FFmpeg
vf_pp.c
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1 /*
2  * Copyright (c) 2002 A'rpi
3  * Copyright (C) 2012 Clément Bœsch
4  *
5  * This file is part of FFmpeg.
6  *
7  * FFmpeg is free software; you can redistribute it and/or modify
8  * it under the terms of the GNU General Public License as published by
9  * the Free Software Foundation; either version 2 of the License, or
10  * (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
15  * GNU General Public License for more details.
16  *
17  * You should have received a copy of the GNU General Public License along
18  * with FFmpeg; if not, write to the Free Software Foundation, Inc.,
19  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
20  */
21 
22 /**
23  * @file
24  * libpostproc filter, ported from MPlayer.
25  */
26 
27 #include "libavutil/avassert.h"
28 #include "libavutil/opt.h"
29 
30 #include "internal.h"
31 #include "qp_table.h"
32 
34 
35 typedef struct PPFilterContext {
36  const AVClass *class;
37  char *subfilters;
38  int mode_id;
40  void *pp_ctx;
42 
43 #define OFFSET(x) offsetof(PPFilterContext, x)
44 #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
45 static const AVOption pp_options[] = {
46  { "subfilters", "set postprocess subfilters", OFFSET(subfilters), AV_OPT_TYPE_STRING, {.str="de"}, .flags = FLAGS },
47  { NULL }
48 };
49 
51 
53 {
54  int i;
55  PPFilterContext *pp = ctx->priv;
56 
57  for (i = 0; i <= PP_QUALITY_MAX; i++) {
59  if (!pp->modes[i])
60  return AVERROR_EXTERNAL;
61  }
62  pp->mode_id = PP_QUALITY_MAX;
63  return 0;
64 }
65 
66 static int pp_process_command(AVFilterContext *ctx, const char *cmd, const char *args,
67  char *res, int res_len, int flags)
68 {
69  PPFilterContext *pp = ctx->priv;
70 
71  if (!strcmp(cmd, "quality")) {
72  pp->mode_id = av_clip(strtol(args, NULL, 10), 0, PP_QUALITY_MAX);
73  return 0;
74  }
75  return AVERROR(ENOSYS);
76 }
77 
79 {
80  static const enum AVPixelFormat pix_fmts[] = {
89  };
90 
92 }
93 
95 {
96  int flags = PP_CPU_CAPS_AUTO;
97  PPFilterContext *pp = inlink->dst->priv;
98 
99  switch (inlink->format) {
100  case AV_PIX_FMT_GRAY8:
101  case AV_PIX_FMT_YUVJ420P:
102  case AV_PIX_FMT_YUV420P: flags |= PP_FORMAT_420; break;
103  case AV_PIX_FMT_YUVJ422P:
104  case AV_PIX_FMT_YUV422P: flags |= PP_FORMAT_422; break;
105  case AV_PIX_FMT_YUV411P: flags |= PP_FORMAT_411; break;
106  case AV_PIX_FMT_GBRP:
107  case AV_PIX_FMT_YUVJ444P:
108  case AV_PIX_FMT_YUV444P: flags |= PP_FORMAT_444; break;
109  case AV_PIX_FMT_YUVJ440P:
110  case AV_PIX_FMT_YUV440P: flags |= PP_FORMAT_440; break;
111  default: av_assert0(0);
112  }
113 
114  pp->pp_ctx = pp_get_context(inlink->w, inlink->h, flags);
115  if (!pp->pp_ctx)
116  return AVERROR(ENOMEM);
117  return 0;
118 }
119 
121 {
122  AVFilterContext *ctx = inlink->dst;
123  PPFilterContext *pp = ctx->priv;
124  AVFilterLink *outlink = ctx->outputs[0];
125  const int aligned_w = FFALIGN(outlink->w, 8);
126  const int aligned_h = FFALIGN(outlink->h, 8);
127  AVFrame *outbuf;
128  int qstride = 0;
129  int8_t *qp_table = NULL;
130  int ret;
131 
132  outbuf = ff_get_video_buffer(outlink, aligned_w, aligned_h);
133  if (!outbuf) {
134  av_frame_free(&inbuf);
135  return AVERROR(ENOMEM);
136  }
137  av_frame_copy_props(outbuf, inbuf);
138  outbuf->width = inbuf->width;
139  outbuf->height = inbuf->height;
140 
141  ret = ff_qp_table_extract(inbuf, &qp_table, &qstride, NULL, NULL);
142  if (ret < 0) {
143  av_frame_free(&inbuf);
144  av_frame_free(&outbuf);
145  return ret;
146  }
147 
148  pp_postprocess((const uint8_t **)inbuf->data, inbuf->linesize,
