1 /*
2 * Copyright (c) 2013 Nicolas George
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 License
8 * 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
14 * GNU Lesser General Public License for more details.
15 *
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
19 */
20
28
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) \
32 { \
33 type *p = data; \
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; \
38 } \
39 *cksum = a | (b << 16); \
40 }
41
47
49 {
51 int i, y;
53 int linesize[5] = { 0 };
54
55 av_bprintf(bp,
", %d x %d", frame->width, frame->height);
56 if (!desc) {
58 return;
59 }
61 return;
63 for (i = 0; linesize[i]; i++) {
64 unsigned cksum = 0;
65 int h = frame->height;
68 data = frame->data[i];
69 for (y = 0; y <
h; y++) {
71 data += frame->linesize[i];
72 }
74 }
75 }
76
78 {
79 int nb_planes, nb_samples, p;
81
85 nb_samples *= nb_planes;
86 nb_planes = 1;
87 }
90 av_bprintf(bp,
", %s", name ? name :
"unknown");
91 for (p = 0; p < nb_planes; p++) {
92 uint32_t cksum = 0;
97 cksum_line_u8(&cksum, d, nb_samples);
98 break;
101 cksum_line_s16(&cksum, d, nb_samples);
102 break;
105 cksum_line_s32(&cksum, d, nb_samples);
106 break;
109 cksum_line_flt(&cksum, d, nb_samples);
110 break;
113 cksum_line_dbl(&cksum, d, nb_samples);
114 break;
115 default:
117 }
119 }
120 }
121
123 {
125 }
126
129 {
130 AVBPrint bp;
131 int ret = 0;
133 const char *type_name;
134
136 return 0;
137
140 stream_index, (*frame)->pts);
143 av_bprintf(&bp,
", %s", type_name ? type_name :
"unknown");
144 switch (type) {
147 break;
150 break;
151 }
152
156 else
159 return ret;
160 }
161
163 {
165 }
166
168 .
name =
"uncodedframecrc",
177 };
void av_bprintf(AVBPrint *buf, const char *fmt,...)
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
This structure describes decoded (raw) audio or video data.
ptrdiff_t const GLvoid * data
static void audio_frame_cksum(AVBPrint *bp, AVFrame *frame)
int av_bprint_finalize(AVBPrint *buf, char **ret_str)
Finalize a print buffer.
#define av_assert0(cond)
assert() equivalent, that is always enabled.
unsigned long av_adler32_update(unsigned long adler, const uint8_t *buf, unsigned int len)
Calculate the Adler32 checksum of a buffer.
AVStream ** streams
A list of all streams in the file.
static int write_packet(struct AVFormatContext *s, AVPacket *pkt)
void avio_write(AVIOContext *s, const unsigned char *buf, int size)
int av_sample_fmt_is_planar(enum AVSampleFormat sample_fmt)
Check if the sample format is planar.
uint8_t log2_chroma_h
Amount to shift the luma height right to find the chroma height.
#define AV_BPRINT_SIZE_UNLIMITED
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
void av_bprint_init(AVBPrint *buf, unsigned size_init, unsigned size_max)
static int write_header(struct AVFormatContext *s)
enum AVMediaType codec_type
General type of the encoded data.
simple assert() macros that are a bit more flexible than ISO C assert().
const char * av_get_sample_fmt_name(enum AVSampleFormat sample_fmt)
Return the name of sample_fmt, or NULL if sample_fmt is not recognized.
AVOutputFormat ff_uncodedframecrc_muxer
uint8_t nb_components
The number of components each pixel has, (1-4)
int channels
number of audio channels, only used for audio.
#define DEFINE_CKSUM_LINE(name, type, conv)
static int av_bprint_is_complete(const AVBPrint *buf)
Test if the print buffer is complete (not truncated).
int ff_framehash_write_header(AVFormatContext *s)
Set the timebase for each stream from the corresponding codec timebase and print it.
Public header for Adler-32 hash function implementation.
int format
format of the frame, -1 if unknown or unset Values correspond to enum AVPixelFormat for video frames...
AVIOContext * pb
I/O context.
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
int av_image_fill_linesizes(int linesizes[4], enum AVPixelFormat pix_fmt, int width)
Fill plane linesizes for an image with pixel format pix_fmt and width width.
static int write_frame(struct AVFormatContext *s, int stream_index, AVFrame **frame, unsigned flags)
static void video_frame_cksum(AVBPrint *bp, AVFrame *frame)
const char * av_get_media_type_string(enum AVMediaType media_type)
Return a string describing the media_type enum, NULL if media_type is unknown.
AVCodecParameters * codecpar
Codec parameters associated with this stream.
uint8_t ** extended_data
pointers to the data planes/channels.
This structure stores compressed data.
int nb_samples
number of audio samples (per channel) described by this frame
#define AV_CEIL_RSHIFT(a, b)
void av_bprint_chars(AVBPrint *buf, char c, unsigned n)
Append char c n times to a print buffer.