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libutvideodec.cpp
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1 /*
2  * Copyright (c) 2011 Derek Buitenhuis
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 General Public
8  * License as published by the Free Software Foundation;
9  * version 2 of the License.
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 GNU
14  * General Public License for more details.
15  *
16  * You should have received a copy of the GNU General Public
17  * License along with FFmpeg; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19  */
20 
21 /**
22  * @file
23  * Known FOURCCs:
24  * 'ULY0' (YCbCr 4:2:0), 'ULY2' (YCbCr 4:2:2), 'ULRG' (RGB), 'ULRA' (RGBA),
25  * 'ULH0' (YCbCr 4:2:0 BT.709), 'ULH2' (YCbCr 4:2:2 BT.709)
26  */
27 
28 extern "C" {
29 #include "avcodec.h"
30 #include "libavutil/imgutils.h"
31 }
32 
33 #include "libutvideo.h"
34 #include "get_bits.h"
35 
37 {
38  UtVideoContext *utv = (UtVideoContext *)avctx->priv_data;
39  UtVideoExtra info;
40  int format;
41  int begin_ret;
42 
43  if (avctx->extradata_size != 16 && avctx->extradata_size != 8 ) {
44  av_log(avctx, AV_LOG_ERROR, "Extradata size (%d) mismatch.\n", avctx->extradata_size);
45  return -1;
46  }
47 
48  /* Read extradata */
49  info.version = AV_RL32(avctx->extradata);
50  info.original_format = AV_RL32(avctx->extradata + 4);
51  info.frameinfo_size = AV_RL32(avctx->extradata + 8);
52  info.flags = AV_RL32(avctx->extradata + 12);
53 
54  /* Pick format based on FOURCC */
55  switch (avctx->codec_tag) {
56 #ifdef UTV_BT709
57  case MKTAG('U', 'L', 'H', '0'):
58  avctx->pix_fmt = AV_PIX_FMT_YUV420P;
59  avctx->colorspace = AVCOL_SPC_BT709;
60  format = UTVF_YV12;
61  break;
62  case MKTAG('U', 'L', 'H', '2'):
63  avctx->pix_fmt = AV_PIX_FMT_YUYV422;
64  avctx->colorspace = AVCOL_SPC_BT709;
65  format = UTVF_YUY2;
66  break;
67 #endif
68  case MKTAG('U', 'L', 'Y', '0'):
69  avctx->pix_fmt = AV_PIX_FMT_YUV420P;
70  format = UTVF_YV12;
71  break;
72  case MKTAG('U', 'L', 'Y', '2'):
73  avctx->pix_fmt = AV_PIX_FMT_YUYV422;
74  format = UTVF_YUY2;
75  break;
76  case MKTAG('U', 'L', 'R', 'G'):
77  avctx->pix_fmt = AV_PIX_FMT_BGR24;
79  break;
80  case MKTAG('U', 'L', 'R', 'A'):
81  avctx->pix_fmt = AV_PIX_FMT_RGB32;
83  break;
84 #ifdef UTVF_UQY2
85  case MKTAG('U', 'Q', 'Y', '2'):
87  format = UTVF_v210;
88  break;
89 #endif
90  default:
91  av_log(avctx, AV_LOG_ERROR,
92  "Not a Ut Video FOURCC: %X\n", avctx->codec_tag);
93  return -1;
94  }
95 
96  /* Only allocate the buffer once */
97  utv->buf_size = av_image_get_buffer_size(avctx->pix_fmt, avctx->width, avctx->height, 1);
98 #ifdef UTVF_UQY2
99  if (format == UTVF_v210)
100  utv->buf_size += avctx->height * ((avctx->width + 47) / 48) * 128; // the linesize used by the decoder, this does not seem to be exported
101 #endif
102  utv->buffer = (uint8_t *)av_malloc(utv->buf_size * sizeof(uint8_t));
103 
104  if (utv->buffer == NULL) {
105  av_log(avctx, AV_LOG_ERROR, "Unable to allocate output buffer.\n");
106  return -1;
107  }
108 
109  /* Allocate the output frame */
110  avctx->coded_frame = av_frame_alloc();
111 
112  /* Is it interlaced? */
113  avctx->coded_frame->interlaced_frame = info.flags & 0x800 ? 1 : 0;
114 
115  /* Apparently Ut Video doesn't store this info... */
116  avctx->coded_frame->top_field_first = 1;
117 
118  /*
119  * Create a Ut Video instance. Since the function wants
120  * an "interface name" string, pass it the name of the lib.
