hevc: ppc: Add HEVC 4x4 IDCT for PowerPC

[ffmpeg] / libavcodec / cngdec.c

diff --git a/libavcodec/cngdec.c b/libavcodec/cngdec.c
index c05bfd95788791ad6f4076a9f5a62dccd4b042b2..482ef94a3289d987060dc3fe364c7a55fb2d7143 100644 (file)
--- a/libavcodec/cngdec.c
+++ b/libavcodec/cngdec.c
@@ -24,14 +24,15 @@
 #include "libavutil/common.h"
 #include "avcodec.h"
 #include "celp_filters.h"
+#include "internal.h"
 #include "libavutil/lfg.h"
 
 typedef struct CNGContext {
-    AVFrame avframe;
     float *refl_coef, *target_refl_coef;
     float *lpc_coef;
     int order;
     int energy, target_energy;
+    int inited;
     float *filter_out;
     float *excitation;
     AVLFG lfg;
@@ -56,8 +57,6 @@ static av_cold int cng_decode_init(AVCodecContext *avctx)
     avctx->channels    = 1;
     avctx->sample_rate = 8000;
 
-    avcodec_get_frame_defaults(&p->avframe);
-    avctx->coded_frame  = &p->avframe;
     p->order            = 12;
     avctx->frame_size   = 640;
     p->refl_coef        = av_mallocz(p->order * sizeof(*p->refl_coef));
@@ -94,10 +93,16 @@ static void make_lpc_coefs(float *lpc, const float *refl, int order)
         memcpy(lpc, cur, sizeof(*lpc) * order);
 }
 
-static int cng_decode_frame(AVCodecContext *avctx, void *data,
-                              int *got_frame_ptr, AVPacket *avpkt)
+static void cng_decode_flush(AVCodecContext *avctx)
 {
+    CNGContext *p = avctx->priv_data;
+    p->inited = 0;
+}
 
+static int cng_decode_frame(AVCodecContext *avctx, void *data,
+                            int *got_frame_ptr, AVPacket *avpkt)
+{
+    AVFrame *frame = data;
     CNGContext *p = avctx->priv_data;
     int buf_size  = avpkt->size;
     int ret, i;
@@ -106,17 +111,23 @@ static int cng_decode_frame(AVCodecContext *avctx, void *data,
     float scaling;
 
     if (avpkt->size) {
-        float dbov = -avpkt->data[0] / 10.0;
-        p->target_energy = 1081109975 * pow(10, dbov) * 0.75;
+        int dbov = -avpkt->data[0];
+        p->target_energy = 1081109975 * pow(10, dbov / 10.0) * 0.75;
         memset(p->target_refl_coef, 0, p->order * sizeof(*p->target_refl_coef));
         for (i = 0; i < FFMIN(avpkt->size - 1, p->order); i++) {
             p->target_refl_coef[i] = (avpkt->data[1 + i] - 127) / 128.0;
         }
     }
 
-    p->energy = p->energy / 2 + p->target_energy / 2;
-    for (i = 0; i < p->order; i++)
-        p->refl_coef[i] = 0.6 *p->refl_coef[i] + 0.4 * p->target_refl_coef[i];
+    if (p->inited) {
+        p->energy = p->energy / 2 + p->target_energy / 2;
+        for (i = 0; i < p->order; i++)
+            p->refl_coef[i] = 0.6 *p->refl_coef[i] + 0.4 * p->target_refl_coef[i];
+    } else {
+        p->energy = p->target_energy;
+        memcpy(p->refl_coef, p->target_refl_coef, p->order * sizeof(*p->refl_coef));
+        p->inited = 1;
+    }
     make_lpc_coefs(p->lpc_coef, p->refl_coef, p->order);
 
     for (i = 0; i < p->order; i++)
@@ -130,33 +141,33 @@ static int cng_decode_frame(AVCodecContext *avctx, void *data,
     ff_celp_lp_synthesis_filterf(p->filter_out + p->order, p->lpc_coef,
                                  p->excitation, avctx->frame_size, p->order);
 
-    p->avframe.nb_samples = avctx->frame_size;
-    if ((ret = avctx->get_buffer(avctx, &p->avframe)) < 0) {
+    frame->nb_samples = avctx->frame_size;
+    if ((ret = ff_get_buffer(avctx, frame, 0)) < 0) {
         av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
         return ret;
     }
-    buf_out = (int16_t *)p->avframe.data[0];
+    buf_out = (int16_t *)frame->data[0];
     for (i = 0; i < avctx->frame_size; i++)
         buf_out[i] = p->filter_out[i + p->order];
     memcpy(p->filter_out, p->filter_out + avctx->frame_size,
            p->order * sizeof(*p->filter_out));
 
-    *got_frame_ptr   = 1;
-    *(AVFrame *)data = p->avframe;
+    *got_frame_ptr = 1;
 
     return buf_size;
 }
 
 AVCodec ff_comfortnoise_decoder = {
     .name           = "comfortnoise",
+    .long_name      = NULL_IF_CONFIG_SMALL("RFC 3389 comfort noise generator"),
     .type           = AVMEDIA_TYPE_AUDIO,
     .id             = AV_CODEC_ID_COMFORT_NOISE,
     .priv_data_size = sizeof(CNGContext),
     .init           = cng_decode_init,
     .decode         = cng_decode_frame,
+    .flush          = cng_decode_flush,
     .close          = cng_decode_close,
-    .long_name      = NULL_IF_CONFIG_SMALL("RFC 3389 comfort noise generator"),
     .sample_fmts    = (const enum AVSampleFormat[]){ AV_SAMPLE_FMT_S16,
                                                      AV_SAMPLE_FMT_NONE },
-    .capabilities   = CODEC_CAP_DELAY | CODEC_CAP_DR1,
+    .capabilities   = AV_CODEC_CAP_DELAY | AV_CODEC_CAP_DR1,
 };