FFmpeg coverage

GCC Code Coverage Report

Directory:	../../../ffmpeg/		Exec	Total	Coverage
File:	src/libavcodec/roqvideodec.c	Lines:	130	138	94.2 %
Date:	2021-04-18 10:33:33	Branches:	61	74	82.4 %


/*
 * Copyright (C) 2003 The FFmpeg project
 *
 * 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
 * id RoQ Video Decoder by Dr. Tim Ferguson
 * For more information about the id RoQ format, visit:
 *   http://www.csse.monash.edu.au/~timf/
 */

#include "libavutil/avassert.h"
#include "libavutil/imgutils.h"

#include "avcodec.h"
#include "bytestream.h"
#include "internal.h"
#include "roqvideo.h"

static void roqvideo_decode_frame(RoqContext *ri, GetByteContext *gb)
{
    unsigned int chunk_id = 0, chunk_arg = 0;
    unsigned long chunk_size = 0;
    int i, j, k, nv1, nv2, vqflg = 0, vqflg_pos = -1;
    int vqid, xpos, ypos, xp, yp, x, y, mx, my;
    roq_qcell *qcell;
    int64_t chunk_start;

    while (bytestream2_get_bytes_left(gb) >= 8) {
        chunk_id   = bytestream2_get_le16(gb);
        chunk_size = bytestream2_get_le32(gb);
        chunk_arg  = bytestream2_get_le16(gb);

        if(chunk_id == RoQ_QUAD_VQ)
            break;
        if(chunk_id == RoQ_QUAD_CODEBOOK) {
            if((nv1 = chunk_arg >> 8) == 0)
                nv1 = 256;
            if((nv2 = chunk_arg & 0xff) == 0 && nv1 * 6 < chunk_size)
                nv2 = 256;
            for(i = 0; i < nv1; i++) {
                ri->cb2x2[i].y[0] = bytestream2_get_byte(gb);
                ri->cb2x2[i].y[1] = bytestream2_get_byte(gb);
                ri->cb2x2[i].y[2] = bytestream2_get_byte(gb);
                ri->cb2x2[i].y[3] = bytestream2_get_byte(gb);
                ri->cb2x2[i].u    = bytestream2_get_byte(gb);
                ri->cb2x2[i].v    = bytestream2_get_byte(gb);
            }
            for(i = 0; i < nv2; i++)
                for(j = 0; j < 4; j++)
                    ri->cb4x4[i].idx[j] = bytestream2_get_byte(gb);
        }
    }

    chunk_start = bytestream2_tell(gb);
    xpos = ypos = 0;

    if (chunk_size > bytestream2_get_bytes_left(gb)) {
        av_log(ri->avctx, AV_LOG_ERROR, "Chunk does not fit in input buffer\n");
        chunk_size = bytestream2_get_bytes_left(gb);
    }

    while (bytestream2_tell(gb) < chunk_start + chunk_size) {
        for (yp = ypos; yp < ypos + 16; yp += 8)
            for (xp = xpos; xp < xpos + 16; xp += 8) {
                if (bytestream2_tell(gb) >= chunk_start + chunk_size) {
                    av_log(ri->avctx, AV_LOG_VERBOSE, "Chunk is too short\n");
                    return;
                }
                if (vqflg_pos < 0) {
                    vqflg = bytestream2_get_le16(gb);
                    vqflg_pos = 7;
                }
                vqid = (vqflg >> (vqflg_pos * 2)) & 0x3;
                vqflg_pos--;

                switch(vqid) {
                case RoQ_ID_MOT:
                    break;
                case RoQ_ID_FCC: {
                    int byte = bytestream2_get_byte(gb);
                    mx = 8 - (byte >> 4) - ((signed char) (chunk_arg >> 8));
                    my = 8 - (byte & 0xf) - ((signed char) chunk_arg);
                    ff_apply_motion_8x8(ri, xp, yp, mx, my);
                    break;
                }
                case RoQ_ID_SLD:
                    qcell = ri->cb4x4 + bytestream2_get_byte(gb);
                    ff_apply_vector_4x4(ri, xp,     yp,     ri->cb2x2 + qcell->idx[0]);
                    ff_apply_vector_4x4(ri, xp + 4, yp,     ri->cb2x2 + qcell->idx[1]);
                    ff_apply_vector_4x4(ri, xp,     yp + 4, ri->cb2x2 + qcell->idx[2]);
                    ff_apply_vector_4x4(ri, xp + 4, yp + 4, ri->cb2x2 + qcell->idx[3]);
                    break;
                case RoQ_ID_CCC:
                    for (k = 0; k < 4; k++) {
                        x = xp; y = yp;
                        if(k & 0x01) x += 4;
                        if(k & 0x02) y += 4;

