[FFmpeg-cvslog] avcodec: add RTV1 decoder
Paul B Mahol
git at videolan.org
Wed Jun 7 10:04:33 EEST 2023
ffmpeg | branch: master | Paul B Mahol <onemda at gmail.com> | Sat Jun 3 12:29:25 2023 +0200| [f11515c77f0a2915b831d91f061fb11c4359601f] | committer: Paul B Mahol
avcodec: add RTV1 decoder
> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=f11515c77f0a2915b831d91f061fb11c4359601f
---
Changelog | 1 +
configure | 1 +
libavcodec/Makefile | 1 +
libavcodec/allcodecs.c | 1 +
libavcodec/codec_desc.c | 7 +++
libavcodec/codec_id.h | 1 +
libavcodec/rtv1.c | 148 ++++++++++++++++++++++++++++++++++++++++++++++++
libavcodec/version.h | 4 +-
libavformat/riff.c | 1 +
9 files changed, 163 insertions(+), 2 deletions(-)
diff --git a/Changelog b/Changelog
index 3d197f2b94..c7e71ecfd8 100644
--- a/Changelog
+++ b/Changelog
@@ -14,6 +14,7 @@ version <next>:
- color_vulkan filter
- bwdif_vulkan filter
- nlmeans_vulkan filter
+- RivaTuner video decoder
version 6.0:
- Radiance HDR image support
diff --git a/configure b/configure
index 2992dae283..7e68d56ab0 100755
--- a/configure
+++ b/configure
@@ -2962,6 +2962,7 @@ ralf_decoder_select="golomb"
rasc_decoder_select="inflate_wrapper"
rawvideo_decoder_select="bswapdsp"
rscc_decoder_deps="zlib"
+rtv1_decoder_select="texturedsp"
rv10_decoder_select="h263_decoder"
rv10_encoder_select="h263_encoder"
rv20_decoder_select="h263_decoder"
diff --git a/libavcodec/Makefile b/libavcodec/Makefile
index 9aacc1d477..87a8b90037 100644
--- a/libavcodec/Makefile
+++ b/libavcodec/Makefile
@@ -643,6 +643,7 @@ OBJS-$(CONFIG_ROQ_DPCM_ENCODER) += roqaudioenc.o
OBJS-$(CONFIG_RPZA_DECODER) += rpza.o
OBJS-$(CONFIG_RPZA_ENCODER) += rpzaenc.o
OBJS-$(CONFIG_RSCC_DECODER) += rscc.o
+OBJS-$(CONFIG_RTV1_DECODER) += rtv1.o
OBJS-$(CONFIG_RV10_DECODER) += rv10.o
OBJS-$(CONFIG_RV10_ENCODER) += rv10enc.o
OBJS-$(CONFIG_RV20_DECODER) += rv10.o
diff --git a/libavcodec/allcodecs.c b/libavcodec/allcodecs.c
index 184bb8521f..a98c300da4 100644
--- a/libavcodec/allcodecs.c
+++ b/libavcodec/allcodecs.c
@@ -295,6 +295,7 @@ extern const FFCodec ff_roq_decoder;
extern const FFCodec ff_rpza_encoder;
extern const FFCodec ff_rpza_decoder;
extern const FFCodec ff_rscc_decoder;
+extern const FFCodec ff_rtv1_decoder;
extern const FFCodec ff_rv10_encoder;
extern const FFCodec ff_rv10_decoder;
extern const FFCodec ff_rv20_encoder;
diff --git a/libavcodec/codec_desc.c b/libavcodec/codec_desc.c
index 310ed66415..41293a78dc 100644
--- a/libavcodec/codec_desc.c
+++ b/libavcodec/codec_desc.c
@@ -1946,6 +1946,13 @@ static const AVCodecDescriptor codec_descriptors[] = {
.props = AV_CODEC_PROP_LOSSY | AV_CODEC_PROP_REORDER,
.profiles = NULL_IF_CONFIG_SMALL(ff_evc_profiles),
},
+ {
+ .id = AV_CODEC_ID_RTV1,
+ .type = AVMEDIA_TYPE_VIDEO,
+ .name = "rtv1",
+ .long_name = NULL_IF_CONFIG_SMALL("RTV1 (RivaTuner Video)"),
+ .props = AV_CODEC_PROP_INTRA_ONLY | AV_CODEC_PROP_LOSSY,
+ },
/* various PCM "codecs" */
{
diff --git a/libavcodec/codec_id.h b/libavcodec/codec_id.h
index 9f621afff0..9a78cfabe2 100644
--- a/libavcodec/codec_id.h
+++ b/libavcodec/codec_id.h
@@ -322,6 +322,7 @@ enum AVCodecID {
AV_CODEC_ID_VQC,
AV_CODEC_ID_PDV,
AV_CODEC_ID_EVC,
+ AV_CODEC_ID_RTV1,
/* various PCM "codecs" */
AV_CODEC_ID_FIRST_AUDIO = 0x10000, ///< A dummy id pointing at the start of audio codecs
diff --git a/libavcodec/rtv1.c b/libavcodec/rtv1.c
new file mode 100644
index 0000000000..4b202e6a21
--- /dev/null
+++ b/libavcodec/rtv1.c
@@ -0,0 +1,148 @@
+/*
+ * RTV1 decoder
+ * Copyright (c) 2023 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
+ */
+
+#include <stdio.h>
+#include <string.h>
+
+#include "avcodec.h"
+#include "bytestream.h"
+#include "codec_internal.h"
+#include "decode.h"
+#include "texturedsp.h"
+#include "thread.h"
+
