2 * Copyright (c) 2013 Nicolas George
4 * This file is part of FFmpeg.
6 * FFmpeg is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public License
8 * as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
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
14 * GNU Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public License
17 * along with FFmpeg; if not, write to the Free Software Foundation, Inc.,
18 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21 #include "libavutil/adler32.h"
22 #include "libavutil/avassert.h"
23 #include "libavutil/bprint.h"
24 #include "libavutil/imgutils.h"
25 #include "libavutil/pixdesc.h"
29 /* Identical to Adler32 when the type is uint8_t. */
30 #define DEFINE_CKSUM_LINE(name, type, conv) \
31 static void cksum_line_ ## name(unsigned *cksum, void *data, unsigned size) \
34 unsigned a = *cksum & 0xFFFF, b = *cksum >> 16; \
35 for (; size > 0; size--, p++) { \
36 a = (a + (unsigned)(conv)) % 65521; \
37 b = (b + a) % 65521; \
39 *cksum = a | (b << 16); \
42 DEFINE_CKSUM_LINE(u8, uint8_t, *p)
43 DEFINE_CKSUM_LINE(s16, int16_t, *p + 0x8000)
44 DEFINE_CKSUM_LINE(s32, int32_t, *p + 0x80000000)
45 DEFINE_CKSUM_LINE(flt, float, *p * 0x80000000 + 0x80000000)
46 DEFINE_CKSUM_LINE(dbl, double, *p * 0x80000000 + 0x80000000)
48 static void video_frame_cksum(AVBPrint *bp, AVFrame *frame)
50 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(frame->format);
53 int linesize[5] = { 0 };
55 av_bprintf(bp, ", %d x %d", frame->width, frame->height);
57 av_bprintf(bp, ", unknown");
60 if (av_image_fill_linesizes(linesize, frame->format, frame->width) < 0)
62 av_bprintf(bp, ", %s", desc->name);
63 for (i = 0; linesize[i]; i++) {
65 int h = frame->height;
66 if ((i == 1 || i == 2) && desc->nb_components >= 3)
67 h = -((-h) >> desc->log2_chroma_h);
68 data = frame->data[i];
69 for (y = 0; y < h; y++) {
70 cksum = av_adler32_update(cksum, data, linesize[i]);
71 data += frame->linesize[i];
73 av_bprintf(bp, ", 0x%08x", cksum);
77 static void audio_frame_cksum(AVBPrint *bp, AVFrame *frame)
79 int nb_planes, nb_samples, p;
82 nb_planes = av_frame_get_channels(frame);
83 nb_samples = frame->nb_samples;
84 if (!av_sample_fmt_is_planar(frame->format)) {
85 nb_samples *= nb_planes;
88 name = av_get_sample_fmt_name(frame->format);
89 av_bprintf(bp, ", %d samples", frame->nb_samples);
90 av_bprintf(bp, ", %s", name ? name : "unknown");
91 for (p = 0; p < nb_planes; p++) {
93 void *d = frame->extended_data[p];
94 switch (frame->format) {
95 case AV_SAMPLE_FMT_U8:
96 case AV_SAMPLE_FMT_U8P:
97 cksum_line_u8(&cksum, d, nb_samples);
99 case AV_SAMPLE_FMT_S16:
100 case AV_SAMPLE_FMT_S16P:
101 cksum_line_s16(&cksum, d, nb_samples);
103 case AV_SAMPLE_FMT_S32:
104 case AV_SAMPLE_FMT_S32P:
105 cksum_line_s32(&cksum, d, nb_samples);
107 case AV_SAMPLE_FMT_FLT:
108 case AV_SAMPLE_FMT_FLTP:
109 cksum_line_flt(&cksum, d, nb_samples);
111 case AV_SAMPLE_FMT_DBL:
112 case AV_SAMPLE_FMT_DBLP:
113 cksum_line_dbl(&cksum, d, nb_samples);
116 av_assert0(!"reached");
118 av_bprintf(bp, ", 0x%08x", cksum);
122 static int write_frame(struct AVFormatContext *s, int stream_index,
123 AVFrame **frame, unsigned flags)
127 enum AVMediaType type;
128 const char *type_name;
130 if ((flags & AV_WRITE_UNCODED_FRAME_QUERY))
133 av_bprint_init(&bp, 0, AV_BPRINT_SIZE_UNLIMITED);
134 av_bprintf(&bp, "%d, %10"PRId64"",
135 stream_index, (*frame)->pts);
136 type = s->streams[stream_index]->codec->codec_type;
137 type_name = av_get_media_type_string(type);
138 av_bprintf(&bp, ", %s", type_name ? type_name : "unknown");
140 case AVMEDIA_TYPE_VIDEO:
141 video_frame_cksum(&bp, *frame);
143 case AVMEDIA_TYPE_AUDIO:
144 audio_frame_cksum(&bp, *frame);
148 av_bprint_chars(&bp, '\n', 1);
149 if (av_bprint_is_complete(&bp))
150 avio_write(s->pb, bp.str, bp.len);
152 ret = AVERROR(ENOMEM);
153 av_bprint_finalize(&bp, NULL);
157 static int write_packet(struct AVFormatContext *s, AVPacket *pkt)
159 return AVERROR(ENOSYS);
162 AVOutputFormat ff_uncodedframecrc_muxer = {
163 .name = "uncodedframecrc",
164 .long_name = NULL_IF_CONFIG_SMALL("uncoded framecrc testing"),
165 .audio_codec = AV_CODEC_ID_PCM_S16LE,
166 .video_codec = AV_CODEC_ID_RAWVIDEO,
167 .write_header = ff_framehash_write_header,
168 .write_packet = write_packet,
169 .write_uncoded_frame = write_frame,
170 .flags = AVFMT_VARIABLE_FPS | AVFMT_TS_NONSTRICT |