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 
91  AVFilterFormats *fmts_list = ff_make_format_list(pix_fmts);
92  if (!fmts_list)
93  return AVERROR(ENOMEM);
94  return ff_set_common_formats(ctx, fmts_list);
95 }
96 
98 {
99  int flags = PP_CPU_CAPS_AUTO;
100  PPFilterContext *pp = inlink->dst->priv;
101 
102  switch (inlink->format) {
103  case AV_PIX_FMT_GRAY8:
104  case AV_PIX_FMT_YUVJ420P:
105  case AV_PIX_FMT_YUV420P: flags |= PP_FORMAT_420; break;
106  case AV_PIX_FMT_YUVJ422P:
107  case AV_PIX_FMT_YUV422P: flags |= PP_FORMAT_422; break;
108  case AV_PIX_FMT_YUV411P: flags |= PP_FORMAT_411; break;
109  case AV_PIX_FMT_GBRP:
110  case AV_PIX_FMT_YUVJ444P:
111  case AV_PIX_FMT_YUV444P: flags |= PP_FORMAT_444; break;
112  case AV_PIX_FMT_YUVJ440P:
113  case AV_PIX_FMT_YUV440P: flags |= PP_FORMAT_440; break;
114  default: av_assert0(0);
115  }
116 
117  pp->pp_ctx = pp_get_context(inlink->w, inlink->h, flags);
118  if (!pp->pp_ctx)
119  return AVERROR(ENOMEM);
120  return 0;
121 }
122 
124 {
125  AVFilterContext *ctx = inlink->dst;
126  PPFilterContext *pp = ctx->priv;
127  AVFilterLink *outlink = ctx->outputs[0];
128  const int aligned_w = FFALIGN(outlink->w, 8);
129  const int aligned_h = FFALIGN(outlink->h, 8);
130  AVFrame *outbuf;
131  int qstride = 0;
132  int8_t *qp_table = NULL;
133  int ret;
134 
135  outbuf = ff_get_video_buffer(outlink, aligned_w, aligned_h);
136  if (!outbuf) {
137  av_frame_free(&inbuf);
138  return AVERROR(ENOMEM);
139  }
140  av_frame_copy_props(outbuf, inbuf);
141  outbuf->width = inbuf->width;
142  outbuf->height = inbuf->height;
143 
144  ret = ff_qp_table_extract(inbuf, &qp_table, &qstride, NULL, NULL);
145  if (ret < 0) {
146  av_frame_free(&inbuf);
147  av_frame_free(&outbuf);
148  return ret;
149  }
150 
151  pp_postprocess((const uint8_t **)inbuf->data, inbuf->linesize,
152  outbuf->data, outbuf->linesize,
153  aligned_w, outlink->h,
154  qp_table,
155  qstride,
156  pp->modes[pp->mode_id],
157  pp->pp_ctx,
158  outbuf->pict_type | (qp_table ? PP_PICT_TYPE_QP2 : 0));
159 
160  av_frame_free(&inbuf);
161  av_freep(&qp_table);
162  return ff_filter_frame(outlink, outbuf);
163 }
164 
166 {
167  int i;
168  PPFilterContext *pp = ctx->priv;
169 
170  for (i = 0; i <= PP_QUALITY_MAX; i++)
171  pp_free_mode(pp->modes[i]);
172  if (pp->pp_ctx)
173  pp_free_context(pp->pp_ctx);
174 }
175 
176 static const AVFilterPad pp_inputs[] = {
177  {
178  .name = "default",
179  .type = AVMEDIA_TYPE_VIDEO,
180  .config_props = pp_config_props,
181  .filter_frame = pp_filter_frame,
182  },
183  { NULL }
184 };
185 
186 static const AVFilterPad pp_outputs[] = {
187  {
188  .name = "default",
189  .type = AVMEDIA_TYPE_VIDEO,
190  },
191  { NULL }
192 };
193 
195  .name = "pp",
196  .description = NULL_IF_CONFIG_SMALL("Filter video using libpostproc."),
197  .priv_size = sizeof(PPFilterContext),
198  .init = pp_init,
199  .uninit = pp_uninit,
201  .inputs = pp_inputs,
202  .outputs = pp_outputs,
204  .priv_class = &pp_class,
206 };
static av_cold void pp_uninit(AVFilterContext *ctx)
Definition: vf_pp.c:165
#define NULL
Definition: coverity.c:32
This structure describes decoded (raw) audio or video data.
Definition: frame.h:318
AVOption.
Definition: opt.h:248
planar YUV 4:4:4, 24bpp, (1 Cr & Cb sample per 1x1 Y samples)
Definition: pixfmt.h:71
static av_cold int init(AVCodecContext *avctx)
Definition: avrndec.c:31
av_cold void pp_free_context(void *vc)
Definition: postprocess.c:912
planar GBR 4:4:4 24bpp
Definition: pixfmt.h:168
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:641
AVFrame * ff_get_video_buffer(AVFilterLink *link, int w, int h)
Request a picture buffer with a specific set of permissions.
Definition: video.c:99
av_cold pp_context * pp_get_context(int width, int height, int cpuCaps)
Definition: postprocess.c:879
#define PP_FORMAT_422
Definition: postprocess.h:96
AVFilterFormats * ff_make_format_list(const int *fmts)
Create a list of supported formats.
Definition: formats.c:287
#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:126
const char * name
Pad name.