                        if (bytestream2_tell(gb) >= chunk_start + chunk_size) {
                            av_log(ri->avctx, AV_LOG_VERBOSE, "Chunk is too short\n");
                            return;
                        }
                        if (vqflg_pos < 0) {
                            vqflg = bytestream2_get_le16(gb);
                            vqflg_pos = 7;
                        }
                        vqid = (vqflg >> (vqflg_pos * 2)) & 0x3;
                        vqflg_pos--;
                        switch(vqid) {
                        case RoQ_ID_MOT:
                            break;
                        case RoQ_ID_FCC: {
                            int byte = bytestream2_get_byte(gb);
                            mx = 8 - (byte >> 4) - ((signed char) (chunk_arg >> 8));
                            my = 8 - (byte & 0xf) - ((signed char) chunk_arg);
                            ff_apply_motion_4x4(ri, x, y, mx, my);
                            break;
                        }
                        case RoQ_ID_SLD:
                            qcell = ri->cb4x4 + bytestream2_get_byte(gb);
                            ff_apply_vector_2x2(ri, x,     y,     ri->cb2x2 + qcell->idx[0]);
                            ff_apply_vector_2x2(ri, x + 2, y,     ri->cb2x2 + qcell->idx[1]);
                            ff_apply_vector_2x2(ri, x,     y + 2, ri->cb2x2 + qcell->idx[2]);
                            ff_apply_vector_2x2(ri, x + 2, y + 2, ri->cb2x2 + qcell->idx[3]);
                            break;
                        case RoQ_ID_CCC:
                            ff_apply_vector_2x2(ri, x,     y,     ri->cb2x2 + bytestream2_get_byte(gb));
                            ff_apply_vector_2x2(ri, x + 2, y,     ri->cb2x2 + bytestream2_get_byte(gb));
                            ff_apply_vector_2x2(ri, x,     y + 2, ri->cb2x2 + bytestream2_get_byte(gb));
                            ff_apply_vector_2x2(ri, x + 2, y + 2, ri->cb2x2 + bytestream2_get_byte(gb));
                            break;
                        }
                    }
                    break;
                default:
                    av_assert2(0);
            }
        }

        xpos += 16;
        if (xpos >= ri->width) {
            xpos -= ri->width;
            ypos += 16;
        }
        if(ypos >= ri->height)
            break;
    }
}


static av_cold int roq_decode_init(AVCodecContext *avctx)
{
    RoqContext *s = avctx->priv_data;

    s->avctx = avctx;

    if (avctx->width % 16 || avctx->height % 16) {
        avpriv_request_sample(avctx, "Dimensions not being a multiple of 16");
        return AVERROR_PATCHWELCOME;
    }

    s->width = avctx->width;
    s->height = avctx->height;

    s->last_frame    = av_frame_alloc();
    s->current_frame = av_frame_alloc();
    if (!s->current_frame || !s->last_frame)
        return AVERROR(ENOMEM);

    avctx->pix_fmt = AV_PIX_FMT_YUVJ444P;
    avctx->color_range = AVCOL_RANGE_JPEG;

    return 0;
}

static int roq_decode_frame(AVCodecContext *avctx,
                            void *data, int *got_frame,
                            AVPacket *avpkt)
{
    const uint8_t *buf = avpkt->data;
    int buf_size = avpkt->size;
    RoqContext *s = avctx->priv_data;
    int copy = !s->current_frame->data[0] && s->last_frame->data[0];
    GetByteContext gb;
    int ret;

    if ((ret = ff_reget_buffer(avctx, s->current_frame, 0)) < 0)
        return ret;

    if (copy) {
        ret = av_frame_copy(s->current_frame, s->last_frame);
        if (ret < 0)
            return ret;
    }

    bytestream2_init(&gb, buf, buf_size);
    roqvideo_decode_frame(s, &gb);

    if ((ret = av_frame_ref(data, s->current_frame)) < 0)
        return ret;
    *got_frame      = 1;

