lavc: add Intel libmfx-based MPEG2 decoder.

[ffmpeg] / libavcodec / apedec.c

diff --git a/libavcodec/apedec.c b/libavcodec/apedec.c
index 6329295c9a8a3be701e0ec50a9e436c98abe8480..131c6f32d744f8a16628181186217848d4f48ceb 100644 (file)
--- a/libavcodec/apedec.c
+++ b/libavcodec/apedec.c
@@ -27,7 +27,7 @@
 #include "libavutil/opt.h"
 #include "apedsp.h"
 #include "avcodec.h"
-#include "dsputil.h"
+#include "bswapdsp.h"
 #include "bytestream.h"
 #include "internal.h"
 #include "get_bits.h"
@@ -136,7 +136,7 @@ typedef struct APEPredictor {
 typedef struct APEContext {
     AVClass *class;                          ///< class for AVOptions
     AVCodecContext *avctx;
-    DSPContext dsp;
+    BswapDSPContext bdsp;
     APEDSPContext adsp;
     int channels;
     int samples;                             ///< samples left to decode in current frame
@@ -314,7 +314,7 @@ static av_cold int ape_decode_init(AVCodecContext *avctx)
     if (ARCH_X86)
         ff_apedsp_init_x86(&s->adsp);
 
-    ff_dsputil_init(&s->dsp, avctx);
+    ff_bswapdsp_init(&s->bdsp);
     avctx->channel_layout = (avctx->channels==2) ? AV_CH_LAYOUT_STEREO : AV_CH_LAYOUT_MONO;
 
     return 0;
@@ -614,12 +614,12 @@ static void decode_array_0000(APEContext *ctx, GetBitContext *gb,
     int ksummax, ksummin;
 
     rice->ksum = 0;
-    for (i = 0; i < 5; i++) {
+    for (i = 0; i < FFMIN(blockstodecode, 5); i++) {
         out[i] = get_rice_ook(&ctx->gb, 10);
         rice->ksum += out[i];
     }
     rice->k = av_log2(rice->ksum / 10) + 1;
-    for (; i < 64; i++) {
+    for (; i < FFMIN(blockstodecode, 64); i++) {
         out[i] = get_rice_ook(&ctx->gb, rice->k);
         rice->ksum += out[i];
         rice->k = av_log2(rice->ksum / ((i + 1) * 2)) + 1;
@@ -935,10 +935,8 @@ static void long_filter_ehigh_3830(int32_t *buffer, int length)
 {
     int i, j;
     int32_t dotprod, sign;
-    int32_t coeffs[8], delay[8];
+    int32_t coeffs[8] = { 0 }, delay[8] = { 0 };
 
-    memset(coeffs, 0, sizeof(coeffs));
-    memset(delay,  0, sizeof(delay));
     for (i = 0; i < length; i++) {
         dotprod = 0;
         sign = APESIGN(buffer[i]);
@@ -1454,7 +1452,8 @@ static int ape_decode_frame(AVCodecContext *avctx, void *data,
         av_fast_malloc(&s->data, &s->data_size, buf_size);
         if (!s->data)
             return AVERROR(ENOMEM);
-        s->dsp.bswap_buf((uint32_t*)s->data, (const uint32_t*)buf, buf_size >> 2);
+        s->bdsp.bswap_buf((uint32_t *) s->data, (const uint32_t *) buf,
+                          buf_size >> 2);
         memset(s->data + (buf_size & ~3), 0, buf_size & 3);
         s->ptr = s->data;
         s->data_end = s->data + buf_size;