FFmpeg coverage

GCC Code Coverage Report

Directory:	../../../ffmpeg/		Exec	Total	Coverage
File:	src/libavcodec/bsf.c	Lines:	165	276	59.8 %
Date:	2021-01-21 13:05:02	Branches:	73	160	45.6 %


/*
 * 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 <string.h>

#include "libavutil/avassert.h"
#include "libavutil/log.h"
#include "libavutil/mem.h"
#include "libavutil/opt.h"
#include "libavutil/avstring.h"
#include "libavutil/bprint.h"

#include "bsf.h"
#include "bsf_internal.h"
#include "codec_desc.h"
#include "codec_par.h"

#define IS_EMPTY(pkt) (!(pkt)->data && !(pkt)->side_data_elems)

struct AVBSFInternal {
    AVPacket *buffer_pkt;
    int eof;
};

void av_bsf_free(AVBSFContext **pctx)
{
    AVBSFContext *ctx;

    if (!pctx || !*pctx)
        return;
    ctx = *pctx;

    if (ctx->filter->close)
        ctx->filter->close(ctx);
    if (ctx->filter->priv_class && ctx->priv_data)
        av_opt_free(ctx->priv_data);

    if (ctx->internal)
        av_packet_free(&ctx->internal->buffer_pkt);
    av_freep(&ctx->internal);
    av_freep(&ctx->priv_data);

    avcodec_parameters_free(&ctx->par_in);
    avcodec_parameters_free(&ctx->par_out);

    av_freep(pctx);
}

static void *bsf_child_next(void *obj, void *prev)
{
    AVBSFContext *ctx = obj;
    if (!prev && ctx->filter->priv_class)
        return ctx->priv_data;
    return NULL;
}

static const char *bsf_to_name(void *bsf)
{
    return ((AVBSFContext *)bsf)->filter->name;
}

static const AVClass bsf_class = {
    .class_name       = "AVBSFContext",
    .item_name        = bsf_to_name,
    .version          = LIBAVUTIL_VERSION_INT,
    .child_next       = bsf_child_next,
#if FF_API_CHILD_CLASS_NEXT
    .child_class_next = ff_bsf_child_class_next,
#endif
    .child_class_iterate = ff_bsf_child_class_iterate,
    .category         = AV_CLASS_CATEGORY_BITSTREAM_FILTER,
};

const AVClass *av_bsf_get_class(void)
{
    return &bsf_class;
}

int av_bsf_alloc(const AVBitStreamFilter *filter, AVBSFContext **pctx)
{
    AVBSFContext *ctx;
    AVBSFInternal *bsfi;
    int ret;

    ctx = av_mallocz(sizeof(*ctx));
    if (!ctx)
        return AVERROR(ENOMEM);

    ctx->av_class = &bsf_class;
    ctx->filter   = filter;

    ctx->par_in  = avcodec_parameters_alloc();
    ctx->par_out = avcodec_parameters_alloc();
    if (!ctx->par_in || !ctx->par_out) {
        ret = AVERROR(ENOMEM);
        goto fail;
    }

    bsfi = av_mallocz(sizeof(*bsfi));
    if (!bsfi) {
        ret = AVERROR(ENOMEM);
        goto fail;
    }
    ctx->internal = bsfi;

    bsfi->buffer_pkt = av_packet_alloc();
    if (!bsfi->buffer_pkt) {
        ret = AVERROR(ENOMEM);
        goto fail;
    }

    /* allocate priv data and init private options */
    if (filter->priv_data_size) {
        ctx->priv_data = av_mallocz(filter->priv_data_size);
        if (!ctx->priv_data) {
            ret = AVERROR(ENOMEM);
            goto fail;
        }
        if (filter->priv_class) {
            *(const AVClass **)ctx->priv_data = filter->priv_class;
            av_opt_set_defaults(ctx->priv_data);
        }
    }

    *pctx = ctx;
    return 0;
fail:
    av_bsf_free(&ctx);
    return ret;
}

int av_bsf_init(AVBSFContext *ctx)
{
    int ret, i;

