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Canopus HQ/HQA decoder

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Based on work by Kostya Shishkov <kostya.shishkov@gmail.com>.

Signed-off-by: Vittorio Giovara <vittorio.giovara@gmail.com>
pull/133/head
Vittorio Giovara 10 years ago
parent e6fb844f7b
commit 22526c1f55
17 changed files with 9029 additions and 1 deletions
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  1. 1
      Changelog
  2. 2
      doc/general.texi
  3. 2
      libavcodec/Makefile
  4. 1
      libavcodec/allcodecs.c
  5. 1
      libavcodec/avcodec.h
  6. 7
      libavcodec/codec_desc.c
  7. 384
      libavcodec/hq_hqa.c
  8. 60
      libavcodec/hq_hqa.h
  9. 8376
      libavcodec/hq_hqadata.c
  10. 130
      libavcodec/hq_hqadsp.c
  11. 38
      libavcodec/hq_hqadsp.h
  12. 2
      libavcodec/version.h
  13. 1
      libavformat/riff.c
  14. 12
      tests/fate/video.mak
  15. 9
      tests/ref/fate/canopus-hq_hqa-hq
  16. 2
      tests/ref/fate/canopus-hq_hqa-hqa
  17. 2
      tests/ref/fate/canopus-hq_hqa-inter

1
Changelog
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@ -27,6 +27,7 @@ version <next>:
- Intel QSV-accelerated H.264 encoding
- MMAL-accelerated H.264 decoding
- DTS decoding through libdcadec
- Canopus HQ/HQA decoder
version 11:

2
doc/general.texi
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@ -227,6 +227,8 @@ library:
@item Delphine Software International CIN @tab @tab X
@tab Multimedia format used by Delphine Software games.
@item Digital Speech Standard (DSS) @tab @tab X
@item Canopus HQ @tab @tab X
@item Canopus HQA @tab @tab X
@item Canopus HQX @tab @tab X
@item CD+G @tab @tab X
@tab Video format used by CD+G karaoke disks

2
libavcodec/Makefile
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@ -232,6 +232,8 @@ OBJS-$(CONFIG_HEVC_DECODER) += hevc.o hevc_mvs.o hevc_ps.o hevc_sei.o
hevc_cabac.o hevc_refs.o hevcpred.o \
hevcdsp.o hevc_filter.o
OBJS-$(CONFIG_HNM4_VIDEO_DECODER) += hnm4video.o
OBJS-$(CONFIG_HQ_HQA_DECODER) += hq_hqa.o hq_hqadata.o hq_hqadsp.o \
canopus.o
OBJS-$(CONFIG_HQX_DECODER) += hqx.o hqxvlc.o hqxdsp.o canopus.o
OBJS-$(CONFIG_HUFFYUV_DECODER) += huffyuv.o huffyuvdec.o
OBJS-$(CONFIG_HUFFYUV_ENCODER) += huffyuv.o huffyuvenc.o

1
libavcodec/allcodecs.c
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@ -166,6 +166,7 @@ void avcodec_register_all(void)
REGISTER_DECODER(H264_QSV, h264_qsv);
REGISTER_DECODER(HEVC, hevc);
REGISTER_DECODER(HNM4_VIDEO, hnm4_video);
REGISTER_DECODER(HQ_HQA, hq_hqa);
REGISTER_DECODER(HQX, hqx);
REGISTER_ENCDEC (HUFFYUV, huffyuv);
REGISTER_DECODER(IDCIN, idcin);

1
libavcodec/avcodec.h
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@ -295,6 +295,7 @@ enum AVCodecID {
AV_CODEC_ID_MVC2,
AV_CODEC_ID_HQX,
AV_CODEC_ID_TDSC,
AV_CODEC_ID_HQ_HQA,
/* various PCM "codecs" */
AV_CODEC_ID_FIRST_AUDIO = 0x10000, ///< A dummy id pointing at the start of audio codecs

