FFmpeg coverage

GCC Code Coverage Report

Directory:	../../../ffmpeg/		Exec	Total	Coverage
File:	src/libavcodec/wmv2enc.c	Lines:	110	116	94.8 %
Date:	2021-04-14 23:45:22	Branches:	34	48	70.8 %


/*
 * Copyright (c) 2002 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
 */

#include "avcodec.h"
#include "h263.h"
#include "mpegvideo.h"
#include "msmpeg4.h"
#include "msmpeg4data.h"
#include "wmv2.h"


static int encode_ext_header(Wmv2Context *w)
{
    MpegEncContext *const s = &w->s;
    PutBitContext pb;
    int code;

    init_put_bits(&pb, s->avctx->extradata, s->avctx->extradata_size);

    put_bits(&pb, 5, s->avctx->time_base.den / s->avctx->time_base.num); // yes 29.97 -> 29
    put_bits(&pb, 11, FFMIN(s->bit_rate / 1024, 2047));

    put_bits(&pb, 1, w->mspel_bit        = 1);
    put_bits(&pb, 1, s->loop_filter);
    put_bits(&pb, 1, w->abt_flag         = 1);
    put_bits(&pb, 1, w->j_type_bit       = 1);
    put_bits(&pb, 1, w->top_left_mv_flag = 0);
    put_bits(&pb, 1, w->per_mb_rl_bit    = 1);
    put_bits(&pb, 3, code                = 1);

    flush_put_bits(&pb);

    s->slice_height = s->mb_height / code;

    return 0;
}

static av_cold int wmv2_encode_init(AVCodecContext *avctx)
{
    Wmv2Context *const w = avctx->priv_data;

    if (ff_mpv_encode_init(avctx) < 0)
        return -1;

    ff_wmv2_common_init(w);

    avctx->extradata_size = 4;
    avctx->extradata      = av_mallocz(avctx->extradata_size + AV_INPUT_BUFFER_PADDING_SIZE);
    if (!avctx->extradata)
        return AVERROR(ENOMEM);

    encode_ext_header(w);

    return 0;
}

int ff_wmv2_encode_picture_header(MpegEncContext *s, int picture_number)
{
    Wmv2Context *const w = (Wmv2Context *) s;

    put_bits(&s->pb, 1, s->pict_type - 1);
    if (s->pict_type == AV_PICTURE_TYPE_I)
        put_bits(&s->pb, 7, 0);
    put_bits(&s->pb, 5, s->qscale);

    s->dc_table_index  = 1;
    s->mv_table_index  = 1; /* only if P-frame */
    s->per_mb_rl_table = 0;
    s->mspel           = 0;
    w->per_mb_abt      = 0;
    w->abt_type        = 0;
    w->j_type          = 0;

    av_assert0(s->flipflop_rounding);

    if (s->pict_type == AV_PICTURE_TYPE_I) {
        av_assert0(s->no_rounding == 1);
        if (w->j_type_bit)
            put_bits(&s->pb, 1, w->j_type);

        if (w->per_mb_rl_bit)
            put_bits(&s->pb, 1, s->per_mb_rl_table);

        if (!s->per_mb_rl_table) {
            ff_msmpeg4_code012(&s->pb, s->rl_chroma_table_index);
            ff_msmpeg4_code012(&s->pb, s->rl_table_index);
        }

        put_bits(&s->pb, 1, s->dc_table_index);

        s->inter_intra_pred = 0;
    } else {
        int cbp_index;

        put_bits(&s->pb, 2, SKIP_TYPE_NONE);

        ff_msmpeg4_code012(&s->pb, cbp_index = 0);
        w->cbp_table_index = wmv2_get_cbp_table_index(s, cbp_index);

        if (w->mspel_bit)
            put_bits(&s->pb, 1, s->mspel);

        if (w->abt_flag) {
            put_bits(&s->pb, 1, w->per_mb_abt ^ 1);
            if (!w->per_mb_abt)
                ff_msmpeg4_code012(&s->pb, w->abt_type);
        }

        if (w->per_mb_rl_bit)
            put_bits(&s->pb, 1, s->per_mb_rl_table);

        if (!s->per_mb_rl_table) {
            ff_msmpeg4_code012(&s->pb, s->rl_table_index);
            s->rl_chroma_table_index = s->rl_table_index;
        }
        put_bits(&s->pb, 1, s->dc_table_index);
        put_bits(&s->pb, 1, s->mv_table_index);

        s->inter_intra_pred = 0; // (s->width * s->height < 320 * 240 && s->bit_rate <= II_BITRATE);
    }
    s->esc3_level_length = 0;
    s->esc3_run_length   = 0;

