Head

GCC Code Coverage Report

Directory:	../../../ffmpeg/		Exec	Total	Coverage
File:	src/libavcodec/bsf.c	Lines:	88	283	31.1 %
Date:	2019-11-22 03:34:36	Branches:	49	162	30.2 %


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

#include "avcodec.h"
#include "bsf.h"

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);

    av_opt_free(ctx);

    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 AVClass bsf_class = {
    .class_name       = "AVBSFContext",
    .item_name        = av_default_item_name,
    .version          = LIBAVUTIL_VERSION_INT,
    .child_next       = bsf_child_next,
    .child_class_next = ff_bsf_child_class_next,
};

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

int av_bsf_alloc(const AVBitStreamFilter *filter, AVBSFContext **pctx)
{
    AVBSFContext *ctx;
    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;
    }

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

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

    av_opt_set_defaults(ctx);

    /* 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)
{
    ctx->internal->eof = 0;

    av_packet_unref(ctx->internal->buffer_pkt);

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

int av_bsf_send_packet(AVBSFContext *ctx, AVPacket *pkt)
{
    int ret;

    if (!pkt || (!pkt->data && !pkt->side_data_elems)) {
        ctx->internal->eof = 1;
        return 0;
    }

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

    if (ctx->internal->buffer_pkt->data ||
        ctx->internal->buffer_pkt->side_data_elems)
        return AVERROR(EAGAIN);

    ret = av_packet_make_refcounted(pkt);
    if (ret < 0)
        return ret;
    av_packet_move_ref(ctx->internal->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 *in = ctx->internal;
    AVPacket *tmp_pkt;

    if (in->eof)
        return AVERROR_EOF;

    if (!ctx->internal->buffer_pkt->data &&
        !ctx->internal->buffer_pkt->side_data_elems)
        return AVERROR(EAGAIN);

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

    *pkt = ctx->internal->buffer_pkt;
    ctx->internal->buffer_pkt = tmp_pkt;

    return 0;
}

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

    if (in->eof)
        return AVERROR_EOF;

    if (!ctx->internal->buffer_pkt->data &&
        !ctx->internal->buffer_pkt->side_data_elems)
        return AVERROR(EAGAIN);

    av_packet_move_ref(pkt, ctx->internal->buffer_pkt);

    return 0;
}

typedef struct BSFListContext {
    const AVClass *class;

    AVBSFContext **bsfs;
    int nb_bsfs;

    unsigned idx;           // index of currently processed BSF
    unsigned flushed_idx;   // index of BSF being flushed

    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;

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

    while (1) {
        if (lst->idx > lst->flushed_idx) {
            ret = av_bsf_receive_packet(lst->bsfs[lst->idx-1], out);
            if (ret == AVERROR(EAGAIN)) {
                /* no more packets from idx-1, try with previous */
                lst->idx--;
                continue;
            } else if (ret == AVERROR_EOF) {
                /* filter idx-1 is done, continue with idx...nb_bsfs */
                lst->flushed_idx = lst->idx;
                continue;
            }else if (ret < 0) {
                /* filtering error */
                break;
            }
        } else {
            ret = ff_bsf_get_packet_ref(bsf, out);
            if (ret == AVERROR_EOF) {
                lst->idx = lst->flushed_idx;
            } else if (ret < 0)
                break;
        }

        if (lst->idx < lst->nb_bsfs) {
            AVPacket *pkt;
            if (ret == AVERROR_EOF && lst->idx == lst->flushed_idx) {
                /* ff_bsf_get_packet_ref returned EOF and idx is first
                 * filter of yet not flushed filter chain */
                pkt = NULL;
            } else {
                pkt = out;
            }
            ret = av_bsf_send_packet(lst->bsfs[lst->idx], pkt);
            if (ret < 0)
                break;
            lst->idx++;
        } else {
            /* The end of filter chain, break to return result */
            break;
        }
    }

    if (ret < 0)
        av_packet_unref(out);

    return ret;
}

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 = lst->flushed_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);
}