    /* check that the codec is supported */
    if (ctx->filter->codec_ids) {
        for (i = 0; ctx->filter->codec_ids[i] != AV_CODEC_ID_NONE; i++)
            if (ctx->par_in->codec_id == ctx->filter->codec_ids[i])
                break;
        if (ctx->filter->codec_ids[i] == AV_CODEC_ID_NONE) {
            const AVCodecDescriptor *desc = avcodec_descriptor_get(ctx->par_in->codec_id);
            av_log(ctx, AV_LOG_ERROR, "Codec '%s' (%d) is not supported by the "
                   "bitstream filter '%s'. Supported codecs are: ",
                   desc ? desc->name : "unknown", ctx->par_in->codec_id, ctx->filter->name);
            for (i = 0; ctx->filter->codec_ids[i] != AV_CODEC_ID_NONE; i++) {
                desc = avcodec_descriptor_get(ctx->filter->codec_ids[i]);
                av_log(ctx, AV_LOG_ERROR, "%s (%d) ",
                       desc ? desc->name : "unknown", ctx->filter->codec_ids[i]);
            }
            av_log(ctx, AV_LOG_ERROR, "\n");
            return AVERROR(EINVAL);
        }
    }

    /* initialize output parameters to be the same as input
     * init below might overwrite that */
    ret = avcodec_parameters_copy(ctx->par_out, ctx->par_in);
    if (ret < 0)
        return ret;

    ctx->time_base_out = ctx->time_base_in;

    if (ctx->filter->init) {
        ret = ctx->filter->init(ctx);
        if (ret < 0)
            return ret;
    }

    return 0;
}

void av_bsf_flush(AVBSFContext *ctx)
{
    AVBSFInternal *bsfi = ctx->internal;

    bsfi->eof = 0;

    av_packet_unref(bsfi->buffer_pkt);

    if (ctx->filter->flush)
        ctx->filter->flush(ctx);
}

int av_bsf_send_packet(AVBSFContext *ctx, AVPacket *pkt)
{
    AVBSFInternal *bsfi = ctx->internal;
    int ret;

    if (!pkt || IS_EMPTY(pkt)) {
        bsfi->eof = 1;
        return 0;
    }

    if (bsfi->eof) {
        av_log(ctx, AV_LOG_ERROR, "A non-NULL packet sent after an EOF.\n");
        return AVERROR(EINVAL);
    }

    if (!IS_EMPTY(bsfi->buffer_pkt))
        return AVERROR(EAGAIN);

    ret = av_packet_make_refcounted(pkt);
    if (ret < 0)
        return ret;
    av_packet_move_ref(bsfi->buffer_pkt, pkt);

    return 0;
}

int av_bsf_receive_packet(AVBSFContext *ctx, AVPacket *pkt)
{
    return ctx->filter->filter(ctx, pkt);
}

int ff_bsf_get_packet(AVBSFContext *ctx, AVPacket **pkt)
{
    AVBSFInternal *bsfi = ctx->internal;
    AVPacket *tmp_pkt;

    if (bsfi->eof)
        return AVERROR_EOF;

    if (IS_EMPTY(bsfi->buffer_pkt))
        return AVERROR(EAGAIN);

    tmp_pkt = av_packet_alloc();
    if (!tmp_pkt)
        return AVERROR(ENOMEM);

    *pkt = bsfi->buffer_pkt;
    bsfi->buffer_pkt = tmp_pkt;

    return 0;
}

int ff_bsf_get_packet_ref(AVBSFContext *ctx, AVPacket *pkt)
{
    AVBSFInternal *bsfi = ctx->internal;

    if (bsfi->eof)
        return AVERROR_EOF;

    if (IS_EMPTY(bsfi->buffer_pkt))
        return AVERROR(EAGAIN);

    av_packet_move_ref(pkt, bsfi->buffer_pkt);

    return 0;
}

typedef struct BSFListContext {
    const AVClass *class;

    AVBSFContext **bsfs;
    int nb_bsfs;

    unsigned idx;           // index of currently processed BSF

    char * item_name;
} BSFListContext;


static int bsf_list_init(AVBSFContext *bsf)
{
    BSFListContext *lst = bsf->priv_data;
    int ret, i;
    const AVCodecParameters *cod_par = bsf->par_in;
    AVRational tb = bsf->time_base_in;

    for (i = 0; i < lst->nb_bsfs; ++i) {
        ret = avcodec_parameters_copy(lst->bsfs[i]->par_in, cod_par);
        if (ret < 0)
            goto fail;

        lst->bsfs[i]->time_base_in = tb;

        ret = av_bsf_init(lst->bsfs[i]);
        if (ret < 0)
            goto fail;

        cod_par = lst->bsfs[i]->par_out;
        tb = lst->bsfs[i]->time_base_out;
    }

    bsf->time_base_out = tb;
    ret = avcodec_parameters_copy(bsf->par_out, cod_par);

fail:
    return ret;
}

static int bsf_list_filter(AVBSFContext *bsf, AVPacket *out)
{
    BSFListContext *lst = bsf->priv_data;
    int ret, eof = 0;

    if (!lst->nb_bsfs)
        return ff_bsf_get_packet_ref(bsf, out);

    while (1) {
        /* get a packet from the previous filter up the chain */
        if (lst->idx)
            ret = av_bsf_receive_packet(lst->bsfs[lst->idx-1], out);
        else
            ret = ff_bsf_get_packet_ref(bsf, out);
        if (ret == AVERROR(EAGAIN)) {
            if (!lst->idx)
                return ret;
            lst->idx--;
            continue;
        } else if (ret == AVERROR_EOF) {
            eof = 1;
        } else if (ret < 0)
            return ret;