    /* shuffle frames */
    FFSWAP(AVFrame *, s->current_frame, s->last_frame);

    return buf_size;
}

static av_cold int roq_decode_end(AVCodecContext *avctx)
{
    RoqContext *s = avctx->priv_data;

    av_frame_free(&s->current_frame);
    av_frame_free(&s->last_frame);

    return 0;
}

AVCodec ff_roq_decoder = {
    .name           = "roqvideo",
    .long_name      = NULL_IF_CONFIG_SMALL("id RoQ video"),
    .type           = AVMEDIA_TYPE_VIDEO,
    .id             = AV_CODEC_ID_ROQ,
    .priv_data_size = sizeof(RoqContext),
    .init           = roq_decode_init,
    .close          = roq_decode_end,
    .decode         = roq_decode_frame,
    .capabilities   = AV_CODEC_CAP_DR1,
    .caps_internal  = FF_CODEC_CAP_INIT_CLEANUP,
};


Generated by: GCOVR (Version 4.2)

Line	Branch	Exec	Source
1			/*
2			* Copyright (C) 2003 The FFmpeg project
3			*
4			* This file is part of FFmpeg.
5			*
6			* FFmpeg is free software; you can redistribute it and/or
7			* modify it under the terms of the GNU Lesser General Public
8			* License as published by the Free Software Foundation; either
9			* version 2.1 of the License, or (at your option) any later version.
10			*
11			* FFmpeg is distributed in the hope that it will be useful,
12			* but WITHOUT ANY WARRANTY; without even the implied warranty of
13			* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14			* Lesser General Public License for more details.
15			*
16			* You should have received a copy of the GNU Lesser General Public
17			* License along with FFmpeg; if not, write to the Free Software
18			* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19			*/
20
21			/**
22			* @file
23			* id RoQ Video Decoder by Dr. Tim Ferguson
24			* For more information about the id RoQ format, visit:
25			* http://www.csse.monash.edu.au/~timf/
26			*/
27
28			#include "libavutil/avassert.h"
29			#include "libavutil/imgutils.h"
30
31			#include "avcodec.h"
32			#include "bytestream.h"
33			#include "internal.h"
34			#include "roqvideo.h"
35
36		225	static void roqvideo_decode_frame(RoqContext ri, GetByteContext gb)
37			{
38		225	unsigned int chunk_id = 0, chunk_arg = 0;
39		225	unsigned long chunk_size = 0;
40		225	int i, j, k, nv1, nv2, vqflg = 0, vqflg_pos = -1;
41			int vqid, xpos, ypos, xp, yp, x, y, mx, my;
42			roq_qcell *qcell;
43			int64_t chunk_start;
44
45	✓✗	428	while (bytestream2_get_bytes_left(gb) >= 8) {
46		428	chunk_id = bytestream2_get_le16(gb);
47		428	chunk_size = bytestream2_get_le32(gb);
48		428	chunk_arg = bytestream2_get_le16(gb);
49
50	✓✓	428	if(chunk_id == RoQ_QUAD_VQ)
51		225	break;
52	✓✗	203	if(chunk_id == RoQ_QUAD_CODEBOOK) {
53	✓✓	203	if((nv1 = chunk_arg >> 8) == 0)
54		67	nv1 = 256;
55	✓✓✓✓	203	if((nv2 = chunk_arg & 0xff) == 0 && nv1 * 6 < chunk_size)
56		1	nv2 = 256;
57	✓✓	51102	for(i = 0; i < nv1; i++) {
58		50899	ri->cb2x2[i].y[0] = bytestream2_get_byte(gb);
59		50899	ri->cb2x2[i].y[1] = bytestream2_get_byte(gb);
60		50899	ri->cb2x2[i].y[2] = bytestream2_get_byte(gb);
61		50899	ri->cb2x2[i].y[3] = bytestream2_get_byte(gb);
