avformat/avio: Add Metacube support

[ffmpeg] / libavcodec / nellymoserenc.c

diff --git a/libavcodec/nellymoserenc.c b/libavcodec/nellymoserenc.c
index e5c9806be83562c19af870dc2fac003cfb6d14dd..2e13e6af089b5a3394c47a341a9bd9500b7972a3 100644 (file)
--- a/libavcodec/nellymoserenc.c
+++ b/libavcodec/nellymoserenc.c
@@ -38,6 +38,7 @@
 #include "libavutil/common.h"
 #include "libavutil/float_dsp.h"
 #include "libavutil/mathematics.h"
+#include "libavutil/thread.h"
 
 #include "audio_frame_queue.h"
 #include "avcodec.h"
@@ -137,20 +138,37 @@ static av_cold int encode_end(AVCodecContext *avctx)
 
     ff_mdct_end(&s->mdct_ctx);
 
-    if (s->avctx->trellis) {
-        av_freep(&s->opt);
-        av_freep(&s->path);
-    }
+    av_freep(&s->opt);
+    av_freep(&s->path);
     ff_af_queue_close(&s->afq);
     av_freep(&s->fdsp);
 
     return 0;
 }
 
+static av_cold void nellymoser_init_static(void)
+{
+    /* faster way of doing
+    for (int i = 0; i < POW_TABLE_SIZE; i++)
+       pow_table[i] = 2^(-i / 2048.0 - 3.0 + POW_TABLE_OFFSET); */
+    pow_table[0] = 1;
+    pow_table[1024] = M_SQRT1_2;
+    for (int i = 1; i < 513; i++) {
+        double tmp = exp2(-i / 2048.0);
+        pow_table[i] = tmp;
+        pow_table[1024-i] = M_SQRT1_2 / tmp;
+        pow_table[1024+i] = tmp * M_SQRT1_2;
+        pow_table[2048-i] = 0.5 / tmp;
+    }
+    /* Generate overlap window */
+    ff_init_ff_sine_windows(7);
+}
+
 static av_cold int encode_init(AVCodecContext *avctx)
 {
+    static AVOnce init_static_once = AV_ONCE_INIT;
     NellyMoserEncodeContext *s = avctx->priv_data;
-    int i, ret;
+    int ret;
 
     if (avctx->channels != 1) {
         av_log(avctx, AV_LOG_ERROR, "Nellymoser supports only 1 channel\n");
@@ -175,21 +193,6 @@ static av_cold int encode_init(AVCodecContext *avctx)
     if (!s->fdsp)
         return AVERROR(ENOMEM);
 
-    /* Generate overlap window */
-    ff_init_ff_sine_windows(7);
-    /* faster way of doing
-    for (i = 0; i < POW_TABLE_SIZE; i++)
-       pow_table[i] = 2^(-i / 2048.0 - 3.0 + POW_TABLE_OFFSET); */
-    pow_table[0] = 1;
-    pow_table[1024] = M_SQRT1_2;
-    for (i = 1; i < 513; i++) {
-        double tmp = exp2(-i / 2048.0);
-        pow_table[i] = tmp;
-        pow_table[1024-i] = M_SQRT1_2 / tmp;
-        pow_table[1024+i] = tmp * M_SQRT1_2;
-        pow_table[2048-i] = 0.5 / tmp;
-    }
-
     if (s->avctx->trellis) {
         s->opt  = av_malloc(NELLY_BANDS * OPT_SIZE * sizeof(float  ));
         s->path = av_malloc(NELLY_BANDS * OPT_SIZE * sizeof(uint8_t));
@@ -197,6 +200,8 @@ static av_cold int encode_init(AVCodecContext *avctx)
             return AVERROR(ENOMEM);
     }
 
+    ff_thread_once(&init_static_once, nellymoser_init_static);
+
     return 0;
 }
 
@@ -412,7 +417,7 @@ static int encode_frame(AVCodecContext *avctx, AVPacket *avpkt,
     return 0;
 }
 
-AVCodec ff_nellymoser_encoder = {
+const AVCodec ff_nellymoser_encoder = {
     .name           = "nellymoser",
     .long_name      = NULL_IF_CONFIG_SMALL("Nellymoser Asao"),
     .type           = AVMEDIA_TYPE_AUDIO,
@@ -424,5 +429,5 @@ AVCodec ff_nellymoser_encoder = {
     .capabilities   = AV_CODEC_CAP_SMALL_LAST_FRAME | AV_CODEC_CAP_DELAY,
     .sample_fmts    = (const enum AVSampleFormat[]){ AV_SAMPLE_FMT_FLT,
                                                      AV_SAMPLE_FMT_NONE },
-    .caps_internal  = FF_CODEC_CAP_INIT_CLEANUP,
+    .caps_internal  = FF_CODEC_CAP_INIT_THREADSAFE | FF_CODEC_CAP_INIT_CLEANUP,
 };