        /* send it to the next filter down the chain */
        if (lst->idx < lst->nb_bsfs) {
            ret = av_bsf_send_packet(lst->bsfs[lst->idx], eof ? NULL : out);
            av_assert1(ret != AVERROR(EAGAIN));
            if (ret < 0) {
                av_packet_unref(out);
                return ret;
            }
            lst->idx++;
            eof = 0;
        } else if (eof) {
            return ret;
        } else {
            return 0;
        }
    }
}

static void bsf_list_flush(AVBSFContext *bsf)
{
    BSFListContext *lst = bsf->priv_data;

    for (int i = 0; i < lst->nb_bsfs; i++)
        av_bsf_flush(lst->bsfs[i]);
    lst->idx = 0;
}

static void bsf_list_close(AVBSFContext *bsf)
{
    BSFListContext *lst = bsf->priv_data;
    int i;

    for (i = 0; i < lst->nb_bsfs; ++i)
        av_bsf_free(&lst->bsfs[i]);
    av_freep(&lst->bsfs);
    av_freep(&lst->item_name);
}

static const char *bsf_list_item_name(void *ctx)
{
    static const char *null_filter_name = "null";
    AVBSFContext *bsf_ctx = ctx;
    BSFListContext *lst = bsf_ctx->priv_data;

    if (!lst->nb_bsfs)
        return null_filter_name;

    if (!lst->item_name) {
        int i;
        AVBPrint bp;
        av_bprint_init(&bp, 16, 128);

        av_bprintf(&bp, "bsf_list(");
        for (i = 0; i < lst->nb_bsfs; i++)
            av_bprintf(&bp, i ? ",%s" : "%s", lst->bsfs[i]->filter->name);
        av_bprintf(&bp, ")");

        av_bprint_finalize(&bp, &lst->item_name);
    }

    return lst->item_name;
}

static const AVClass bsf_list_class = {
        .class_name = "bsf_list",
        .item_name  = bsf_list_item_name,
        .version    = LIBAVUTIL_VERSION_INT,
};

const AVBitStreamFilter ff_list_bsf = {
        .name           = "bsf_list",
        .priv_data_size = sizeof(BSFListContext),
        .priv_class     = &bsf_list_class,
        .init           = bsf_list_init,
        .filter         = bsf_list_filter,
        .flush          = bsf_list_flush,
        .close          = bsf_list_close,
};

struct AVBSFList {
    AVBSFContext **bsfs;
    int nb_bsfs;
};

AVBSFList *av_bsf_list_alloc(void)
{
    return av_mallocz(sizeof(AVBSFList));
}

void av_bsf_list_free(AVBSFList **lst)
{
    int i;

    if (!*lst)
        return;

    for (i = 0; i < (*lst)->nb_bsfs; ++i)
        av_bsf_free(&(*lst)->bsfs[i]);
    av_free((*lst)->bsfs);
    av_freep(lst);
}

int av_bsf_list_append(AVBSFList *lst, AVBSFContext *bsf)
{
    return av_dynarray_add_nofree(&lst->bsfs, &lst->nb_bsfs, bsf);
}

static int bsf_list_append_internal(AVBSFList *lst, const char *bsf_name, const char *options, AVDictionary ** options_dict)
{
    int ret;
    const AVBitStreamFilter *filter;
    AVBSFContext *bsf;

    filter = av_bsf_get_by_name(bsf_name);
    if (!filter)
        return AVERROR_BSF_NOT_FOUND;

    ret = av_bsf_alloc(filter, &bsf);
    if (ret < 0)
        return ret;

    if (options && filter->priv_class) {
        const AVOption *opt = av_opt_next(bsf->priv_data, NULL);
        const char * shorthand[2] = {NULL};

        if (opt)
            shorthand[0] = opt->name;

        ret = av_opt_set_from_string(bsf->priv_data, options, shorthand, "=", ":");
        if (ret < 0)
            goto end;
    }

