takdec: frame multi-threading support

Signed-off-by: Paul B Mahol <onemda@gmail.com>

libavcodec/takdec.c

@@ -28,6 +28,7 @@
 #include "libavutil/internal.h"
 #include "libavutil/samplefmt.h"
 #include "tak.h"
+#include "thread.h"
 #include "avcodec.h"
 #include "dsputil.h"
 #include "internal.h"
@@ -673,6 +674,7 @@ static int tak_decode_frame(AVCodecContext *avctx, void *data,
 {
     TAKDecContext *s  = avctx->priv_data;
     AVFrame *frame    = data;
+    ThreadFrame tframe = { .f = data };
     GetBitContext *gb = &s->gb;
     int chan, i, ret, hsize;
 
@@ -736,8 +738,9 @@ static int tak_decode_frame(AVCodecContext *avctx, void *data,
                                              : s->ti.frame_samples;
 
     frame->nb_samples = s->nb_samples;
-    if ((ret = ff_get_buffer(avctx, frame, 0)) < 0)
+    if ((ret = ff_thread_get_buffer(avctx, &tframe, 0)) < 0)
         return ret;
+    ff_thread_finish_setup(avctx);
 
     if (avctx->bits_per_raw_sample <= 16) {
         int buf_size = av_samples_get_buffer_size(NULL, avctx->channels,
@@ -899,6 +902,18 @@ static int tak_decode_frame(AVCodecContext *avctx, void *data,
     return pkt->size;
 }
 
+static int update_thread_context(AVCodecContext *dst,
+                                 const AVCodecContext *src)
+{
+    TAKDecContext *tsrc = src->priv_data;
+    TAKDecContext *tdst = dst->priv_data;
+
+    if (dst == src)
+        return 0;
+    memcpy(&tdst->ti, &tsrc->ti, sizeof(TAKStreamInfo));
+    return 0;
+}
+
 static av_cold int tak_decode_close(AVCodecContext *avctx)
 {
     TAKDecContext *s = avctx->priv_data;
@@ -916,7 +931,8 @@ AVCodec ff_tak_decoder = {
     .init             = tak_decode_init,
     .close            = tak_decode_close,
     .decode           = tak_decode_frame,
-    .capabilities     = CODEC_CAP_DR1,
+    .update_thread_context = update_thread_context,
+    .capabilities     = CODEC_CAP_DR1 | CODEC_CAP_FRAME_THREADS,
     .long_name        = NULL_IF_CONFIG_SMALL("TAK (Tom's lossless Audio Kompressor)"),
     .sample_fmts      = (const enum AVSampleFormat[]) { AV_SAMPLE_FMT_U8P,
                                                         AV_SAMPLE_FMT_S16P,