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GCC Code Coverage Report

Directory:	../../../ffmpeg/		Exec	Total	Coverage
File:	src/libavcodec/cdxl.c	Lines:	153	182	84.1 %
Date:	2020-01-27 20:17:04	Branches:	62	98	63.3 %


/*
 * CDXL video decoder
 * Copyright (c) 2011-2012 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
 * Commodore CDXL video decoder
 * @author Paul B Mahol
 */

#define UNCHECKED_BITSTREAM_READER 1

#include "libavutil/intreadwrite.h"
#include "libavutil/imgutils.h"
#include "avcodec.h"
#include "bytestream.h"
#include "get_bits.h"
#include "internal.h"

#define BIT_PLANAR   0x00
#define CHUNKY       0x20
#define BYTE_PLANAR  0x40
#define BIT_LINE     0x80
#define BYTE_LINE    0xC0

typedef struct CDXLVideoContext {
    AVCodecContext *avctx;
    int            bpp;
    int            format;
    int            padded_bits;
    const uint8_t  *palette;
    int            palette_size;
    const uint8_t  *video;
    int            video_size;
    uint8_t        *new_video;
    int            new_video_size;
} CDXLVideoContext;

static av_cold int cdxl_decode_init(AVCodecContext *avctx)
{
    CDXLVideoContext *c = avctx->priv_data;

    c->new_video_size = 0;
    c->avctx          = avctx;

    return 0;
}

static void import_palette(CDXLVideoContext *c, uint32_t *new_palette)
{
    int i;

    for (i = 0; i < c->palette_size / 2; i++) {
        unsigned rgb = AV_RB16(&c->palette[i * 2]);
        unsigned r   = ((rgb >> 8) & 0xF) * 0x11;
        unsigned g   = ((rgb >> 4) & 0xF) * 0x11;
        unsigned b   =  (rgb       & 0xF) * 0x11;
        AV_WN32(&new_palette[i], (0xFFU << 24) | (r << 16) | (g << 8) | b);
    }
}

static void bitplanar2chunky(CDXLVideoContext *c, int linesize, uint8_t *out)
{
    GetBitContext gb;
    int x, y, plane;

    if (init_get_bits8(&gb, c->video, c->video_size) < 0)
        return;
    for (plane = 0; plane < c->bpp; plane++) {
        for (y = 0; y < c->avctx->height; y++) {
            for (x = 0; x < c->avctx->width; x++)
                out[linesize * y + x] |= get_bits1(&gb) << plane;
            skip_bits(&gb, c->padded_bits);
        }
    }
}

static void bitline2chunky(CDXLVideoContext *c, int linesize, uint8_t *out)
{
    GetBitContext  gb;
    int x, y, plane;

    if (init_get_bits8(&gb, c->video, c->video_size) < 0)
        return;
    for (y = 0; y < c->avctx->height; y++) {
        for (plane = 0; plane < c->bpp; plane++) {
            for (x = 0; x < c->avctx->width; x++)
                out[linesize * y + x] |= get_bits1(&gb) << plane;
            skip_bits(&gb, c->padded_bits);
        }
    }
}

static void chunky2chunky(CDXLVideoContext *c, int linesize, uint8_t *out)
{
    GetByteContext gb;
    int y;

    bytestream2_init(&gb, c->video, c->video_size);
    for (y = 0; y < c->avctx->height; y++) {
        bytestream2_get_buffer(&gb, out + linesize * y, c->avctx->width * 3);
    }
}

static void import_format(CDXLVideoContext *c, int linesize, uint8_t *out)
{
    memset(out, 0, linesize * c->avctx->height);

    switch (c->format) {
    case BIT_PLANAR:
        bitplanar2chunky(c, linesize, out);
        break;
    case BIT_LINE:
        bitline2chunky(c, linesize, out);
        break;
    case CHUNKY:
        chunky2chunky(c, linesize, out);
        break;
    }
}

static void cdxl_decode_rgb(CDXLVideoContext *c, AVFrame *frame)
{
    uint32_t *new_palette = (uint32_t *)frame->data[1];

    memset(frame->data[1], 0, AVPALETTE_SIZE);
    import_palette(c, new_palette);
    import_format(c, frame->linesize[0], frame->data[0]);
}