7
libavcodec/codec_desc.c
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@ -1141,6 +1141,13 @@ static const AVCodecDescriptor codec_descriptors[] = {
.long_name = NULL_IF_CONFIG_SMALL("Canopus HQX"),
.props = AV_CODEC_PROP_INTRA_ONLY | AV_CODEC_PROP_LOSSY,
},
{
.id = AV_CODEC_ID_HQ_HQA,
.type = AVMEDIA_TYPE_VIDEO,
.name = "hq_hqa",
.long_name = NULL_IF_CONFIG_SMALL("Canopus HQ/HQA"),
.props = AV_CODEC_PROP_INTRA_ONLY | AV_CODEC_PROP_LOSSY,
},
/* image codecs */
{

384
libavcodec/hq_hqa.c
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@ -0,0 +1,384 @@
/*
* Canopus HQ/HQA decoder
*
* This file is part of Libav.
*
* Libav is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* Libav is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <stdint.h>
#include "libavutil/attributes.h"
#include "libavutil/intreadwrite.h"
#include "avcodec.h"
#include "canopus.h"
#include "internal.h"
#include "hq_hqa.h"
#include "hq_hqadsp.h"
/* HQ/HQA slices are a set of macroblocks belonging to a frame, and
* they usually form a pseudorandom pattern (probably because it is
* nicer to display on partial decode).
*
* For HQA it just happens that each slice is on every 8th macroblock,
* but they can be on any frame width like
* X.......X.
* ......X...
* ....X.....
* ..X.......
* etc.
*
* The original decoder has special handling for edge macroblocks,
* while lavc simply aligns coded_width and coded_height.
*/
static inline void put_blocks(HQContext *c, AVFrame *pic,
int plane, int x, int y, int ilace,
int16_t *block0, int16_t *block1)
{
uint8_t *p = pic->data[plane] + x;
c->hqhqadsp.idct_put(p + y * pic->linesize[plane],
pic->linesize[plane] << ilace, block0);
c->hqhqadsp.idct_put(p + (y + (ilace ? 1 : 8)) * pic->linesize[plane],
pic->linesize[plane] << ilace, block1);
}
static int hq_decode_block(HQContext *c, GetBitContext *gb, int16_t block[64],
int qsel, int is_chroma, int is_hqa)
{
const int32_t *q;
int val, pos = 1;
memset(block, 0, 64 * sizeof(*block));
if (!is_hqa) {
block[0] = get_sbits(gb, 9) << 6;
q = ff_hq_quants[qsel][is_chroma][get_bits(gb, 2)];
} else {
q = ff_hq_quants[qsel][is_chroma][get_bits(gb, 2)];
block[0] = get_sbits(gb, 9) << 6;
}
for (;;) {
val = get_vlc2(gb, c->hq_ac_vlc.table, 9, 2);
pos += ff_hq_ac_skips[val];
if (pos >= 64)
break;
block[ff_zigzag_direct[pos]] = (ff_hq_ac_syms[val] * q[pos]) >> 12;
pos++;
}
return 0;
}
static int hq_decode_mb(HQContext *c, AVFrame *pic,
GetBitContext *gb, int x, int y)
{
int qgroup, flag;
int i, ret;
qgroup = get_bits(gb, 4);
flag = get_bits1(gb);
for (i = 0; i < 8; i++) {
ret = hq_decode_block(c, gb, c->block[i], qgroup, i >= 4, 0);
if (ret < 0)
return ret;
}
put_blocks(c, pic, 0, x, y, flag, c->block[0], c->block[2]);
put_blocks(c, pic, 0, x + 8, y, flag, c->block[1], c->block[3]);
put_blocks(c, pic, 2, x >> 1, y, flag, c->block[4], c->block[5]);
put_blocks(c, pic, 1, x >> 1, y, flag, c->block[6], c->block[7]);
return 0;
}
static int hq_decode_frame(HQContext *ctx, AVFrame *pic,
int prof_num, size_t data_size)
{
const HQProfile *profile;
GetBitContext gb;
const uint8_t *perm, *src = ctx->gbc.buffer;
uint32_t slice_off[21];
int slice, start_off, next_off, i, ret;
if (prof_num >= NUM_HQ_PROFILES) {
profile = &ff_hq_profile[0];
avpriv_request_sample(ctx->avctx, "HQ Profile %d", prof_num);
} else {
profile = &ff_hq_profile[prof_num];
av_log(ctx->avctx, AV_LOG_VERBOSE, "HQ Profile %d\n", prof_num);
