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https://gitee.com/openharmony/third_party_ffmpeg
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Canopus HQX decoder
Based on work by Kostya Shishkov <kostya.shishkov@gmail.com>.
This commit is contained in:
Vittorio Giovara
parent
36a6fb989b
commit
35c6ce76b1
@ -19,6 +19,7 @@ version <next>:
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- RTP depacketizer for AC3 payload format (RFC 4184)
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- RTP depacketizer for loss tolerant payload format for MP3 audio (RFC 5219)
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- RTP depacketizer for DV (RFC 6469)
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- Canopus HQX decoder
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version 11:
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@ -222,6 +222,7 @@ library:
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@item Delphine Software International CIN @tab @tab X
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@tab Multimedia format used by Delphine Software games.
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@item Digital Speech Standard (DSS) @tab @tab X
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@item Canopus HQX @tab @tab X
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@item CD+G @tab @tab X
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@tab Video format used by CD+G karaoke disks
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@item Commodore CDXL @tab @tab X
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@ -227,6 +227,7 @@ OBJS-$(CONFIG_HEVC_DECODER) += hevc.o hevc_mvs.o hevc_ps.o hevc_sei.o
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hevc_cabac.o hevc_refs.o hevcpred.o \
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hevcdsp.o hevc_filter.o
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OBJS-$(CONFIG_HNM4_VIDEO_DECODER) += hnm4video.o
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OBJS-$(CONFIG_HQX_DECODER) += hqx.o hqxvlc.o
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OBJS-$(CONFIG_HUFFYUV_DECODER) += huffyuv.o huffyuvdec.o
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OBJS-$(CONFIG_HUFFYUV_ENCODER) += huffyuv.o huffyuvenc.o
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OBJS-$(CONFIG_IDCIN_DECODER) += idcinvideo.o
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@ -164,6 +164,7 @@ void avcodec_register_all(void)
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REGISTER_DECODER(H264_QSV, h264_qsv);
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REGISTER_DECODER(HEVC, hevc);
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REGISTER_DECODER(HNM4_VIDEO, hnm4_video);
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REGISTER_DECODER(HQX, hqx);
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REGISTER_ENCDEC (HUFFYUV, huffyuv);
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REGISTER_DECODER(IDCIN, idcin);
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REGISTER_DECODER(IFF_BYTERUN1, iff_byterun1);
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@ -293,6 +293,7 @@ enum AVCodecID {
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AV_CODEC_ID_SGIRLE,
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AV_CODEC_ID_MVC1,
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AV_CODEC_ID_MVC2,
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AV_CODEC_ID_HQX,
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/* various PCM "codecs" */
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AV_CODEC_ID_FIRST_AUDIO = 0x10000, ///< A dummy id pointing at the start of audio codecs
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@ -1134,6 +1134,13 @@ static const AVCodecDescriptor codec_descriptors[] = {
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.long_name = NULL_IF_CONFIG_SMALL("SGI RLE 8-bit"),
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.props = AV_CODEC_PROP_INTRA_ONLY | AV_CODEC_PROP_LOSSLESS,
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},
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{
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.id = AV_CODEC_ID_HQX,
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.type = AVMEDIA_TYPE_VIDEO,
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.name = "hqx",
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.long_name = NULL_IF_CONFIG_SMALL("Canopus HQX"),
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.props = AV_CODEC_PROP_INTRA_ONLY | AV_CODEC_PROP_LOSSY,
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},
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/* image codecs */
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{
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645
libavcodec/hqx.c
Normal file
645
libavcodec/hqx.c
Normal file
@ -0,0 +1,645 @@
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/*
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* Canopus HQX decoder
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*
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* This file is part of Libav.
