FFmpeg  4.3
pamenc.c
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1 /*
2  * PAM image format
3  * Copyright (c) 2002, 2003 Fabrice Bellard
4  *
5  * This file is part of FFmpeg.
6  *
7  * FFmpeg is free software; you can redistribute it and/or
8  * modify it under the terms of the GNU Lesser General Public
9  * License as published by the Free Software Foundation; either
10  * version 2.1 of the License, or (at your option) any later version.
11  *
12  * FFmpeg is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15  * Lesser General Public License for more details.
16  *
17  * You should have received a copy of the GNU Lesser General Public
18  * License along with FFmpeg; if not, write to the Free Software
19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20  */
21 
22 #include "avcodec.h"
23 #include "internal.h"
24 
26  const AVFrame *p, int *got_packet)
27 {
28  uint8_t *bytestream_start, *bytestream, *bytestream_end;
29  int i, h, w, n, linesize, depth, maxval, ret;
30  const char *tuple_type;
31  uint8_t *ptr;
32 
33  h = avctx->height;
34  w = avctx->width;
35  switch (avctx->pix_fmt) {
37  n = w;
38  depth = 1;
39  maxval = 1;
40  tuple_type = "BLACKANDWHITE";
41  break;
42  case AV_PIX_FMT_GRAY8:
43  n = w;
44  depth = 1;
45  maxval = 255;
46  tuple_type = "GRAYSCALE";
47  break;
49  n = w * 2;
50  depth = 1;
51  maxval = 0xFFFF;
52  tuple_type = "GRAYSCALE";
53  break;
54  case AV_PIX_FMT_GRAY8A:
55  n = w * 2;
56  depth = 2;
57  maxval = 255;
58  tuple_type = "GRAYSCALE_ALPHA";
59  break;
60  case AV_PIX_FMT_YA16BE:
61  n = w * 4;
62  depth = 2;
63  maxval = 0xFFFF;
64  tuple_type = "GRAYSCALE_ALPHA";
65  break;
66  case AV_PIX_FMT_RGB24:
67  n = w * 3;
68  depth = 3;
69  maxval = 255;
70  tuple_type = "RGB";
71  break;
72  case AV_PIX_FMT_RGBA:
73  n = w * 4;
74  depth = 4;
75  maxval = 255;
76  tuple_type = "RGB_ALPHA";
77  break;
78  case AV_PIX_FMT_RGB48BE:
79  n = w * 6;
80  depth = 3;
81  maxval = 0xFFFF;
82  tuple_type = "RGB";
83  break;
85  n = w * 8;
86  depth = 4;
87  maxval = 0xFFFF;
88  tuple_type = "RGB_ALPHA";
89  break;
90  default:
91  return -1;
92  }
93 
94  if ((ret = ff_alloc_packet2(avctx, pkt, n*h + 200, 0)) < 0)
95  return ret;
96 
97  bytestream_start =
98  bytestream = pkt->data;
99  bytestream_end = pkt->data + pkt->size;
100 
101  snprintf(bytestream, bytestream_end - bytestream,
102  "P7\nWIDTH %d\nHEIGHT %d\nDEPTH %d\nMAXVAL %d\nTUPLTYPE %s\nENDHDR\n",
103  w, h, depth, maxval, tuple_type);
104  bytestream += strlen(bytestream);
105 
106  ptr = p->data[0];
107  linesize = p->linesize[0];
108 
109  if (avctx->pix_fmt == AV_PIX_FMT_MONOBLACK){
110  int j;
111  for (i = 0; i < h; i++) {
112  for (j = 0; j < w; j++)
113  *bytestream++ = ptr[j >> 3] >> (7 - j & 7) & 1;
114  ptr += linesize;
115  }
116  } else {
117  for (i = 0; i < h; i++) {
118  memcpy(bytestream, ptr, n);
119  bytestream += n;
120  ptr += linesize;
121  }
122  }
123 
124  pkt->size = bytestream - bytestream_start;
126  *got_packet = 1;
127  return 0;
128 }
129 
131 {
132 #if FF_API_CODED_FRAME
135  avctx->coded_frame->key_frame = 1;
137 #endif
138 
139  return 0;
140 }
141 
143  .name = "pam",
144  .long_name = NULL_IF_CONFIG_SMALL("PAM (Portable AnyMap) image"),
145  .type = AVMEDIA_TYPE_VIDEO,
146  .id = AV_CODEC_ID_PAM,
147  .init = pam_encode_init,
148  .encode2 = pam_encode_frame,
149  .pix_fmts = (const enum AVPixelFormat[]){
155  },
156 };
AVCodec
AVCodec.