    return 0;
}

/* Nearly identical to wmv1 but that is just because we do not use the
 * useless M$ crap features. It is duplicated here in case someone wants
 * to add support for these crap features. */
void ff_wmv2_encode_mb(MpegEncContext *s, int16_t block[6][64],
                       int motion_x, int motion_y)
{
    Wmv2Context *const w = (Wmv2Context *) s;
    int cbp, coded_cbp, i;
    int pred_x, pred_y;
    uint8_t *coded_block;

    ff_msmpeg4_handle_slices(s);

    if (!s->mb_intra) {
        /* compute cbp */
        cbp = 0;
        for (i = 0; i < 6; i++)
            if (s->block_last_index[i] >= 0)
                cbp |= 1 << (5 - i);

        put_bits(&s->pb,
                 ff_wmv2_inter_table[w->cbp_table_index][cbp + 64][1],
                 ff_wmv2_inter_table[w->cbp_table_index][cbp + 64][0]);

        s->misc_bits += get_bits_diff(s);
        /* motion vector */
        ff_h263_pred_motion(s, 0, 0, &pred_x, &pred_y);
        ff_msmpeg4_encode_motion(s, motion_x - pred_x,
                                 motion_y - pred_y);
        s->mv_bits += get_bits_diff(s);
    } else {
        /* compute cbp */
        cbp       = 0;
        coded_cbp = 0;
        for (i = 0; i < 6; i++) {
            int val, pred;
            val  = (s->block_last_index[i] >= 1);
            cbp |= val << (5 - i);
            if (i < 4) {
                /* predict value for close blocks only for luma */
                pred         = ff_msmpeg4_coded_block_pred(s, i, &coded_block);
                *coded_block = val;
                val          = val ^ pred;
            }
            coded_cbp |= val << (5 - i);
        }

        if (s->pict_type == AV_PICTURE_TYPE_I)
            put_bits(&s->pb,
                     ff_msmp4_mb_i_table[coded_cbp][1],
                     ff_msmp4_mb_i_table[coded_cbp][0]);
        else
            put_bits(&s->pb,
                     ff_wmv2_inter_table[w->cbp_table_index][cbp][1],
                     ff_wmv2_inter_table[w->cbp_table_index][cbp][0]);
        put_bits(&s->pb, 1, 0);         /* no AC prediction yet */
        if (s->inter_intra_pred) {
            s->h263_aic_dir = 0;
            put_bits(&s->pb,
                     ff_table_inter_intra[s->h263_aic_dir][1],
                     ff_table_inter_intra[s->h263_aic_dir][0]);
        }
        s->misc_bits += get_bits_diff(s);
    }

    for (i = 0; i < 6; i++)
        ff_msmpeg4_encode_block(s, block[i], i);
    if (s->mb_intra)
        s->i_tex_bits += get_bits_diff(s);
    else
        s->p_tex_bits += get_bits_diff(s);
}

static const AVClass wmv2_class = {
    .class_name = "wmv2 encoder",
    .item_name  = av_default_item_name,
    .option     = ff_mpv_generic_options,
    .version    = LIBAVUTIL_VERSION_INT,
};

AVCodec ff_wmv2_encoder = {
    .name           = "wmv2",
    .long_name      = NULL_IF_CONFIG_SMALL("Windows Media Video 8"),
    .type           = AVMEDIA_TYPE_VIDEO,
    .id             = AV_CODEC_ID_WMV2,
    .priv_data_size = sizeof(Wmv2Context),
    .priv_class     = &wmv2_class,
    .init           = wmv2_encode_init,
    .encode2        = ff_mpv_encode_picture,
    .close          = ff_mpv_encode_end,
    .caps_internal  = FF_CODEC_CAP_INIT_CLEANUP,
    .pix_fmts       = (const enum AVPixelFormat[]) { AV_PIX_FMT_YUV420P,
                                                     AV_PIX_FMT_NONE },
};


Generated by: GCOVR (Version 4.2)

