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GCC Code Coverage Report

Directory:	../../../ffmpeg/		Exec	Total	Coverage
File:	src/libavcodec/av1_frame_merge_bsf.c	Lines:	45	69	65.2 %
Date:	2020-01-29 01:05:39	Branches:	26	40	65.0 %


/*
 * Copyright (c) 2019 James Almer <jamrial@gmail.com>
 *
 * 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 "bsf.h"
#include "cbs.h"
#include "cbs_av1.h"

typedef struct AV1FMergeContext {
    CodedBitstreamContext *cbc;
    CodedBitstreamFragment frag[2];
    AVPacket *pkt, *in;
    int idx;
} AV1FMergeContext;

static void av1_frame_merge_flush(AVBSFContext *bsf)
{
    AV1FMergeContext *ctx = bsf->priv_data;

    ff_cbs_fragment_reset(ctx->cbc, &ctx->frag[0]);
    ff_cbs_fragment_reset(ctx->cbc, &ctx->frag[1]);
    av_packet_unref(ctx->in);
    av_packet_unref(ctx->pkt);
}

static int av1_frame_merge_filter(AVBSFContext *bsf, AVPacket *out)
{
    AV1FMergeContext *ctx = bsf->priv_data;
    CodedBitstreamFragment *frag = &ctx->frag[ctx->idx], *tu = &ctx->frag[!ctx->idx];
    AVPacket *in = ctx->in, *buffer_pkt = ctx->pkt;
    int err, i;

    err = ff_bsf_get_packet_ref(bsf, in);
    if (err < 0) {
        if (err == AVERROR_EOF && tu->nb_units > 0)
            goto eof;
        return err;
    }

    err = ff_cbs_read_packet(ctx->cbc, frag, in);
    if (err < 0) {
        av_log(bsf, AV_LOG_ERROR, "Failed to read packet.\n");
        goto fail;
    }

    if (frag->nb_units == 0) {
        av_log(bsf, AV_LOG_ERROR, "No OBU in packet.\n");
        err = AVERROR_INVALIDDATA;
        goto fail;
    }

    if (tu->nb_units == 0 && frag->units[0].type != AV1_OBU_TEMPORAL_DELIMITER) {
        av_log(bsf, AV_LOG_ERROR, "Missing Temporal Delimiter.\n");
        err = AVERROR_INVALIDDATA;
        goto fail;
    }

    for (i = 1; i < frag->nb_units; i++) {
        if (frag->units[i].type == AV1_OBU_TEMPORAL_DELIMITER) {
            av_log(bsf, AV_LOG_ERROR, "Temporal Delimiter in the middle of a packet.\n");
            err = AVERROR_INVALIDDATA;
            goto fail;
        }
    }

    if (tu->nb_units > 0 && frag->units[0].type == AV1_OBU_TEMPORAL_DELIMITER) {
eof:
        err = ff_cbs_write_packet(ctx->cbc, buffer_pkt, tu);
        if (err < 0) {
            av_log(bsf, AV_LOG_ERROR, "Failed to write packet.\n");
            goto fail;
        }
        av_packet_move_ref(out, buffer_pkt);

        // Swap fragment index, to avoid copying fragment references.
        ctx->idx = !ctx->idx;
    } else {
        for (i = 0; i < frag->nb_units; i++) {
            err = ff_cbs_insert_unit_content(ctx->cbc, tu, -1, frag->units[i].type,
                                             frag->units[i].content, frag->units[i].content_ref);
            if (err < 0)
                goto fail;
        }

        err = AVERROR(EAGAIN);
    }

    // Buffer packets with timestamps. There should be at most one per TU, be it split or not.
    if (!buffer_pkt->data && in->pts != AV_NOPTS_VALUE)
        av_packet_move_ref(buffer_pkt, in);
    else
        av_packet_unref(in);

    ff_cbs_fragment_reset(ctx->cbc, &ctx->frag[ctx->idx]);