static void cdxl_decode_raw(CDXLVideoContext *c, AVFrame *frame)
{
    import_format(c, frame->linesize[0], frame->data[0]);
}

static void cdxl_decode_ham6(CDXLVideoContext *c, AVFrame *frame)
{
    AVCodecContext *avctx = c->avctx;
    uint32_t new_palette[16], r, g, b;
    uint8_t *ptr, *out, index, op;
    int x, y;

    ptr = c->new_video;
    out = frame->data[0];

    import_palette(c, new_palette);
    import_format(c, avctx->width, c->new_video);

    for (y = 0; y < avctx->height; y++) {
        r = new_palette[0] & 0xFF0000;
        g = new_palette[0] & 0xFF00;
        b = new_palette[0] & 0xFF;
        for (x = 0; x < avctx->width; x++) {
            index  = *ptr++;
            op     = index >> 4;
            index &= 15;
            switch (op) {
            case 0:
                r = new_palette[index] & 0xFF0000;
                g = new_palette[index] & 0xFF00;
                b = new_palette[index] & 0xFF;
                break;
            case 1:
                b = index * 0x11;
                break;
            case 2:
                r = index * 0x11 << 16;
                break;
            case 3:
                g = index * 0x11 << 8;
                break;
            }
            AV_WL24(out + x * 3, r | g | b);
        }
        out += frame->linesize[0];
    }
}

static void cdxl_decode_ham8(CDXLVideoContext *c, AVFrame *frame)
{
    AVCodecContext *avctx = c->avctx;
    uint32_t new_palette[64], r, g, b;
    uint8_t *ptr, *out, index, op;
    int x, y;

    ptr = c->new_video;
    out = frame->data[0];

    import_palette(c, new_palette);
    import_format(c, avctx->width, c->new_video);

    for (y = 0; y < avctx->height; y++) {
        r = new_palette[0] & 0xFF0000;
        g = new_palette[0] & 0xFF00;
        b = new_palette[0] & 0xFF;
        for (x = 0; x < avctx->width; x++) {
            index  = *ptr++;
            op     = index >> 6;
            index &= 63;
            switch (op) {
            case 0:
                r = new_palette[index] & 0xFF0000;
                g = new_palette[index] & 0xFF00;
                b = new_palette[index] & 0xFF;
                break;
            case 1:
                b = (index <<  2) | (b & 3);
                break;
            case 2:
                r = (index << 18) | (r & (3 << 16));
                break;
            case 3:
                g = (index << 10) | (g & (3 << 8));
                break;
            }
            AV_WL24(out + x * 3, r | g | b);
        }
        out += frame->linesize[0];
    }
}

static int cdxl_decode_frame(AVCodecContext *avctx, void *data,
                             int *got_frame, AVPacket *pkt)
{
    CDXLVideoContext *c = avctx->priv_data;
    AVFrame * const p = data;
    int ret, w, h, encoding, aligned_width, buf_size = pkt->size;
    const uint8_t *buf = pkt->data;

    if (buf_size < 32)
        return AVERROR_INVALIDDATA;
    encoding        = buf[1] & 7;
    c->format       = buf[1] & 0xE0;
    w               = AV_RB16(&buf[14]);
    h               = AV_RB16(&buf[16]);
    c->bpp          = buf[19];
    c->palette_size = AV_RB16(&buf[20]);
    c->palette      = buf + 32;
    c->video        = c->palette + c->palette_size;
    c->video_size   = buf_size - c->palette_size - 32;

    if (c->palette_size > 512)
        return AVERROR_INVALIDDATA;
    if (buf_size < c->palette_size + 32)
        return AVERROR_INVALIDDATA;
    if (c->bpp < 1)
        return AVERROR_INVALIDDATA;
    if (c->format != BIT_PLANAR && c->format != BIT_LINE && c->format != CHUNKY) {
        avpriv_request_sample(avctx, "Pixel format 0x%0x", c->format);
        return AVERROR_PATCHWELCOME;
    }

    if ((ret = ff_set_dimensions(avctx, w, h)) < 0)
        return ret;

