FFmpeg coverage

GCC Code Coverage Report

Directory:	../../../ffmpeg/		Exec	Total	Coverage
File:	src/libavcodec/ffv1.c	Lines:	110	122	90.2 %
Date:	2020-09-25 23:16:12	Branches:	51	66	77.3 %


/*
 * FFV1 codec for libavcodec
 *
 * Copyright (c) 2003-2013 Michael Niedermayer <michaelni@gmx.at>
 *
 * 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
 * FF Video Codec 1 (a lossless codec)
 */

#include "libavutil/attributes.h"
#include "libavutil/avassert.h"
#include "libavutil/crc.h"
#include "libavutil/opt.h"
#include "libavutil/imgutils.h"
#include "libavutil/pixdesc.h"

#include "avcodec.h"
#include "internal.h"
#include "rangecoder.h"
#include "mathops.h"
#include "ffv1.h"

av_cold int ff_ffv1_common_init(AVCodecContext *avctx)
{
    FFV1Context *s = avctx->priv_data;

    if (!avctx->width || !avctx->height)
        return AVERROR_INVALIDDATA;

    s->avctx = avctx;
    s->flags = avctx->flags;

    s->picture.f = av_frame_alloc();
    s->last_picture.f = av_frame_alloc();
    if (!s->picture.f || !s->last_picture.f)
        return AVERROR(ENOMEM);

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

    // defaults
    s->num_h_slices = 1;
    s->num_v_slices = 1;

    return 0;
}

av_cold int ff_ffv1_init_slice_state(FFV1Context *f, FFV1Context *fs)
{
    int j, i;

    fs->plane_count  = f->plane_count;
    fs->transparency = f->transparency;
    for (j = 0; j < f->plane_count; j++) {
        PlaneContext *const p = &fs->plane[j];

        if (fs->ac != AC_GOLOMB_RICE) {
            if (!p->state)
                p->state = av_malloc_array(p->context_count, CONTEXT_SIZE *
                                     sizeof(uint8_t));
            if (!p->state)
                return AVERROR(ENOMEM);
        } else {
            if (!p->vlc_state) {
                p->vlc_state = av_mallocz_array(p->context_count, sizeof(VlcState));
                if (!p->vlc_state)
                    return AVERROR(ENOMEM);
                for (i = 0; i < p->context_count; i++) {
                    p->vlc_state[i].error_sum = 4;
                    p->vlc_state[i].count     = 1;
                }
            }
        }
    }

    if (fs->ac == AC_RANGE_CUSTOM_TAB) {
        //FIXME only redo if state_transition changed
        for (j = 1; j < 256; j++) {
            fs->c. one_state[      j] = f->state_transition[j];
            fs->c.zero_state[256 - j] = 256 - fs->c.one_state[j];
        }
    }

    return 0;
}

av_cold int ff_ffv1_init_slices_state(FFV1Context *f)
{
    int i, ret;
    for (i = 0; i < f->max_slice_count; i++) {
        FFV1Context *fs = f->slice_context[i];
        if ((ret = ff_ffv1_init_slice_state(f, fs)) < 0)
            return AVERROR(ENOMEM);
    }
    return 0;
}

av_cold int ff_ffv1_init_slice_contexts(FFV1Context *f)
{
    int i, max_slice_count = f->num_h_slices * f->num_v_slices;

    av_assert0(max_slice_count > 0);

    for (i = 0; i < max_slice_count;) {
        int sx          = i % f->num_h_slices;
        int sy          = i / f->num_h_slices;
        int sxs         = f->avctx->width  *  sx      / f->num_h_slices;
        int sxe         = f->avctx->width  * (sx + 1) / f->num_h_slices;
        int sys         = f->avctx->height *  sy      / f->num_v_slices;
        int sye         = f->avctx->height * (sy + 1) / f->num_v_slices;
        FFV1Context *fs = av_mallocz(sizeof(*fs));

        if (!fs)
            goto memfail;

        f->slice_context[i++] = fs;
        memcpy(fs, f, sizeof(*fs));
        memset(fs->rc_stat2, 0, sizeof(fs->rc_stat2));

        fs->slice_width  = sxe - sxs;
        fs->slice_height = sye - sys;
        fs->slice_x      = sxs;
        fs->slice_y      = sys;

