[Spice-devel] [8/8]quic: implemenet QUIC_IMAGE_TYPE_RGBA decoding
Aric Stewart
aric at codeweavers.com
Mon Sep 24 08:53:06 PDT 2012
Signed-off-by: Aric Stewart <aric at codeweavers.com>
---
quic.js | 268 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++-
1 files changed, 264 insertions(+), 4 deletions(-)
diff --git a/quic.js b/quic.js
index 26a021f..9bb9f47 100644
--- a/quic.js
+++ b/quic.js
@@ -942,6 +942,245 @@ QuicEncoder.prototype.quic_rgb32_uncompress_row = function (prev_row, cur_row)
}
}
+QuicEncoder.prototype.quic_four_uncompress_row0_seg = function (channel, i,
+ correlate_row, cur_row, end, waitmask,
+ bpc, bpc_mask)
+{
+ var stopidx;
+ var a;
+
+ if (i == 0) {
+ a = golomb_decoding_8bpc(channel.buckets_ptrs[correlate_row.zero].bestcode, this.io_word);
+ correlate_row.row[0] = a.rc;
+ cur_row[rgb32_pixel_pad] = family_8bpc.xlatL2U[a.rc];
+ this.decode_eatbits(a.codewordlen);
+
+ if (channel.state.waitcnt) {
+ --channel.state.waitcnt;
+ } else {
+ channel.state.waitcnt = (channel.state.tabrand() & waitmask);
+ channel.buckets_ptrs[correlate_row.zero].update_model_8bpc(channel.state, correlate_row.row[0], bpc);
+ }
+ stopidx = ++i + channel.state.waitcnt;
+ } else {
+ stopidx = i + channel.state.waitcnt;
+ }
+
+ while (stopidx < end) {
+ var pbucket;
+
+ for (; i <= stopidx; i++) {
+ pbucket = channel.buckets_ptrs[correlate_row.row[i - 1]];
+
+ a = golomb_decoding_8bpc(pbucket.bestcode, this.io_word);
+ correlate_row.row[i] = a.rc;
+ cur_row[(i*rgb32_pixel_size)+rgb32_pixel_pad] = (family_8bpc.xlatL2U[a.rc] + cur_row[((i-1)*rgb32_pixel_size)+rgb32_pixel_pad]) & bpc_mask;
+ this.decode_eatbits(a.codewordlen);
+ }
+
+ pbucket.update_model_8bpc(channel.state, correlate_row.row[stopidx], bpc);
+
+ stopidx = i + (channel.state.tabrand() & waitmask);
+ }
+
+ for (; i < end; i++) {
+ a = golomb_decoding_8bpc(channel.buckets_ptrs[correlate_row.row[i-1]].bestcode, this.io_word);
+
+ correlate_row.row[i] = a.rc;
+ cur_row[(i*rgb32_pixel_size)+rgb32_pixel_pad] = (family_8bpc.xlatL2U[a.rc] + cur_row[((i-1)*rgb32_pixel_size)+rgb32_pixel_pad]) & bpc_mask;
+ this.decode_eatbits(a.codewordlen);
+ }
+ channel.state.waitcnt = stopidx - end;
+}
+
+QuicEncoder.prototype.quic_four_uncompress_row0 = function(channel, cur_row)
+{
+ var bpc = 8;
+ var bpc_mask = 0xff;
+ var correlate_row = channel.correlate_row;
+ var pos = 0;
+ var width = this.width;
+
+ while ((wmimax > channel.state.wmidx) && (channel.state.wmileft <= width)) {
+ if (channel.state.wmileft) {
+ this.quic_four_uncompress_row0_seg(channel, pos, correlate_row, cur_row,
+ pos + channel.state.wmileft, bppmask[channel.state.wmidx],
+ bpc, bpc_mask);
+ pos += channel.state.wmileft;
+ width -= channel.state.wmileft;
+ }
+
+ channel.state.wmidx++;
+ channel.state.set_wm_trigger();
+ channel.state.wmileft = wminext;
+ }
+
+ if (width) {
+ this.quic_four_uncompress_row0_seg(channel, pos, correlate_row, cur_row, pos + width,
+ bppmask[channel.state.wmidx], bpc, bpc_mask);
+ if (wmimax > channel.state.wmidx) {
+ channel.state.wmileft -= width;
+ }
+ }
+}
+