    if (c->format == CHUNKY)
        aligned_width = avctx->width;
    else
        aligned_width = FFALIGN(c->avctx->width, 16);
    c->padded_bits  = aligned_width - c->avctx->width;
    if (c->video_size < aligned_width * avctx->height * (int64_t)c->bpp / 8)
        return AVERROR_INVALIDDATA;
    if (!encoding && c->palette_size && c->bpp <= 8 && c->format != CHUNKY) {
        avctx->pix_fmt = AV_PIX_FMT_PAL8;
    } else if (encoding == 1 && (c->bpp == 6 || c->bpp == 8) && c->format != CHUNKY) {
        if (c->palette_size != (1 << (c->bpp - 1)))
            return AVERROR_INVALIDDATA;
        avctx->pix_fmt = AV_PIX_FMT_BGR24;
    } else if (!encoding && c->bpp == 24 && c->format == CHUNKY &&
               !c->palette_size) {
        avctx->pix_fmt = AV_PIX_FMT_RGB24;
    } else {
        avpriv_request_sample(avctx, "Encoding %d, bpp %d and format 0x%x",
                              encoding, c->bpp, c->format);
        return AVERROR_PATCHWELCOME;
    }

    if ((ret = ff_get_buffer(avctx, p, 0)) < 0)
        return ret;
    p->pict_type = AV_PICTURE_TYPE_I;

    if (encoding) {
        av_fast_padded_malloc(&c->new_video, &c->new_video_size,
                              h * w + AV_INPUT_BUFFER_PADDING_SIZE);
        if (!c->new_video)
            return AVERROR(ENOMEM);
        if (c->bpp == 8)
            cdxl_decode_ham8(c, p);
        else
            cdxl_decode_ham6(c, p);
    } else if (avctx->pix_fmt == AV_PIX_FMT_PAL8) {
        cdxl_decode_rgb(c, p);
    } else {
        cdxl_decode_raw(c, p);
    }
    *got_frame = 1;

    return buf_size;
}

static av_cold int cdxl_decode_end(AVCodecContext *avctx)
{
    CDXLVideoContext *c = avctx->priv_data;

    av_freep(&c->new_video);

    return 0;
}

AVCodec ff_cdxl_decoder = {
    .name           = "cdxl",
    .long_name      = NULL_IF_CONFIG_SMALL("Commodore CDXL video"),
    .type           = AVMEDIA_TYPE_VIDEO,
    .id             = AV_CODEC_ID_CDXL,
    .priv_data_size = sizeof(CDXLVideoContext),
    .init           = cdxl_decode_init,
    .close          = cdxl_decode_end,
    .decode         = cdxl_decode_frame,
    .capabilities   = AV_CODEC_CAP_DR1,
};


Generated by: GCOVR (Version 4.1)