        fs->sample_buffer = av_malloc_array((fs->width + 6), 3 * MAX_PLANES *
                                      sizeof(*fs->sample_buffer));
        fs->sample_buffer32 = av_malloc_array((fs->width + 6), 3 * MAX_PLANES *
                                        sizeof(*fs->sample_buffer32));
        if (!fs->sample_buffer || !fs->sample_buffer32)
            goto memfail;
    }
    f->max_slice_count = max_slice_count;
    return 0;

memfail:
    f->max_slice_count = i;
    return AVERROR(ENOMEM);
}

int ff_ffv1_allocate_initial_states(FFV1Context *f)
{
    int i;

    for (i = 0; i < f->quant_table_count; i++) {
        f->initial_states[i] = av_malloc_array(f->context_count[i],
                                         sizeof(*f->initial_states[i]));
        if (!f->initial_states[i])
            return AVERROR(ENOMEM);
        memset(f->initial_states[i], 128,
               f->context_count[i] * sizeof(*f->initial_states[i]));
    }
    return 0;
}

void ff_ffv1_clear_slice_state(FFV1Context *f, FFV1Context *fs)
{
    int i, j;

    for (i = 0; i < f->plane_count; i++) {
        PlaneContext *p = &fs->plane[i];

        p->interlace_bit_state[0] = 128;
        p->interlace_bit_state[1] = 128;

        if (fs->ac != AC_GOLOMB_RICE) {
            if (f->initial_states[p->quant_table_index]) {
                memcpy(p->state, f->initial_states[p->quant_table_index],
                       CONTEXT_SIZE * p->context_count);
            } else
                memset(p->state, 128, CONTEXT_SIZE * p->context_count);
        } else {
            for (j = 0; j < p->context_count; j++) {
                p->vlc_state[j].drift     = 0;
                p->vlc_state[j].error_sum = 4;    //FFMAX((RANGE + 32)/64, 2);
                p->vlc_state[j].bias      = 0;
                p->vlc_state[j].count     = 1;
            }
        }
    }
}


av_cold int ff_ffv1_close(AVCodecContext *avctx)
{
    FFV1Context *s = avctx->priv_data;
    int i, j;

    if (s->picture.f)
        ff_thread_release_buffer(avctx, &s->picture);
    av_frame_free(&s->picture.f);

    if (s->last_picture.f)
        ff_thread_release_buffer(avctx, &s->last_picture);
    av_frame_free(&s->last_picture.f);

    for (j = 0; j < s->max_slice_count; j++) {
        FFV1Context *fs = s->slice_context[j];
        for (i = 0; i < s->plane_count; i++) {
            PlaneContext *p = &fs->plane[i];

            av_freep(&p->state);
            av_freep(&p->vlc_state);
        }
        av_freep(&fs->sample_buffer);
        av_freep(&fs->sample_buffer32);
    }

    av_freep(&avctx->stats_out);
    for (j = 0; j < s->quant_table_count; j++) {
        av_freep(&s->initial_states[j]);
        for (i = 0; i < s->max_slice_count; i++) {
            FFV1Context *sf = s->slice_context[i];
            av_freep(&sf->rc_stat2[j]);
        }
        av_freep(&s->rc_stat2[j]);
    }

    for (i = 0; i < s->max_slice_count; i++)
        av_freep(&s->slice_context[i]);

    return 0;
}


Generated by: GCOVR (Version 4.2)