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*
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* Libav is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* Libav is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with Libav; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include <inttypes.h>
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#include "libavutil/imgutils.h"
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#include "libavutil/intreadwrite.h"
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#include "avcodec.h"
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#include "get_bits.h"
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#include "internal.h"
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#include "hqx.h"
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/* HQX has four modes - 422, 444, 422alpha and 444alpha - all 12-bit */
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enum HQXFormat {
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HQX_422 = 0,
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HQX_444,
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HQX_422A,
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HQX_444A,
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};
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#define HQX_HEADER_SIZE 59
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typedef int (*mb_decode_func)(HQXContext *ctx, AVFrame *pic,
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GetBitContext *gb, int x, int y);
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/* macroblock selects a group of 4 possible quants and
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* a block can use any of those four quantisers
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* one column is powers of 2, the other one is powers of 2 * 3,
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* then there is the special one, powers of 2 * 5 */
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static const int hqx_quants[16][4] = {
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{ 0x1, 0x2, 0x4, 0x8 }, { 0x1, 0x3, 0x6, 0xC },
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{ 0x2, 0x4, 0x8, 0x10 }, { 0x3, 0x6, 0xC, 0x18 },
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{ 0x4, 0x8, 0x10, 0x20 }, { 0x6, 0xC, 0x18, 0x30 },
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{ 0x8, 0x10, 0x20, 0x40 },
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{ 0xA, 0x14, 0x28, 0x50 },
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{ 0xC, 0x18, 0x30, 0x60 },
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{ 0x10, 0x20, 0x40, 0x80 }, { 0x18, 0x30, 0x60, 0xC0 },
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{ 0x20, 0x40, 0x80, 0x100 }, { 0x30, 0x60, 0xC0, 0x180 },
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{ 0x40, 0x80, 0x100, 0x200 }, { 0x60, 0xC0, 0x180, 0x300 },
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{ 0x80, 0x100, 0x200, 0x400 }
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};
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static const uint8_t hqx_quant_luma[64] = {
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16, 16, 16, 19, 19, 19, 42, 44,
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16, 16, 19, 19, 19, 38, 43, 45,
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16, 19, 19, 19, 40, 41, 45, 48,
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19, 19, 19, 40, 41, 42, 46, 49,
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19, 19, 40, 41, 42, 43, 48, 101,
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19, 38, 41, 42, 43, 44, 98, 104,
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42, 43, 45, 46, 48, 98, 109, 116,
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44, 45, 48, 49, 101, 104, 116, 123,
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};
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static const uint8_t hqx_quant_chroma[64] = {
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16, 16, 19, 25, 26, 26, 42, 44,
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16, 19, 25, 25, 26, 38, 43, 91,
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19, 25, 26, 27, 40, 41, 91, 96,
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25, 25, 27, 40, 41, 84, 93, 197,
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26, 26, 40, 41, 84, 86, 191, 203,
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26, 38, 41, 84, 86, 177, 197, 209,
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42, 43, 91, 93, 191, 197, 219, 232,
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44, 91, 96, 197, 203, 209, 232, 246,
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};
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static inline void idct_col(int16_t *blk, const uint8_t *quant)
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{
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int t0, t1, t2, t3, t4, t5, t6, t7, t8, t9, tA, tB, tC, tD, tE, tF;