int av_bsf_list_append2(AVBSFList *lst, const char *bsf_name, AVDictionary ** options)
{
    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) {
        ret = av_opt_set_dict2(bsf, options, 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_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(const char *str, AVBSFList *bsf_lst)
{
    char *bsf_name, *bsf_options_str, *buf;
    AVDictionary *bsf_options = NULL;
    int ret = 0;

    if (!(buf = av_strdup(str)))
        return AVERROR(ENOMEM);

    bsf_name = av_strtok(buf, "=", &bsf_options_str);
    if (!bsf_name) {
        ret = AVERROR(EINVAL);
        goto end;
    }

    if (bsf_options_str) {
        ret = av_dict_parse_string(&bsf_options, bsf_options_str, "=", ":", 0);
        if (ret < 0)
            goto end;
    }

    ret = av_bsf_list_append2(bsf_lst, bsf_name, &bsf_options);

    av_dict_free(&bsf_options);
end:
    av_free(buf);
    return ret;
}

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 (1) {
        bsf_str = av_strtok(buf, ",", &saveptr);
        if (!bsf_str)
            break;

        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 4.1)

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/log.h"
22			#include "libavutil/mem.h"
23			#include "libavutil/opt.h"
24			#include "libavutil/avstring.h"
25			#include "libavutil/bprint.h"
26
27			#include "avcodec.h"
28			#include "bsf.h"
29
30			struct AVBSFInternal {
31			AVPacket *buffer_pkt;
32			int eof;
33			};
34
35		31760	void av_bsf_free(AVBSFContext **pctx)
36			{
37			AVBSFContext *ctx;
38
39	✓✗✓✓	31760	if (!pctx \|\| !*pctx)
40		18613	return;
41		13147	ctx = *pctx;
42
43	✓✓	13147	if (ctx->filter->close)
44		1220	ctx->filter->close(ctx);
45	✓✓✓✗	13147	if (ctx->filter->priv_class && ctx->priv_data)
46		744	av_opt_free(ctx->priv_data);
47
48		13147	av_opt_free(ctx);
49
50	✓✗	13147	if (ctx->internal)
51		13147	av_packet_free(&ctx->internal->buffer_pkt);
52		13147	av_freep(&ctx->internal);
53		13147	av_freep(&ctx->priv_data);
54
55		13147	avcodec_parameters_free(&ctx->par_in);
56		13147	avcodec_parameters_free(&ctx->par_out);
57
58		13147	av_freep(pctx);
59			}
60
61			static void bsf_child_next(void obj, void *prev)
62			{
63			AVBSFContext *ctx = obj;
64			if (!prev && ctx->filter->priv_class)
65			return ctx->priv_data;
66			return NULL;
67			}
68
69			static const AVClass bsf_class = {
70			.class_name = "AVBSFContext",
71			.item_name = av_default_item_name,
72			.version = LIBAVUTIL_VERSION_INT,
73			.child_next = bsf_child_next,
74			.child_class_next = ff_bsf_child_class_next,
75			};
76
77			const AVClass *av_bsf_get_class(void)
78			{
79			return &bsf_class;
80			}
81
82		13147	int av_bsf_alloc(const AVBitStreamFilter filter, AVBSFContext *pctx)
83			{
84			AVBSFContext *ctx;
85			int ret;
86
87		13147	ctx = av_mallocz(sizeof(*ctx));
88	✗✓	13147	if (!ctx)
89			return AVERROR(ENOMEM);
90
91		13147	ctx->av_class = &bsf_class;
92		13147	ctx->filter = filter;
93
94		13147	ctx->par_in = avcodec_parameters_alloc();