149  outbuf->data, outbuf->linesize,
150  aligned_w, outlink->h,
151  qp_table,
152  qstride,
153  pp->modes[pp->mode_id],
154  pp->pp_ctx,
155  outbuf->pict_type | (qp_table ? PP_PICT_TYPE_QP2 : 0));
156 
157  av_frame_free(&inbuf);
158  av_freep(&qp_table);
159  return ff_filter_frame(outlink, outbuf);
160 }
161 
163 {
164  int i;
165  PPFilterContext *pp = ctx->priv;
166 
167  for (i = 0; i <= PP_QUALITY_MAX; i++)
168  pp_free_mode(pp->modes[i]);
169  if (pp->pp_ctx)
170  pp_free_context(pp->pp_ctx);
171 }
172 
173 static const AVFilterPad pp_inputs[] = {
174  {
175  .name = "default",
176  .type = AVMEDIA_TYPE_VIDEO,
177  .config_props = pp_config_props,
178  .filter_frame = pp_filter_frame,
179  },
180 };
181 
182 static const AVFilterPad pp_outputs[] = {
183  {
184  .name = "default",
185  .type = AVMEDIA_TYPE_VIDEO,
186  },
187 };
188 
190  .name = "pp",
191  .description = NULL_IF_CONFIG_SMALL("Filter video using libpostproc."),
192  .priv_size = sizeof(PPFilterContext),
193  .init = pp_init,
194  .uninit = pp_uninit,
198  .process_command = pp_process_command,
199  .priv_class = &pp_class,
201 };
ff_get_video_buffer
AVFrame * ff_get_video_buffer(AVFilterLink *link, int w, int h)
Request a picture buffer with a specific set of permissions.
Definition: video.c:98
pp_get_mode_by_name_and_quality
pp_mode * pp_get_mode_by_name_and_quality(const char *name, int quality)
Return a pp_mode or NULL if an error occurred.
Definition: postprocess.c:642
pp_config_props
static int pp_config_props(AVFilterLink *inlink)
Definition: vf_pp.c:94
AVPixelFormat
AVPixelFormat
Pixel format.
Definition: pixfmt.h:64
av_clip
#define av_clip
Definition: common.h:96
qp_table.h
init
static av_cold int init(AVCodecContext *avctx)
Definition: avrndec.c:31
PP_FORMAT_420
#define PP_FORMAT_420
Definition: postprocess.h:89
AVERROR
Filter the word “frame” indicates either a video frame or a group of audio as stored in an AVFrame structure Format for each input and each output the list of supported formats For video that means pixel format For audio that means channel sample they are references to shared objects When the negotiation mechanism computes the intersection of the formats supported at each end of a all references to both lists are replaced with a reference to the intersection And when a single format is eventually chosen for a link amongst the remaining all references to the list are updated That means that if a filter requires that its input and output have the same format amongst a supported all it has to do is use a reference to the same list of formats query_formats can leave some formats unset and return AVERROR(EAGAIN) to cause the negotiation mechanism toagain later. That can be used by filters with complex requirements to use the format negotiated on one link to set the formats supported on another. Frame references ownership and permissions
opt.h
pp_outputs
static const AVFilterPad pp_outputs[]
Definition: vf_pp.c:182
ff_filter_frame
int ff_filter_frame(AVFilterLink *link, AVFrame *frame)
Send a frame of data to the next filter.
Definition: avfilter.c:1019
inlink
The exact code depends on how similar the blocks are and how related they are to the and needs to apply these operations to the correct inlink or outlink if there are several Macros are available to factor that when no extra processing is inlink
Definition: filter_design.txt:212
av_frame_free
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
Definition: frame.c:112
AVFrame
This structure describes decoded (raw) audio or video data.
Definition: frame.h:303
AVFrame::width
int width
Definition: frame.h:361
AVOption
AVOption.