    if (options_dict) {
        ret = av_opt_set_dict2(bsf, options_dict, AV_OPT_SEARCH_CHILDREN);
        if (ret < 0)
            goto end;
    }

    ret = av_bsf_list_append(lst, bsf);

end:
    if (ret < 0)
        av_bsf_free(&bsf);

    return ret;
}

int av_bsf_list_append2(AVBSFList *lst, const char *bsf_name, AVDictionary ** options)
{
    return bsf_list_append_internal(lst, bsf_name, NULL, options);
}

int av_bsf_list_finalize(AVBSFList **lst, AVBSFContext **bsf)
{
    int ret = 0;
    BSFListContext *ctx;

    if ((*lst)->nb_bsfs == 1) {
        *bsf = (*lst)->bsfs[0];
        av_freep(&(*lst)->bsfs);
        (*lst)->nb_bsfs = 0;
        goto end;
    }

    ret = av_bsf_alloc(&ff_list_bsf, bsf);
    if (ret < 0)
        return ret;

    ctx = (*bsf)->priv_data;

    ctx->bsfs = (*lst)->bsfs;
    ctx->nb_bsfs = (*lst)->nb_bsfs;

end:
    av_freep(lst);
    return ret;
}

static int bsf_parse_single(char *str, AVBSFList *bsf_lst)
{
    char *bsf_name, *bsf_options_str;

    bsf_name = av_strtok(str, "=", &bsf_options_str);
    if (!bsf_name)
        return AVERROR(EINVAL);

    return bsf_list_append_internal(bsf_lst, bsf_name, bsf_options_str, NULL);
}

int av_bsf_list_parse_str(const char *str, AVBSFContext **bsf_lst)
{
    AVBSFList *lst;
    char *bsf_str, *buf, *dup, *saveptr;
    int ret;

    if (!str)
        return av_bsf_get_null_filter(bsf_lst);

    lst = av_bsf_list_alloc();
    if (!lst)
        return AVERROR(ENOMEM);

    if (!(dup = buf = av_strdup(str))) {
        ret = AVERROR(ENOMEM);
        goto end;
    }

    while (bsf_str = av_strtok(buf, ",", &saveptr)) {
        ret = bsf_parse_single(bsf_str, lst);
        if (ret < 0)
            goto end;

        buf = NULL;
    }

    ret = av_bsf_list_finalize(&lst, bsf_lst);
end:
    if (ret < 0)
        av_bsf_list_free(&lst);
    av_free(dup);
    return ret;
}

int av_bsf_get_null_filter(AVBSFContext **bsf)
{
    return av_bsf_alloc(&ff_list_bsf, bsf);
}


Generated by: GCOVR (Version 4.2)