95		13147	ctx->par_out = avcodec_parameters_alloc();
96	✓✗✗✓	13147	if (!ctx->par_in \|\| !ctx->par_out) {
97			ret = AVERROR(ENOMEM);
98			goto fail;
99			}
100
101		13147	ctx->internal = av_mallocz(sizeof(*ctx->internal));
102	✗✓	13147	if (!ctx->internal) {
103			ret = AVERROR(ENOMEM);
104			goto fail;
105			}
106
107		13147	ctx->internal->buffer_pkt = av_packet_alloc();
108	✗✓	13147	if (!ctx->internal->buffer_pkt) {
109			ret = AVERROR(ENOMEM);
110			goto fail;
111			}
112
113		13147	av_opt_set_defaults(ctx);
114
115			/* allocate priv data and init private options */
116	✓✓	13147	if (filter->priv_data_size) {
117		1235	ctx->priv_data = av_mallocz(filter->priv_data_size);
118	✗✓	1235	if (!ctx->priv_data) {
119			ret = AVERROR(ENOMEM);
120			goto fail;
121			}
122	✓✓	1235	if (filter->priv_class) {
123		744	(const AVClass *)ctx->priv_data = filter->priv_class;
124		744	av_opt_set_defaults(ctx->priv_data);
125			}
126			}
127
128		13147	*pctx = ctx;
129		13147	return 0;
130			fail:
131			av_bsf_free(&ctx);
132			return ret;
133			}
134
135		13147	int av_bsf_init(AVBSFContext *ctx)
136			{
137			int ret, i;
138
139			/* check that the codec is supported */
140	✓✓	13147	if (ctx->filter->codec_ids) {
141	✓✗	4149	for (i = 0; ctx->filter->codec_ids[i] != AV_CODEC_ID_NONE; i++)
142	✓✓	4149	if (ctx->par_in->codec_id == ctx->filter->codec_ids[i])
143		1234	break;
144	✗✓	1234	if (ctx->filter->codec_ids[i] == AV_CODEC_ID_NONE) {
145			const AVCodecDescriptor *desc = avcodec_descriptor_get(ctx->par_in->codec_id);
146			av_log(ctx, AV_LOG_ERROR, "Codec '%s' (%d) is not supported by the "
147			"bitstream filter '%s'. Supported codecs are: ",
148			desc ? desc->name : "unknown", ctx->par_in->codec_id, ctx->filter->name);
149			for (i = 0; ctx->filter->codec_ids[i] != AV_CODEC_ID_NONE; i++) {
150			desc = avcodec_descriptor_get(ctx->filter->codec_ids[i]);
151			av_log(ctx, AV_LOG_ERROR, "%s (%d) ",
152			desc ? desc->name : "unknown", ctx->filter->codec_ids[i]);
153			}
154			av_log(ctx, AV_LOG_ERROR, "\n");
155			return AVERROR(EINVAL);
156			}
157			}
158
159			/* initialize output parameters to be the same as input
160			* init below might overwrite that */
161		13147	ret = avcodec_parameters_copy(ctx->par_out, ctx->par_in);
162	✗✓	13147	if (ret < 0)
163			return ret;
164
165		13147	ctx->time_base_out = ctx->time_base_in;
166
167	✓✓	13147	if (ctx->filter->init) {
168		1229	ret = ctx->filter->init(ctx);
169	✗✓	1229	if (ret < 0)
170			return ret;
171			}
172
173		13147	return 0;
174			}
175
176		28	void av_bsf_flush(AVBSFContext *ctx)
177			{
178		28	ctx->internal->eof = 0;
179
180		28	av_packet_unref(ctx->internal->buffer_pkt);
181
182	✗✓	28	if (ctx->filter->flush)
183			ctx->filter->flush(ctx);
184		28	}
185
186		400059	int av_bsf_send_packet(AVBSFContext ctx, AVPacket pkt)
187			{
188			int ret;
189
190	✓✓✓✓ ✓✗	400059	if (!pkt \|\| (!pkt->data && !pkt->side_data_elems)) {
191		5740	ctx->internal->eof = 1;
192		5740	return 0;
193			}
194
195	✗✓	394319	if (ctx->internal->eof) {