Line	Branch	Exec	Source
1			/*
2			* CDXL video decoder
3			* Copyright (c) 2011-2012 Paul B Mahol
4			*
5			* This file is part of FFmpeg.
6			*
7			* FFmpeg is free software; you can redistribute it and/or
8			* modify it under the terms of the GNU Lesser General Public
9			* License as published by the Free Software Foundation; either
10			* version 2.1 of the License, or (at your option) any later version.
11			*
12			* FFmpeg is distributed in the hope that it will be useful,
13			* but WITHOUT ANY WARRANTY; without even the implied warranty of
14			* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15			* Lesser General Public License for more details.
16			*
17			* You should have received a copy of the GNU Lesser General Public
18			* License along with FFmpeg; if not, write to the Free Software
19			* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20			*/
21
22			/**
23			* @file
24			* Commodore CDXL video decoder
25			* @author Paul B Mahol
26			*/
27
28			#define UNCHECKED_BITSTREAM_READER 1
29
30			#include "libavutil/intreadwrite.h"
31			#include "libavutil/imgutils.h"
32			#include "avcodec.h"
33			#include "bytestream.h"
34			#include "get_bits.h"
35			#include "internal.h"
36
37			#define BIT_PLANAR 0x00
38			#define CHUNKY 0x20
39			#define BYTE_PLANAR 0x40
40			#define BIT_LINE 0x80
41			#define BYTE_LINE 0xC0
42
43			typedef struct CDXLVideoContext {
44			AVCodecContext *avctx;
45			int bpp;
46			int format;
47			int padded_bits;
48			const uint8_t *palette;
49			int palette_size;
50			const uint8_t *video;
51			int video_size;
52			uint8_t *new_video;
53			int new_video_size;
54			} CDXLVideoContext;
55
56		11	static av_cold int cdxl_decode_init(AVCodecContext *avctx)
57			{
58		11	CDXLVideoContext *c = avctx->priv_data;
59
60		11	c->new_video_size = 0;
61		11	c->avctx = avctx;
62
63		11	return 0;
64			}
65
66		90	static void import_palette(CDXLVideoContext c, uint32_t new_palette)
67			{
68			int i;
69
70	✓✓	4554	for (i = 0; i < c->palette_size / 2; i++) {
71		4464	unsigned rgb = AV_RB16(&c->palette[i * 2]);
72		4464	unsigned r = ((rgb >> 8) & 0xF) * 0x11;
73		4464	unsigned g = ((rgb >> 4) & 0xF) * 0x11;
74		4464	unsigned b = (rgb & 0xF) * 0x11;
75		4464	AV_WN32(&new_palette[i], (0xFFU << 24) \| (r << 16) \| (g << 8) \| b);
76			}
77		90	}
78
79		79	static void bitplanar2chunky(CDXLVideoContext c, int linesize, uint8_t out)
80			{
81			GetBitContext gb;
82			int x, y, plane;
83
84	✗✓	79	if (init_get_bits8(&gb, c->video, c->video_size) < 0)
85			return;
86	✓✓	489	for (plane = 0; plane < c->bpp; plane++) {
87	✓✓	43050	for (y = 0; y < c->avctx->height; y++) {
88	✓✓	6629520	for (x = 0; x < c->avctx->width; x++)
89		6586880	out[linesize * y + x] \|= get_bits1(&gb) << plane;
90		42640	skip_bits(&gb, c->padded_bits);
91			}
92			}
93			}
94
95		11	static void bitline2chunky(CDXLVideoContext c, int linesize, uint8_t out)
96			{
97			GetBitContext gb;
98			int x, y, plane;
99
100	✗✓	11	if (init_get_bits8(&gb, c->video, c->video_size) < 0)
101			return;
102	✓✓	1441	for (y = 0; y < c->avctx->height; y++) {
103	✓✓	10010	for (plane = 0; plane < c->bpp; plane++) {
104	✓✓	1398540	for (x = 0; x < c->avctx->width; x++)
105		1389960	out[linesize * y + x] \|= get_bits1(&gb) << plane;
106		8580	skip_bits(&gb, c->padded_bits);
107			}
108			}
109			}
110
111			static void chunky2chunky(CDXLVideoContext c, int linesize, uint8_t out)
112			{
113			GetByteContext gb;
114			int y;
115