121  */
122  utv->codec = CCodec::CreateInstance(UNFCC(avctx->codec_tag), "libavcodec");
123 
124  /* Initialize Decoding */
125  begin_ret = utv->codec->DecodeBegin(format, avctx->width, avctx->height,
126  CBGROSSWIDTH_WINDOWS, &info, sizeof(UtVideoExtra));
127 
128  /* Check to see if the decoder initlized properly */
129  if (begin_ret != 0) {
130  av_log(avctx, AV_LOG_ERROR,
131  "Could not initialize decoder: %d\n", begin_ret);
132  return -1;
133  }
134 
135  return 0;
136 }
137 
138 static int utvideo_decode_frame(AVCodecContext *avctx, void *data,
139  int *got_frame, AVPacket *avpkt)
140 {
141  UtVideoContext *utv = (UtVideoContext *)avctx->priv_data;
142  AVFrame *pic = avctx->coded_frame;
143  int w = avctx->width, h = avctx->height;
144 
145  /* Set flags */
146  pic->pict_type = AV_PICTURE_TYPE_I;
147  pic->key_frame = 1;
148 
149  /* Decode the frame */
150  utv->codec->DecodeFrame(utv->buffer, avpkt->data, true);
151 
152  /* Set the output data depending on the colorspace */
153  switch (avctx->pix_fmt) {
154  case AV_PIX_FMT_YUV420P:
155  pic->linesize[0] = w;
156  pic->linesize[1] = pic->linesize[2] = w / 2;
157  pic->data[0] = utv->buffer;
158  pic->data[2] = utv->buffer + (w * h);
159  pic->data[1] = pic->data[2] + (w * h / 4);
160  break;
161  case AV_PIX_FMT_YUYV422:
162  pic->linesize[0] = w * 2;
163  pic->data[0] = utv->buffer;
164  break;
165  case AV_PIX_FMT_YUV422P10: {
166  uint16_t *y, *u, *v;
167  int i,j;
168  int linesize = ((w + 47) / 48) * 128;
169 
170  pic->linesize[0] = w * 2;
171  pic->linesize[1] =
172  pic->linesize[2] = w;
173  pic->data[0] = utv->buffer + linesize * h;
174  pic->data[1] = pic->data[0] + h*pic->linesize[0];
175  pic->data[2] = pic->data[1] + h*pic->linesize[1];
176  y = (uint16_t*)pic->data[0];
177  u = (uint16_t*)pic->data[1];
178  v = (uint16_t*)pic->data[2];
179  for (j = 0; j < h; j++) {
180  const uint8_t *in = utv->buffer + j * linesize;
181 
182  for (i = 0; i + 1 < w; i += 6, in += 4) {
183  unsigned a,b;
184  a = AV_RL32(in);
185  in += 4;
186  b = AV_RL32(in);
187  *u++ = (a ) & 0x3FF;
188  *y++ = (a>>10) & 0x3FF;
189  *v++ = (a>>20) & 0x3FF;
190  *y++ = (b ) & 0x3FF;
191 
192  if (i + 3 >= w)
193  break;
194 
195  in += 4;
196  a = AV_RL32(in);
197  *u++ = (b>>10) & 0x3FF;
198  *y++ = (b>>20) & 0x3FF;
199  *v++ = (a ) & 0x3FF;
200  *y++ = (a>>10) & 0x3FF;
201 
202  if (i + 5 >= w)
203  break;
204 
205  in += 4;
206  b = AV_RL32(in);
207  *u++ = (a>>20) & 0x3FF;
208  *y++ = (b ) & 0x3FF;
209  *v++ = (b>>10) & 0x3FF;
210  *y++ = (b>>20) & 0x3FF;
211  }
212  }
213  break;
214  }
215  case AV_PIX_FMT_BGR24:
216  case AV_PIX_FMT_RGB32:
217  /* Make the linesize negative, since Ut Video uses bottom-up BGR */
218  pic->linesize[0] = -1 * w * (avctx->pix_fmt == AV_PIX_FMT_BGR24 ? 3 : 4);
219  pic->data[0] = utv->buffer + utv->buf_size + pic->linesize[0];
220  break;
221  }
222  pic->width = w;
223  pic->height = h;
224  pic->format = avctx->pix_fmt;
225 
226  if (avctx->refcounted_frames) {
227  int ret = av_frame_ref((AVFrame*)data, pic);
228  if (ret < 0)
229  return ret;
230  } else {
231  av_frame_move_ref((AVFrame*)data, pic);