Line	Branch	Exec	Source
1			/*
2			* Copyright (c) 2002 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			#include "avcodec.h"
22			#include "h263.h"
23			#include "mpegvideo.h"
24			#include "msmpeg4.h"
25			#include "msmpeg4data.h"
26			#include "wmv2.h"
27
28
29		4	static int encode_ext_header(Wmv2Context *w)
30			{
31		4	MpegEncContext *const s = &w->s;
32			PutBitContext pb;
33			int code;
34
35		4	init_put_bits(&pb, s->avctx->extradata, s->avctx->extradata_size);
36
37		4	put_bits(&pb, 5, s->avctx->time_base.den / s->avctx->time_base.num); // yes 29.97 -> 29
38	✓✗	4	put_bits(&pb, 11, FFMIN(s->bit_rate / 1024, 2047));
39
40		4	put_bits(&pb, 1, w->mspel_bit = 1);
41		4	put_bits(&pb, 1, s->loop_filter);
42		4	put_bits(&pb, 1, w->abt_flag = 1);
43		4	put_bits(&pb, 1, w->j_type_bit = 1);
44		4	put_bits(&pb, 1, w->top_left_mv_flag = 0);
45		4	put_bits(&pb, 1, w->per_mb_rl_bit = 1);
46		4	put_bits(&pb, 3, code = 1);
47
48		4	flush_put_bits(&pb);
49
50		4	s->slice_height = s->mb_height / code;
51
52		4	return 0;
53			}
54
55		4	static av_cold int wmv2_encode_init(AVCodecContext *avctx)
56			{
57		4	Wmv2Context *const w = avctx->priv_data;
58
59	✗✓	4	if (ff_mpv_encode_init(avctx) < 0)
60			return -1;
61
62		4	ff_wmv2_common_init(w);
63
64		4	avctx->extradata_size = 4;
65		4	avctx->extradata = av_mallocz(avctx->extradata_size + AV_INPUT_BUFFER_PADDING_SIZE);
66	✗✓	4	if (!avctx->extradata)
67			return AVERROR(ENOMEM);
68
69		4	encode_ext_header(w);
70
71		4	return 0;
72			}
73
74		200	int ff_wmv2_encode_picture_header(MpegEncContext *s, int picture_number)
75			{
76		200	Wmv2Context const w = (Wmv2Context ) s;
77
78		200	put_bits(&s->pb, 1, s->pict_type - 1);
79	✓✓	200	if (s->pict_type == AV_PICTURE_TYPE_I)
80		20	put_bits(&s->pb, 7, 0);
81		200	put_bits(&s->pb, 5, s->qscale);
82
83		200	s->dc_table_index = 1;
84		200	s->mv_table_index = 1; /* only if P-frame */
85		200	s->per_mb_rl_table = 0;
86		200	s->mspel = 0;
87		200	w->per_mb_abt = 0;
88		200	w->abt_type = 0;
89		200	w->j_type = 0;
90
91	✗✓	200	av_assert0(s->flipflop_rounding);
92
93	✓✓	200	if (s->pict_type == AV_PICTURE_TYPE_I) {
94	✗✓	20	av_assert0(s->no_rounding == 1);
95	✓✗	20	if (w->j_type_bit)
96		20	put_bits(&s->pb, 1, w->j_type);
97
98	✓✗	20	if (w->per_mb_rl_bit)
99		20	put_bits(&s->pb, 1, s->per_mb_rl_table);
100
101	✓✗	20	if (!s->per_mb_rl_table) {
102		20	ff_msmpeg4_code012(&s->pb, s->rl_chroma_table_index);
103		20	ff_msmpeg4_code012(&s->pb, s->rl_table_index);
104			}
105
106		20	put_bits(&s->pb, 1, s->dc_table_index);
107
108		20	s->inter_intra_pred = 0;
109			} else {
110			int cbp_index;
111
112		180	put_bits(&s->pb, 2, SKIP_TYPE_NONE);
113
114		180	ff_msmpeg4_code012(&s->pb, cbp_index = 0);
115		180	w->cbp_table_index = wmv2_get_cbp_table_index(s, cbp_index);
116
117	✓✗	180	if (w->mspel_bit)
118		180	put_bits(&s->pb, 1, s->mspel);
119
120	✓✗	180	if (w->abt_flag) {
121		180	put_bits(&s->pb, 1, w->per_mb_abt ^ 1);
122	✓✗	180	if (!w->per_mb_abt)
123		180	ff_msmpeg4_code012(&s->pb, w->abt_type);
124			}
125
126	✓✗	180	if (w->per_mb_rl_bit)
127		180	put_bits(&s->pb, 1, s->per_mb_rl_table);
128
129	✓✗	180	if (!s->per_mb_rl_table) {
130		180	ff_msmpeg4_code012(&s->pb, s->rl_table_index);
131		180	s->rl_chroma_table_index = s->rl_table_index;
132			}
133		180	put_bits(&s->pb, 1, s->dc_table_index);
134		180	put_bits(&s->pb, 1, s->mv_table_index);
135