116			bytestream2_init(&gb, c->video, c->video_size);
117			for (y = 0; y < c->avctx->height; y++) {
118			bytestream2_get_buffer(&gb, out + linesize * y, c->avctx->width * 3);
119			}
120			}
121
122		90	static void import_format(CDXLVideoContext c, int linesize, uint8_t out)
123			{
124		90	memset(out, 0, linesize * c->avctx->height);
125
126	✓✓✗✗	90	switch (c->format) {
127		79	case BIT_PLANAR:
128		79	bitplanar2chunky(c, linesize, out);
129		79	break;
130		11	case BIT_LINE:
131		11	bitline2chunky(c, linesize, out);
132		11	break;
133			case CHUNKY:
134			chunky2chunky(c, linesize, out);
135			break;
136			}
137		90	}
138
139		59	static void cdxl_decode_rgb(CDXLVideoContext c, AVFrame frame)
140			{
141		59	uint32_t new_palette = (uint32_t )frame->data[1];
142
143		59	memset(frame->data[1], 0, AVPALETTE_SIZE);
144		59	import_palette(c, new_palette);
145		59	import_format(c, frame->linesize[0], frame->data[0]);
146		59	}
147
148			static void cdxl_decode_raw(CDXLVideoContext c, AVFrame frame)
149			{
150			import_format(c, frame->linesize[0], frame->data[0]);
151			}
152
153		28	static void cdxl_decode_ham6(CDXLVideoContext c, AVFrame frame)
154			{
155		28	AVCodecContext *avctx = c->avctx;
156			uint32_t new_palette[16], r, g, b;
157			uint8_t ptr, out, index, op;
158			int x, y;
159
160		28	ptr = c->new_video;
161		28	out = frame->data[0];
162
163		28	import_palette(c, new_palette);
164		28	import_format(c, avctx->width, c->new_video);
165
166	✓✓	3498	for (y = 0; y < avctx->height; y++) {
167		3470	r = new_palette[0] & 0xFF0000;
168		3470	g = new_palette[0] & 0xFF00;
169		3470	b = new_palette[0] & 0xFF;
170	✓✓	561530	for (x = 0; x < avctx->width; x++) {
171		558060	index = *ptr++;
172		558060	op = index >> 4;
173		558060	index &= 15;
174	✓✓✓✓ ✗	558060	switch (op) {
175		131279	case 0:
176		131279	r = new_palette[index] & 0xFF0000;
177		131279	g = new_palette[index] & 0xFF00;
178		131279	b = new_palette[index] & 0xFF;
179		131279	break;
180		108493	case 1:
181		108493	b = index * 0x11;
182		108493	break;
183		212370	case 2:
184		212370	r = index * 0x11 << 16;
185		212370	break;
186		105918	case 3:
187		105918	g = index * 0x11 << 8;
188		105918	break;
189			}
190		558060	AV_WL24(out + x * 3, r \| g \| b);
191			}
192		3470	out += frame->linesize[0];
193			}
194		28	}
195
196		3	static void cdxl_decode_ham8(CDXLVideoContext c, AVFrame frame)
197			{
198		3	AVCodecContext *avctx = c->avctx;
199			uint32_t new_palette[64], r, g, b;
200			uint8_t ptr, out, index, op;
201			int x, y;
202
203		3	ptr = c->new_video;
204		3	out = frame->data[0];
205
206		3	import_palette(c, new_palette);
207		3	import_format(c, avctx->width, c->new_video);
208
209	✓✓	387	for (y = 0; y < avctx->height; y++) {
210		384	r = new_palette[0] & 0xFF0000;
211		384	g = new_palette[0] & 0xFF00;
212		384	b = new_palette[0] & 0xFF;
213	✓✓	67968	for (x = 0; x < avctx->width; x++) {
214		67584	index = *ptr++;
215		67584	op = index >> 6;
216		67584	index &= 63;
217	✓✓✓✓ ✗	67584	switch (op) {
218		3417	case 0:
219		3417	r = new_palette[index] & 0xFF0000;
220		3417	g = new_palette[index] & 0xFF00;
221		3417	b = new_palette[index] & 0xFF;
222		3417	break;
223		627	case 1:
224		627	b = (index << 2) \| (b & 3);
225		627	break;
226		1122	case 2:
227		1122	r = (index << 18) \| (r & (3 << 16));
228		1122	break;
229		62418	case 3:
230		62418	g = (index << 10) \| (g & (3 << 8));
231		62418	break;
232			}
233		67584	AV_WL24(out + x * 3, r \| g \| b);