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int t10, t11, t12, t13;
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int s0, s1, s2, s3, s4, s5, s6, s7;
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s0 = (int) blk[0 * 8] * quant[0 * 8];
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s1 = (int) blk[1 * 8] * quant[1 * 8];
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s2 = (int) blk[2 * 8] * quant[2 * 8];
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s3 = (int) blk[3 * 8] * quant[3 * 8];
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s4 = (int) blk[4 * 8] * quant[4 * 8];
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s5 = (int) blk[5 * 8] * quant[5 * 8];
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s6 = (int) blk[6 * 8] * quant[6 * 8];
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s7 = (int) blk[7 * 8] * quant[7 * 8];
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t0 = (s3 * 19266 + s5 * 12873) >> 15;
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t1 = (s5 * 19266 - s3 * 12873) >> 15;
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t2 = ((s7 * 4520 + s1 * 22725) >> 15) - t0;
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t3 = ((s1 * 4520 - s7 * 22725) >> 15) - t1;
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t4 = t0 * 2 + t2;
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t5 = t1 * 2 + t3;
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t6 = t2 - t3;
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t7 = t3 * 2 + t6;
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t8 = (t6 * 11585) >> 14;
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t9 = (t7 * 11585) >> 14;
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tA = (s2 * 8867 - s6 * 21407) >> 14;
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tB = (s6 * 8867 + s2 * 21407) >> 14;
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tC = (s0 >> 1) - (s4 >> 1);
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tD = (s4 >> 1) * 2 + tC;
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tE = tC - (tA >> 1);
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tF = tD - (tB >> 1);
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t10 = tF - t5;
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t11 = tE - t8;
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t12 = tE + (tA >> 1) * 2 - t9;
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t13 = tF + (tB >> 1) * 2 - t4;
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blk[0 * 8] = t13 + t4 * 2;
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blk[1 * 8] = t12 + t9 * 2;
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blk[2 * 8] = t11 + t8 * 2;
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blk[3 * 8] = t10 + t5 * 2;
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blk[4 * 8] = t10;
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blk[5 * 8] = t11;
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blk[6 * 8] = t12;
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blk[7 * 8] = t13;
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}
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static inline void idct_row(int16_t *blk)
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{
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int t0, t1, t2, t3, t4, t5, t6, t7, t8, t9, tA, tB, tC, tD, tE, tF;
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int t10, t11, t12, t13;
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t0 = (blk[3] * 19266 + blk[5] * 12873) >> 14;
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t1 = (blk[5] * 19266 - blk[3] * 12873) >> 14;
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t2 = ((blk[7] * 4520 + blk[1] * 22725) >> 14) - t0;
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t3 = ((blk[1] * 4520 - blk[7] * 22725) >> 14) - t1;
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t4 = t0 * 2 + t2;
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t5 = t1 * 2 + t3;
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t6 = t2 - t3;
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t7 = t3 * 2 + t6;
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t8 = (t6 * 11585) >> 14;
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t9 = (t7 * 11585) >> 14;
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tA = (blk[2] * 8867 - blk[6] * 21407) >> 14;
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tB = (blk[6] * 8867 + blk[2] * 21407) >> 14;
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tC = blk[0] - blk[4];
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tD = blk[4] * 2 + tC;
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tE = tC - tA;
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tF = tD - tB;
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t10 = tF - t5;
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t11 = tE - t8;
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t12 = tE + tA * 2 - t9;
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t13 = tF + tB * 2 - t4;