136		180	s->inter_intra_pred = 0; // (s->width * s->height < 320 * 240 && s->bit_rate <= II_BITRATE);
137			}
138		200	s->esc3_level_length = 0;
139		200	s->esc3_run_length = 0;
140
141		200	return 0;
142			}
143
144			/* Nearly identical to wmv1 but that is just because we do not use the
145			* useless M$ crap features. It is duplicated here in case someone wants
146			* to add support for these crap features. */
147		59850	void ff_wmv2_encode_mb(MpegEncContext *s, int16_t block[6][64],
148			int motion_x, int motion_y)
149			{
150		59850	Wmv2Context const w = (Wmv2Context ) s;
151			int cbp, coded_cbp, i;
152			int pred_x, pred_y;
153			uint8_t *coded_block;
154
155		59850	ff_msmpeg4_handle_slices(s);
156
157	✓✓	59850	if (!s->mb_intra) {
158			/* compute cbp */
159		51711	cbp = 0;
160	✓✓	361977	for (i = 0; i < 6; i++)
161	✓✓	310266	if (s->block_last_index[i] >= 0)
162		109321	cbp \|= 1 << (5 - i);
163
164		51711	put_bits(&s->pb,
165		51711	ff_wmv2_inter_table[w->cbp_table_index][cbp + 64][1],
166		51711	ff_wmv2_inter_table[w->cbp_table_index][cbp + 64][0]);
167
168		51711	s->misc_bits += get_bits_diff(s);
169			/* motion vector */
170		51711	ff_h263_pred_motion(s, 0, 0, &pred_x, &pred_y);
171		51711	ff_msmpeg4_encode_motion(s, motion_x - pred_x,
172			motion_y - pred_y);
173		51711	s->mv_bits += get_bits_diff(s);
174			} else {
175			/* compute cbp */
176		8139	cbp = 0;
177		8139	coded_cbp = 0;
178	✓✓	56973	for (i = 0; i < 6; i++) {
179			int val, pred;
180		48834	val = (s->block_last_index[i] >= 1);
181		48834	cbp \|= val << (5 - i);
182	✓✓	48834	if (i < 4) {
183			/* predict value for close blocks only for luma */
184		32556	pred = ff_msmpeg4_coded_block_pred(s, i, &coded_block);
185		32556	*coded_block = val;
186		32556	val = val ^ pred;
187			}
188		48834	coded_cbp \|= val << (5 - i);
189			}
190
191	✓✓	8139	if (s->pict_type == AV_PICTURE_TYPE_I)
192		5985	put_bits(&s->pb,
193		5985	ff_msmp4_mb_i_table[coded_cbp][1],
194		5985	ff_msmp4_mb_i_table[coded_cbp][0]);
195			else
196		2154	put_bits(&s->pb,
197		2154	ff_wmv2_inter_table[w->cbp_table_index][cbp][1],
198		2154	ff_wmv2_inter_table[w->cbp_table_index][cbp][0]);
199		8139	put_bits(&s->pb, 1, 0); /* no AC prediction yet */
200	✗✓	8139	if (s->inter_intra_pred) {
201			s->h263_aic_dir = 0;
202			put_bits(&s->pb,
203			ff_table_inter_intra[s->h263_aic_dir][1],
204			ff_table_inter_intra[s->h263_aic_dir][0]);
205			}
206		8139	s->misc_bits += get_bits_diff(s);
207			}
208
209	✓✓	418950	for (i = 0; i < 6; i++)
210		359100	ff_msmpeg4_encode_block(s, block[i], i);
211	✓✓	59850	if (s->mb_intra)
212		8139	s->i_tex_bits += get_bits_diff(s);
213			else
214		51711	s->p_tex_bits += get_bits_diff(s);
215		59850	}
216
217			static const AVClass wmv2_class = {
218			.class_name = "wmv2 encoder",
219			.item_name = av_default_item_name,
220			.option = ff_mpv_generic_options,
221			.version = LIBAVUTIL_VERSION_INT,
222			};
223
224			AVCodec ff_wmv2_encoder = {
225			.name = "wmv2",
226			.long_name = NULL_IF_CONFIG_SMALL("Windows Media Video 8"),
227			.type = AVMEDIA_TYPE_VIDEO,
228			.id = AV_CODEC_ID_WMV2,
229			.priv_data_size = sizeof(Wmv2Context),
230			.priv_class = &wmv2_class,
231			.init = wmv2_encode_init,
232			.encode2 = ff_mpv_encode_picture,
233			.close = ff_mpv_encode_end,
234			.caps_internal = FF_CODEC_CAP_INIT_CLEANUP,
235			.pix_fmts = (const enum AVPixelFormat[]) { AV_PIX_FMT_YUV420P,
236			AV_PIX_FMT_NONE },
237			};