Definition: opt.h:247
AV_PIX_FMT_YUV440P
@ AV_PIX_FMT_YUV440P
planar YUV 4:4:0 (1 Cr & Cb sample per 1x2 Y samples)
Definition: pixfmt.h:99
AVFilter::name
const char * name
Filter name.
Definition: avfilter.h:153
PP_PICT_TYPE_QP2
#define PP_PICT_TYPE_QP2
MPEG2 style QScale.
Definition: postprocess.h:95
AVFrame::data
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:317
pp_options
static const AVOption pp_options[]
Definition: vf_pp.c:45
PPFilterContext::mode_id
int mode_id
Definition: vf_pp.c:38
AVFilterPad
A filter pad used for either input or output.
Definition: internal.h:50
pp_free_context
av_cold void pp_free_context(void *vc)
Definition: postprocess.c:913
avassert.h
av_cold
#define av_cold
Definition: attributes.h:90
pp_free_mode
void pp_free_mode(pp_mode *mode)
Definition: postprocess.c:838
postprocess.h
AV_PIX_FMT_YUVJ422P
@ AV_PIX_FMT_YUVJ422P
planar YUV 4:2:2, 16bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV422P and setting col...
Definition: pixfmt.h:79
pp_postprocess
void pp_postprocess(const uint8_t *src[3], const int srcStride[3], uint8_t *dst[3], const int dstStride[3], int width, int height, const int8_t *QP_store, int QPStride, pp_mode *vm, void *vc, int pict_type)
Definition: postprocess.c:936
AVFILTER_DEFINE_CLASS
AVFILTER_DEFINE_CLASS(pp)
ff_set_common_formats_from_list
int ff_set_common_formats_from_list(AVFilterContext *ctx, const int *fmts)
Equivalent to ff_set_common_formats(ctx, ff_make_format_list(fmts))
Definition: formats.c:703
av_assert0
#define av_assert0(cond)
assert() equivalent, that is always enabled.
Definition: avassert.h:37
pix_fmts
static enum AVPixelFormat pix_fmts[]
Definition: libkvazaar.c:290
pp_inputs
static const AVFilterPad pp_inputs[]
Definition: vf_pp.c:173
ctx
AVFormatContext * ctx
Definition: movenc.c:48
AV_PIX_FMT_YUV420P
@ AV_PIX_FMT_YUV420P
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
Definition: pixfmt.h:66
pp_init
static av_cold int pp_init(AVFilterContext *ctx)
Definition: vf_pp.c:52
FILTER_INPUTS
#define FILTER_INPUTS(array)
Definition: internal.h:152
AV_PIX_FMT_YUVJ444P
@ AV_PIX_FMT_YUVJ444P
planar YUV 4:4:4, 24bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV444P and setting col...
Definition: pixfmt.h:80
PP_CPU_CAPS_AUTO
#define PP_CPU_CAPS_AUTO
Definition: postprocess.h:86
pp_get_context
av_cold pp_context * pp_get_context(int width, int height, int cpuCaps)
Definition: postprocess.c:880
pp_query_formats
static int pp_query_formats(AVFilterContext *ctx)
Definition: vf_pp.c:78
AVClass
Describe the class of an AVClass context structure.
Definition: log.h:66
NULL
#define NULL
Definition: coverity.c:32
av_frame_copy_props
int av_frame_copy_props(AVFrame *dst, const AVFrame *src)
Copy only "metadata" fields from src to dst.
Definition: frame.c:537
PPFilterContext::subfilters
char * subfilters
Definition: vf_pp.c:37
AV_PIX_FMT_YUVJ420P
@ AV_PIX_FMT_YUVJ420P
planar YUV 4:2:0, 12bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV420P and setting col...
Definition: pixfmt.h:78
AV_PIX_FMT_GRAY8
@ AV_PIX_FMT_GRAY8
Y , 8bpp.
Definition: pixfmt.h:74
PP_FORMAT_422
#define PP_FORMAT_422
Definition: postprocess.h:90
AVFrame::pict_type
enum AVPictureType pict_type
Picture type of the frame.