196			av_log(ctx, AV_LOG_ERROR, "A non-NULL packet sent after an EOF.\n");
197			return AVERROR(EINVAL);
198			}
199
200	✓✗	394319	if (ctx->internal->buffer_pkt->data \|\|
201	✗✓	394319	ctx->internal->buffer_pkt->side_data_elems)
202			return AVERROR(EAGAIN);
203
204		394319	ret = av_packet_make_refcounted(pkt);
205	✗✓	394319	if (ret < 0)
206			return ret;
207		394319	av_packet_move_ref(ctx->internal->buffer_pkt, pkt);
208
209		394319	return 0;
210			}
211
212		793489	int av_bsf_receive_packet(AVBSFContext ctx, AVPacket pkt)
213			{
214		793489	return ctx->filter->filter(ctx, pkt);
215			}
216
217		578	int ff_bsf_get_packet(AVBSFContext ctx, AVPacket *pkt)
218			{
219		578	AVBSFInternal *in = ctx->internal;
220			AVPacket *tmp_pkt;
221
222	✗✓	578	if (in->eof)
223			return AVERROR_EOF;
224
225	✓✓	578	if (!ctx->internal->buffer_pkt->data &&
226	✓✗	132	!ctx->internal->buffer_pkt->side_data_elems)
227		132	return AVERROR(EAGAIN);
228
229		446	tmp_pkt = av_packet_alloc();
230	✗✓	446	if (!tmp_pkt)
231			return AVERROR(ENOMEM);
232
233		446	*pkt = ctx->internal->buffer_pkt;
234		446	ctx->internal->buffer_pkt = tmp_pkt;
235
236		446	return 0;
237			}
238
239		792849	int ff_bsf_get_packet_ref(AVBSFContext ctx, AVPacket pkt)
240			{
241		792849	AVBSFInternal *in = ctx->internal;
242
243	✓✓	792849	if (in->eof)
244		5740	return AVERROR_EOF;
245
246	✓✓	787109	if (!ctx->internal->buffer_pkt->data &&
247	✓✗	393236	!ctx->internal->buffer_pkt->side_data_elems)
248		393236	return AVERROR(EAGAIN);
249
250		393873	av_packet_move_ref(pkt, ctx->internal->buffer_pkt);
251
252		393873	return 0;
253			}
254
255			typedef struct BSFListContext {
256			const AVClass *class;
257
258			AVBSFContext **bsfs;
259			int nb_bsfs;
260
261			unsigned idx; // index of currently processed BSF
262			unsigned flushed_idx; // index of BSF being flushed
263
264			char * item_name;
265			} BSFListContext;
266
267
268			static int bsf_list_init(AVBSFContext *bsf)
269			{
270			BSFListContext *lst = bsf->priv_data;
271			int ret, i;
272			const AVCodecParameters *cod_par = bsf->par_in;
273			AVRational tb = bsf->time_base_in;
274
275			for (i = 0; i < lst->nb_bsfs; ++i) {
276			ret = avcodec_parameters_copy(lst->bsfs[i]->par_in, cod_par);
277			if (ret < 0)
278			goto fail;
279
280			lst->bsfs[i]->time_base_in = tb;
281
282			ret = av_bsf_init(lst->bsfs[i]);
283			if (ret < 0)
284			goto fail;
285
286			cod_par = lst->bsfs[i]->par_out;
287			tb = lst->bsfs[i]->time_base_out;
288			}
289
290			bsf->time_base_out = tb;
291			ret = avcodec_parameters_copy(bsf->par_out, cod_par);
292
293			fail:
294			return ret;
295			}
296
297			static int bsf_list_filter(AVBSFContext bsf, AVPacket out)
298			{
299			BSFListContext *lst = bsf->priv_data;
300			int ret;
301
302			if (!lst->nb_bsfs)
303			return ff_bsf_get_packet_ref(bsf, out);
304
305			while (1) {
306			if (lst->idx > lst->flushed_idx) {
307			ret = av_bsf_receive_packet(lst->bsfs[lst->idx-1], out);
308			if (ret == AVERROR(EAGAIN)) {