+QuicEncoder.prototype.quic_four_uncompress_row_seg = function (channel,
+ correlate_row, prev_row, cur_row, i,
+ end, bpc, bpc_mask)
+{
+ var waitmask = bppmask[channel.state.wmidx];
+ var stopidx;
+
+ var run_index = 0;
+ var run_end;
+
+ var a;
+
+ if (i == 0) {
+ a = golomb_decoding_8bpc(channel.buckets_ptrs[correlate_row.zero].bestcode, this.io_word);
+
+ correlate_row.row[0] = a.rc
+ cur_row[rgb32_pixel_pad] = (family_8bpc.xlatL2U[a.rc] + prev_row[rgb32_pixel_pad]) & bpc_mask;
+ this.decode_eatbits(a.codewordlen);
+
+ if (channel.state.waitcnt) {
+ --channel.state.waitcnt;
+ } else {
+ channel.state.waitcnt = (channel.state.tabrand() & waitmask);
+ channel.buckets_ptrs[correlate_row.zero].update_model_8bpc(channel.state, correlate_row.row[0], bpc);
+ }
+ stopidx = ++i + channel.state.waitcnt;
+ } else {
+ stopidx = i + channel.state.waitcnt;
+ }
+ for (;;) {
+ var rc = 0;
+ while (stopidx < end && !rc) {
+ var pbucket;
+ for (; i <= stopidx && !rc; i++) {
+ var pixel = i * rgb32_pixel_size;
+ var pixelm1 = (i-1) * rgb32_pixel_size;
+ var pixelm2 = (i-2) * rgb32_pixel_size;
+
+ if (prev_row[pixelm1+rgb32_pixel_pad] == prev_row[pixel+rgb32_pixel_pad])
+ {
+ if (run_index != i && i > 2 && cur_row[pixelm1+rgb32_pixel_pad] == cur_row[pixelm2+rgb32_pixel_pad])
+ {
+ /* do run */
+ channel.state.waitcnt = stopidx - i;
+ run_index = i;
+
+ run_end = i + this.decode_run(channel.state);
+
+ for (; i < run_end; i++) {
+ var pixel = i * rgb32_pixel_size;
+ var pixelm1 = (i-1) * rgb32_pixel_size;
+ cur_row[pixel+rgb32_pixel_pad] = cur_row[pixelm1+rgb32_pixel_pad];
+ }
+
+ if (i == end) {
+ return;
+ }
+ else
+ {
+ stopidx = i + channel.state.waitcnt;
+ rc = 1;
+ break;
+ }
+ }
+ }
+
+ pbucket = channel.buckets_ptrs[correlate_row.row[i - 1]];
+ a = golomb_decoding_8bpc(pbucket.bestcode, this.io_word);
+ correlate_row.row[i] = a.rc
+ cur_row[pixel+rgb32_pixel_pad] = (family_8bpc.xlatL2U[a.rc] + ((cur_row[pixelm1+rgb32_pixel_pad] + prev_row[pixel+rgb32_pixel_pad]) >> 1)) & bpc_mask;
+ this.decode_eatbits(a.codewordlen);
+ }
+ if (rc)
+ break;
+
+ pbucket.update_model_8bpc(channel.state, correlate_row.row[stopidx], bpc);
+
+ stopidx = i + (channel.state.tabrand() & waitmask);
+ }
+
+ for (; i < end && !rc; i++) {
+ var pixel = i * rgb32_pixel_size;
+ var pixelm1 = (i-1) * rgb32_pixel_size;
+ var pixelm2 = (i-2) * rgb32_pixel_size;
+ if (prev_row[pixelm1+rgb32_pixel_pad] == prev_row[pixel+rgb32_pixel_pad])
+ {
+ if (run_index != i && i > 2 && cur_row[pixelm1+rgb32_pixel_pad] == cur_row[pixelm2+rgb32_pixel_pad])
+ {
+ /* do run */
+ channel.state.waitcnt = stopidx - i;
+ run_index = i;
+
+ run_end = i + this.decode_run(channel.state);
+
+ for (; i < run_end; i++) {
+ var pixel = i * rgb32_pixel_size;
+ var pixelm1 = (i-1) * rgb32_pixel_size;
+ cur_row[pixel+rgb32_pixel_pad] = cur_row[pixelm1+rgb32_pixel_pad];
+ }
+
+ if (i == end) {
+ return;
+ }
+ else
+ {
+ stopidx = i + channel.state.waitcnt;
+ rc = 1;
+ break;
+ }
+ }
+ }
+
+ a = golomb_decoding_8bpc(channel.buckets_ptrs[correlate_row.row[i-1]].bestcode, this.io_word);
+ correlate_row.row[i] = a.rc;