+static av_cold int decode_init(AVCodecContext *avctx)
+{
+ TextureDSPContext *dsp = avctx->priv_data;
+ avctx->pix_fmt = AV_PIX_FMT_BGR0;
+ ff_texturedsp_init(dsp);
+ return 0;
+}
+
+static int decode_rtv1(GetByteContext *gb, uint8_t *dst, ptrdiff_t linesize,
+ int width, int height, int flag,
+ int (*dxt1_block)(uint8_t *dst, ptrdiff_t stride, const uint8_t *block))
+{
+ uint8_t block[8] = { 0 };
+ int run = 0;
+
+ for (int y = 0; y < height; y += 4) {
+ for (int x = 0; x < width * 4; x += 16) {
+ int mode = 0;
+
+ if (run && --run > 0) {
+ dxt1_block(dst + x, linesize, block);
+ } else {
+ int a, b;
+
+ if (bytestream2_get_bytes_left(gb) < 4)
+ break;
+
+ a = bytestream2_get_le16u(gb);
+ b = bytestream2_get_le16u(gb);
+ if (a == b && flag) {
+ AV_WL32(block + 4, 0);
+ } else if (a == 1 && b == 0xffff) {
+ mode = 1;
+ } else if (b && a == 0) {
+ run = b;
+ } else {
+ AV_WL16(block, a);
+ AV_WL16(block + 2, b);
+ AV_WL32(block + 4, bytestream2_get_le32(gb));
+ }
+ if (run && !mode) {
+ dxt1_block(dst + x, linesize, block);
+ } else if (!mode) {
+ AV_WL16(block, a);
+ AV_WL16(block + 2, b);
+ dxt1_block(dst + x, linesize, block);
+ } else {
+ if (bytestream2_get_bytes_left(gb) < 12 * 4)
+ break;
+
+ for (int by = 0; by < 4; by++) {
+ for (int bx = 0; bx < 4; bx++)
+ AV_WL32(dst + x + bx * 4 + by * linesize, bytestream2_get_le24u(gb));
+ }
+ }
+ }
+ }
+
+ dst += linesize * 4;
+ }
+
+ return 0;
+}
+
+static int decode_frame(AVCodecContext *avctx, AVFrame *p,
+ int *got_frame, AVPacket *avpkt)
+{
+ int ret, width, height, flags;
+ TextureDSPContext *dsp = avctx->priv_data;
+ GetByteContext gb;
+ ptrdiff_t linesize;
+ uint8_t *dst;
+
+ if (avpkt->size < 22)
+ return AVERROR_INVALIDDATA;
+
+ bytestream2_init(&gb, avpkt->data, avpkt->size);
+
+ if (bytestream2_get_le32(&gb) != MKTAG('D','X','T','1'))
+ return AVERROR_INVALIDDATA;
+ flags = bytestream2_get_le32(&gb);
+
+ width = bytestream2_get_le32(&gb);
+ height = bytestream2_get_le32(&gb);
+ ret = ff_set_dimensions(avctx, FFALIGN(width, 4), FFALIGN(height, 4));
+ if (ret < 0)
+ return ret;
+
+ avctx->width = width;
+ avctx->height = height;
+
+ if ((ret = ff_thread_get_buffer(avctx, p, 0)) < 0)
+ return ret;
+
+ dst = p->data[0] + p->linesize[0] * (avctx->coded_height - 1);
+ linesize = -p->linesize[0];
+
+ decode_rtv1(&gb, dst, linesize, width, height, flags, dsp->dxt1_block);
+
+ p->pict_type = AV_PICTURE_TYPE_I;
+ p->flags |= AV_FRAME_FLAG_KEY;
+
+ *got_frame = 1;
+
+ return avpkt->size;
+}
+
+const FFCodec ff_rtv1_decoder = {
+ .p.name = "rtv1",
+ CODEC_LONG_NAME("RTV1 (RivaTuner Video)"),
+ .p.type = AVMEDIA_TYPE_VIDEO,
+ .p.id = AV_CODEC_ID_RTV1,
+ .priv_data_size = sizeof(TextureDSPContext),
+ .init = decode_init,
+ FF_CODEC_DECODE_CB(decode_frame),
+ .p.capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_FRAME_THREADS,
+};
diff --git a/libavcodec/version.h b/libavcodec/version.h
index 9d0485b068..2618016a83 100644
--- a/libavcodec/version.h
+++ b/libavcodec/version.h
@@ -29,8 +29,8 @@
#include "version_major.h"
-#define LIBAVCODEC_VERSION_MINOR 16
-#define LIBAVCODEC_VERSION_MICRO 101
+#define LIBAVCODEC_VERSION_MINOR 17
+#define LIBAVCODEC_VERSION_MICRO 100
#define LIBAVCODEC_VERSION_INT AV_VERSION_INT(LIBAVCODEC_VERSION_MAJOR, \
LIBAVCODEC_VERSION_MINOR, \
diff --git a/libavformat/riff.c b/libavformat/riff.c
index 7319406b39..4279071159 100644
--- a/libavformat/riff.c
+++ b/libavformat/riff.c
@@ -501,6 +501,7 @@ const AVCodecTag ff_codec_bmp_tags[] = {
{ AV_CODEC_ID_NOTCHLC, MKTAG('n', 'l', 'c', '1') },
{ AV_CODEC_ID_VQC, MKTAG('V', 'Q', 'C', '1') },
{ AV_CODEC_ID_VQC, MKTAG('V', 'Q', 'C', '2') },
+ { AV_CODEC_ID_RTV1, MKTAG('R', 'T', 'V', '1') },
{ AV_CODEC_ID_NONE, 0 }
};
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