62		50899	ri->cb2x2[i].u = bytestream2_get_byte(gb);
63		50899	ri->cb2x2[i].v = bytestream2_get_byte(gb);
64			}
65	✓✓	17934	for(i = 0; i < nv2; i++)
66	✓✓	88655	for(j = 0; j < 4; j++)
67		70924	ri->cb4x4[i].idx[j] = bytestream2_get_byte(gb);
68			}
69			}
70
71		225	chunk_start = bytestream2_tell(gb);
72		225	xpos = ypos = 0;
73
74	✗✓	225	if (chunk_size > bytestream2_get_bytes_left(gb)) {
75			av_log(ri->avctx, AV_LOG_ERROR, "Chunk does not fit in input buffer\n");
76			chunk_size = bytestream2_get_bytes_left(gb);
77			}
78
79	✓✗	113460	while (bytestream2_tell(gb) < chunk_start + chunk_size) {
80	✓✓	340342	for (yp = ypos; yp < ypos + 16; yp += 8)
81	✓✓	680707	for (xp = xpos; xp < xpos + 16; xp += 8) {
82	✓✓	453825	if (bytestream2_tell(gb) >= chunk_start + chunk_size) {
83		4	av_log(ri->avctx, AV_LOG_VERBOSE, "Chunk is too short\n");
84		4	return;
85			}
86	✓✓	453821	if (vqflg_pos < 0) {
87		56771	vqflg = bytestream2_get_le16(gb);
88		56771	vqflg_pos = 7;
89			}
90		453821	vqid = (vqflg >> (vqflg_pos * 2)) & 0x3;
91		453821	vqflg_pos--;
92
93	✓✓✓✓ ✗	453821	switch(vqid) {
94		121738	case RoQ_ID_MOT:
95		121738	break;
96		9277	case RoQ_ID_FCC: {
97		9277	int byte = bytestream2_get_byte(gb);
98		9277	mx = 8 - (byte >> 4) - ((signed char) (chunk_arg >> 8));
99		9277	my = 8 - (byte & 0xf) - ((signed char) chunk_arg);
100		9277	ff_apply_motion_8x8(ri, xp, yp, mx, my);
101		9277	break;
102			}
103		7001	case RoQ_ID_SLD:
104		7001	qcell = ri->cb4x4 + bytestream2_get_byte(gb);
105		7001	ff_apply_vector_4x4(ri, xp, yp, ri->cb2x2 + qcell->idx[0]);
106		7001	ff_apply_vector_4x4(ri, xp + 4, yp, ri->cb2x2 + qcell->idx[1]);
107		7001	ff_apply_vector_4x4(ri, xp, yp + 4, ri->cb2x2 + qcell->idx[2]);
108		7001	ff_apply_vector_4x4(ri, xp + 4, yp + 4, ri->cb2x2 + qcell->idx[3]);
109		7001	break;
110		315805	case RoQ_ID_CCC:
111	✓✓	1578984	for (k = 0; k < 4; k++) {
112		1263209	x = xp; y = yp;
113	✓✓	1263209	if(k & 0x01) x += 4;
114	✓✓	1263209	if(k & 0x02) y += 4;
115
116	✓✓	1263209	if (bytestream2_tell(gb) >= chunk_start + chunk_size) {
117		30	av_log(ri->avctx, AV_LOG_VERBOSE, "Chunk is too short\n");
118		30	return;
119			}
120	✓✓	1263179	if (vqflg_pos < 0) {
121		157911	vqflg = bytestream2_get_le16(gb);
122		157911	vqflg_pos = 7;
123			}
124		1263179	vqid = (vqflg >> (vqflg_pos * 2)) & 0x3;
125	✓✓✓✓ ✗	1263179	vqflg_pos--;
126			switch(vqid) {
127		259115	case RoQ_ID_MOT:
128		259115	break;
129		521989	case RoQ_ID_FCC: {
130		521989	int byte = bytestream2_get_byte(gb);
131		521989	mx = 8 - (byte >> 4) - ((signed char) (chunk_arg >> 8));
132		521989	my = 8 - (byte & 0xf) - ((signed char) chunk_arg);
133		521989	ff_apply_motion_4x4(ri, x, y, mx, my);
134		521989	break;
135			}
136		116817	case RoQ_ID_SLD:
137		116817	qcell = ri->cb4x4 + bytestream2_get_byte(gb);
138		116817	ff_apply_vector_2x2(ri, x, y, ri->cb2x2 + qcell->idx[0]);
139		116817	ff_apply_vector_2x2(ri, x + 2, y, ri->cb2x2 + qcell->idx[1]);
140		116817	ff_apply_vector_2x2(ri, x, y + 2, ri->cb2x2 + qcell->idx[2]);
