    buf_out = (float *)p->avframe.data[0];
+    buf_out = (float *)frame->data[0];
 
     p->cur_frame_mode = unpack_bitstream(p, buf, buf_size);
     if (p->cur_frame_mode == NO_DATA) {
@@ -1058,8 +1055,7 @@ static int amrnb_decode_frame(AVCodecContext *avctx, void *data,
     ff_weighted_vector_sumf(p->lsf_avg, p->lsf_avg, p->lsf_q[3],
                             0.84, 0.16, LP_FILTER_ORDER);
 
-    *got_frame_ptr   = 1;
-    *(AVFrame *)data = p->avframe;
+    *got_frame_ptr = 1;
 
     /* return the amount of bytes consumed if everything was OK */
     return frame_sizes_nb[p->cur_frame_mode] + 1; // +7 for rounding and +8 for TOC