fail:
    if (err < 0 && err != AVERROR(EAGAIN))
        av1_frame_merge_flush(bsf);

    return err;
}

static int av1_frame_merge_init(AVBSFContext *bsf)
{
    AV1FMergeContext *ctx = bsf->priv_data;

    ctx->in  = av_packet_alloc();
    ctx->pkt = av_packet_alloc();
    if (!ctx->in || !ctx->pkt)
        return AVERROR(ENOMEM);

    return ff_cbs_init(&ctx->cbc, AV_CODEC_ID_AV1, bsf);
}

static void av1_frame_merge_close(AVBSFContext *bsf)
{
    AV1FMergeContext *ctx = bsf->priv_data;

    ff_cbs_fragment_free(ctx->cbc, &ctx->frag[0]);
    ff_cbs_fragment_free(ctx->cbc, &ctx->frag[1]);
    av_packet_free(&ctx->in);
    av_packet_free(&ctx->pkt);
    ff_cbs_close(&ctx->cbc);
}

static const enum AVCodecID av1_frame_merge_codec_ids[] = {
    AV_CODEC_ID_AV1, AV_CODEC_ID_NONE,
};

const AVBitStreamFilter ff_av1_frame_merge_bsf = {
    .name           = "av1_frame_merge",
    .priv_data_size = sizeof(AV1FMergeContext),
    .init           = av1_frame_merge_init,
    .flush          = av1_frame_merge_flush,
    .close          = av1_frame_merge_close,
    .filter         = av1_frame_merge_filter,
    .codec_ids      = av1_frame_merge_codec_ids,
};


Generated by: GCOVR (Version 4.1)

