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avcodec/atrac3: Avoid indirection when calling float dsp function 

Do this by only keeping the only function pointer from
the AVFloatDSPContext that is needed lateron.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
This commit is contained in:
Andreas Rheinhardt 2020-09-13 21:10:20 +02:00
parent f9ff4b252f
commit 0b7474a591
1 changed files with 10 additions and 6 deletions
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16
libavcodec/atrac3.c
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@ -111,7 +111,8 @@ typedef struct ATRAC3Context {
AtracGCContext gainc_ctx;
FFTContext mdct_ctx;
AVFloatDSPContext *fdsp;
void (*vector_fmul)(float *dst, const float *src0, const float *src1,
int len);
} ATRAC3Context;
static DECLARE_ALIGNED(32, float, mdct_window)[MDCT_SIZE];
@ -144,7 +145,7 @@ static void imlt(ATRAC3Context *q, float *input, float *output, int odd_band)
q->mdct_ctx.imdct_calc(&q->mdct_ctx, output, input);
/* Perform windowing on the output. */
q->fdsp->vector_fmul(output, output, mdct_window, MDCT_SIZE);
q->vector_fmul(output, output, mdct_window, MDCT_SIZE);
}
/*
@ -194,7 +195,6 @@ static av_cold int atrac3_decode_close(AVCodecContext *avctx)
av_freep(&q->units);
av_freep(&q->decoded_bytes_buffer);
av_freep(&q->fdsp);
ff_mdct_end(&q->mdct_ctx);
@ -874,6 +874,7 @@ static av_cold int atrac3_decode_init(AVCodecContext *avctx)
int version, delay, samples_per_frame, frame_factor;
const uint8_t *edata_ptr = avctx->extradata;
ATRAC3Context *q = avctx->priv_data;
AVFloatDSPContext *fdsp;
if (avctx->channels < MIN_CHANNELS || avctx->channels > MAX_CHANNELS) {
av_log(avctx, AV_LOG_ERROR, "Channel configuration error!\n");
@ -997,12 +998,15 @@ static av_cold int atrac3_decode_init(AVCodecContext *avctx)
}
ff_atrac_init_gain_compensation(&q->gainc_ctx, 4, 3);
q->fdsp = avpriv_float_dsp_alloc(avctx->flags & AV_CODEC_FLAG_BITEXACT);
fdsp = avpriv_float_dsp_alloc(avctx->flags & AV_CODEC_FLAG_BITEXACT);
if (!fdsp)
return AVERROR(ENOMEM);
q->vector_fmul = fdsp->vector_fmul;
av_free(fdsp);
q->units = av_mallocz_array(avctx->channels, sizeof(*q->units));
if (!q->units || !q->fdsp) {
if (!q->units)
return AVERROR(ENOMEM);
}
return 0;
}