Definition: codec.h:190
FF_ENABLE_DEPRECATION_WARNINGS
#define FF_ENABLE_DEPRECATION_WARNINGS
Definition: internal.h:85
AVPixelFormat
AVPixelFormat
Pixel format.
Definition: pixfmt.h:64
AVFrame
This structure describes decoded (raw) audio or video data.
Definition: frame.h:300
AV_PIX_FMT_RGBA64BE
@ AV_PIX_FMT_RGBA64BE
packed RGBA 16:16:16:16, 64bpp, 16R, 16G, 16B, 16A, the 2-byte value for each R/G/B/A component is st...
Definition: pixfmt.h:205
internal.h
AVPacket::data
uint8_t * data
Definition: packet.h:355
AV_PKT_FLAG_KEY
#define AV_PKT_FLAG_KEY
The packet contains a keyframe.
Definition: packet.h:388
AVFrame::data
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:314
AV_PIX_FMT_GRAY16BE
@ AV_PIX_FMT_GRAY16BE
Y , 16bpp, big-endian.
Definition: pixfmt.h:97
AVFrame::key_frame
int key_frame
1 -> keyframe, 0-> not
Definition: frame.h:378
av_cold
#define av_cold
Definition: attributes.h:90
AV_PIX_FMT_RGBA
@ AV_PIX_FMT_RGBA
packed RGBA 8:8:8:8, 32bpp, RGBARGBA...
Definition: pixfmt.h:93
AV_PIX_FMT_GRAY8A
@ AV_PIX_FMT_GRAY8A
alias for AV_PIX_FMT_YA8
Definition: pixfmt.h:146
AV_PIX_FMT_MONOBLACK
@ AV_PIX_FMT_MONOBLACK
Y , 1bpp, 0 is black, 1 is white, in each byte pixels are ordered from the msb to the lsb.
Definition: pixfmt.h:76
AV_PICTURE_TYPE_I
@ AV_PICTURE_TYPE_I
Intra.
Definition: avutil.h:274
AV_PIX_FMT_GRAY8
@ AV_PIX_FMT_GRAY8
Y , 8bpp.
Definition: pixfmt.h:74
AV_CODEC_ID_PAM
@ AV_CODEC_ID_PAM
Definition: codec_id.h:115
AVFrame::pict_type
enum AVPictureType pict_type
Picture type of the frame.
Definition: frame.h:383
AV_PIX_FMT_RGB24
@ AV_PIX_FMT_RGB24
packed RGB 8:8:8, 24bpp, RGBRGB...
Definition: pixfmt.h:68
AVPacket::size
int size
Definition: packet.h:356
NULL_IF_CONFIG_SMALL
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification.
Definition: internal.h:186
AV_PIX_FMT_YA16BE
@ AV_PIX_FMT_YA16BE
16 bits gray, 16 bits alpha (big-endian)
Definition: pixfmt.h:212
AVPacket::flags
int flags
A combination of AV_PKT_FLAG values.
Definition: packet.h:361
AV_PIX_FMT_RGB48BE
@ AV_PIX_FMT_RGB48BE
packed RGB 16:16:16, 48bpp, 16R, 16G, 16B, the 2-byte value for each R/G/B component is stored as big...
Definition: pixfmt.h:102
i
#define i(width, name, range_min, range_max)
Definition: cbs_h2645.c:269
uint8_t
uint8_t
Definition: audio_convert.c:194
AVCodec::name
const char * name
Name of the codec implementation.
Definition: codec.h:197
AVCodecContext::height
int height
Definition: avcodec.h:699
AVCodecContext::pix_fmt
enum AVPixelFormat pix_fmt
Pixel format, see AV_PIX_FMT_xxx.
