From e42e5a89d62386b4dae37cd7fb0fd61d449632e6 Mon Sep 17 00:00:00 2001
From: Justin Ruggles <justin.ruggles@gmail.com>
Date: Sun, 23 Dec 2012 17:35:54 -0500
Subject: [PATCH] bmvaudio: decode directly to the user-provided AVFrame

---
 libavcodec/bmv.c | 21 +++++----------------
 1 file changed, 5 insertions(+), 16 deletions(-)

diff --git a/libavcodec/bmv.c b/libavcodec/bmv.c
index a082d3ced7..75c550f3f5 100644
--- a/libavcodec/bmv.c
+++ b/libavcodec/bmv.c
@@ -295,32 +295,23 @@ static av_cold int decode_end(AVCodecContext *avctx)
     return 0;
 }
 
-typedef struct BMVAudioDecContext {
-    AVFrame frame;
-} BMVAudioDecContext;
-
 static const int bmv_aud_mults[16] = {
     16512, 8256, 4128, 2064, 1032, 516, 258, 192, 129, 88, 64, 56, 48, 40, 36, 32
 };
 
 static av_cold int bmv_aud_decode_init(AVCodecContext *avctx)
 {
-    BMVAudioDecContext *c = avctx->priv_data;
-
     avctx->channels       = 2;
     avctx->channel_layout = AV_CH_LAYOUT_STEREO;
     avctx->sample_fmt     = AV_SAMPLE_FMT_S16;
 
-    avcodec_get_frame_defaults(&c->frame);
-    avctx->coded_frame = &c->frame;
-
     return 0;
 }
 
 static int bmv_aud_decode_frame(AVCodecContext *avctx, void *data,
                                 int *got_frame_ptr, AVPacket *avpkt)
 {
-    BMVAudioDecContext *c = avctx->priv_data;
+    AVFrame *frame     = data;
     const uint8_t *buf = avpkt->data;
     int buf_size = avpkt->size;
     int blocks = 0, total_blocks, i;
@@ -336,12 +327,12 @@ static int bmv_aud_decode_frame(AVCodecContext *avctx, void *data,
     }
 
     /* get output buffer */
-    c->frame.nb_samples = total_blocks * 32;
-    if ((ret = ff_get_buffer(avctx, &c->frame)) < 0) {
+    frame->nb_samples = total_blocks * 32;
+    if ((ret = ff_get_buffer(avctx, frame)) < 0) {
         av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
         return ret;
     }
-    output_samples = (int16_t *)c->frame.data[0];
+    output_samples = (int16_t *)frame->data[0];
 
     for (blocks = 0; blocks < total_blocks; blocks++) {
         uint8_t code = *buf++;
@@ -354,8 +345,7 @@ static int bmv_aud_decode_frame(AVCodecContext *avctx, void *data,
         }
     }
 
-    *got_frame_ptr   = 1;
-    *(AVFrame *)data = c->frame;
+    *got_frame_ptr = 1;
 
     return buf_size;
 }
@@ -376,7 +366,6 @@ AVCodec ff_bmv_audio_decoder = {
     .name           = "bmv_audio",
     .type           = AVMEDIA_TYPE_AUDIO,
     .id             = AV_CODEC_ID_BMV_AUDIO,
-    .priv_data_size = sizeof(BMVAudioDecContext),
     .init           = bmv_aud_decode_init,
     .decode         = bmv_aud_decode_frame,
     .capabilities   = CODEC_CAP_DR1,