Definition: internal.h:60
static const AVFilterPad pp_outputs[]
Definition: vf_pp.c:186
#define av_assert0(cond)
assert() equivalent, that is always enabled.
Definition: avassert.h:37
static const AVOption pp_options[]
Definition: vf_pp.c:45
int ff_filter_frame(AVFilterLink *link, AVFrame *frame)
Send a frame of data to the next filter.
Definition: avfilter.c:1094
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:935
uint8_t
#define av_cold
Definition: attributes.h:88
static av_cold int uninit(AVCodecContext *avctx)
Definition: crystalhd.c:279
AVOptions.
static av_cold int pp_init(AVFilterContext *ctx)
Definition: vf_pp.c:52
#define av_clip
Definition: common.h:122
planar YUV 4:4:0 full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV440P and setting color_range...
Definition: pixfmt.h:100
planar YUV 4:2:2, 16bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV422P and setting col...
Definition: pixfmt.h:79
#define FFALIGN(x, a)
Definition: macros.h:48
A filter pad used for either input or output.
Definition: internal.h:54
#define PP_QUALITY_MAX
Definition: postprocess.h:54
int width
Definition: frame.h:376
int ff_set_common_formats(AVFilterContext *ctx, AVFilterFormats *formats)
A helper for query_formats() which sets all links to the same list of formats.
Definition: formats.c:588
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, stored in raster order - from AVVideoEncParams side data.
Definition: qp_table.c:30
void pp_mode
Definition: postprocess.h:59
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
Definition: frame.c:204
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:117
void * priv
private data for use by the filter
Definition: avfilter.h:356
simple assert() macros that are a bit more flexible than ISO C assert().
#define PP_FORMAT_411
Definition: postprocess.h:97
int mode_id
Definition: vf_pp.c:38
planar YUV 4:2:2, 16bpp, (1 Cr & Cb sample per 2x1 Y samples)
Definition: pixfmt.h:70
these buffered frames must be flushed immediately if a new input produces new the filter must not call request_frame to get more It must just process the frame or queue it The task of requesting more frames is left to the filter s request_frame method or the application If a filter has several inputs
enum AVPictureType pict_type
Picture type of the frame.
Definition: frame.h:401
#define PP_PICT_TYPE_QP2
MPEG2 style QScale.
Definition: postprocess.h:101
planar YUV 4:2:0, 12bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV420P and setting col...
Definition: pixfmt.h:78
static int process_command(AVFilterContext *ctx, const char *cmd, const char *args, char *res, int res_len, int flags)
Definition: af_acrusher.c:336
void pp_free_mode(pp_mode *mode)
Definition: postprocess.c:837
AVFormatContext * ctx
Definition: movenc.c:48
char * subfilters
Definition: vf_pp.c:37
static const AVFilterPad pp_inputs[]
Definition: vf_pp.c:176
static const AVFilterPad outputs[]
Definition: af_acontrast.c:203
AVFilter ff_vf_pp
Definition: vf_pp.c:194
external API header
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
Definition: frame.h:349
#define PP_FORMAT_440
Definition: postprocess.h:99
Describe the class of an AVClass context structure.
Definition: log.h:67
Filter definition.
Definition: avfilter.h:145
static int pp_filter_frame(AVFilterLink *inlink, AVFrame *inbuf)
Definition: vf_pp.c:123
const char * name
Filter name.
Definition: avfilter.h:149
#define PP_FORMAT_444
Definition: postprocess.h:98
AVFilterLink ** outputs
array of pointers to output links
Definition: avfilter.h:353
static enum AVPixelFormat pix_fmts[]
Definition: libkvazaar.c:303
#define flags(name, subs,...)
Definition: cbs_av1.c:561
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:332
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
#define PP_CPU_CAPS_AUTO
Definition: postprocess.h:92
void * pp_ctx
Definition: vf_pp.c:40
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
Definition: pixfmt.h:66
Y , 8bpp.
Definition: pixfmt.h:74
static int query_formats(AVFilterContext *ctx)
Definition: aeval.c:244
#define FLAGS
Definition: vf_pp.c:44
#define PP_FORMAT_420
Definition: postprocess.h:95
planar YUV 4:4:4, 24bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV444P and setting col...
Definition: pixfmt.h:80
planar YUV 4:1:1, 12bpp, (1 Cr & Cb sample per 4x1 Y samples)
Definition: pixfmt.h:73
static int pp_query_formats(AVFilterContext *ctx)
Definition: vf_pp.c:78
A list of supported formats for one end of a filter link.
Definition: formats.h:65
An instance of a filter.
Definition: avfilter.h:341
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
int height
Definition: frame.h:376
#define av_freep(p)
planar YUV 4:4:0 (1 Cr & Cb sample per 1x2 Y samples)
Definition: pixfmt.h:99
internal API functions
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
pp_mode * modes[PP_QUALITY_MAX+1]
Definition: vf_pp.c:39
#define AVERROR_EXTERNAL
Generic error in an external library.
Definition: error.h:57
AVPixelFormat
Pixel format.
Definition: pixfmt.h:64
#define OFFSET(x)
Definition: vf_pp.c:43
static int pp_config_props(AVFilterLink *inlink)
Definition: vf_pp.c:97
int av_frame_copy_props(AVFrame *dst, const AVFrame *src)
Copy only "metadata" fields from src to dst.
Definition: frame.c:659
int i
Definition: input.c:407
AVFILTER_DEFINE_CLASS(pp)