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nuv: Reuse the DSPContext from RTJpegContext

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There is no point in populating NuvContext with another DSPContext.

Also split static and dynamic initialization bits to avoid running the
static initialization parts over and over.
This commit is contained in:
Diego Biurrun 2014-01-29 18:04:55 +01:00
parent 46caba4a65
commit 1df0b06162
3 changed files with 27 additions and 23 deletions
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12
libavcodec/nuv.c
View File

@ -40,7 +40,6 @@ typedef struct {
unsigned char *decomp_buf;
uint32_t lq[64], cq[64];
RTJpegContext rtj;
DSPContext dsp;
} NuvContext;
static const uint8_t fallback_lquant[] = {
@ -136,12 +135,10 @@ static int codec_reinit(AVCodecContext *avctx, int width, int height,
return AVERROR(ENOMEM);
} else
c->decomp_buf = ptr;
ff_rtjpeg_decode_init(&c->rtj, &c->dsp, c->width, c->height,
c->lq, c->cq);
ff_rtjpeg_decode_init(&c->rtj, c->width, c->height, c->lq, c->cq);
av_frame_unref(c->pic);
} else if (quality != c->quality)
ff_rtjpeg_decode_init(&c->rtj, &c->dsp, c->width, c->height,
c->lq, c->cq);
ff_rtjpeg_decode_init(&c->rtj, c->width, c->height, c->lq, c->cq);
return 0;
}
@ -179,8 +176,7 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame,
ret = get_quant(avctx, c, buf, buf_size);
if (ret < 0)
return ret;
ff_rtjpeg_decode_init(&c->rtj, &c->dsp, c->width, c->height, c->lq,
c->cq);
ff_rtjpeg_decode_init(&c->rtj, c->width, c->height, c->lq, c->cq);
return orig_size;
}
@ -308,7 +304,7 @@ static av_cold int decode_init(AVCodecContext *avctx)
if (avctx->extradata_size)
get_quant(avctx, c, avctx->extradata, avctx->extradata_size);
ff_dsputil_init(&c->dsp, avctx);
ff_rtjpeg_init(&c->rtj, avctx);
if ((ret = codec_reinit(avctx, avctx->width, avctx->height, -1)) < 0)
return ret;

29
libavcodec/rtjpeg.c
View File

@ -121,7 +121,7 @@ int ff_rtjpeg_decode_frame_yuv420(RTJpegContext *c, AVFrame *f,
if (res < 0) \
return res; \
if (res > 0) \
c->dsp->idct_put(dst, stride, block); \
c->dsp.idct_put(dst, stride, block); \
} while (0)
int16_t *block = c->block;
BLOCK(c->lquant, y1, f->linesize[0]);
@ -148,7 +148,6 @@ int ff_rtjpeg_decode_frame_yuv420(RTJpegContext *c, AVFrame *f,
/**
* @brief initialize an RTJpegContext, may be called multiple times
* @param c context to initialize
* @param dsp specifies the idct to use for decoding
* @param width width of image, will be rounded down to the nearest multiple
* of 16 for decoding
* @param height height of image, will be rounded down to the nearest multiple
@ -156,21 +155,29 @@ int ff_rtjpeg_decode_frame_yuv420(RTJpegContext *c, AVFrame *f,
* @param lquant luma quantization table to use
* @param cquant chroma quantization table to use
*/
void ff_rtjpeg_decode_init(RTJpegContext *c, DSPContext *dsp,
int width, int height,
void ff_rtjpeg_decode_init(RTJpegContext *c, int width, int height,
const uint32_t *lquant, const uint32_t *cquant) {
int i;
c->dsp = dsp;
for (i = 0; i < 64; i++) {
int z = ff_zigzag_direct[i];
int p = c->dsp->idct_permutation[i];
z = ((z << 3) | (z >> 3)) & 63; // rtjpeg uses a transposed variant
// permute the scan and quantization tables for the chosen idct
c->scan[i] = c->dsp->idct_permutation[z];
int p = c->dsp.idct_permutation[i];
c->lquant[p] = lquant[i];
c->cquant[p] = cquant[i];
}
c->w = width;
c->h = height;
}
void ff_rtjpeg_init(RTJpegContext *c, AVCodecContext *avctx)
{
int i;
ff_dsputil_init(&c->dsp, avctx);
for (i = 0; i < 64; i++) {
int z = ff_zigzag_direct[i];
z = ((z << 3) | (z >> 3)) & 63; // rtjpeg uses a transposed variant
// permute the scan and quantization tables for the chosen idct
c->scan[i] = c->dsp.idct_permutation[z];
}
}

9
libavcodec/rtjpeg.h
View File

@ -31,16 +31,17 @@
typedef struct RTJpegContext {
int w, h;
DSPContext *dsp;
DSPContext dsp;
uint8_t scan[64];
uint32_t lquant[64];
uint32_t cquant[64];
DECLARE_ALIGNED(16, int16_t, block)[64];
} RTJpegContext;
void ff_rtjpeg_decode_init(RTJpegContext *c, DSPContext *dsp,
int width, int height,
const uint32_t *lquant, const uint32_t *cquant);
void ff_rtjpeg_init(RTJpegContext *c, AVCodecContext *avctx);
void ff_rtjpeg_decode_init(RTJpegContext *c, int width, int height,
const uint32_t *lquant, const uint32_t *cquant);
int ff_rtjpeg_decode_frame_yuv420(RTJpegContext *c, AVFrame *f,
const uint8_t *buf, int buf_size);