Line	Branch	Exec	Source
1			/*
2			* FFV1 codec for libavcodec
3			*
4			* Copyright (c) 2003-2013 Michael Niedermayer <michaelni@gmx.at>
5			*
6			* This file is part of FFmpeg.
7			*
8			* FFmpeg is free software; you can redistribute it and/or
9			* modify it under the terms of the GNU Lesser General Public
10			* License as published by the Free Software Foundation; either
11			* version 2.1 of the License, or (at your option) any later version.
12			*
13			* FFmpeg is distributed in the hope that it will be useful,
14			* but WITHOUT ANY WARRANTY; without even the implied warranty of
15			* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16			* Lesser General Public License for more details.
17			*
18			* You should have received a copy of the GNU Lesser General Public
19			* License along with FFmpeg; if not, write to the Free Software
20			* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21			*/
22
23			/**
24			* @file
25			* FF Video Codec 1 (a lossless codec)
26			*/
27
28			#include "libavutil/attributes.h"
29			#include "libavutil/avassert.h"
30			#include "libavutil/crc.h"
31			#include "libavutil/opt.h"
32			#include "libavutil/imgutils.h"
33			#include "libavutil/pixdesc.h"
34
35			#include "avcodec.h"
36			#include "internal.h"
37			#include "rangecoder.h"
38			#include "mathops.h"
39			#include "ffv1.h"
40
41		85	av_cold int ff_ffv1_common_init(AVCodecContext *avctx)
42			{
43		85	FFV1Context *s = avctx->priv_data;
44
45	✓✗✗✓	85	if (!avctx->width \|\| !avctx->height)
46			return AVERROR_INVALIDDATA;
47
48		85	s->avctx = avctx;
49		85	s->flags = avctx->flags;
50
51		85	s->picture.f = av_frame_alloc();
52		85	s->last_picture.f = av_frame_alloc();
53	✓✗✗✓	85	if (!s->picture.f \|\| !s->last_picture.f)
54			return AVERROR(ENOMEM);
55
56		85	s->width = avctx->width;
57		85	s->height = avctx->height;
58
59			// defaults
60		85	s->num_h_slices = 1;
61		85	s->num_v_slices = 1;
62
63		85	return 0;
64			}
65
66		10104	av_cold int ff_ffv1_init_slice_state(FFV1Context f, FFV1Context fs)
67			{
68			int j, i;
69
70		10104	fs->plane_count = f->plane_count;
71		10104	fs->transparency = f->transparency;
72	✓✓	30312	for (j = 0; j < f->plane_count; j++) {
73		20208	PlaneContext *const p = &fs->plane[j];
74
75	✓✓	20208	if (fs->ac != AC_GOLOMB_RICE) {
76	✓✓	9888	if (!p->state)
77		480	p->state = av_malloc_array(p->context_count, CONTEXT_SIZE *
78			sizeof(uint8_t));
79	✗✓	9888	if (!p->state)
80			return AVERROR(ENOMEM);
81			} else {
82	✓✓	10320	if (!p->vlc_state) {
83		520	p->vlc_state = av_mallocz_array(p->context_count, sizeof(VlcState));
84	✗✓	520	if (!p->vlc_state)
85			return AVERROR(ENOMEM);
86	✓✓	213640	for (i = 0; i < p->context_count; i++) {
87		213120	p->vlc_state[i].error_sum = 4;
88		213120	p->vlc_state[i].count = 1;
89			}
90			}
91			}
92			}
93
94	✓✓	10104	if (fs->ac == AC_RANGE_CUSTOM_TAB) {
95			//FIXME only redo if state_transition changed
96	✓✓	1265664	for (j = 1; j < 256; j++) {
97		1260720	fs->c. one_state[ j] = f->state_transition[j];
98		1260720	fs->c.zero_state[256 - j] = 256 - fs->c.one_state[j];
99			}
100			}
101
102		10104	return 0;
103			}
104
105		28	av_cold int ff_ffv1_init_slices_state(FFV1Context *f)
106			{
107			int i, ret;
108	✓✓	128	for (i = 0; i < f->max_slice_count; i++) {
109		100	FFV1Context *fs = f->slice_context[i];
110	✗✓	100	if ((ret = ff_ffv1_init_slice_state(f, fs)) < 0)
111			return AVERROR(ENOMEM);
112			}
113		28	return 0;
114			}
115
116		85	av_cold int ff_ffv1_init_slice_contexts(FFV1Context *f)
117			{
118		85	int i, max_slice_count = f->num_h_slices * f->num_v_slices;
119
120	✗✓	85	av_assert0(max_slice_count > 0);
121
122	✓✓	389	for (i = 0; i < max_slice_count;) {