}
ctx->avctx->coded_width = FFALIGN(profile->width, 16);
ctx->avctx->coded_height = FFALIGN(profile->height, 16);
ctx->avctx->width = profile->width;
ctx->avctx->height = profile->height;
ctx->avctx->bits_per_raw_sample = 8;
ctx->avctx->pix_fmt = AV_PIX_FMT_YUV422P;
ret = ff_get_buffer(ctx->avctx, pic, 0);
if (ret < 0) {
av_log(ctx->avctx, AV_LOG_ERROR, "Could not allocate buffer.\n");
return ret;
}
/* Offsets are stored from CUV position, so adjust them accordingly. */
for (i = 0; i < profile->num_slices + 1; i++)
slice_off[i] = bytestream2_get_be24(&ctx->gbc) - 4;
next_off = 0;
for (slice = 0; slice < profile->num_slices; slice++) {
start_off = next_off;
next_off = profile->tab_h * (slice + 1) / profile->num_slices;
perm = profile->perm_tab + start_off * profile->tab_w * 2;
if (slice_off[slice] < (profile->num_slices + 1) * 3 ||
slice_off[slice] >= slice_off[slice + 1] ||
slice_off[slice + 1] > data_size) {
av_log(ctx->avctx, AV_LOG_ERROR,
"Invalid slice size %zu.\n", data_size);
break;
}
init_get_bits(&gb, src + slice_off[slice],
(slice_off[slice + 1] - slice_off[slice]) * 8);
for (i = 0; i < (next_off - start_off) * profile->tab_w; i++) {
ret = hq_decode_mb(ctx, pic, &gb, perm[0] * 16, perm[1] * 16);
if (ret < 0) {
av_log(ctx->avctx, AV_LOG_ERROR,
"Error decoding macroblock %d at slice %d.\n", i, slice);
return ret;
}
perm += 2;
}
}
return 0;
}
static int hqa_decode_mb(HQContext *c, AVFrame *pic, int qgroup,
GetBitContext *gb, int x, int y)
{
int flag = 0;
int i, ret, cbp;
cbp = get_vlc2(gb, c->hqa_cbp_vlc.table, 5, 1);
for (i = 0; i < 12; i++)
memset(c->block[i], 0, sizeof(*c->block));
for (i = 0; i < 12; i++)
c->block[i][0] = -128 * (1 << 6);
if (cbp) {
flag = get_bits1(gb);
cbp |= cbp << 4;
if (cbp & 0x3)
cbp |= 0x500;
if (cbp & 0xC)
cbp |= 0xA00;
for (i = 0; i < 12; i++) {
if (!(cbp & (1 << i)))
continue;
ret = hq_decode_block(c, gb, c->block[i], qgroup, i >= 8, 1);
if (ret < 0)
return ret;
}
}
put_blocks(c, pic, 3, x, y, flag, c->block[ 0], c->block[ 2]);
put_blocks(c, pic, 3, x + 8, y, flag, c->block[ 1], c->block[ 3]);
put_blocks(c, pic, 0, x, y, flag, c->block[ 4], c->block[ 6]);
put_blocks(c, pic, 0, x + 8, y, flag, c->block[ 5], c->block[ 7]);
put_blocks(c, pic, 2, x >> 1, y, flag, c->block[ 8], c->block[ 9]);
put_blocks(c, pic, 1, x >> 1, y, flag, c->block[10], c->block[11]);
return 0;
}
static int hqa_decode_slice(HQContext *ctx, AVFrame *pic, GetBitContext *gb,
int quant, int slice_no, int w, int h)
{
int i, j, off;
int ret;
for (i = 0; i < h; i += 16) {
off = (slice_no * 16 + i * 3) & 0x70;
for (j = off; j < w; j += 128) {
ret = hqa_decode_mb(ctx, pic, quant, gb, j, i);
if (ret < 0) {
av_log(ctx->avctx, AV_LOG_ERROR,
"Error decoding macroblock at %dx%d.\n", i, j);
return ret;
}
}
}
return 0;
}
static int hqa_decode_frame(HQContext *ctx, AVFrame *pic, size_t data_size)
{
GetBitContext gb;
const int num_slices = 8;
uint32_t slice_off[9];
int i, slice, ret;
int width, height, quant;
const uint8_t *src = ctx->gbc.buffer;
width = bytestream2_get_be16(&ctx->gbc);
height = bytestream2_get_be16(&ctx->gbc);
ctx->avctx->coded_width = FFALIGN(width, 16);
ctx->avctx->coded_height = FFALIGN(height, 16);
ctx->avctx->width = width;
ctx->avctx->height = height;
ctx->avctx->bits_per_raw_sample = 8;
ctx->avctx->pix_fmt = AV_PIX_FMT_YUVA422P;
av_log(ctx->avctx, AV_LOG_VERBOSE, "HQA Profile\n");