309			/* no more packets from idx-1, try with previous */
310			lst->idx--;
311			continue;
312			} else if (ret == AVERROR_EOF) {
313			/* filter idx-1 is done, continue with idx...nb_bsfs */
314			lst->flushed_idx = lst->idx;
315			continue;
316			}else if (ret < 0) {
317			/* filtering error */
318			break;
319			}
320			} else {
321			ret = ff_bsf_get_packet_ref(bsf, out);
322			if (ret == AVERROR_EOF) {
323			lst->idx = lst->flushed_idx;
324			} else if (ret < 0)
325			break;
326			}
327
328			if (lst->idx < lst->nb_bsfs) {
329			AVPacket *pkt;
330			if (ret == AVERROR_EOF && lst->idx == lst->flushed_idx) {
331			/* ff_bsf_get_packet_ref returned EOF and idx is first
332			* filter of yet not flushed filter chain */
333			pkt = NULL;
334			} else {
335			pkt = out;
336			}
337			ret = av_bsf_send_packet(lst->bsfs[lst->idx], pkt);
338			if (ret < 0)
339			break;
340			lst->idx++;
341			} else {
342			/* The end of filter chain, break to return result */
343			break;
344			}
345			}
346
347			if (ret < 0)
348			av_packet_unref(out);
349
350			return ret;
351			}
352
353			static void bsf_list_flush(AVBSFContext *bsf)
354			{
355			BSFListContext *lst = bsf->priv_data;
356
357			for (int i = 0; i < lst->nb_bsfs; i++)
358			av_bsf_flush(lst->bsfs[i]);
359			lst->idx = lst->flushed_idx = 0;
360			}
361
362			static void bsf_list_close(AVBSFContext *bsf)
363			{
364			BSFListContext *lst = bsf->priv_data;
365			int i;
366
367			for (i = 0; i < lst->nb_bsfs; ++i)
368			av_bsf_free(&lst->bsfs[i]);
369			av_freep(&lst->bsfs);
370			av_freep(&lst->item_name);
371			}
372
373			static const char bsf_list_item_name(void ctx)
374			{
375			static const char *null_filter_name = "null";
376			AVBSFContext *bsf_ctx = ctx;
377			BSFListContext *lst = bsf_ctx->priv_data;
378
379			if (!lst->nb_bsfs)
380			return null_filter_name;
381
382			if (!lst->item_name) {
383			int i;
384			AVBPrint bp;
385			av_bprint_init(&bp, 16, 128);
386
387			av_bprintf(&bp, "bsf_list(");
388			for (i = 0; i < lst->nb_bsfs; i++)
389			av_bprintf(&bp, i ? ",%s" : "%s", lst->bsfs[i]->filter->name);
390			av_bprintf(&bp, ")");
391
392			av_bprint_finalize(&bp, &lst->item_name);
393			}
394
395			return lst->item_name;
396			}
397
398			static const AVClass bsf_list_class = {
399			.class_name = "bsf_list",
400			.item_name = bsf_list_item_name,
401			.version = LIBAVUTIL_VERSION_INT,
402			};
403
404			const AVBitStreamFilter ff_list_bsf = {
405			.name = "bsf_list",
406			.priv_data_size = sizeof(BSFListContext),
407			.priv_class = &bsf_list_class,
408			.init = bsf_list_init,
409			.filter = bsf_list_filter,
410			.flush = bsf_list_flush,
411			.close = bsf_list_close,
412			};
413
414			struct AVBSFList {
415			AVBSFContext **bsfs;
416			int nb_bsfs;
417			};
418
419			AVBSFList *av_bsf_list_alloc(void)
420			{
421			return av_mallocz(sizeof(AVBSFList));
422			}
423
424			void av_bsf_list_free(AVBSFList **lst)
425			{
426			int i;
427
428			if (!*lst)
429			return;
430
431			for (i = 0; i < (*lst)->nb_bsfs; ++i)