Line	Branch	Exec	Source
1			/*
2			* This file is part of FFmpeg.
3			*
4			* FFmpeg is free software; you can redistribute it and/or
5			* modify it under the terms of the GNU Lesser General Public
6			* License as published by the Free Software Foundation; either
7			* version 2.1 of the License, or (at your option) any later version.
8			*
9			* FFmpeg is distributed in the hope that it will be useful,
10			* but WITHOUT ANY WARRANTY; without even the implied warranty of
11			* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12			* Lesser General Public License for more details.
13			*
14			* You should have received a copy of the GNU Lesser General Public
15			* License along with FFmpeg; if not, write to the Free Software
16			* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
17			*/
18
19			#include <string.h>
20
21			#include "libavutil/avassert.h"
22			#include "libavutil/log.h"
23			#include "libavutil/mem.h"
24			#include "libavutil/opt.h"
25			#include "libavutil/avstring.h"
26			#include "libavutil/bprint.h"
27
28			#include "bsf.h"
29			#include "bsf_internal.h"
30			#include "codec_desc.h"
31			#include "codec_par.h"
32
33			#define IS_EMPTY(pkt) (!(pkt)->data && !(pkt)->side_data_elems)
34
35			struct AVBSFInternal {
36			AVPacket *buffer_pkt;
37			int eof;
38			};
39
40		57531	void av_bsf_free(AVBSFContext **pctx)
41			{
42			AVBSFContext *ctx;
43
44	✓✗✓✓	57531	if (!pctx \|\| !*pctx)
45		44065	return;
46		13466	ctx = *pctx;
47
48	✓✓	13466	if (ctx->filter->close)
49		13448	ctx->filter->close(ctx);
50	✓✓✓✗	13466	if (ctx->filter->priv_class && ctx->priv_data)
51		12970	av_opt_free(ctx->priv_data);
52
53	✓✗	13466	if (ctx->internal)
54		13466	av_packet_free(&ctx->internal->buffer_pkt);
55		13466	av_freep(&ctx->internal);
56		13466	av_freep(&ctx->priv_data);
57
58		13466	avcodec_parameters_free(&ctx->par_in);
59		13466	avcodec_parameters_free(&ctx->par_out);
60
61		13466	av_freep(pctx);
62			}
63
64			static void bsf_child_next(void obj, void *prev)
65			{
66			AVBSFContext *ctx = obj;
67			if (!prev && ctx->filter->priv_class)
68			return ctx->priv_data;
69			return NULL;
70			}
71
72			static const char bsf_to_name(void bsf)
73			{
74			return ((AVBSFContext *)bsf)->filter->name;
75			}
76
77			static const AVClass bsf_class = {
78			.class_name = "AVBSFContext",
79			.item_name = bsf_to_name,
80			.version = LIBAVUTIL_VERSION_INT,
81			.child_next = bsf_child_next,
82			#if FF_API_CHILD_CLASS_NEXT
83			.child_class_next = ff_bsf_child_class_next,
84			#endif
85			.child_class_iterate = ff_bsf_child_class_iterate,
86			.category = AV_CLASS_CATEGORY_BITSTREAM_FILTER,
87			};
88
89			const AVClass *av_bsf_get_class(void)
90			{
91			return &bsf_class;
92			}
93
94		13466	int av_bsf_alloc(const AVBitStreamFilter filter, AVBSFContext *pctx)
95			{
96			AVBSFContext *ctx;
97			AVBSFInternal *bsfi;
98			int ret;
99
100		13466	ctx = av_mallocz(sizeof(*ctx));
101	✗✓	13466	if (!ctx)
102			return AVERROR(ENOMEM);
103
104		13466	ctx->av_class = &bsf_class;
105		13466	ctx->filter = filter;
106
107		13466	ctx->par_in = avcodec_parameters_alloc();
108		13466	ctx->par_out = avcodec_parameters_alloc();
109	✓✗✗✓	13466	if (!ctx->par_in \|\| !ctx->par_out) {
110			ret = AVERROR(ENOMEM);
111			goto fail;
112			}
113
114		13466	bsfi = av_mallocz(sizeof(*bsfi));
115	✗✓	13466	if (!bsfi) {
116			ret = AVERROR(ENOMEM);
117			goto fail;
118			}
119		13466	ctx->internal = bsfi;
120
121		13466	bsfi->buffer_pkt = av_packet_alloc();
122	✗✓	13466	if (!bsfi->buffer_pkt) {
123			ret = AVERROR(ENOMEM);
124			goto fail;
125			}
126
127			/* allocate priv data and init private options */
128	✓✓	13466	if (filter->priv_data_size) {
129		13464	ctx->priv_data = av_mallocz(filter->priv_data_size);
