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avcodec: add IPU Video decoder and parser

This commit is contained in:
Paul B Mahol 2020-09-14 11:35:26 +02:00
parent aed8f40d45
commit 5c2d7acb4f
8 changed files with 245 additions and 1 deletions
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2
libavcodec/Makefile
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@ -419,6 +419,7 @@ OBJS-$(CONFIG_INDEO5_DECODER) += indeo5.o ivi.o
OBJS-$(CONFIG_INTERPLAY_ACM_DECODER) += interplayacm.o
OBJS-$(CONFIG_INTERPLAY_DPCM_DECODER) += dpcm.o
OBJS-$(CONFIG_INTERPLAY_VIDEO_DECODER) += interplayvideo.o
OBJS-$(CONFIG_IPU_DECODER) += mpeg12dec.o mpeg12.o mpeg12data.o
OBJS-$(CONFIG_JACOSUB_DECODER) += jacosubdec.o ass.o
OBJS-$(CONFIG_JPEG2000_ENCODER) += j2kenc.o mqcenc.o mqc.o jpeg2000.o \
jpeg2000dwt.o
@ -1086,6 +1087,7 @@ OBJS-$(CONFIG_H261_PARSER) += h261_parser.o
OBJS-$(CONFIG_H263_PARSER) += h263_parser.o
OBJS-$(CONFIG_H264_PARSER) += h264_parser.o h264_sei.o h264data.o
OBJS-$(CONFIG_HEVC_PARSER) += hevc_parser.o hevc_data.o
OBJS-$(CONFIG_IPU_PARSER) += ipu_parser.o
OBJS-$(CONFIG_JPEG2000_PARSER) += jpeg2000_parser.o
OBJS-$(CONFIG_MJPEG_PARSER) += mjpeg_parser.o
OBJS-$(CONFIG_MLP_PARSER) += mlp_parse.o mlp_parser.o mlp.o

1
libavcodec/allcodecs.c
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@ -166,6 +166,7 @@ extern AVCodec ff_indeo3_decoder;
extern AVCodec ff_indeo4_decoder;
extern AVCodec ff_indeo5_decoder;
extern AVCodec ff_interplay_video_decoder;
extern AVCodec ff_ipu_decoder;
extern AVCodec ff_jpeg2000_encoder;
extern AVCodec ff_jpeg2000_decoder;
extern AVCodec ff_jpegls_encoder;

7
libavcodec/codec_desc.c
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@ -1798,6 +1798,13 @@ static const AVCodecDescriptor codec_descriptors[] = {
.long_name = NULL_IF_CONFIG_SMALL("Kodak Photo CD"),
.props = AV_CODEC_PROP_LOSSY,
},
{
.id = AV_CODEC_ID_IPU,
.type = AVMEDIA_TYPE_VIDEO,
.name = "ipu",
.long_name = NULL_IF_CONFIG_SMALL("IPU Video"),
.props = AV_CODEC_PROP_INTRA_ONLY | AV_CODEC_PROP_LOSSY,
},
/* various PCM "codecs" */
{

1
libavcodec/codec_id.h
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@ -298,6 +298,7 @@ enum AVCodecID {
AV_CODEC_ID_PFM,
AV_CODEC_ID_MOBICLIP,
AV_CODEC_ID_PHOTOCD,
AV_CODEC_ID_IPU,
/* various PCM "codecs" */
AV_CODEC_ID_FIRST_AUDIO = 0x10000, ///< A dummy id pointing at the start of audio codecs