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blk[0] = (t13 + t4 * 2 + 4) >> 3;
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blk[1] = (t12 + t9 * 2 + 4) >> 3;
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blk[2] = (t11 + t8 * 2 + 4) >> 3;
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blk[3] = (t10 + t5 * 2 + 4) >> 3;
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blk[4] = (t10 + 4) >> 3;
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blk[5] = (t11 + 4) >> 3;
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blk[6] = (t12 + 4) >> 3;
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blk[7] = (t13 + 4) >> 3;
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}
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static void hqx_idct(int16_t *block, const uint8_t *quant)
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{
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int i;
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for (i = 0; i < 8; i++)
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idct_col(block + i, quant + i);
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for (i = 0; i < 8; i++)
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idct_row(block + i * 8);
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}
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static void hqx_idct_put(uint16_t *dst, ptrdiff_t stride,
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int16_t *block, const uint8_t *quant)
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{
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int i, j;
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hqx_idct(block, quant);
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for (i = 0; i < 8; i++) {
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for (j = 0; j < 8; j++) {
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int v = av_clip(block[j + i * 8] + 0x800, 0, 0x1000);
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dst[j] = (v << 4) | (v >> 8);
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}
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dst += stride >> 1;
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}
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}
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static inline void put_blocks(AVFrame *pic, int plane,
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int x, int y, int ilace,
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int16_t *block0, int16_t *block1,
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const uint8_t *quant)
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{
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int fields = ilace ? 2 : 1;
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int lsize = pic->linesize[plane];
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uint8_t *p = pic->data[plane] + x * 2;
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hqx_idct_put((uint16_t *)(p + y * lsize), lsize * fields, block0, quant);
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hqx_idct_put((uint16_t *)(p + (y + (ilace ? 1 : 8)) * lsize),
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lsize * fields, block1, quant);
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}
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static inline void hqx_get_ac(GetBitContext *gb, const HQXAC *ac,
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int *run, int *lev)
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{
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int val;
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val = show_bits(gb, ac->lut_bits);
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if (ac->lut[val].bits == -1) {
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GetBitContext gb2 = *gb;
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skip_bits(&gb2, ac->lut_bits);
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val = ac->lut[val].lev + show_bits(&gb2, ac->extra_bits);
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}
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*run = ac->lut[val].run;
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*lev = ac->lut[val].lev;
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skip_bits(gb, ac->lut[val].bits);
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}
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static int decode_block(GetBitContext *gb, VLC *vlc,
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const int *quants, int dcb,
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int16_t block[64], int *last_dc)
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{
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int q, dc;
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int ac_idx;
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int run, lev, pos = 1;
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memset(block, 0, 64 * sizeof(*block));