+ cur_row[pixel+rgb32_pixel_pad] = (family_8bpc.xlatL2U[a.rc] + ((cur_row[pixelm1+rgb32_pixel_pad] + prev_row[pixel+rgb32_pixel_pad]) >> 1)) & bpc_mask;
+ this.decode_eatbits(a.codewordlen);
+ }
+
+ if (!rc)
+ {
+ channel.state.waitcnt = stopidx - end;
+ return;
+ }
+ }
+}
+
+QuicEncoder.prototype.quic_four_uncompress_row = function(channel, prev_row,
+ cur_row)
+{
+ var bpc = 8;
+ var bpc_mask = 0xff;
+ var correlate_row = channel.correlate_row;
+ var pos = 0;
+ var width = this.width;
+
+ while ((wmimax > channel.state.wmidx) && (channel.state.wmileft <= width)) {
+ if (channel.state.wmileft) {
+ this.quic_four_uncompress_row_seg(channel, correlate_row, prev_row, cur_row, pos,
+ pos + channel.state.wmileft, bpc, bpc_mask);
+ pos += channel.state.wmileft;
+ width -= channel.state.wmileft;
+ }
+
+ channel.state.wmidx++;
+ channel.state.set_wm_trigger();
+ channel.state.wmileft = wminext;
+ }
+
+ if (width) {
+ this.quic_four_uncompress_row_seg(channel, correlate_row, prev_row, cur_row, pos,
+ pos + width, bpc, bpc_mask);
+ if (wmimax > channel.state.wmidx) {
+ channel.state.wmileft -= width;
+ }
+ }
+}
+
/* We need to be generating rgb32 or rgba */
QuicEncoder.prototype.quic_decode = function(buf, stride)
{
@@ -973,8 +1212,28 @@ QuicEncoder.prototype.quic_decode = function(buf, stride)
return false;
break;
case QUIC_IMAGE_TYPE_RGBA:
- console.log("quic: unsupported output format\n");
- return false;
+ this.channels[0].correlate_row.zero = 0;
+ this.channels[1].correlate_row.zero = 0;
+ this.channels[2].correlate_row.zero = 0;
+ this.quic_rgb32_uncompress_row0(buf);
+
+ this.channels[3].correlate_row.zero = 0;
+ this.quic_four_uncompress_row0(this.channels[3], buf);
+
+ this.rows_completed++;
+ for (row = 1; row < this.height; row++) {
+ var prev = buf;
+ buf = prev.subarray(stride);
+
+ this.channels[0].correlate_row.zero = this.channels[0].correlate_row.row[0];
+ this.channels[1].correlate_row.zero = this.channels[1].correlate_row.row[0];
+ this.channels[2].correlate_row.zero = this.channels[2].correlate_row.row[0];
+ this.quic_rgb32_uncompress_row(prev, buf);
+
+ this.channels[3].correlate_row.zero = this.channels[3].correlate_row.row[0];
+ this.quic_four_uncompress_row(encoder.channels[3], prev, buf);
+ this.rows_completed++;
+ }
break;
case QUIC_IMAGE_TYPE_GRAY:
@@ -995,7 +1254,8 @@ QuicEncoder.prototype.simple_quic_decode = function(buf)
var stride = 4; /* FIXME - proper stride calc please */
if (!this.quic_decode_begin(buf))
return undefined;
- if (this.type != QUIC_IMAGE_TYPE_RGB32 && this.type != QUIC_IMAGE_TYPE_RGB24)
+ if (this.type != QUIC_IMAGE_TYPE_RGB32 && this.type != QUIC_IMAGE_TYPE_RGB24
+ && this.type != QUIC_IMAGE_TYPE_RGBA)
return undefined;
var out = new Uint8Array(this.width*this.height*4);
out[0] = 69;
@@ -1041,7 +1301,7 @@ function convert_spice_quic_to_web(context, spice_quic)
if (spice_quic.type !== QUIC_IMAGE_TYPE_RGBA)
ret.data[i + 3] = 255;
else
- ret.data[i + 3] = spice_quic.outptr[i + 3];
+ ret.data[i + 3] = 255 - spice_quic.outptr[i + 3];
}
return ret;
}
--
1.7.7.5 (Apple Git-26)
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