Definition: frame.h:386
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:117
pp_mode
void pp_mode
Definition: postprocess.h:59
PP_QUALITY_MAX
#define PP_QUALITY_MAX
Definition: postprocess.h:54
AVERROR_EXTERNAL
#define AVERROR_EXTERNAL
Generic error in an external library.
Definition: error.h:59
FLAGS
#define FLAGS
Definition: vf_pp.c:44
internal.h
AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC
#define AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC
Some filters support a generic "enable" expression option that can be used to enable or disable a fil...
Definition: avfilter.h:130
PP_FORMAT_440
#define PP_FORMAT_440
Definition: postprocess.h:93
i
int i
Definition: input.c:406
OFFSET
#define OFFSET(x)
Definition: vf_pp.c:43
AV_PIX_FMT_YUVJ440P
@ AV_PIX_FMT_YUVJ440P
planar YUV 4:4:0 full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV440P and setting color_range
Definition: pixfmt.h:100
AVFilterPad::name
const char * name
Pad name.
Definition: internal.h:56
AVFilter
Filter definition.
Definition: avfilter.h:149
ret
ret
Definition: filter_design.txt:187
PPFilterContext
Definition: vf_pp.c:35
PP_FORMAT_444
#define PP_FORMAT_444
Definition: postprocess.h:92
PPFilterContext::modes
pp_mode * modes[PP_QUALITY_MAX+1]
Definition: vf_pp.c:39
PP_FORMAT_411
#define PP_FORMAT_411
Definition: postprocess.h:91
pp_process_command
static int pp_process_command(AVFilterContext *ctx, const char *cmd, const char *args, char *res, int res_len, int flags)
Definition: vf_pp.c:66
AVFrame::height
int height
Definition: frame.h:361
AV_PIX_FMT_NONE
@ AV_PIX_FMT_NONE
Definition: pixfmt.h:65
AV_PIX_FMT_YUV444P
@ AV_PIX_FMT_YUV444P
planar YUV 4:4:4, 24bpp, (1 Cr & Cb sample per 1x1 Y samples)
Definition: pixfmt.h:71
AVFilterContext
An instance of a filter.
Definition: avfilter.h:346
AV_PIX_FMT_GBRP
@ AV_PIX_FMT_GBRP
planar GBR 4:4:4 24bpp
Definition: pixfmt.h:158
ff_vf_pp
const AVFilter ff_vf_pp
Definition: vf_pp.c:189
AVMEDIA_TYPE_VIDEO
@ AVMEDIA_TYPE_VIDEO
Definition: avutil.h:201
AV_PIX_FMT_YUV422P
@ AV_PIX_FMT_YUV422P
planar YUV 4:2:2, 16bpp, (1 Cr & Cb sample per 2x1 Y samples)
Definition: pixfmt.h:70
ff_qp_table_extract
int ff_qp_table_extract(AVFrame *frame, int8_t **table, int *table_w, int *table_h, int *qscale_type)
Extract a libpostproc-compatible QP table - an 8-bit QP value per 16x16 macroblock,...
Definition: qp_table.c:30
pp_uninit
static av_cold void pp_uninit(AVFilterContext *ctx)
Definition: vf_pp.c:162
FFALIGN
#define FFALIGN(x, a)
Definition: macros.h:78
FILTER_OUTPUTS
#define FILTER_OUTPUTS(array)
Definition: internal.h:153
av_freep
#define av_freep(p)
Definition: tableprint_vlc.h:35
AV_PIX_FMT_YUV411P
@ AV_PIX_FMT_YUV411P
planar YUV 4:1:1, 12bpp, (1 Cr & Cb sample per 4x1 Y samples)
Definition: pixfmt.h:73
query_formats
static int query_formats(AVFilterContext *ctx)
Definition: aeval.c:244
flags
#define flags(name, subs,...)
Definition: cbs_av1.c:561
pp_filter_frame
static int pp_filter_frame(AVFilterLink *inlink, AVFrame *inbuf)
Definition: vf_pp.c:120
AVFrame::linesize
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
Definition: frame.h:334
uninit
static av_cold int uninit(AVCodecContext *avctx)
Definition: crystalhd.c:279
AV_OPT_TYPE_STRING
@ AV_OPT_TYPE_STRING
Definition: opt.h:228
PPFilterContext::pp_ctx
void * pp_ctx
Definition: vf_pp.c:40