quant = bytestream2_get_be32(&ctx->gbc);
if (quant >= NUM_HQ_QUANTS) {
av_log(ctx->avctx, AV_LOG_ERROR,
"Invalid quantization matrix %d.\n", quant);
return AVERROR_INVALIDDATA;
}
ret = ff_get_buffer(ctx->avctx, pic, 0);
if (ret < 0) {
av_log(ctx->avctx, AV_LOG_ERROR, "Could not allocate buffer.\n");
return ret;
}
/* Offsets are stored from HQA1 position, so adjust them accordingly. */
for (i = 0; i < num_slices + 1; i++)
slice_off[i] = bytestream2_get_be32(&ctx->gbc) - 4;
for (slice = 0; slice < num_slices; slice++) {
if (slice_off[slice] < (num_slices + 1) * 3 ||
slice_off[slice] >= slice_off[slice + 1] ||
slice_off[slice + 1] > data_size) {
av_log(ctx->avctx, AV_LOG_ERROR,
"Invalid slice size %zu.\n", data_size);
break;
}
init_get_bits(&gb, src + slice_off[slice],
(slice_off[slice + 1] - slice_off[slice]) * 8);
ret = hqa_decode_slice(ctx, pic, &gb, quant, slice, width, height);
if (ret < 0)
return ret;
}
return 0;
}
static int hq_hqa_decode_frame(AVCodecContext *avctx, void *data,
int *got_frame, AVPacket *avpkt)
{
HQContext *ctx = avctx->priv_data;
AVFrame *pic = data;
uint32_t info_tag;
unsigned int data_size;
int tag, ret;
bytestream2_init(&ctx->gbc, avpkt->data, avpkt->size);
if (bytestream2_get_bytes_left(&ctx->gbc) < 4 + 4) {
av_log(avctx, AV_LOG_ERROR, "Frame is too small (%d).\n", avpkt->size);
return AVERROR_INVALIDDATA;
}
info_tag = bytestream2_get_le32(&ctx->gbc);
if (info_tag == MKTAG('I', 'N', 'F', 'O')) {
int info_size = bytestream2_get_le32(&ctx->gbc);
if (bytestream2_get_bytes_left(&ctx->gbc) < info_size) {
av_log(avctx, AV_LOG_ERROR, "Invalid INFO size (%d).\n", info_size);
return AVERROR_INVALIDDATA;
}
ff_canopus_parse_info_tag(avctx, ctx->gbc.buffer, info_size);
bytestream2_skip(&ctx->gbc, info_size);
}
data_size = bytestream2_get_bytes_left(&ctx->gbc);
if (data_size < 4) {
av_log(avctx, AV_LOG_ERROR, "Frame is too small (%d).\n", data_size);
return AVERROR_INVALIDDATA;
}
/* HQ defines dimensions and number of slices, and thus slice traversal
* order. HQA has no size constraint and a fixed number of slices, so it
* needs a separate scheme for it. */
tag = bytestream2_get_le32(&ctx->gbc);
if ((tag & 0x00FFFFFF) == (MKTAG('U', 'V', 'C', ' ') & 0x00FFFFFF)) {
ret = hq_decode_frame(ctx, pic, tag >> 24, data_size);
} else if (tag == MKTAG('H', 'Q', 'A', '1')) {
ret = hqa_decode_frame(ctx, pic, data_size);
} else {
av_log(avctx, AV_LOG_ERROR, "Not a HQ/HQA frame.\n");
return AVERROR_INVALIDDATA;
}
if (ret < 0) {
av_log(avctx, AV_LOG_ERROR, "Error decoding frame.\n");
return ret;
}
pic->key_frame = 1;
pic->pict_type = AV_PICTURE_TYPE_I;
*got_frame = 1;
return avpkt->size;
}
static av_cold int hq_hqa_decode_init(AVCodecContext *avctx)
{
HQContext *ctx = avctx->priv_data;
ctx->avctx = avctx;
ff_hqdsp_init(&ctx->hqhqadsp);
return ff_hq_init_vlcs(ctx);
}
static av_cold int hq_hqa_decode_close(AVCodecContext *avctx)
{
HQContext *ctx = avctx->priv_data;
ff_free_vlc(&ctx->hq_ac_vlc);
ff_free_vlc(&ctx->hqa_cbp_vlc);
return 0;
}
AVCodec ff_hq_hqa_decoder = {
.name = "hq_hqa",
.long_name = NULL_IF_CONFIG_SMALL("Canopus HQ/HQA"),
.type = AVMEDIA_TYPE_VIDEO,
.id = AV_CODEC_ID_HQ_HQA,
.priv_data_size = sizeof(HQContext),
.init = hq_hqa_decode_init,
.decode = hq_hqa_decode_frame,
.close = hq_hqa_decode_close,
.capabilities = CODEC_CAP_DR1,
.caps_internal = FF_CODEC_CAP_INIT_THREADSAFE |
FF_CODEC_CAP_INIT_CLEANUP,
};

