[FFmpeg-cvslog] tak: decode directly to the user-provided AVFrame

[Justin Ruggles]

ffmpeg | branch: master | Justin Ruggles <justin.ruggles at gmail.com> | Sun Dec 23 20:02:46 2012 -0500| [4a2b26fc1b1ad123eba473a20e270f2b0ba92bca] | committer: Justin Ruggles

tak: decode directly to the user-provided AVFrame

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=4a2b26fc1b1ad123eba473a20e270f2b0ba92bca
---

 libavcodec/takdec.c |   19 ++++++++-----------
 1 file changed, 8 insertions(+), 11 deletions(-)

diff --git a/libavcodec/takdec.c b/libavcodec/takdec.c
index 1a2cc3b..48a424e 100644
--- a/libavcodec/takdec.c
+++ b/libavcodec/takdec.c
@@ -45,7 +45,6 @@ typedef struct MCDParam {
 
 typedef struct TAKDecContext {
     AVCodecContext *avctx;                          // parent AVCodecContext
-    AVFrame         frame;                          // AVFrame for decoded output
     DSPContext      dsp;
     TAKStreamInfo   ti;
     GetBitContext   gb;                             // bitstream reader initialized to start at the current frame
@@ -176,8 +175,6 @@ static av_cold int tak_decode_init(AVCodecContext *avctx)
     ff_dsputil_init(&s->dsp, avctx);
 
     s->avctx = avctx;
-    avcodec_get_frame_defaults(&s->frame);
-    avctx->coded_frame = &s->frame;
 
     set_sample_rate_params(avctx);
 
@@ -675,6 +672,7 @@ static int tak_decode_frame(AVCodecContext *avctx, void *data,
                             int *got_frame_ptr, AVPacket *pkt)
 {
     TAKDecContext *s  = avctx->priv_data;
+    AVFrame *frame    = data;
     GetBitContext *gb = &s->gb;
     int chan, i, ret, hsize;
 
@@ -741,8 +739,8 @@ static int tak_decode_frame(AVCodecContext *avctx, void *data,
     s->nb_samples = s->ti.last_frame_samples ? s->ti.last_frame_samples
                                              : s->ti.frame_samples;
 
-    s->frame.nb_samples = s->nb_samples;
-    if ((ret = ff_get_buffer(avctx, &s->frame)) < 0)
+    frame->nb_samples = s->nb_samples;
+    if ((ret = ff_get_buffer(avctx, frame)) < 0)
         return ret;
 
     if (avctx->bits_per_coded_sample <= 16) {
@@ -759,7 +757,7 @@ static int tak_decode_frame(AVCodecContext *avctx, void *data,
             return ret;
     } else {
         for (chan = 0; chan < avctx->channels; chan++)
-            s->decoded[chan] = (int32_t *)s->frame.extended_data[chan];
+            s->decoded[chan] = (int32_t *)frame->extended_data[chan];
     }
 
     if (s->nb_samples < 16) {
@@ -877,7 +875,7 @@ static int tak_decode_frame(AVCodecContext *avctx, void *data,
     switch (avctx->sample_fmt) {
     case AV_SAMPLE_FMT_U8P:
         for (chan = 0; chan < avctx->channels; chan++) {
-            uint8_t *samples = (uint8_t *)s->frame.extended_data[chan];
+            uint8_t *samples = (uint8_t *)frame->extended_data[chan];
             int32_t *decoded = s->decoded[chan];
             for (i = 0; i < s->nb_samples; i++)
                 samples[i] = decoded[i] + 0x80;
@@ -885,7 +883,7 @@ static int tak_decode_frame(AVCodecContext *avctx, void *data,
         break;
     case AV_SAMPLE_FMT_S16P:
         for (chan = 0; chan < avctx->channels; chan++) {
-            int16_t *samples = (int16_t *)s->frame.extended_data[chan];
+            int16_t *samples = (int16_t *)frame->extended_data[chan];
             int32_t *decoded = s->decoded[chan];
             for (i = 0; i < s->nb_samples; i++)
                 samples[i] = decoded[i];
@@ -893,15 +891,14 @@ static int tak_decode_frame(AVCodecContext *avctx, void *data,
         break;
     case AV_SAMPLE_FMT_S32P:
         for (chan = 0; chan < avctx->channels; chan++) {
-            int32_t *samples = (int32_t *)s->frame.extended_data[chan];
+            int32_t *samples = (int32_t *)frame->extended_data[chan];
             for (i = 0; i < s->nb_samples; i++)
                 samples[i] <<= 8;
         }
         break;
     }
 
-    *got_frame_ptr   = 1;
-    *(AVFrame *)data = s->frame;
+    *got_frame_ptr = 1;
 
     return pkt->size;
 }