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dc = get_vlc2(gb, vlc->table, HQX_DC_VLC_BITS, 2);
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if (dc < 0)
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return AVERROR_INVALIDDATA;
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*last_dc += dc;
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block[0] = sign_extend(*last_dc << (12 - dcb), 12);
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q = quants[get_bits(gb, 2)];
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if (q >= 128)
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ac_idx = HQX_AC_Q128;
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else if (q >= 64)
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ac_idx = HQX_AC_Q64;
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else if (q >= 32)
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ac_idx = HQX_AC_Q32;
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else if (q >= 16)
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ac_idx = HQX_AC_Q16;
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else if (q >= 8)
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ac_idx = HQX_AC_Q8;
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else
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ac_idx = HQX_AC_Q0;
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do {
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hqx_get_ac(gb, &ff_hqx_ac[ac_idx], &run, &lev);
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pos += run;
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if (pos >= 64)
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break;
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block[ff_zigzag_direct[pos++]] = lev * q;
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} while (pos < 64);
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return 0;
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}
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static int hqx_decode_422(HQXContext *ctx, AVFrame *pic,
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GetBitContext *gb, int x, int y)
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{
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const int *quants;
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int flag;
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int last_dc;
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int i, ret;
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if (ctx->interlaced)
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flag = get_bits1(gb);
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else
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flag = 0;
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quants = hqx_quants[get_bits(gb, 4)];
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for (i = 0; i < 8; i++) {
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int vlc_index = ctx->dcb - 9;
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if (i == 0 || i == 4 || i == 6)
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last_dc = 0;
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ret = decode_block(gb, &ctx->dc_vlc[vlc_index], quants,
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ctx->dcb, ctx->block[i], &last_dc);
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if (ret < 0)
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return ret;
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}
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put_blocks(pic, 0, x, y, flag, ctx->block[0], ctx->block[2], hqx_quant_luma);
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put_blocks(pic, 0, x + 8, y, flag, ctx->block[1], ctx->block[3], hqx_quant_luma);
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put_blocks(pic, 2, x >> 1, y, flag, ctx->block[4], ctx->block[5], hqx_quant_chroma);
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put_blocks(pic, 1, x >> 1, y, flag, ctx->block[6], ctx->block[7], hqx_quant_chroma);
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return 0;
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}
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static int hqx_decode_422a(HQXContext *ctx, AVFrame *pic,
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GetBitContext *gb, int x, int y)
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{
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const int *quants;
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int flag = 0;
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int last_dc;
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int i, ret;
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int cbp;
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cbp = get_vlc2(gb, ctx->cbp_vlc.table, ctx->cbp_vlc.bits, 1);
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for (i = 0; i < 12; i++)
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memset(ctx->block[i], 0, sizeof(**ctx->block) * 64);