Line	Branch	Exec	Source
1			/*
2			* Copyright (c) 2019 James Almer <jamrial@gmail.com>
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 "bsf.h"
23			#include "cbs.h"
24			#include "cbs_av1.h"
25
26			typedef struct AV1FMergeContext {
27			CodedBitstreamContext *cbc;
28			CodedBitstreamFragment frag[2];
29			AVPacket pkt, in;
30			int idx;
31			} AV1FMergeContext;
32
33			static void av1_frame_merge_flush(AVBSFContext *bsf)
34			{
35			AV1FMergeContext *ctx = bsf->priv_data;
36
37			ff_cbs_fragment_reset(ctx->cbc, &ctx->frag[0]);
38			ff_cbs_fragment_reset(ctx->cbc, &ctx->frag[1]);
39			av_packet_unref(ctx->in);
40			av_packet_unref(ctx->pkt);
41			}
42
43		24	static int av1_frame_merge_filter(AVBSFContext bsf, AVPacket out)
44			{
45		24	AV1FMergeContext *ctx = bsf->priv_data;
46		24	CodedBitstreamFragment frag = &ctx->frag[ctx->idx], tu = &ctx->frag[!ctx->idx];
47		24	AVPacket in = ctx->in, buffer_pkt = ctx->pkt;
48			int err, i;
49
50		24	err = ff_bsf_get_packet_ref(bsf, in);
51	✓✓	24	if (err < 0) {
52	✓✗✓✓	2	if (err == AVERROR_EOF && tu->nb_units > 0)
53		1	goto eof;
54		1	return err;
55			}
56
57		22	err = ff_cbs_read_packet(ctx->cbc, frag, in);
58	✗✓	22	if (err < 0) {
59			av_log(bsf, AV_LOG_ERROR, "Failed to read packet.\n");
60			goto fail;
61			}
62
63	✗✓	22	if (frag->nb_units == 0) {
64			av_log(bsf, AV_LOG_ERROR, "No OBU in packet.\n");
65			err = AVERROR_INVALIDDATA;
66			goto fail;
67			}
68
69	✓✓✗✓	22	if (tu->nb_units == 0 && frag->units[0].type != AV1_OBU_TEMPORAL_DELIMITER) {
70			av_log(bsf, AV_LOG_ERROR, "Missing Temporal Delimiter.\n");
71			err = AVERROR_INVALIDDATA;
72			goto fail;
73			}
74
75	✗✓	22	for (i = 1; i < frag->nb_units; i++) {
76			if (frag->units[i].type == AV1_OBU_TEMPORAL_DELIMITER) {
77			av_log(bsf, AV_LOG_ERROR, "Temporal Delimiter in the middle of a packet.\n");
78			err = AVERROR_INVALIDDATA;
79			goto fail;
80			}
81			}
82
83	✓✓✓✓	22	if (tu->nb_units > 0 && frag->units[0].type == AV1_OBU_TEMPORAL_DELIMITER) {
84		9	eof:
85		10	err = ff_cbs_write_packet(ctx->cbc, buffer_pkt, tu);
86	✗✓	10	if (err < 0) {
87			av_log(bsf, AV_LOG_ERROR, "Failed to write packet.\n");
88			goto fail;
89			}
90		10	av_packet_move_ref(out, buffer_pkt);
91
92			// Swap fragment index, to avoid copying fragment references.
93		10	ctx->idx = !ctx->idx;
94			} else {
95	✓✓	26	for (i = 0; i < frag->nb_units; i++) {
96		13	err = ff_cbs_insert_unit_content(ctx->cbc, tu, -1, frag->units[i].type,
97		13	frag->units[i].content, frag->units[i].content_ref);
98	✗✓	13	if (err < 0)
99			goto fail;
100			}
101
102		13	err = AVERROR(EAGAIN);
103			}
104
105			// Buffer packets with timestamps. There should be at most one per TU, be it split or not.
106	✓✗✗✓	23	if (!buffer_pkt->data && in->pts != AV_NOPTS_VALUE)
107			av_packet_move_ref(buffer_pkt, in);
108			else
109		23	av_packet_unref(in);
110
111		23	ff_cbs_fragment_reset(ctx->cbc, &ctx->frag[ctx->idx]);
112
113		23	fail:
114	✓✓✗✓	23	if (err < 0 && err != AVERROR(EAGAIN))
115			av1_frame_merge_flush(bsf);
116
117		23	return err;
118			}
119
120		1	static int av1_frame_merge_init(AVBSFContext *bsf)
121			{
122		1	AV1FMergeContext *ctx = bsf->priv_data;
123
124		1	ctx->in = av_packet_alloc();
125		1	ctx->pkt = av_packet_alloc();
126	✓✗✗✓	1	if (!ctx->in \|\| !ctx->pkt)
127			return AVERROR(ENOMEM);
128
129		1	return ff_cbs_init(&ctx->cbc, AV_CODEC_ID_AV1, bsf);
130			}
131
132		1	static void av1_frame_merge_close(AVBSFContext *bsf)
133			{
134		1	AV1FMergeContext *ctx = bsf->priv_data;
135
136		1	ff_cbs_fragment_free(ctx->cbc, &ctx->frag[0]);
137		1	ff_cbs_fragment_free(ctx->cbc, &ctx->frag[1]);
138		1	av_packet_free(&ctx->in);
139		1	av_packet_free(&ctx->pkt);
140		1	ff_cbs_close(&ctx->cbc);
141		1	}
142
143			static const enum AVCodecID av1_frame_merge_codec_ids[] = {
144			AV_CODEC_ID_AV1, AV_CODEC_ID_NONE,
145			};
146
147			const AVBitStreamFilter ff_av1_frame_merge_bsf = {
148			.name = "av1_frame_merge",
149			.priv_data_size = sizeof(AV1FMergeContext),
150			.init = av1_frame_merge_init,
151			.flush = av1_frame_merge_flush,
152			.close = av1_frame_merge_close,
153			.filter = av1_frame_merge_filter,
154			.codec_ids = av1_frame_merge_codec_ids,
155			};