FFmpeg: libavcodec/v408enc.c Source File

FFmpeg

libavcodec

v408enc.c

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1 /*

2 * v408 encoder

3 *

4 * Copyright (c) 2012 Carl Eugen Hoyos

5 *

6 * This file is part of FFmpeg.

7 *

8 * FFmpeg is free software; you can redistribute it and/or

9 * modify it under the terms of the GNU Lesser General Public

10 * License as published by the Free Software Foundation; either

11 * version 2.1 of the License, or (at your option) any later version.

12 *

13 * FFmpeg is distributed in the hope that it will be useful,

14 * but WITHOUT ANY WARRANTY; without even the implied warranty of

15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU

16 * Lesser General Public License for more details.

17 *

18 * You should have received a copy of the GNU Lesser General Public

19 * License along with FFmpeg; if not, write to the Free Software

20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA

21 */

22

23 #include "avcodec.h"

24 #include "codec_internal.h"

25 #include "encode.h"

26 #include "internal.h"

27

28 static av_cold int v408_encode_init(AVCodecContext *avctx)

29 {

30 avctx->bits_per_coded_sample = 32;

31 avctx->bit_rate = ff_guess_coded_bitrate(avctx);

32

33 av_log(avctx, AV_LOG_WARNING, "This encoder is deprecated and will be removed.\n");

34

35 return 0;

36 }

37

38 static int v408_encode_frame(AVCodecContext *avctx, AVPacket *pkt,

39 const AVFrame *pic, int *got_packet)

40 {

41 uint8_t *dst;

42 const uint8_t *y, *u, *v, *a;

43 int i, j, ret;

44

45 ret = ff_get_encode_buffer(avctx, pkt, avctx->width * avctx->height * 4, 0);

46 if (ret < 0)

47 return ret;

48 dst = pkt->data;

49

50 y = pic->data[0];

51 u = pic->data[1];

52 v = pic->data[2];

53 a = pic->data[3];

54

55 for (i = 0; i < avctx->height; i++) {

56 for (j = 0; j < avctx->width; j++) {

57 *dst++ = u[j];

58 *dst++ = y[j];

59 *dst++ = v[j];

60 *dst++ = a[j];

61 }

62 y += pic->linesize[0];

63 u += pic->linesize[1];

64 v += pic->linesize[2];

65 a += pic->linesize[3];

66 }

67

68 *got_packet = 1;

69 return 0;

70 }

71

72 static const enum AVPixelFormat pix_fmt[] = { AV_PIX_FMT_YUVA444P, AV_PIX_FMT_NONE };

73

74 const FFCodec ff_v408_encoder = {

75 .p.name = "v408",

76 CODEC_LONG_NAME("Uncompressed packed QT 4:4:4:4"),

77 .p.type = AVMEDIA_TYPE_VIDEO,

78 .p.id = AV_CODEC_ID_V408,

79 .p.capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_ENCODER_REORDERED_OPAQUE,

80 .init = v408_encode_init,

81 FF_CODEC_ENCODE_CB(v408_encode_frame),

82 CODEC_PIXFMTS_ARRAY(pix_fmt),

83 };

ff_guess_coded_bitrate

int64_t ff_guess_coded_bitrate(AVCodecContext *avctx)

Get an estimated video bitrate based on frame size, frame rate and coded bits per pixel.

Definition: utils.c:1031

#define AV_LOG_WARNING

Something somehow does not look correct.

Definition: log.h:216

AVPixelFormat

Pixel format.

Definition: pixfmt.h:71

v408_encode_init

static av_cold int v408_encode_init(AVCodecContext *avctx)

Definition: v408enc.c:28

static enum AVPixelFormat pix_fmt[]

Definition: v408enc.c:72

This structure describes decoded (raw) audio or video data.

Definition: frame.h:427

u

#define u(width, name, range_min, range_max)

Definition: cbs_apv.c:68

uint8_t * data

Definition: packet.h:558

Definition: codec_internal.h:127

ff_v408_encoder

const FFCodec ff_v408_encoder

Definition: v408enc.c:74

uint8_t * data[AV_NUM_DATA_POINTERS]

pointer to the picture/channel planes.

Definition: frame.h:448

AVCodec p

The public AVCodec.

Definition: codec_internal.h:131

FF_CODEC_ENCODE_CB

#define FF_CODEC_ENCODE_CB(func)

Definition: codec_internal.h:358

AVPacket * pkt

Definition: movenc.c:60

#define av_cold

Definition: attributes.h:106

AV_CODEC_CAP_ENCODER_REORDERED_OPAQUE

#define AV_CODEC_CAP_ENCODER_REORDERED_OPAQUE

This encoder can reorder user opaque values from input AVFrames and return them with corresponding ou...

Definition: codec.h:144

CODEC_LONG_NAME

#define CODEC_LONG_NAME(str)

Definition: codec_internal.h:331

CODEC_PIXFMTS_ARRAY

#define CODEC_PIXFMTS_ARRAY(array)

Definition: codec_internal.h:392

AVCodecContext::bit_rate

int64_t bit_rate

the average bitrate

Definition: avcodec.h:481

AV_CODEC_CAP_DR1

#define AV_CODEC_CAP_DR1

Codec uses get_buffer() or get_encode_buffer() for allocating buffers and supports custom allocators.

Definition: codec.h:52

codec_internal.h

uint8_t ptrdiff_t const uint8_t ptrdiff_t int intptr_t intptr_t int int16_t * dst

Definition: dsp.h:87

AV_CODEC_ID_V408

@ AV_CODEC_ID_V408

Definition: codec_id.h:261

a

The reader does not expect b to be semantically here and if the code is changed by maybe adding a a division or other the signedness will almost certainly be mistaken To avoid this confusion a new type was SUINT is the C unsigned type but it holds a signed int to use the same example SUINT a

Definition: undefined.txt:41

AV_PIX_FMT_YUVA444P

@ AV_PIX_FMT_YUVA444P

planar YUV 4:4:4 32bpp, (1 Cr & Cb sample per 1x1 Y & A samples)

Definition: pixfmt.h:174

AVCodecContext::bits_per_coded_sample

int bits_per_coded_sample

bits per sample/pixel from the demuxer (needed for huffyuv).

Definition: avcodec.h:1546

i

#define i(width, name, range_min, range_max)

Definition: cbs_h2645.c:256

const char * name

Name of the codec implementation.

Definition: codec.h:179

AVCodecContext::height

int height

Definition: avcodec.h:592

ret

Definition: filter_design.txt:187

main external API structure.

Definition: avcodec.h:431

ff_get_encode_buffer

int ff_get_encode_buffer(AVCodecContext *avctx, AVPacket *avpkt, int64_t size, int flags)

Get a buffer for a packet.

Definition: encode.c:104

AV_PIX_FMT_NONE

@ AV_PIX_FMT_NONE

Definition: pixfmt.h:72

v408_encode_frame

static int v408_encode_frame(AVCodecContext *avctx, AVPacket *pkt, const AVFrame *pic, int *got_packet)

Definition: v408enc.c:38

AVMEDIA_TYPE_VIDEO

@ AVMEDIA_TYPE_VIDEO

Definition: avutil.h:200

This structure stores compressed data.

Definition: packet.h:535

AVCodecContext::width

int width

picture width / height.

Definition: avcodec.h:592

AVFrame::linesize

int linesize[AV_NUM_DATA_POINTERS]

For video, a positive or negative value, which is typically indicating the size in bytes of each pict...

Definition: frame.h:472

#define av_log(a,...)

Definition: tableprint_vlc.h:27

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