77
libavcodec/ipu_parser.c Normal file
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@ -0,0 +1,77 @@
/*
* IPU parser
* Copyright (c) 2020 Paul B Mahol
*
* This file is part of FFmpeg.
*
* FFmpeg 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.
*
* FFmpeg 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 FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
* @file
* IPU parser
*/
#include "parser.h"
typedef struct IPUParseContext {
ParseContext pc;
} IPUParseContext;
static int ipu_parse(AVCodecParserContext *s, AVCodecContext *avctx,
const uint8_t **poutbuf, int *poutbuf_size,
const uint8_t *buf, int buf_size)
{
IPUParseContext *ipc = s->priv_data;
uint32_t state = ipc->pc.state;
int next = END_NOT_FOUND, i = 0;
s->pict_type = AV_PICTURE_TYPE_NONE;
s->duration = 1;
*poutbuf_size = 0;
*poutbuf = NULL;
if (s->flags & PARSER_FLAG_COMPLETE_FRAMES) {
next = buf_size;
} else {
for (; i < buf_size; i++) {
state = (state << 8) | buf[i];
if (state == 0x1b0) {
next = i + 1;
break;
}
}
ipc->pc.state = state;
if (ff_combine_frame(&ipc->pc, next, &buf, &buf_size) < 0) {
*poutbuf = NULL;
*poutbuf_size = 0;
return buf_size;
}
}
*poutbuf = buf;
*poutbuf_size = buf_size;
return next;
}
AVCodecParser ff_ipu_parser = {
.codec_ids = { AV_CODEC_ID_IPU },
.priv_data_size = sizeof(IPUParseContext),
.parser_parse = ipu_parse,
.parser_close = ff_parse_close,
};