234			}
235		384	out += frame->linesize[0];
236			}
237		3	}
238
239		90	static int cdxl_decode_frame(AVCodecContext avctx, void data,
240			int got_frame, AVPacket pkt)
241			{
242		90	CDXLVideoContext *c = avctx->priv_data;
243		90	AVFrame * const p = data;
244		90	int ret, w, h, encoding, aligned_width, buf_size = pkt->size;
245		90	const uint8_t *buf = pkt->data;
246
247	✗✓	90	if (buf_size < 32)
248			return AVERROR_INVALIDDATA;
249		90	encoding = buf[1] & 7;
250		90	c->format = buf[1] & 0xE0;
251		90	w = AV_RB16(&buf[14]);
252		90	h = AV_RB16(&buf[16]);
253		90	c->bpp = buf[19];
254		90	c->palette_size = AV_RB16(&buf[20]);
255		90	c->palette = buf + 32;
256		90	c->video = c->palette + c->palette_size;
257		90	c->video_size = buf_size - c->palette_size - 32;
258
259	✗✓	90	if (c->palette_size > 512)
260			return AVERROR_INVALIDDATA;
261	✗✓	90	if (buf_size < c->palette_size + 32)
262			return AVERROR_INVALIDDATA;
263	✗✓	90	if (c->bpp < 1)
264			return AVERROR_INVALIDDATA;
265	✓✓✗✓ ✗✗	90	if (c->format != BIT_PLANAR && c->format != BIT_LINE && c->format != CHUNKY) {
266			avpriv_request_sample(avctx, "Pixel format 0x%0x", c->format);
267			return AVERROR_PATCHWELCOME;
268			}
269
270	✗✓	90	if ((ret = ff_set_dimensions(avctx, w, h)) < 0)
271			return ret;
272
273	✗✓	90	if (c->format == CHUNKY)
274			aligned_width = avctx->width;
275			else
276		90	aligned_width = FFALIGN(c->avctx->width, 16);
277		90	c->padded_bits = aligned_width - c->avctx->width;
278	✗✓	90	if (c->video_size < aligned_width * avctx->height * (int64_t)c->bpp / 8)
279			return AVERROR_INVALIDDATA;
280	✓✓✓✗ ✓✗✓✗	90	if (!encoding && c->palette_size && c->bpp <= 8 && c->format != CHUNKY) {
281		59	avctx->pix_fmt = AV_PIX_FMT_PAL8;
282	✓✗✓✓ ✓✗✓✗	31	} else if (encoding == 1 && (c->bpp == 6 \|\| c->bpp == 8) && c->format != CHUNKY) {
283	✗✓	31	if (c->palette_size != (1 << (c->bpp - 1)))
284			return AVERROR_INVALIDDATA;
285		31	avctx->pix_fmt = AV_PIX_FMT_BGR24;
286			} else if (!encoding && c->bpp == 24 && c->format == CHUNKY &&
287			!c->palette_size) {
288			avctx->pix_fmt = AV_PIX_FMT_RGB24;
289			} else {
290			avpriv_request_sample(avctx, "Encoding %d, bpp %d and format 0x%x",
291			encoding, c->bpp, c->format);
292			return AVERROR_PATCHWELCOME;
293			}
294
295	✗✓	90	if ((ret = ff_get_buffer(avctx, p, 0)) < 0)
296			return ret;
297		90	p->pict_type = AV_PICTURE_TYPE_I;
298
299	✓✓	90	if (encoding) {
300		31	av_fast_padded_malloc(&c->new_video, &c->new_video_size,
301		31	h * w + AV_INPUT_BUFFER_PADDING_SIZE);
302	✗✓	31	if (!c->new_video)
303			return AVERROR(ENOMEM);
304	✓✓	31	if (c->bpp == 8)
305		3	cdxl_decode_ham8(c, p);
306			else
307		28	cdxl_decode_ham6(c, p);
308	✓✗	59	} else if (avctx->pix_fmt == AV_PIX_FMT_PAL8) {
309		59	cdxl_decode_rgb(c, p);
310			} else {
311			cdxl_decode_raw(c, p);
312			}
313		90	*got_frame = 1;
314
315		90	return buf_size;
316			}
317
318		11	static av_cold int cdxl_decode_end(AVCodecContext *avctx)
319			{
320		11	CDXLVideoContext *c = avctx->priv_data;
321
322		11	av_freep(&c->new_video);
323
324		11	return 0;
325			}
326
327			AVCodec ff_cdxl_decoder = {
328			.name = "cdxl",
329			.long_name = NULL_IF_CONFIG_SMALL("Commodore CDXL video"),
330			.type = AVMEDIA_TYPE_VIDEO,
331			.id = AV_CODEC_ID_CDXL,
332			.priv_data_size = sizeof(CDXLVideoContext),
333			.init = cdxl_decode_init,
334			.close = cdxl_decode_end,
335			.decode = cdxl_decode_frame,
336			.capabilities = AV_CODEC_CAP_DR1,
337			};