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for (i = 0; i < 12; i++)
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ctx->block[i][0] = -0x800;
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if (cbp) {
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if (ctx->interlaced)
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flag = get_bits1(gb);
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quants = hqx_quants[get_bits(gb, 4)];
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cbp |= cbp << 4; // alpha CBP
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if (cbp & 0x3) // chroma CBP - top
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cbp |= 0x500;
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if (cbp & 0xC) // chroma CBP - bottom
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cbp |= 0xA00;
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for (i = 0; i < 12; i++) {
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if (i == 0 || i == 4 || i == 8 || i == 10)
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last_dc = 0;
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if (cbp & (1 << i)) {
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int vlc_index = ctx->dcb - 9;
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ret = decode_block(gb, &ctx->dc_vlc[vlc_index], quants,
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ctx->dcb, ctx->block[i], &last_dc);
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if (ret < 0)
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return ret;
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}
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}
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}
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put_blocks(pic, 3, x, y, flag, ctx->block[ 0], ctx->block[ 2], hqx_quant_luma);
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put_blocks(pic, 3, x + 8, y, flag, ctx->block[ 1], ctx->block[ 3], hqx_quant_luma);
|
||||
put_blocks(pic, 0, x, y, flag, ctx->block[ 4], ctx->block[ 6], hqx_quant_luma);
|
||||
put_blocks(pic, 0, x + 8, y, flag, ctx->block[ 5], ctx->block[ 7], hqx_quant_luma);
|
||||
put_blocks(pic, 2, x >> 1, y, flag, ctx->block[ 8], ctx->block[ 9], hqx_quant_chroma);
|
||||
put_blocks(pic, 1, x >> 1, y, flag, ctx->block[10], ctx->block[11], hqx_quant_chroma);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int hqx_decode_444(HQXContext *ctx, AVFrame *pic,
|
||||
GetBitContext *gb, int x, int y)
|
||||
{
|
||||
const int *quants;
|
||||
int flag;
|
||||
int last_dc;
|
||||
int i, ret;
|
||||
|
||||
if (ctx->interlaced)
|
||||
flag = get_bits1(gb);
|
||||
else
|
||||
flag = 0;
|
||||
|
||||
quants = hqx_quants[get_bits(gb, 4)];
|
||||
|
||||
for (i = 0; i < 12; i++) {
|
||||
int vlc_index = ctx->dcb - 9;
|
||||
if (i == 0 || i == 4 || i == 8)
|
||||
last_dc = 0;
|
||||
ret = decode_block(gb, &ctx->dc_vlc[vlc_index], quants,
|
||||
ctx->dcb, ctx->block[i], &last_dc);
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
}
|
||||
|
||||
put_blocks(pic, 0, x, y, flag, ctx->block[0], ctx->block[ 2], hqx_quant_luma);
|
||||
put_blocks(pic, 0, x + 8, y, flag, ctx->block[1], ctx->block[ 3], hqx_quant_luma);
|
||||
put_blocks(pic, 2, x, y, flag, ctx->block[4], ctx->block[ 6], hqx_quant_chroma);
|
||||
put_blocks(pic, 2, x + 8, y, flag, ctx->block[5], ctx->block[ 7], hqx_quant_chroma);
|
||||
put_blocks(pic, 1, x, y, flag, ctx->block[8], ctx->block[10], hqx_quant_chroma);
|
||||
put_blocks(pic, 1, x + 8, y, flag, ctx->block[9], ctx->block[11], hqx_quant_chroma);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int hqx_decode_444a(HQXContext *ctx, AVFrame *pic,
|
||||
GetBitContext *gb, int x, int y)
|
||||
{
|
||||
const int *quants;
|
||||
int flag = 0;
|
||||
int last_dc;
|
||||
int i, ret;
|
||||
int cbp;
|
||||
|
||||
cbp = get_vlc2(gb, ctx->cbp_vlc.table, ctx->cbp_vlc.bits, 1);
|
||||
|
||||
for (i = 0; i < 16; i++)
|
||||
memset(ctx->block[i], 0, sizeof(**ctx->block) * 64);
|
||||
for (i = 0; i < 16; i++)
|
||||
ctx->block[i][0] = -0x800;
|
||||
if (cbp) {
|
||||
if (ctx->interlaced)
|
||||
flag = get_bits1(gb);
|
||||
|
||||
quants = hqx_quants[get_bits(gb, 4)];
|
||||
|
||||
cbp |= cbp << 4; // alpha CBP
|
||||
cbp |= cbp << 8; // chroma CBP
|
||||
for (i = 0; i < 16; i++) {
|
||||
if (i == 0 || i == 4 || i == 8 || i == 12)
|
||||
last_dc = 0;
|
||||
if (cbp & (1 << i)) {
|
||||
int vlc_index = ctx->dcb - 9;
|
||||
ret = decode_block(gb, &ctx->dc_vlc[vlc_index], quants,
|
||||
ctx->dcb, ctx->block[i], &last_dc);
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
put_blocks(pic, 3, x, y, flag, ctx->block[ 0], ctx->block[ 2], hqx_quant_luma);
|
||||
put_blocks(pic, 3, x + 8, y, flag, ctx->block[ 1], ctx->block[ 3], hqx_quant_luma);
|
||||
put_blocks(pic, 0, x, y, flag, ctx->block[ 4], ctx->block[ 6], hqx_quant_luma);
|
||||
put_blocks(pic, 0, x + 8, y, flag, ctx->block[ 5], ctx->block[ 7], hqx_quant_luma);
|
||||
put_blocks(pic, 2, x, y, flag, ctx->block[ 8], ctx->block[10], hqx_quant_chroma);
|
||||
put_blocks(pic, 2, x + 8, y, flag, ctx->block[ 9], ctx->block[11], hqx_quant_chroma);