Definition: avcodec.h:736
avcodec.h
ret
ret
Definition: filter_design.txt:187
w
FFmpeg Automated Testing Environment ************************************Introduction Using FATE from your FFmpeg source directory Submitting the results to the FFmpeg result aggregation server Uploading new samples to the fate suite FATE makefile targets and variables Makefile targets Makefile variables Examples Introduction **************FATE is an extended regression suite on the client side and a means for results aggregation and presentation on the server side The first part of this document explains how you can use FATE from your FFmpeg source directory to test your ffmpeg binary The second part describes how you can run FATE to submit the results to FFmpeg’s FATE server In any way you can have a look at the publicly viewable FATE results by visiting this as it can be seen if some test on some platform broke with their recent contribution This usually happens on the platforms the developers could not test on The second part of this document describes how you can run FATE to submit your results to FFmpeg’s FATE server If you want to submit your results be sure to check that your combination of OS and compiler is not already listed on the above mentioned website In the third part you can find a comprehensive listing of FATE makefile targets and variables Using FATE from your FFmpeg source directory **********************************************If you want to run FATE on your machine you need to have the samples in place You can get the samples via the build target fate rsync Use this command from the top level source this will cause FATE to fail NOTE To use a custom wrapper to run the pass ‘ target exec’ to ‘configure’ or set the TARGET_EXEC Make variable Submitting the results to the FFmpeg result aggregation server ****************************************************************To submit your results to the server you should run fate through the shell script ‘tests fate sh’ from the FFmpeg sources This script needs to be invoked with a configuration file as its first argument tests fate sh path to fate_config A configuration file template with comments describing the individual configuration variables can be found at ‘doc fate_config sh template’ Create a configuration that suits your based on the configuration template The ‘slot’ configuration variable can be any string that is not yet but it is suggested that you name it adhering to the following pattern ‘ARCH OS COMPILER COMPILER VERSION’ The configuration file itself will be sourced in a shell therefore all shell features may be used This enables you to setup the environment as you need it for your build For your first test runs the ‘fate_recv’ variable should be empty or commented out This will run everything as normal except that it will omit the submission of the results to the server The following files should be present in $workdir as specified in the configuration it may help to try out the ‘ssh’ command with one or more ‘ v’ options You should get detailed output concerning your SSH configuration and the authentication process The only thing left is to automate the execution of the fate sh script and the synchronisation of the samples directory Uploading new samples to the fate suite *****************************************If you need a sample uploaded send a mail to samples request This is for developers who have an account on the fate suite server If you upload new please make sure they are as small as space on each network bandwidth and so on benefit from smaller test cases Also keep in mind older checkouts use existing sample that means in practice generally do not remove or overwrite files as it likely would break older checkouts or releases Also all needed samples for a commit should be ideally before the push If you need an account for frequently uploading samples or you wish to help others by doing that send a mail to ffmpeg devel rsync vauL Duo ug o o w
Definition: fate.txt:150
ff_pam_encoder
AVCodec ff_pam_encoder
Definition: pamenc.c:142
AVCodecContext::coded_frame
attribute_deprecated AVFrame * coded_frame
the picture in the bitstream
Definition: avcodec.h:1776
AVCodecContext
main external API structure.
Definition: avcodec.h:526
pkt
static AVPacket pkt
Definition: demuxing_decoding.c:54
AV_PIX_FMT_NONE
@ AV_PIX_FMT_NONE
Definition: pixfmt.h:65
FF_DISABLE_DEPRECATION_WARNINGS
#define FF_DISABLE_DEPRECATION_WARNINGS
Definition: internal.h:84
AVMEDIA_TYPE_VIDEO
@ AVMEDIA_TYPE_VIDEO
Definition: avutil.h:201
AVPacket
This structure stores compressed data.
Definition: packet.h:332
AVCodecContext::width
int width
picture width / height.
Definition: avcodec.h:699
AVFrame::linesize
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
Definition: frame.h:331
h
h
Definition: vp9dsp_template.c:2038
ff_alloc_packet2
int ff_alloc_packet2(AVCodecContext *avctx, AVPacket *avpkt, int64_t size, int64_t min_size)
Check AVPacket size and/or allocate data.
Definition: encode.c:32
snprintf
#define snprintf
Definition: snprintf.h:34
pam_encode_init
static av_cold int pam_encode_init(AVCodecContext *avctx)
Definition: pamenc.c:130
pam_encode_frame
static int pam_encode_frame(AVCodecContext *avctx, AVPacket *pkt, const AVFrame *p, int *got_packet)
Definition: pamenc.c:25