232  }
233 
234  *got_frame = 1;
235 
236  return avpkt->size;
237 }
238 
240 {
241  UtVideoContext *utv = (UtVideoContext *)avctx->priv_data;
242 
243  /* Free output */
244  av_frame_free(&avctx->coded_frame);
245  av_freep(&utv->buffer);
246 
247  /* Finish decoding and clean up the instance */
248  utv->codec->DecodeEnd();
249  CCodec::DeleteInstance(utv->codec);
250 
251  return 0;
252 }
253 
255  "libutvideo",
256  NULL_IF_CONFIG_SMALL("Ut Video"),
259  0, //capabilities
260  NULL, //supported_framerates
261  NULL, //pix_fmts
262  NULL, //supported_samplerates
263  NULL, //sample_fmts
264  NULL, //channel_layouts
265  0, //max_lowres
266  NULL, //priv_class
267  NULL, //profiles
268  sizeof(UtVideoContext),
269  NULL, //next
270  NULL, //init_thread_copy
271  NULL, //update_thread_context
272  NULL, //defaults
273  NULL, //init_static_data
275  NULL, //encode
276  NULL, //encode2
279 };
also ITU-R BT1361 / IEC 61966-2-4 xvYCC709 / SMPTE RP177 Annex B
Definition: pixfmt.h:436
#define NULL
Definition: coverity.c:32
This structure describes decoded (raw) audio or video data.
Definition: frame.h:184
ptrdiff_t const GLvoid * data
Definition: opengl_enc.c:101
misc image utilities
int size
Definition: avcodec.h:1580
const char * b
Definition: vf_curves.c:109
enum AVPixelFormat pix_fmt
Pixel format, see AV_PIX_FMT_xxx.
Definition: avcodec.h:1876
void av_frame_move_ref(AVFrame *dst, AVFrame *src)
Move everything contained in src to dst and reset src.
Definition: frame.c:508
AVCodec.
Definition: avcodec.h:3541
uint8_t
#define av_cold
Definition: attributes.h:82
#define av_malloc(s)
AVFrame * av_frame_alloc(void)
Allocate an AVFrame and set its fields to default values.
Definition: frame.c:140
uint8_t * buffer
Definition: libutvideo.h:68
int av_frame_ref(AVFrame *dst, const AVFrame *src)
Set up a new reference to the data described by the source frame.
Definition: frame.c:374
uint8_t * extradata
some codecs need / can use extradata like Huffman tables.
Definition: avcodec.h:1763
uint8_t * data
Definition: avcodec.h:1579
bitstream reader API header.
int interlaced_frame
The content of the picture is interlaced.
Definition: frame.h:318
#define av_log(a,...)
int av_image_get_buffer_size(enum AVPixelFormat pix_fmt, int width, int height, int align)
Return the size in bytes of the amount of data required to store an image with the given parameters...
Definition: imgutils.c:361
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:176
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
Definition: frame.c:153
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:176
int width
picture width / height.
Definition: avcodec.h:1835
Known FOURCCs: 'ULY0' (YCbCr 4:2:0), 'ULY2' (YCbCr 4:2:2), 'ULRG' (RGB), 'ULRA' (RGBA), 'ULH0' (YCbCr 4:2:0 BT.709), 'ULH2' (YCbCr 4:2:2 BT.709)
int refcounted_frames
If non-zero, the decoded audio and video frames returned from avcodec_decode_video2() and avcodec_dec...
Definition: avcodec.h:2579
packed RGB 8:8:8, 24bpp, BGRBGR...
Definition: pixfmt.h:65
#define UTVF_NFCC_BGR_BU
Definition: libutvideo.h:42
Libavcodec external API header.
main external API structure.
