| Line | Branch | Exec | Source |
|---|---|---|---|
| 1 | /* | ||
| 2 | * copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at> | ||
| 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 <string.h> | ||
| 22 | |||
| 23 | #include "bsf.h" | ||
| 24 | #include "bsf_internal.h" | ||
| 25 | |||
| 26 | #include "libavutil/log.h" | ||
| 27 | #include "libavutil/opt.h" | ||
| 28 | |||
| 29 | enum DumpFreq { | ||
| 30 | DUMP_FREQ_KEYFRAME, | ||
| 31 | DUMP_FREQ_ALL, | ||
| 32 | }; | ||
| 33 | |||
| 34 | typedef struct DumpExtradataContext { | ||
| 35 | const AVClass *class; | ||
| 36 | AVPacket pkt; | ||
| 37 | int freq; | ||
| 38 | } DumpExtradataContext; | ||
| 39 | |||
| 40 | ✗ | static int dump_extradata(AVBSFContext *ctx, AVPacket *out) | |
| 41 | { | ||
| 42 | ✗ | DumpExtradataContext *s = ctx->priv_data; | |
| 43 | ✗ | AVPacket *in = &s->pkt; | |
| 44 | ✗ | int ret = 0; | |
| 45 | |||
| 46 | ✗ | ret = ff_bsf_get_packet_ref(ctx, in); | |
| 47 | ✗ | if (ret < 0) | |
| 48 | ✗ | return ret; | |
| 49 | |||
| 50 | ✗ | if (ctx->par_in->extradata && | |
| 51 | ✗ | (s->freq == DUMP_FREQ_ALL || | |
| 52 | ✗ | (s->freq == DUMP_FREQ_KEYFRAME && in->flags & AV_PKT_FLAG_KEY)) && | |
| 53 | ✗ | (in->size < ctx->par_in->extradata_size || | |
| 54 | ✗ | memcmp(in->data, ctx->par_in->extradata, ctx->par_in->extradata_size))) { | |
| 55 | ✗ | if (in->size >= INT_MAX - ctx->par_in->extradata_size) { | |
| 56 | ✗ | ret = AVERROR(ERANGE); | |
| 57 | ✗ | goto fail; | |
| 58 | } | ||
| 59 | |||
| 60 | ✗ | ret = av_new_packet(out, in->size + ctx->par_in->extradata_size); | |
| 61 | ✗ | if (ret < 0) | |
| 62 | ✗ | goto fail; | |
| 63 | |||
| 64 | ✗ | ret = av_packet_copy_props(out, in); | |
| 65 | ✗ | if (ret < 0) { | |
| 66 | ✗ | av_packet_unref(out); | |
| 67 | ✗ | goto fail; | |
| 68 | } | ||
| 69 | |||
| 70 | ✗ | memcpy(out->data, ctx->par_in->extradata, ctx->par_in->extradata_size); | |
| 71 | ✗ | memcpy(out->data + ctx->par_in->extradata_size, in->data, in->size); | |
| 72 | } else { | ||
| 73 | ✗ | av_packet_move_ref(out, in); | |
| 74 | } | ||
| 75 | |||
| 76 | ✗ | fail: | |
| 77 | ✗ | av_packet_unref(in); | |
| 78 | |||
| 79 | ✗ | return ret; | |
| 80 | } | ||
| 81 | |||
| 82 | #define OFFSET(x) offsetof(DumpExtradataContext, x) | ||
| 83 | #define FLAGS (AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_BSF_PARAM) | ||
| 84 | static const AVOption options[] = { | ||
| 85 | { "freq", "When to dump extradata", OFFSET(freq), AV_OPT_TYPE_INT, | ||
| 86 | { .i64 = DUMP_FREQ_KEYFRAME }, DUMP_FREQ_KEYFRAME, DUMP_FREQ_ALL, FLAGS, .unit = "freq" }, | ||
| 87 | { "k", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = DUMP_FREQ_KEYFRAME }, .flags = FLAGS, .unit = "freq" }, | ||
| 88 | { "keyframe", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = DUMP_FREQ_KEYFRAME }, .flags = FLAGS, .unit = "freq" }, | ||
| 89 | { "e", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = DUMP_FREQ_ALL }, .flags = FLAGS, .unit = "freq" }, | ||
| 90 | { "all", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = DUMP_FREQ_ALL }, .flags = FLAGS, .unit = "freq" }, | ||
| 91 | { NULL }, | ||
| 92 | }; | ||
| 93 | |||
| 94 | static const AVClass dump_extradata_class = { | ||
| 95 | .class_name = "dump_extradata bsf", | ||
| 96 | .item_name = av_default_item_name, | ||
| 97 | .option = options, | ||
| 98 | .version = LIBAVUTIL_VERSION_INT, | ||
| 99 | }; | ||
| 100 | |||
| 101 | const FFBitStreamFilter ff_dump_extradata_bsf = { | ||
| 102 | .p.name = "dump_extra", | ||
| 103 | .p.priv_class = &dump_extradata_class, | ||
| 104 | .priv_data_size = sizeof(DumpExtradataContext), | ||
| 105 | .filter = dump_extradata, | ||
| 106 | }; | ||
| 107 |