130	✗✓	13464	if (!ctx->priv_data) {
131			ret = AVERROR(ENOMEM);
132			goto fail;
133			}
134	✓✓	13464	if (filter->priv_class) {
135		12970	(const AVClass *)ctx->priv_data = filter->priv_class;
136		12970	av_opt_set_defaults(ctx->priv_data);
137			}
138			}
139
140		13466	*pctx = ctx;
141		13466	return 0;
142			fail:
143			av_bsf_free(&ctx);
144			return ret;
145			}
146
147		13466	int av_bsf_init(AVBSFContext *ctx)
148			{
149			int ret, i;
150
151			/* check that the codec is supported */
152	✓✓	13466	if (ctx->filter->codec_ids) {
153	✓✗	4211	for (i = 0; ctx->filter->codec_ids[i] != AV_CODEC_ID_NONE; i++)
154	✓✓	4211	if (ctx->par_in->codec_id == ctx->filter->codec_ids[i])
155		1260	break;
156	✗✓	1260	if (ctx->filter->codec_ids[i] == AV_CODEC_ID_NONE) {
157			const AVCodecDescriptor *desc = avcodec_descriptor_get(ctx->par_in->codec_id);
158			av_log(ctx, AV_LOG_ERROR, "Codec '%s' (%d) is not supported by the "
159			"bitstream filter '%s'. Supported codecs are: ",
160			desc ? desc->name : "unknown", ctx->par_in->codec_id, ctx->filter->name);
161			for (i = 0; ctx->filter->codec_ids[i] != AV_CODEC_ID_NONE; i++) {
162			desc = avcodec_descriptor_get(ctx->filter->codec_ids[i]);
163			av_log(ctx, AV_LOG_ERROR, "%s (%d) ",
164			desc ? desc->name : "unknown", ctx->filter->codec_ids[i]);
165			}
166			av_log(ctx, AV_LOG_ERROR, "\n");
167			return AVERROR(EINVAL);
168			}
169			}
170
171			/* initialize output parameters to be the same as input
172			* init below might overwrite that */
173		13466	ret = avcodec_parameters_copy(ctx->par_out, ctx->par_in);
174	✗✓	13466	if (ret < 0)
175			return ret;
176
177		13466	ctx->time_base_out = ctx->time_base_in;
178
179	✓✓	13466	if (ctx->filter->init) {
180		13457	ret = ctx->filter->init(ctx);
181	✗✓	13457	if (ret < 0)
182			return ret;
183			}
184
185		13466	return 0;
186			}
187
188		28	void av_bsf_flush(AVBSFContext *ctx)
189			{
190		28	AVBSFInternal *bsfi = ctx->internal;
191
192		28	bsfi->eof = 0;
193
194		28	av_packet_unref(bsfi->buffer_pkt);
195
196	✓✗	28	if (ctx->filter->flush)
197		28	ctx->filter->flush(ctx);
198		28	}
199
200		388799	int av_bsf_send_packet(AVBSFContext ctx, AVPacket pkt)
201			{
202		388799	AVBSFInternal *bsfi = ctx->internal;
203			int ret;
204
205	✓✓✓✓ ✓✗	388799	if (!pkt \|\| IS_EMPTY(pkt)) {
206		5913	bsfi->eof = 1;
207		5913	return 0;
208			}
209
210	✗✓	382886	if (bsfi->eof) {
211			av_log(ctx, AV_LOG_ERROR, "A non-NULL packet sent after an EOF.\n");
212			return AVERROR(EINVAL);
213			}
214
215	✓✗✗✓	382886	if (!IS_EMPTY(bsfi->buffer_pkt))
216			return AVERROR(EAGAIN);
217
218		382886	ret = av_packet_make_refcounted(pkt);
219	✗✓	382886	if (ret < 0)
220			return ret;
221		382886	av_packet_move_ref(bsfi->buffer_pkt, pkt);
222
223		382886	return 0;
224			}
225
226		770795	int av_bsf_receive_packet(AVBSFContext ctx, AVPacket pkt)
227			{
228		770795	return ctx->filter->filter(ctx, pkt);
229			}
230
231		895	int ff_bsf_get_packet(AVBSFContext ctx, AVPacket *pkt)
232			{
233		895	AVBSFInternal *bsfi = ctx->internal;
234			AVPacket *tmp_pkt;
235
236	✓✓	895	if (bsfi->eof)
237		4	return AVERROR_EOF;
238
239	✓✓✓✗	891	if (IS_EMPTY(bsfi->buffer_pkt))
240		445	return AVERROR(EAGAIN);
241
242		446	tmp_pkt = av_packet_alloc();
243	✗✓	446	if (!tmp_pkt)
244			return AVERROR(ENOMEM);
245
246		446	*pkt = bsfi->buffer_pkt;
247		446	bsfi->buffer_pkt = tmp_pkt;
248
249		446	return 0;
250			}
251
252		770122	int ff_bsf_get_packet_ref(AVBSFContext ctx, AVPacket pkt)
253			{
254		770122	AVBSFInternal *bsfi = ctx->internal;
255
256	✓✓	770122	if (bsfi->eof)
257		5914	return AVERROR_EOF;
258
259	✓✓✓✗	764208	if (IS_EMPTY(bsfi->buffer_pkt))
260		381768	return AVERROR(EAGAIN);
261
262		382440	av_packet_move_ref(pkt, bsfi->buffer_pkt);