60
libavcodec/hq_hqa.h
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@ -0,0 +1,60 @@
/*
* Canopus HQ/HQA decoder
*
* This file is part of Libav.
*
* Libav is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* Libav is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef AVCODEC_HQ_HQA_H
#define AVCODEC_HQ_HQA_H
#include <stdint.h>
#include "avcodec.h"
#include "get_bits.h"
#include "bytestream.h"
#include "hq_hqadsp.h"
#define NUM_HQ_AC_ENTRIES 746
#define NUM_HQ_PROFILES 22
#define NUM_HQ_QUANTS 16
typedef struct HQContext {
AVCodecContext *avctx;
HQDSPContext hqhqadsp;
GetByteContext gbc;
VLC hq_ac_vlc;
VLC hqa_cbp_vlc;
DECLARE_ALIGNED(16, int16_t, block)[12][64];
} HQContext;
typedef struct HQProfile {
const uint8_t *perm_tab;
int width, height;
int num_slices;
int tab_w, tab_h;
} HQProfile;
extern const int32_t * const ff_hq_quants[16][2][4];
extern const HQProfile ff_hq_profile[NUM_HQ_PROFILES];
extern const uint8_t ff_hq_ac_skips[NUM_HQ_AC_ENTRIES];
extern const int16_t ff_hq_ac_syms [NUM_HQ_AC_ENTRIES];
int ff_hq_init_vlcs(HQContext *c);
#endif /* AVCODEC_HQ_HQA_H */