155
libavcodec/mpeg12dec.c
View File

@ -2984,3 +2984,158 @@ AVCodec ff_mpegvideo_decoder = {
.flush = flush,
.max_lowres = 3,
};
typedef struct IPUContext {
MpegEncContext m;
int flags;
DECLARE_ALIGNED(32, int16_t, block)[6][64];
} IPUContext;
static int ipu_decode_frame(AVCodecContext *avctx, void *data,
int *got_frame, AVPacket *avpkt)
{
IPUContext *s = avctx->priv_data;
MpegEncContext *m = &s->m;
GetBitContext *gb = &m->gb;
AVFrame * const frame = data;
int ret;
ret = ff_get_buffer(avctx, frame, 0);
if (ret < 0)
return ret;
ret = init_get_bits8(gb, avpkt->data, avpkt->size);
if (ret < 0)
return ret;
s->flags = get_bits(gb, 8);
if (!(s->flags & 0x80)) {
m->intra_dc_precision = s->flags & 3;
m->q_scale_type = !!(s->flags & 0x40);
m->intra_vlc_format = !!(s->flags & 0x20);
m->alternate_scan = !!(s->flags & 0x10);
if (s->flags & 0x10) {
ff_init_scantable(m->idsp.idct_permutation, &m->inter_scantable, ff_alternate_vertical_scan);
ff_init_scantable(m->idsp.idct_permutation, &m->intra_scantable, ff_alternate_vertical_scan);
} else {
ff_init_scantable(m->idsp.idct_permutation, &m->inter_scantable, ff_zigzag_direct);
ff_init_scantable(m->idsp.idct_permutation, &m->intra_scantable, ff_zigzag_direct);
}
m->last_dc[0] = m->last_dc[1] = m->last_dc[2] = 1 << (7 + (s->flags & 3));
}
m->qscale = 1;
for (int y = 0; y < avctx->height; y += 16) {
int intraquant;
for (int x = 0; x < avctx->width; x += 16) {
if (x || y) {
if (!get_bits1(gb))
return AVERROR_INVALIDDATA;
}
if (get_bits1(gb)) {
intraquant = 0;
} else {
if (!get_bits1(gb))
return AVERROR_INVALIDDATA;
intraquant = 1;
}
if (s->flags & 4)
skip_bits1(gb);
if (intraquant)
m->qscale = mpeg_get_qscale(m);
memset(s->block, 0, sizeof(s->block));
for (int n = 0; n < 6; n++) {
if (s->flags & 0x20)
ret = mpeg2_decode_block_intra(m, s->block[n], n);
else
ret = mpeg2_decode_block_non_intra(m, s->block[n], n);
if (ret < 0)
return ret;
}
m->idsp.idct_put(frame->data[0] + y * frame->linesize[0] + x,
frame->linesize[0], s->block[0]);
m->idsp.idct_put(frame->data[0] + y * frame->linesize[0] + x + 8,
frame->linesize[0], s->block[1]);
m->idsp.idct_put(frame->data[0] + (y + 8) * frame->linesize[0] + x,
frame->linesize[0], s->block[2]);
m->idsp.idct_put(frame->data[0] + (y + 8) * frame->linesize[0] + x + 8,
frame->linesize[0], s->block[3]);
m->idsp.idct_put(frame->data[1] + (y >> 1) * frame->linesize[1] + (x >> 1),
frame->linesize[1], s->block[4]);
m->idsp.idct_put(frame->data[2] + (y >> 1) * frame->linesize[2] + (x >> 1),
frame->linesize[2], s->block[5]);
}
}
align_get_bits(gb);
if (get_bits_left(gb) != 32)
return AVERROR_INVALIDDATA;
frame->pict_type = AV_PICTURE_TYPE_I;
frame->key_frame = 1;
*got_frame = 1;
return avpkt->size;
}
static av_cold int ipu_decode_init(AVCodecContext *avctx)
{
IPUContext *s = avctx->priv_data;
MpegEncContext *m = &s->m;
avctx->pix_fmt = AV_PIX_FMT_YUV420P;
ff_mpv_decode_defaults(m);
ff_mpv_decode_init(m, avctx);
s->m.avctx = avctx;
ff_mpv_idct_init(m);
ff_mpeg12_common_init(m);
ff_mpeg12_init_vlcs();
for (int i = 0; i < 64; i++) {
int j = m->idsp.idct_permutation[i];
int v = ff_mpeg1_default_intra_matrix[i];
m->intra_matrix[j] = v;
m->chroma_intra_matrix[j] = v;
}
for (int i = 0; i < 64; i++) {
int j = m->idsp.idct_permutation[i];
int v = ff_mpeg1_default_non_intra_matrix[i];
m->inter_matrix[j] = v;
m->chroma_inter_matrix[j] = v;
}
return 0;
}
static av_cold int ipu_decode_end(AVCodecContext *avctx)
{
IPUContext *s = avctx->priv_data;
ff_mpv_common_end(&s->m);
return 0;
}
AVCodec ff_ipu_decoder = {
.name = "ipu",
.long_name = NULL_IF_CONFIG_SMALL("IPU Video"),
.type = AVMEDIA_TYPE_VIDEO,
.id = AV_CODEC_ID_IPU,
.priv_data_size = sizeof(IPUContext),
.init = ipu_decode_init,
.decode = ipu_decode_frame,
.close = ipu_decode_end,
.capabilities = AV_CODEC_CAP_DR1,
.caps_internal = FF_CODEC_CAP_INIT_CLEANUP,
};

1
libavcodec/parsers.c
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@ -48,6 +48,7 @@ extern AVCodecParser ff_h261_parser;
extern AVCodecParser ff_h263_parser;
extern AVCodecParser ff_h264_parser;
extern AVCodecParser ff_hevc_parser;
extern AVCodecParser ff_ipu_parser;
extern AVCodecParser ff_jpeg2000_parser;
extern AVCodecParser ff_mjpeg_parser;
extern AVCodecParser ff_mlp_parser;

2
libavcodec/version.h
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@ -28,7 +28,7 @@
#include "libavutil/version.h"
#define LIBAVCODEC_VERSION_MAJOR 58
#define LIBAVCODEC_VERSION_MINOR 106
#define LIBAVCODEC_VERSION_MINOR 107
#define LIBAVCODEC_VERSION_MICRO 100
#define LIBAVCODEC_VERSION_INT AV_VERSION_INT(LIBAVCODEC_VERSION_MAJOR, \