123		304	int sx = i % f->num_h_slices;
124		304	int sy = i / f->num_h_slices;
125		304	int sxs = f->avctx->width * sx / f->num_h_slices;
126		304	int sxe = f->avctx->width * (sx + 1) / f->num_h_slices;
127		304	int sys = f->avctx->height * sy / f->num_v_slices;
128		304	int sye = f->avctx->height * (sy + 1) / f->num_v_slices;
129		304	FFV1Context fs = av_mallocz(sizeof(fs));
130
131	✗✓	304	if (!fs)
132			goto memfail;
133
134		304	f->slice_context[i++] = fs;
135		304	memcpy(fs, f, sizeof(*fs));
136		304	memset(fs->rc_stat2, 0, sizeof(fs->rc_stat2));
137
138		304	fs->slice_width = sxe - sxs;
139		304	fs->slice_height = sye - sys;
140		304	fs->slice_x = sxs;
141		304	fs->slice_y = sys;
142
143		304	fs->sample_buffer = av_malloc_array((fs->width + 6), 3 * MAX_PLANES *
144			sizeof(*fs->sample_buffer));
145		304	fs->sample_buffer32 = av_malloc_array((fs->width + 6), 3 * MAX_PLANES *
146			sizeof(*fs->sample_buffer32));
147	✓✗✗✓	304	if (!fs->sample_buffer \|\| !fs->sample_buffer32)
148			goto memfail;
149			}
150		85	f->max_slice_count = max_slice_count;
151		85	return 0;
152
153			memfail:
154			f->max_slice_count = i;
155			return AVERROR(ENOMEM);
156			}
157
158		77	int ff_ffv1_allocate_initial_states(FFV1Context *f)
159			{
160			int i;
161
162	✓✓	231	for (i = 0; i < f->quant_table_count; i++) {
163		154	f->initial_states[i] = av_malloc_array(f->context_count[i],
164			sizeof(*f->initial_states[i]));
165	✗✓	154	if (!f->initial_states[i])
166			return AVERROR(ENOMEM);
167		154	memset(f->initial_states[i], 128,
168		154	f->context_count[i] * sizeof(*f->initial_states[i]));
169			}
170		77	return 0;
171			}
172
173		1104	void ff_ffv1_clear_slice_state(FFV1Context f, FFV1Context fs)
174			{
175			int i, j;
176
177	✓✓	3312	for (i = 0; i < f->plane_count; i++) {
178		2208	PlaneContext *p = &fs->plane[i];
179
180		2208	p->interlace_bit_state[0] = 128;
181		2208	p->interlace_bit_state[1] = 128;
182
183	✓✓	2208	if (fs->ac != AC_GOLOMB_RICE) {
184	✓✗	1056	if (f->initial_states[p->quant_table_index]) {
185		1056	memcpy(p->state, f->initial_states[p->quant_table_index],
186		1056	CONTEXT_SIZE * p->context_count);
187			} else
188			memset(p->state, 128, CONTEXT_SIZE * p->context_count);
189			} else {
190	✓✓	768384	for (j = 0; j < p->context_count; j++) {
191		767232	p->vlc_state[j].drift = 0;
192		767232	p->vlc_state[j].error_sum = 4; //FFMAX((RANGE + 32)/64, 2);
193		767232	p->vlc_state[j].bias = 0;
194		767232	p->vlc_state[j].count = 1;
195			}
196			}
197			}
198		1104	}
199
200
201		85	av_cold int ff_ffv1_close(AVCodecContext *avctx)
202			{
203		85	FFV1Context *s = avctx->priv_data;
204			int i, j;
205
206	✓✗	85	if (s->picture.f)
207		85	ff_thread_release_buffer(avctx, &s->picture);
208		85	av_frame_free(&s->picture.f);
209
210	✓✗	85	if (s->last_picture.f)
211		85	ff_thread_release_buffer(avctx, &s->last_picture);
212		85	av_frame_free(&s->last_picture.f);
213
214	✓✓	389	for (j = 0; j < s->max_slice_count; j++) {
215		304	FFV1Context *fs = s->slice_context[j];
216	✓✓	912	for (i = 0; i < s->plane_count; i++) {
217		608	PlaneContext *p = &fs->plane[i];
218
219		608	av_freep(&p->state);
220		608	av_freep(&p->vlc_state);
221			}
222		304	av_freep(&fs->sample_buffer);
223		304	av_freep(&fs->sample_buffer32);
224			}
225
226		85	av_freep(&avctx->stats_out);
227	✓✓	239	for (j = 0; j < s->quant_table_count; j++) {
228		154	av_freep(&s->initial_states[j]);
229	✓✓	746	for (i = 0; i < s->max_slice_count; i++) {
230		592	FFV1Context *sf = s->slice_context[i];
231		592	av_freep(&sf->rc_stat2[j]);
232			}
233		154	av_freep(&s->rc_stat2[j]);
234			}
235
236	✓✓	389	for (i = 0; i < s->max_slice_count; i++)
237		304	av_freep(&s->slice_context[i]);
238
239		85	return 0;
240			}