Definition: avcodec.h:1648
#define AV_PIX_FMT_RGB32
Definition: pixfmt.h:318
unsigned int codec_tag
fourcc (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
Definition: avcodec.h:1680
packed YUV 4:2:2, 16bpp, Y0 Cb Y1 Cr
Definition: pixfmt.h:63
uint8_t pi<< 24) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_U8, uint8_t,(*(constuint8_t *) pi-0x80)*(1.0f/(1<< 7))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_U8, uint8_t,(*(constuint8_t *) pi-0x80)*(1.0/(1<< 7))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S16, int16_t,(*(constint16_t *) pi >>8)+0x80) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S16, int16_t,*(constint16_t *) pi *(1.0f/(1<< 15))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S16, int16_t,*(constint16_t *) pi *(1.0/(1<< 15))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S32, int32_t,(*(constint32_t *) pi >>24)+0x80) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S32, int32_t,*(constint32_t *) pi *(1.0f/(1U<< 31))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S32, int32_t,*(constint32_t *) pi *(1.0/(1U<< 31))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_FLT, float, av_clip_uint8(lrintf(*(constfloat *) pi *(1<< 7))+0x80)) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_FLT, float, av_clip_int16(lrintf(*(constfloat *) pi *(1<< 15)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_FLT, float, av_clipl_int32(llrintf(*(constfloat *) pi *(1U<< 31)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_DBL, double, av_clip_uint8(lrint(*(constdouble *) pi *(1<< 7))+0x80)) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_DBL, double, av_clip_int16(lrint(*(constdouble *) pi *(1<< 15)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_DBL, double, av_clipl_int32(llrint(*(constdouble *) pi *(1U<< 31))))#defineSET_CONV_FUNC_GROUP(ofmt, ifmt) staticvoidset_generic_function(AudioConvert *ac){}voidff_audio_convert_free(AudioConvert **ac){if(!*ac) return;ff_dither_free(&(*ac) ->dc);av_freep(ac);}AudioConvert *ff_audio_convert_alloc(AVAudioResampleContext *avr, enumAVSampleFormatout_fmt, enumAVSampleFormatin_fmt, intchannels, intsample_rate, intapply_map){AudioConvert *ac;intin_planar, out_planar;ac=av_mallocz(sizeof(*ac));if(!ac) returnNULL;ac->avr=avr;ac->out_fmt=out_fmt;ac->in_fmt=in_fmt;ac->channels=channels;ac->apply_map=apply_map;if(avr->dither_method!=AV_RESAMPLE_DITHER_NONE &&av_get_packed_sample_fmt(out_fmt)==AV_SAMPLE_FMT_S16 &&av_get_bytes_per_sample(in_fmt)>2){ac->dc=ff_dither_alloc(avr, out_fmt, in_fmt, channels, sample_rate, apply_map);if(!ac->dc){av_free(ac);returnNULL;}returnac;}in_planar=ff_sample_fmt_is_planar(in_fmt, channels);out_planar=ff_sample_fmt_is_planar(out_fmt, channels);if(in_planar==out_planar){ac->func_type=CONV_FUNC_TYPE_FLAT;ac->planes=in_planar?ac->channels:1;}elseif(in_planar) ac->func_type=CONV_FUNC_TYPE_INTERLEAVE;elseac->func_type=CONV_FUNC_TYPE_DEINTERLEAVE;set_generic_function(ac);if(ARCH_AARCH64) ff_audio_convert_init_aarch64(ac);if(ARCH_ARM) ff_audio_convert_init_arm(ac);if(ARCH_X86) ff_audio_convert_init_x86(ac);returnac;}intff_audio_convert(AudioConvert *ac, AudioData *out, AudioData *in){intuse_generic=1;intlen=in->nb_samples;intp;if(ac->dc){av_log(ac->avr, AV_LOG_TRACE,"%dsamples-audio_convert:%sto%s(dithered)\n", len, av_get_sample_fmt_name(ac->in_fmt), av_get_sample_fmt_name(ac->out_fmt));returnff_convert_dither(ac-> in
int extradata_size
Definition: avcodec.h:1764
static const char * format
Definition: movenc.c:47
static av_cold int utvideo_decode_close(AVCodecContext *avctx)
enum AVColorSpace colorspace
YUV colorspace type.
Definition: avcodec.h:2377
#define u(width,...)
#define AV_PIX_FMT_YUV422P10
Definition: pixfmt.h:342
unsigned int buf_size
Definition: libutvideo.h:67
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
Definition: pixfmt.h:62
if(ret< 0)
Definition: vf_mcdeint.c:282
attribute_deprecated AVFrame * coded_frame
the picture in the bitstream
Definition: avcodec.h:3069
CCodec * codec
Definition: libutvideo.h:66
void * priv_data
Definition: avcodec.h:1690
int top_field_first
If the content is interlaced, is top field displayed first.
Definition: frame.h:323
static av_cold int utvideo_decode_init(AVCodecContext *avctx)
AVCodec ff_libutvideo_decoder
#define av_freep(p)
static int utvideo_decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
#define MKTAG(a, b, c, d)
Definition: common.h:342
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_RL32
Definition: bytestream.h:87
This structure stores compressed data.
Definition: avcodec.h:1556
for(j=16;j >0;--j)
#define UTVF_NFCC_BGRA_BU
Definition: libutvideo.h:46