mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-12-18 22:36:33 +00:00
57ce0321c8
Original commit message from CVS:
Added a tarkin encoder/decoder plugin.
I moved the tarking CVS code in here temporarily until they have a
library (hence this plugin is in ext)
test with:
./gst-launch filesrc location=/opt/data/shihad.mpg ! mpegdemux video_00! { queue ! mpeg2dec ! colorspace ! tarkinenc bitrate=3000 ! disksink location=out.ogg }
./gst-launch filesrc location=out.ogg ! tarkindec ! colorspace ! xvideosink
121 lines
3 KiB
C
121 lines
3 KiB
C
#include "mem.h"
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#include "wavelet.h"
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/**
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* (The transform code is in wavelet_xform.c)
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*/
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#define MAX(a,b) ((a) > (b) ? (a) : (b))
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#define MAX3(a,b,c) (MAX(a,MAX(b,c)))
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Wavelet3DBuf* wavelet_3d_buf_new (uint32_t width, uint32_t height,
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uint32_t frames)
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{
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Wavelet3DBuf* buf = (Wavelet3DBuf*) MALLOC (sizeof (Wavelet3DBuf));
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uint32_t _w = width;
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uint32_t _h = height;
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uint32_t _f = frames;
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int level;
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if (!buf)
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return NULL;
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buf->data = (TYPE*) MALLOC (width * height * frames * sizeof (TYPE));
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if (!buf->data) {
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wavelet_3d_buf_destroy (buf);
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return NULL;
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}
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buf->width = width;
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buf->height = height;
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buf->frames = frames;
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buf->scales = 1;
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while (_w > 1 || _h > 1 || _f > 1) {
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buf->scales++;
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_w = (_w+1)/2;
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_h = (_h+1)/2;
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_f = (_f+1)/2;
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}
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buf->w = (uint32_t*) MALLOC (buf->scales * sizeof (uint32_t));
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buf->h = (uint32_t*) MALLOC (buf->scales * sizeof (uint32_t));
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buf->f = (uint32_t*) MALLOC (buf->scales * sizeof (uint32_t));
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buf->offset = (uint32_t (*) [8]) MALLOC (8 * buf->scales * sizeof (uint32_t));
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buf->scratchbuf = (TYPE*) MALLOC (MAX3(width, height, frames) * sizeof (TYPE));
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if (!buf->w || !buf->h || !buf->f || !buf->offset || !buf->scratchbuf) {
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wavelet_3d_buf_destroy (buf);
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return NULL;
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}
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buf->w [buf->scales-1] = width;
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buf->h [buf->scales-1] = height;
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buf->f [buf->scales-1] = frames;
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for (level=buf->scales-2; level>=0; level--) {
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buf->w [level] = (buf->w [level+1] + 1) / 2;
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buf->h [level] = (buf->h [level+1] + 1) / 2;
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buf->f [level] = (buf->f [level+1] + 1) / 2;
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buf->offset[level][0] = 0;
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buf->offset[level][1] = buf->w [level];
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buf->offset[level][2] = buf->h [level] * width;
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buf->offset[level][3] = buf->f [level] * width * height;
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buf->offset[level][4] = buf->offset [level][2] + buf->w [level];
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buf->offset[level][5] = buf->offset [level][3] + buf->w [level];
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buf->offset[level][6] = buf->offset [level][3] + buf->offset [level][2];
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buf->offset[level][7] = buf->offset [level][6] + buf->w [level];
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}
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return buf;
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}
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void wavelet_3d_buf_destroy (Wavelet3DBuf* buf)
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{
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if (buf) {
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if (buf->data)
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FREE (buf->data);
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if (buf->w)
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FREE (buf->w);
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if (buf->h)
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FREE (buf->h);
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if (buf->f)
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FREE (buf->f);
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if (buf->offset)
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FREE (buf->offset);
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if (buf->scratchbuf)
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FREE (buf->scratchbuf);
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FREE (buf);
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}
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}
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#if defined(DBG_XFORM)
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#include "pnm.h"
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void wavelet_3d_buf_dump (char *fmt,
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uint32_t first_frame_in_buf,
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uint32_t id,
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Wavelet3DBuf* buf,
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int16_t offset)
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{
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char fname [256];
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uint32_t f;
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for (f=0; f<buf->frames; f++) {
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snprintf (fname, 256, fmt, id, first_frame_in_buf + f);
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write_pgm16 (fname, buf->data + f * buf->width * buf->height,
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buf->width, buf->height, offset);
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}
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}
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#endif
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