8376
libavcodec/hq_hqadata.c
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130
libavcodec/hq_hqadsp.c
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@ -0,0 +1,130 @@
/*
* Canopus HQ/HQA decoder
*
* This file is part of Libav.
*
* Libav is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* Libav is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <stdint.h>
#include "libavutil/attributes.h"
#include "libavutil/common.h"
#include "hq_hqadsp.h"
#define FIX_1_082 17734
#define FIX_1_847 30274
#define FIX_1_414 23170
#define FIX_2_613 21407 // divided by two to fit the range
#define IDCTMUL(a, b) ((a) * (b) >> 16)
static inline void idct_row(int16_t *blk)
{
int tmp0, tmp1, tmp2, tmp3, tmp4, tmp5, tmp6, tmp7, tmp8, tmp9, tmpA;
int tmpB, tmpC, tmpD, tmpE, tmpF, tmp10, tmp11, tmp12, tmp13, tmp14;
tmp0 = blk[5] - blk[3];
tmp1 = blk[5] + blk[3];
tmp2 = blk[1] - blk[7];
tmp3 = blk[1] + blk[7];
tmp4 = tmp3 - tmp1;
tmp5 = IDCTMUL(tmp0 + tmp2, FIX_1_847);
tmp6 = IDCTMUL(tmp2, FIX_1_082) - tmp5;
tmp7 = tmp5 - IDCTMUL(tmp0, FIX_2_613) * 2;
tmp8 = tmp3 + tmp1;
tmp9 = tmp7 * 4 - tmp8;
tmpA = IDCTMUL(tmp4, FIX_1_414) * 4 - tmp9;
tmpB = tmp6 * 4 + tmpA;
tmpC = blk[2] + blk[6];
tmpD = blk[2] - blk[6];
tmpE = blk[0] - blk[4];
tmpF = blk[0] + blk[4];
tmp10 = IDCTMUL(tmpD, FIX_1_414) * 4 - tmpC;
tmp11 = tmpE - tmp10;
tmp12 = tmpF - tmpC;
tmp13 = tmpE + tmp10;
tmp14 = tmpF + tmpC;
blk[0] = tmp14 + tmp8;
blk[1] = tmp13 + tmp9;
blk[2] = tmp11 + tmpA;
blk[3] = tmp12 - tmpB;
blk[4] = tmp12 + tmpB;
blk[5] = tmp11 - tmpA;
blk[6] = tmp13 - tmp9;
blk[7] = tmp14 - tmp8;
}
static inline void idct_col(int16_t *blk)
{
int tmp0, tmp1, tmp2, tmp3, tmp4, tmp5, tmp6, tmp7, tmp8, tmp9, tmpA;
int tmpB, tmpC, tmpD, tmpE, tmpF, tmp10, tmp11, tmp12, tmp13, tmp14;
tmp0 = blk[5 * 8] - blk[3 * 8];
tmp1 = blk[5 * 8] + blk[3 * 8];
tmp2 = blk[1 * 8] * 2 - (blk[7 * 8] >> 2);
tmp3 = blk[1 * 8] * 2 + (blk[7 * 8] >> 2);
tmp4 = tmp3 - tmp1;
tmp5 = IDCTMUL(tmp0 + tmp2, FIX_1_847);
tmp6 = IDCTMUL(tmp2, FIX_1_082) - tmp5;
tmp7 = tmp5 - IDCTMUL(tmp0, FIX_2_613) * 2;
tmp8 = (tmp3 + tmp1) >> 1;
tmp9 = tmp7 * 2 - tmp8;
tmpA = IDCTMUL(tmp4, FIX_1_414) * 2 - tmp9;
tmpB = tmp6 * 2 + tmpA;
tmpC = blk[2 * 8] + (blk[6 * 8] >> 1) >> 1;
tmpD = blk[2 * 8] - (blk[6 * 8] >> 1);
tmpE = (blk[0 * 8] >> 1) - (blk[4 * 8] >> 1) + 0x2020;
tmpF = (blk[0 * 8] >> 1) + (blk[4 * 8] >> 1) + 0x2020;
tmp10 = IDCTMUL(tmpD, FIX_1_414) * 2 - tmpC;
tmp11 = tmpE - tmp10;
tmp12 = tmpF - tmpC;
tmp13 = tmpE + tmp10;
tmp14 = tmpF + tmpC;
blk[0 * 8] = (tmp14 + tmp8) >> 6;
blk[1 * 8] = (tmp13 + tmp9) >> 6;
blk[2 * 8] = (tmp11 + tmpA) >> 6;
blk[3 * 8] = (tmp12 - tmpB) >> 6;
blk[4 * 8] = (tmp12 + tmpB) >> 6;
blk[5 * 8] = (tmp11 - tmpA) >> 6;
blk[6 * 8] = (tmp13 - tmp9) >> 6;
blk[7 * 8] = (tmp14 - tmp8) >> 6;
}
static void hq_idct_put(uint8_t *dst, int stride, int16_t *block)
{
int i, j;
for (i = 0; i < 8; i++)
idct_row(block + i * 8);
for (i = 0; i < 8; i++)
idct_col(block + i);
for (i = 0; i < 8; i++) {
for (j = 0; j < 8; j++)
dst[j] = av_clip_uint8(block[j + i * 8]);
dst += stride;
}
}
av_cold void ff_hqdsp_init(HQDSPContext *c)
{
c->idct_put = hq_idct_put;
}