263
264		382440	return 0;
265			}
266
267			typedef struct BSFListContext {
268			const AVClass *class;
269
270			AVBSFContext **bsfs;
271			int nb_bsfs;
272
273			unsigned idx; // index of currently processed BSF
274
275			char * item_name;
276			} BSFListContext;
277
278
279		12203	static int bsf_list_init(AVBSFContext *bsf)
280			{
281		12203	BSFListContext *lst = bsf->priv_data;
282			int ret, i;
283		12203	const AVCodecParameters *cod_par = bsf->par_in;
284		12203	AVRational tb = bsf->time_base_in;
285
286	✗✓	12203	for (i = 0; i < lst->nb_bsfs; ++i) {
287			ret = avcodec_parameters_copy(lst->bsfs[i]->par_in, cod_par);
288			if (ret < 0)
289			goto fail;
290
291			lst->bsfs[i]->time_base_in = tb;
292
293			ret = av_bsf_init(lst->bsfs[i]);
294			if (ret < 0)
295			goto fail;
296
297			cod_par = lst->bsfs[i]->par_out;
298			tb = lst->bsfs[i]->time_base_out;
299			}
300
301		12203	bsf->time_base_out = tb;
302		12203	ret = avcodec_parameters_copy(bsf->par_out, cod_par);
303
304		12203	fail:
305		12203	return ret;
306			}
307
308		749517	static int bsf_list_filter(AVBSFContext bsf, AVPacket out)
309			{
310		749517	BSFListContext *lst = bsf->priv_data;
311		749517	int ret, eof = 0;
312
313	✓✗	749517	if (!lst->nb_bsfs)
314		749517	return ff_bsf_get_packet_ref(bsf, out);
315
316			while (1) {
317			/* get a packet from the previous filter up the chain */
318			if (lst->idx)
319			ret = av_bsf_receive_packet(lst->bsfs[lst->idx-1], out);
320			else
321			ret = ff_bsf_get_packet_ref(bsf, out);
322			if (ret == AVERROR(EAGAIN)) {
323			if (!lst->idx)
324			return ret;
325			lst->idx--;
326			continue;
327			} else if (ret == AVERROR_EOF) {
328			eof = 1;
329			} else if (ret < 0)
330			return ret;
331
332			/* send it to the next filter down the chain */
333			if (lst->idx < lst->nb_bsfs) {
334			ret = av_bsf_send_packet(lst->bsfs[lst->idx], eof ? NULL : out);
335			av_assert1(ret != AVERROR(EAGAIN));
336			if (ret < 0) {
337			av_packet_unref(out);
338			return ret;
339			}
340			lst->idx++;
341			eof = 0;
342			} else if (eof) {
343			return ret;
344			} else {
345			return 0;
346			}
347			}
348			}
349
350		28	static void bsf_list_flush(AVBSFContext *bsf)
351			{
352		28	BSFListContext *lst = bsf->priv_data;
353
354	✗✓	28	for (int i = 0; i < lst->nb_bsfs; i++)
355			av_bsf_flush(lst->bsfs[i]);
356		28	lst->idx = 0;
357		28	}
358
359		12203	static void bsf_list_close(AVBSFContext *bsf)
360			{
361		12203	BSFListContext *lst = bsf->priv_data;
362			int i;
363
364	✗✓	12203	for (i = 0; i < lst->nb_bsfs; ++i)
365			av_bsf_free(&lst->bsfs[i]);
366		12203	av_freep(&lst->bsfs);
367		12203	av_freep(&lst->item_name);
368		12203	}
369
370			static const char bsf_list_item_name(void ctx)
371			{
372			static const char *null_filter_name = "null";
373			AVBSFContext *bsf_ctx = ctx;
374			BSFListContext *lst = bsf_ctx->priv_data;
375
376			if (!lst->nb_bsfs)
377			return null_filter_name;
378
379			if (!lst->item_name) {
380			int i;
381			AVBPrint bp;
382			av_bprint_init(&bp, 16, 128);
383
384			av_bprintf(&bp, "bsf_list(");
385			for (i = 0; i < lst->nb_bsfs; i++)
386			av_bprintf(&bp, i ? ",%s" : "%s", lst->bsfs[i]->filter->name);
387			av_bprintf(&bp, ")");
388
389			av_bprint_finalize(&bp, &lst->item_name);
390			}
391
392			return lst->item_name;
393			}
394
395			static const AVClass bsf_list_class = {
396			.class_name = "bsf_list",
397			.item_name = bsf_list_item_name,
398			.version = LIBAVUTIL_VERSION_INT,
399			};
400
401			const AVBitStreamFilter ff_list_bsf = {
402			.name = "bsf_list",
403			.priv_data_size = sizeof(BSFListContext),
404			.priv_class = &bsf_list_class,
405			.init = bsf_list_init,
406			.filter = bsf_list_filter,