432			av_bsf_free(&(*lst)->bsfs[i]);
433			av_free((*lst)->bsfs);
434			av_freep(lst);
435			}
436
437			int av_bsf_list_append(AVBSFList lst, AVBSFContext bsf)
438			{
439			return av_dynarray_add_nofree(&lst->bsfs, &lst->nb_bsfs, bsf);
440			}
441
442			int av_bsf_list_append2(AVBSFList lst, const char bsf_name, AVDictionary ** options)
443			{
444			int ret;
445			const AVBitStreamFilter *filter;
446			AVBSFContext *bsf;
447
448			filter = av_bsf_get_by_name(bsf_name);
449			if (!filter)
450			return AVERROR_BSF_NOT_FOUND;
451
452			ret = av_bsf_alloc(filter, &bsf);
453			if (ret < 0)
454			return ret;
455
456			if (options) {
457			ret = av_opt_set_dict2(bsf, options, AV_OPT_SEARCH_CHILDREN);
458			if (ret < 0)
459			goto end;
460			}
461
462			ret = av_bsf_list_append(lst, bsf);
463
464			end:
465			if (ret < 0)
466			av_bsf_free(&bsf);
467
468			return ret;
469			}
470
471			int av_bsf_list_finalize(AVBSFList lst, AVBSFContext bsf)
472			{
473			int ret = 0;
474			BSFListContext *ctx;
475
476			if ((*lst)->nb_bsfs == 1) {
477			bsf = (lst)->bsfs[0];
478			av_freep(&(*lst)->bsfs);
479			(*lst)->nb_bsfs = 0;
480			goto end;
481			}
482
483			ret = av_bsf_alloc(&ff_list_bsf, bsf);
484			if (ret < 0)
485			return ret;
486
487			ctx = (*bsf)->priv_data;
488
489			ctx->bsfs = (*lst)->bsfs;
490			ctx->nb_bsfs = (*lst)->nb_bsfs;
491
492			end:
493			av_freep(lst);
494			return ret;
495			}
496
497			static int bsf_parse_single(const char str, AVBSFList bsf_lst)
498			{
499			char bsf_name, bsf_options_str, *buf;
500			AVDictionary *bsf_options = NULL;
501			int ret = 0;
502
503			if (!(buf = av_strdup(str)))
504			return AVERROR(ENOMEM);
505
506			bsf_name = av_strtok(buf, "=", &bsf_options_str);
507			if (!bsf_name) {
508			ret = AVERROR(EINVAL);
509			goto end;
510			}
511
512			if (bsf_options_str) {
513			ret = av_dict_parse_string(&bsf_options, bsf_options_str, "=", ":", 0);
514			if (ret < 0)
515			goto end;
516			}
517
518			ret = av_bsf_list_append2(bsf_lst, bsf_name, &bsf_options);
519
520			av_dict_free(&bsf_options);
521			end:
522			av_free(buf);
523			return ret;
524			}
525
526			int av_bsf_list_parse_str(const char str, AVBSFContext *bsf_lst)
527			{
528			AVBSFList *lst;
529			char bsf_str, buf, dup, saveptr;
530			int ret;
531
532			if (!str)
533			return av_bsf_get_null_filter(bsf_lst);
534
535			lst = av_bsf_list_alloc();
536			if (!lst)
537			return AVERROR(ENOMEM);
538
539			if (!(dup = buf = av_strdup(str))) {
540			ret = AVERROR(ENOMEM);
541			goto end;
542			}
543
544			while (1) {
545			bsf_str = av_strtok(buf, ",", &saveptr);
546			if (!bsf_str)
547			break;
548
549			ret = bsf_parse_single(bsf_str, lst);
550			if (ret < 0)
551			goto end;
552
553			buf = NULL;
554			}
555
556			ret = av_bsf_list_finalize(&lst, bsf_lst);
557			end:
558			if (ret < 0)
559			av_bsf_list_free(&lst);
560			av_free(dup);
561			return ret;
562			}
563
564			int av_bsf_get_null_filter(AVBSFContext **bsf)
565			{
566			return av_bsf_alloc(&ff_list_bsf, bsf);
567			}