|
||||
put_blocks(pic, 1, x, y, flag, ctx->block[12], ctx->block[14], hqx_quant_chroma);
|
||||
put_blocks(pic, 1, x + 8, y, flag, ctx->block[13], ctx->block[15], hqx_quant_chroma);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static const int shuffle_16[16] = {
|
||||
0, 5, 11, 14, 2, 7, 9, 13, 1, 4, 10, 15, 3, 6, 8, 12
|
||||
};
|
||||
|
||||
static int decode_slice(HQXContext *ctx, AVFrame *pic, GetBitContext *gb,
|
||||
int slice_no, mb_decode_func decode_func)
|
||||
{
|
||||
int mb_w = (ctx->width + 15) >> 4;
|
||||
int mb_h = (ctx->height + 15) >> 4;
|
||||
int grp_w = (mb_w + 4) / 5;
|
||||
int grp_h = (mb_h + 4) / 5;
|
||||
int grp_h_edge = grp_w * (mb_w / grp_w);
|
||||
int grp_v_edge = grp_h * (mb_h / grp_h);
|
||||
int grp_v_rest = mb_w - grp_h_edge;
|
||||
int grp_h_rest = mb_h - grp_v_edge;
|
||||
int num_mbs = mb_w * mb_h;
|
||||
int num_tiles = (num_mbs + 479) / 480;
|
||||
int std_tile_blocks = num_mbs / (16 * num_tiles);
|
||||
int g_tile = slice_no * num_tiles;
|
||||
int blk_addr, loc_addr, mb_x, mb_y, pos, loc_row, i;
|
||||
int tile_blocks, tile_limit, tile_no;
|
||||
|
||||
for (tile_no = 0; tile_no < num_tiles; tile_no++, g_tile++) {
|
||||
tile_blocks = std_tile_blocks;
|
||||
tile_limit = -1;
|
||||
if (g_tile < num_mbs - std_tile_blocks * 16 * num_tiles) {
|
||||
tile_limit = num_mbs / (16 * num_tiles);
|
||||
tile_blocks++;
|
||||
}
|
||||
for (i = 0; i < tile_blocks; i++) {
|
||||
if (i == tile_limit)
|
||||
blk_addr = g_tile + 16 * num_tiles * i;
|
||||
else
|
||||
blk_addr = tile_no + 16 * num_tiles * i +
|
||||
num_tiles * shuffle_16[(i + slice_no) & 0xF];
|
||||
loc_row = grp_h * (blk_addr / (grp_h * mb_w));
|
||||
loc_addr = blk_addr % (grp_h * mb_w);
|
||||
if (loc_row >= grp_v_edge) {
|
||||
mb_x = grp_w * (loc_addr / (grp_h_rest * grp_w));
|
||||
pos = loc_addr % (grp_h_rest * grp_w);
|
||||
} else {
|
||||
mb_x = grp_w * (loc_addr / (grp_h * grp_w));
|
||||
pos = loc_addr % (grp_h * grp_w);
|
||||
}
|
||||
if (mb_x >= grp_h_edge) {
|
||||
mb_x += pos % grp_v_rest;
|
||||
mb_y = loc_row + (pos / grp_v_rest);
|
||||
} else {
|
||||
mb_x += pos % grp_w;
|
||||
mb_y = loc_row + (pos / grp_w);
|
||||
}
|
||||
decode_func(ctx, pic, gb, mb_x * 16, mb_y * 16);
|
||||
}
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int hqx_decode_frame(AVCodecContext *avctx, void *data,
|
||||
int *got_picture_ptr, AVPacket *avpkt)
|
||||
{
|
||||
HQXContext *ctx = avctx->priv_data;
|
||||
AVFrame *pic = data;
|
||||
uint8_t *src = avpkt->data;
|
||||
uint32_t info_tag, info_offset;
|
||||
int data_start;
|
||||
unsigned data_size;
|
||||
GetBitContext gb;
|
||||
int i, ret;
|
||||
int slice;
|
||||
uint32_t slice_off[17];
|
||||
mb_decode_func decode_func = 0;
|
||||
|
||||
if (avpkt->size < 8)
|
||||
return AVERROR_INVALIDDATA;
|
||||
|
||||
/* Skip the INFO header if present */
|
||||
info_offset = 0;
|
||||
info_tag = AV_RL32(src);
|
||||
if (info_tag == MKTAG('I', 'N', 'F', 'O')) {
|
||||
info_offset = AV_RL32(src + 4);
|
||||
if (info_offset > UINT32_MAX - 8 || info_offset + 8 > avpkt->size) {
|
||||
av_log(avctx, AV_LOG_ERROR,
|
||||
"Invalid INFO header offset: 0x%08"PRIX32" is too large.\n",
|
||||
info_offset);
|
||||
return AVERROR_INVALIDDATA;
|
||||
}
|
||||
|
||||
info_offset += 8;
|
||||
src += info_offset;
|
||||
|
||||
av_log(avctx, AV_LOG_DEBUG, "Skipping INFO chunk.\n");
|
||||
}
|
||||
|
||||
data_start = src - avpkt->data;
|
||||
data_size = avpkt->size - data_start;
|
||||
|
||||
if (data_size < HQX_HEADER_SIZE) {
|
||||
av_log(avctx, AV_LOG_ERROR, "Frame too small.\n");
|
||||
return AVERROR_INVALIDDATA;
|
||||
}
|
||||
|
||||
if (src[0] != 'H' || src[1] != 'Q') {
|
||||
av_log(avctx, AV_LOG_ERROR, "Not an HQX frame.\n");
|
||||
return AVERROR_INVALIDDATA;
|
||||
}
|
||||
ctx->interlaced = !(src[2] & 0x80);
|
||||
ctx->format = src[2] & 7;
|
||||
ctx->dcb = (src[3] & 3) + 8;
|
||||
ctx->width = AV_RB16(src + 4);
|
||||
ctx->height = AV_RB16(src + 6);
|
||||
for (i = 0; i < 17; i++)
|
||||
slice_off[i] = AV_RB24(src + 8 + i * 3);
|
||||
|
||||
if (ctx->dcb == 8) {
|
||||
av_log(avctx, AV_LOG_ERROR, "Invalid DC precision %d.\n", ctx->dcb);
|
||||
return AVERROR_INVALIDDATA;
|
||||
}
|
||||
ret = av_image_check_size(ctx->width, ctx->height, 0, avctx);
|
||||
if (ret < 0) {
|
||||
av_log(avctx, AV_LOG_ERROR, "Invalid stored dimenstions %dx%d.\n",
|
||||
ctx->width, ctx->height);
|
||||
return AVERROR_INVALIDDATA;
|
||||
}
|
||||
|
||||
avctx->coded_width = FFALIGN(ctx->width, 16);
|
||||
avctx->coded_height = FFALIGN(ctx->height, 16);
|
||||
avctx->width = ctx->width;
|
||||
avctx->height = ctx->height;
|
||||
avctx->bits_per_raw_sample = 10;
|
||||
|
||||
switch (ctx->format) {
|
||||
case HQX_422:
|
||||
avctx->pix_fmt = AV_PIX_FMT_YUV422P16;
|
||||
decode_func = hqx_decode_422;
|
||||
break;
|
||||
case HQX_444:
|
||||
avctx->pix_fmt = AV_PIX_FMT_YUV444P16;
|
||||
decode_func = hqx_decode_444;
|
||||
break;
|
||||
case HQX_422A:
|
||||
avctx->pix_fmt = AV_PIX_FMT_YUVA422P16;
|
||||
decode_func = hqx_decode_422a;
|
||||
break;
|
||||
case HQX_444A:
|
||||
avctx->pix_fmt = AV_PIX_FMT_YUVA444P16;
|
||||
decode_func = hqx_decode_444a;
|
||||
break;
|
||||
}
|
||||
if (!decode_func) {
|
||||
av_log(avctx, AV_LOG_ERROR, "Invalid format: %d.\n", ctx->format);
|
||||
return AVERROR_INVALIDDATA;
|
||||
}
|
||||
|
||||
ret = ff_get_buffer(avctx, pic, 0);
|
||||
if (ret < 0) {
|
||||
av_log(avctx, AV_LOG_ERROR, "Could not allocate buffer.\n");
|
||||
return ret;
|
||||
}
|
||||
|
||||
for (slice = 0; slice < 16; slice++) {
|
||||
if (slice_off[slice] < HQX_HEADER_SIZE ||
|
||||
slice_off[slice] >= slice_off[slice + 1] ||
|
||||
slice_off[slice + 1] > data_size) {
|
||||
av_log(avctx, AV_LOG_ERROR, "Invalid slice size.\n");
|
||||
break;
|
||||
}
|
||||
ret = init_get_bits(&gb, src + slice_off[slice],
|
||||
(slice_off[slice + 1] - slice_off[slice]) * 8);
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
ret = decode_slice(ctx, pic, &gb, slice, decode_func);
|
||||
if (ret < 0) {
|
||||
av_log(avctx, AV_LOG_ERROR, "Error decoding slice %d.\n", slice);
|
||||
}
|
||||
}
|
||||
|
||||
pic->key_frame = 1;
|
||||
pic->pict_type = AV_PICTURE_TYPE_I;
|
||||
|
||||
*got_picture_ptr = 1;
|
||||
|
||||
return avpkt->size;
|
||||
}
|
||||
|
||||
static av_cold int hqx_decode_close(AVCodecContext *avctx)
|
||||
{
|
||||
int i;
|
||||
HQXContext *ctx = avctx->priv_data;
|
||||
|
||||
ff_free_vlc(&ctx->cbp_vlc);
|
||||
for (i = 0; i < 3; i++) {
|
||||
ff_free_vlc(&ctx->dc_vlc[i]);
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static av_cold int hqx_decode_init(AVCodecContext *avctx)
|
||||
{
|
||||
HQXContext *ctx = avctx->priv_data;
|
||||
int ret = ff_hqx_init_vlcs(ctx);
|
||||
if (ret < 0)
|
||||
hqx_decode_close(avctx);
|
||||
return ret;
|
||||
}
|
||||
|
||||
AVCodec ff_hqx_decoder = {
|
||||
.name = "hqx",
|
||||
.long_name = NULL_IF_CONFIG_SMALL("Canopus HQX"),
|
||||
.type = AVMEDIA_TYPE_VIDEO,
|
||||
.id = AV_CODEC_ID_HQX,
|
||||
.priv_data_size = sizeof(HQXContext),
|
||||
.init = hqx_decode_init,
|
||||
.decode = hqx_decode_frame,
|
||||
.close = hqx_decode_close,
|
||||
.capabilities = CODEC_CAP_DR1,
|
||||
};
|
||||
65
libavcodec/hqx.h
Normal file
65
libavcodec/hqx.h
Normal file
@ -0,0 +1,65 @@
|
||||
/*
|
||||
* Canopus HQX 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_HQX_H
|
||||
#define AVCODEC_HQX_H
|
||||
|
||||
#include <stdint.h>
|
||||
#include "libavutil/mem.h"
|
||||
#include "get_bits.h"
|
||||
|
||||
enum HQXACMode {
|
||||
HQX_AC_Q0 = 0,
|
||||
HQX_AC_Q8,
|
||||
HQX_AC_Q16,
|
||||
HQX_AC_Q32,
|
||||
HQX_AC_Q64,
|
||||
HQX_AC_Q128,
|
||||
NUM_HQX_AC
|
||||
};
|
||||
|
||||
typedef struct HQXLUT {
|
||||
int16_t lev;
|
||||
uint8_t run;
|
||||
int8_t bits;
|
||||
} HQXLUT;
|
||||
|
||||
typedef struct HQXAC {
|
||||
int lut_bits, extra_bits;
|
||||
const HQXLUT *lut;
|
||||
} HQXAC;
|
||||
|
||||
typedef struct HQXContext {
|
||||
int format, dcb, width, height;
|
||||
int interlaced;
|
||||
|
||||
DECLARE_ALIGNED(16, int16_t, block)[16][64];
|
||||
|
||||
VLC cbp_vlc;
|
||||
VLC dc_vlc[3];
|
||||
} HQXContext;
|
||||
|
||||
#define HQX_DC_VLC_BITS 9
|
||||
|
||||
extern const HQXAC ff_hqx_ac[NUM_HQX_AC];
|
||||
|
||||
int ff_hqx_init_vlcs(HQXContext *ctx);
|
||||
|
||||
#endif /* AVCODEC_HQX_H */
|
||||
2167
libavcodec/hqxvlc.c
Normal file
2167
libavcodec/hqxvlc.c
Normal file
File diff suppressed because it is too large
Load Diff
@ -29,7 +29,7 @@
|
||||
#include "libavutil/version.h"
|
||||
|
||||
#define LIBAVCODEC_VERSION_MAJOR 56
|
||||
#define LIBAVCODEC_VERSION_MINOR 16
|
||||
#define LIBAVCODEC_VERSION_MINOR 17
|
||||
#define LIBAVCODEC_VERSION_MICRO 0
|
||||
|
||||
#define LIBAVCODEC_VERSION_INT AV_VERSION_INT(LIBAVCODEC_VERSION_MAJOR, \
|
||||
|
||||
@ -351,6 +351,7 @@ const AVCodecTag ff_codec_bmp_tags[] = {
|
||||
{ AV_CODEC_ID_PRORES, MKTAG('A', 'P', 'C', 'N') },
|
||||
{ AV_CODEC_ID_PRORES, MKTAG('A', 'P', 'C', 'H') },
|
||||
{ AV_CODEC_ID_QTRLE, MKTAG('r', 'l', 'e', ' ') },
|
||||
{ AV_CODEC_ID_HQX, MKTAG('C', 'H', 'Q', 'X') },
|
||||
{ AV_CODEC_ID_NONE, 0 }
|
||||
};
|
||||
|
||||
|
||||
@ -52,6 +52,15 @@ 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_HQX += fate-canopus-hqx422
|
||||
fate-canopus-hqx422: CMD = framecrc -i $(TARGET_SAMPLES)/canopus/hqx422.avi -pix_fmt yuv422p16be -an
|
||||
|
||||
FATE_CANOPUS_HQX += fate-canopus-hqx422a
|
||||
fate-canopus-hqx422a: CMD = framecrc -i $(TARGET_SAMPLES)/canopus/hqx422a.avi -pix_fmt yuv422p16be -an
|
||||
|
||||
FATE_SAMPLES_AVCONV-$(call DEMDEC, AVI, HQX) += $(FATE_CANOPUS_HQX)
|
||||
fate-canopus-hqx: $(FATE_CANOPUS_HQX)
|
||||
|
||||
FATE_SAMPLES_AVCONV-$(call DEMDEC, MPEGPS, CAVS) += fate-cavs
|
||||
fate-cavs: CMD = framecrc -i $(TARGET_SAMPLES)/cavs/cavs.mpg -an
|
||||
|
||||
|
||||
2
tests/ref/fate/canopus-hqx422
Normal file
2
tests/ref/fate/canopus-hqx422
Normal file
@ -0,0 +1,2 @@
|
||||
#tb 0: 1/25
|
||||
0, 0, 0, 1, 1658880, 0x823fcbac
|
||||
2
tests/ref/fate/canopus-hqx422a
Normal file
2
tests/ref/fate/canopus-hqx422a
Normal file
@ -0,0 +1,2 @@
|
||||
#tb 0: 1/25
|
||||
0, 0, 0, 1, 8294400, 0x9b38264d
|
||||
Loading…
Reference in New Issue
Block a user