407			.flush = bsf_list_flush,
408			.close = bsf_list_close,
409			};
410
411			struct AVBSFList {
412			AVBSFContext **bsfs;
413			int nb_bsfs;
414			};
415
416		553	AVBSFList *av_bsf_list_alloc(void)
417			{
418		553	return av_mallocz(sizeof(AVBSFList));
419			}
420
421			void av_bsf_list_free(AVBSFList **lst)
422			{
423			int i;
424
425			if (!*lst)
426			return;
427
428			for (i = 0; i < (*lst)->nb_bsfs; ++i)
429			av_bsf_free(&(*lst)->bsfs[i]);
430			av_free((*lst)->bsfs);
431			av_freep(lst);
432			}
433
434		553	int av_bsf_list_append(AVBSFList lst, AVBSFContext bsf)
435			{
436		553	return av_dynarray_add_nofree(&lst->bsfs, &lst->nb_bsfs, bsf);
437			}
438
439		553	static int bsf_list_append_internal(AVBSFList lst, const char bsf_name, const char options, AVDictionary * options_dict)
440			{
441			int ret;
442			const AVBitStreamFilter *filter;
443			AVBSFContext *bsf;
444
445		553	filter = av_bsf_get_by_name(bsf_name);
446	✗✓	553	if (!filter)
447			return AVERROR_BSF_NOT_FOUND;
448
449		553	ret = av_bsf_alloc(filter, &bsf);
450	✗✓	553	if (ret < 0)
451			return ret;
452
453	✓✓✓✗	553	if (options && filter->priv_class) {
454		10	const AVOption *opt = av_opt_next(bsf->priv_data, NULL);
455		10	const char * shorthand[2] = {NULL};
456
457	✓✗	10	if (opt)
458		10	shorthand[0] = opt->name;
459
460		10	ret = av_opt_set_from_string(bsf->priv_data, options, shorthand, "=", ":");
461	✗✓	10	if (ret < 0)
462			goto end;
463			}
464
465	✗✓	553	if (options_dict) {
466			ret = av_opt_set_dict2(bsf, options_dict, AV_OPT_SEARCH_CHILDREN);
467			if (ret < 0)
468			goto end;
469			}
470
471		553	ret = av_bsf_list_append(lst, bsf);
472
473		553	end:
474	✗✓	553	if (ret < 0)
475			av_bsf_free(&bsf);
476
477		553	return ret;
478			}
479
480			int av_bsf_list_append2(AVBSFList lst, const char bsf_name, AVDictionary ** options)
481			{
482			return bsf_list_append_internal(lst, bsf_name, NULL, options);
483			}
484
485		553	int av_bsf_list_finalize(AVBSFList lst, AVBSFContext bsf)
486			{
487		553	int ret = 0;
488			BSFListContext *ctx;
489
490	✓✗	553	if ((*lst)->nb_bsfs == 1) {
491		553	bsf = (lst)->bsfs[0];
492		553	av_freep(&(*lst)->bsfs);
493		553	(*lst)->nb_bsfs = 0;
494		553	goto end;
495			}
496
497			ret = av_bsf_alloc(&ff_list_bsf, bsf);
498			if (ret < 0)
499			return ret;
500
501			ctx = (*bsf)->priv_data;
502
503			ctx->bsfs = (*lst)->bsfs;
504			ctx->nb_bsfs = (*lst)->nb_bsfs;
505
506		553	end:
507		553	av_freep(lst);
508		553	return ret;
509			}
510
511		553	static int bsf_parse_single(char str, AVBSFList bsf_lst)
512			{
513			char bsf_name, bsf_options_str;
514
515		553	bsf_name = av_strtok(str, "=", &bsf_options_str);
516	✗✓	553	if (!bsf_name)
517			return AVERROR(EINVAL);
518
519		553	return bsf_list_append_internal(bsf_lst, bsf_name, bsf_options_str, NULL);
520			}
521
522		12756	int av_bsf_list_parse_str(const char str, AVBSFContext *bsf_lst)
523			{
524			AVBSFList *lst;
525			char bsf_str, buf, dup, saveptr;
526			int ret;
527
528	✓✓	12756	if (!str)
529		12203	return av_bsf_get_null_filter(bsf_lst);
530
531		553	lst = av_bsf_list_alloc();
532	✗✓	553	if (!lst)
533			return AVERROR(ENOMEM);
534
535	✗✓	553	if (!(dup = buf = av_strdup(str))) {
536			ret = AVERROR(ENOMEM);
537			goto end;
538			}
539
540	✓✓	1106	while (bsf_str = av_strtok(buf, ",", &saveptr)) {
541		553	ret = bsf_parse_single(bsf_str, lst);
542	✗✓	553	if (ret < 0)
543			goto end;
544
545		553	buf = NULL;
546			}
547
548		553	ret = av_bsf_list_finalize(&lst, bsf_lst);
549		553	end:
550	✗✓	553	if (ret < 0)
551			av_bsf_list_free(&lst);
552		553	av_free(dup);
553		553	return ret;
554			}
555
556		12203	int av_bsf_get_null_filter(AVBSFContext **bsf)
557			{
558		12203	return av_bsf_alloc(&ff_list_bsf, bsf);
559			}