dashenc: Simplify code by using a local variable

[ffmpeg] / libavcodec / cook.c

diff --git a/libavcodec/cook.c b/libavcodec/cook.c
index 90d78eb3f562d33188a5afeb3d91c584cc0bea5d..5c55d2b5915466612639022c46a86a57378ea170 100644 (file)
--- a/libavcodec/cook.c
+++ b/libavcodec/cook.c
@@ -44,9 +44,10 @@
 
 #include "libavutil/channel_layout.h"
 #include "libavutil/lfg.h"
+
+#include "audiodsp.h"
 #include "avcodec.h"
 #include "get_bits.h"
-#include "dsputil.h"
 #include "bytestream.h"
 #include "fft.h"
 #include "internal.h"
@@ -63,12 +64,12 @@
 #define SUBBAND_SIZE    20
 #define MAX_SUBPACKETS   5
 
-typedef struct {
+typedef struct cook_gains {
     int *now;
     int *previous;
 } cook_gains;
 
-typedef struct {
+typedef struct COOKSubpacket {
     int                 ch_idx;
     int                 size;
     int                 num_channels;
@@ -122,7 +123,7 @@ typedef struct cook {
     void (*saturate_output)(struct cook *q, float *out);
 
     AVCodecContext*     avctx;
-    DSPContext          dsp;
+    AudioDSPContext     adsp;
     GetBitContext       gb;
     /* stream data */
     int                 num_vectors;
@@ -865,8 +866,8 @@ static inline void decode_bytes_and_gain(COOKContext *q, COOKSubpacket *p,
  */
 static void saturate_output_float(COOKContext *q, float *out)
 {
-    q->dsp.vector_clipf(out, q->mono_mdct_output + q->samples_per_channel,
-                        -1.0f, 1.0f, FFALIGN(q->samples_per_channel, 8));
+    q->adsp.vector_clipf(out, q->mono_mdct_output + q->samples_per_channel,
+                         -1.0f, 1.0f, FFALIGN(q->samples_per_channel, 8));
 }
 
 
@@ -1050,7 +1051,7 @@ static av_cold int cook_decode_init(AVCodecContext *avctx)
     q->avctx = avctx;
 
     /* Take care of the codec specific extradata. */
-    if (extradata_size <= 0) {
+    if (extradata_size < 8) {
         av_log(avctx, AV_LOG_ERROR, "Necessary extradata missing!\n");
         return AVERROR_INVALIDDATA;
     }
@@ -1065,7 +1066,7 @@ static av_cold int cook_decode_init(AVCodecContext *avctx)
     /* Initialize RNG. */
     av_lfg_init(&q->random_state, 0);
 
-    ff_dsputil_init(&q->dsp, avctx);
+    ff_audiodsp_init(&q->adsp);
 
     while (edata_ptr < edata_ptr_end) {
         /* 8 for mono, 16 for stereo, ? for multichannel
@@ -1217,7 +1218,7 @@ static av_cold int cook_decode_init(AVCodecContext *avctx)
         av_mallocz(avctx->block_align
                    + DECODE_BYTES_PAD1(avctx->block_align)
                    + FF_INPUT_BUFFER_PADDING_SIZE);
-    if (q->decoded_bytes_buffer == NULL)
+    if (!q->decoded_bytes_buffer)
         return AVERROR(ENOMEM);
 
     /* Initialize transform. */
@@ -1255,6 +1256,7 @@ static av_cold int cook_decode_init(AVCodecContext *avctx)
 
 AVCodec ff_cook_decoder = {
     .name           = "cook",
+    .long_name      = NULL_IF_CONFIG_SMALL("Cook / Cooker / Gecko (RealAudio G2)"),
     .type           = AVMEDIA_TYPE_AUDIO,
     .id             = AV_CODEC_ID_COOK,
     .priv_data_size = sizeof(COOKContext),
@@ -1262,7 +1264,6 @@ AVCodec ff_cook_decoder = {
     .close          = cook_decode_close,
     .decode         = cook_decode_frame,
     .capabilities   = CODEC_CAP_DR1,
-    .long_name      = NULL_IF_CONFIG_SMALL("Cook / Cooker / Gecko (RealAudio G2)"),
     .sample_fmts    = (const enum AVSampleFormat[]) { AV_SAMPLE_FMT_FLTP,
                                                       AV_SAMPLE_FMT_NONE },
 };