141		116817	ff_apply_vector_2x2(ri, x + 2, y + 2, ri->cb2x2 + qcell->idx[3]);
142		116817	break;
143		365258	case RoQ_ID_CCC:
144		365258	ff_apply_vector_2x2(ri, x, y, ri->cb2x2 + bytestream2_get_byte(gb));
145		365258	ff_apply_vector_2x2(ri, x + 2, y, ri->cb2x2 + bytestream2_get_byte(gb));
146		365258	ff_apply_vector_2x2(ri, x, y + 2, ri->cb2x2 + bytestream2_get_byte(gb));
147		365258	ff_apply_vector_2x2(ri, x + 2, y + 2, ri->cb2x2 + bytestream2_get_byte(gb));
148		365258	break;
149			}
150		1263179	}
151		315775	break;
152		453791	default:
153			av_assert2(0);
154			}
155			}
156
157		113426	xpos += 16;
158	✓✓	113426	if (xpos >= ri->width) {
159		3596	xpos -= ri->width;
160		3596	ypos += 16;
161			}
162	✓✓	113426	if(ypos >= ri->height)
163		191	break;
164			}
165			}
166
167
168		10	static av_cold int roq_decode_init(AVCodecContext *avctx)
169			{
170		10	RoqContext *s = avctx->priv_data;
171
172		10	s->avctx = avctx;
173
174	✓✗✗✓	10	if (avctx->width % 16 \|\| avctx->height % 16) {
175			avpriv_request_sample(avctx, "Dimensions not being a multiple of 16");
176			return AVERROR_PATCHWELCOME;
177			}
178
179		10	s->width = avctx->width;
180		10	s->height = avctx->height;
181
182		10	s->last_frame = av_frame_alloc();
183		10	s->current_frame = av_frame_alloc();
184	✓✗✗✓	10	if (!s->current_frame \|\| !s->last_frame)
185			return AVERROR(ENOMEM);
186
187		10	avctx->pix_fmt = AV_PIX_FMT_YUVJ444P;
188		10	avctx->color_range = AVCOL_RANGE_JPEG;
189
190		10	return 0;
191			}
192
193		225	static int roq_decode_frame(AVCodecContext *avctx,
194			void data, int got_frame,
195			AVPacket *avpkt)
196			{
197		225	const uint8_t *buf = avpkt->data;
198		225	int buf_size = avpkt->size;
199		225	RoqContext *s = avctx->priv_data;
200	✓✓✓✓	225	int copy = !s->current_frame->data[0] && s->last_frame->data[0];
201			GetByteContext gb;
202			int ret;
203
204	✗✓	225	if ((ret = ff_reget_buffer(avctx, s->current_frame, 0)) < 0)
205			return ret;
206
207	✓✓	225	if (copy) {
208		4	ret = av_frame_copy(s->current_frame, s->last_frame);
209	✗✓	4	if (ret < 0)
210			return ret;
211			}
212
213		225	bytestream2_init(&gb, buf, buf_size);
214		225	roqvideo_decode_frame(s, &gb);
215
216	✗✓	225	if ((ret = av_frame_ref(data, s->current_frame)) < 0)
217			return ret;
218		225	*got_frame = 1;
219
220			/* shuffle frames */
221		225	FFSWAP(AVFrame *, s->current_frame, s->last_frame);
222
223		225	return buf_size;
224			}
225
226		10	static av_cold int roq_decode_end(AVCodecContext *avctx)
227			{
228		10	RoqContext *s = avctx->priv_data;
229
230		10	av_frame_free(&s->current_frame);
231		10	av_frame_free(&s->last_frame);
232
233		10	return 0;
234			}
235
236			AVCodec ff_roq_decoder = {
237			.name = "roqvideo",
238			.long_name = NULL_IF_CONFIG_SMALL("id RoQ video"),
239			.type = AVMEDIA_TYPE_VIDEO,
240			.id = AV_CODEC_ID_ROQ,
241			.priv_data_size = sizeof(RoqContext),
242			.init = roq_decode_init,
243			.close = roq_decode_end,
244			.decode = roq_decode_frame,
245			.capabilities = AV_CODEC_CAP_DR1,
246			.caps_internal = FF_CODEC_CAP_INIT_CLEANUP,
247			};