38
libavcodec/hq_hqadsp.h
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@ -0,0 +1,38 @@
/*
* Canopus HQ/HQA decoder
*
* This file is part of Libav.
*
* Libav is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* Libav is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
* @file
* HQ/HQA variant of AAN IDCT
* It differs from the standard AAN IDCT in precision and in the second stage.
*/
#ifndef AVCODEC_HQ_HQADSP_H
#define AVCODEC_HQ_HQADSP_H
#include <stdint.h>
typedef struct HQDSPContext {
void (*idct_put)(uint8_t *dst, int stride, int16_t *block);
} HQDSPContext;
void ff_hqdsp_init(HQDSPContext *c);
#endif /* AVCODEC_HQ_HQADSP_H */

2
libavcodec/version.h
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@ -29,7 +29,7 @@
#include "libavutil/version.h"
#define LIBAVCODEC_VERSION_MAJOR 56
#define LIBAVCODEC_VERSION_MINOR 22
#define LIBAVCODEC_VERSION_MINOR 23
#define LIBAVCODEC_VERSION_MICRO 0
#define LIBAVCODEC_VERSION_INT AV_VERSION_INT(LIBAVCODEC_VERSION_MAJOR, \

1
libavformat/riff.c
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@ -352,6 +352,7 @@ const AVCodecTag ff_codec_bmp_tags[] = {
{ AV_CODEC_ID_FIC, MKTAG('F', 'I', 'C', 'V') },
{ AV_CODEC_ID_HQX, MKTAG('C', 'H', 'Q', 'X') },
{ AV_CODEC_ID_TDSC, MKTAG('T', 'D', 'S', 'C') },
{ AV_CODEC_ID_HQ_HQA, MKTAG('C', 'U', 'V', 'C') },
{ AV_CODEC_ID_NONE, 0 }
};

12
tests/fate/video.mak
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@ -55,6 +55,18 @@ fate-bink-video: $(FATE_BINK_VIDEO)
FATE_SAMPLES_AVCONV-$(call DEMDEC, BMV, BMV_VIDEO) += fate-bmv-video
fate-bmv-video: CMD = framecrc -i $(TARGET_SAMPLES)/bmv/SURFING-partial.BMV -pix_fmt rgb24 -an
FATE_CANOPUS_HQ_HQA += fate-canopus-hq_hqa-hq
fate-canopus-hq_hqa-hq: CMD = framecrc -i $(TARGET_SAMPLES)/canopus/hq.avi
FATE_CANOPUS_HQ_HQA += fate-canopus-hq_hqa-hqa
fate-canopus-hq_hqa-hqa: CMD = framecrc -i $(TARGET_SAMPLES)/canopus/hqa.avi
FATE_CANOPUS_HQ_HQA += fate-canopus-hq_hqa-inter
fate-canopus-hq_hqa-inter: CMD = framecrc -i $(TARGET_SAMPLES)/canopus/hq25i.avi
FATE_SAMPLES_AVCONV-$(call DEMDEC, AVI, HQ_HQA) += $(FATE_CANOPUS_HQ_HQA)
fate-canopus-hq_hqa: $(FATE_CANOPUS_HQ_HQA)
FATE_CANOPUS_HQX += fate-canopus-hqx422
fate-canopus-hqx422: CMD = framecrc -i $(TARGET_SAMPLES)/canopus/hqx422.avi -pix_fmt yuv422p16be -an

9
tests/ref/fate/canopus-hq_hqa-hq
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@ -0,0 +1,9 @@
#tb 0: 1/25
0, 0, 0, 1, 829440, 0x8b6b2f6d
0, 1, 1, 1, 829440, 0x70382bf0
0, 2, 2, 1, 829440, 0xbfdf1f8d
0, 3, 3, 1, 829440, 0x27587282
0, 4, 4, 1, 829440, 0x54655f5d
0, 5, 5, 1, 829440, 0xe31bff92
0, 6, 6, 1, 829440, 0x10ec4a8b
0, 7, 7, 1, 829440, 0x0a5773e7

2
tests/ref/fate/canopus-hq_hqa-hqa
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@ -0,0 +1,2 @@
#tb 0: 1/25
0, 0, 0, 1, 6220800, 0x2b2b17cc

2
tests/ref/fate/canopus-hq_hqa-inter
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@ -0,0 +1,2 @@
#tb 0: 1/25
0, 0, 0, 1, 4147200, 0x418ecfe5
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