FFmpeg: libavcodec/v408enc.c Source File

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libavcodec

v408enc.c

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1 /*

2 * v408 encoder

3 *

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 */

23 #include "libavutil/intreadwrite.h"

24 #include "avcodec.h"

25 #include "internal.h"

27 static av_cold int v408_encode_init(AVCodecContext *avctx)

28 {

29 avctx->coded_frame = avcodec_alloc_frame();

31 if (!avctx->coded_frame) {

32 av_log(avctx, AV_LOG_ERROR, "Could not allocate frame.\n");

33 return AVERROR(ENOMEM);

34 }

36 return 0;

37 }

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

40 const AVFrame *pic, int *got_packet)

41 {

42 uint8_t *dst;

43 uint8_t *y, *u, *v, *a;

44 int i, j, ret;

46 if ((ret = ff_alloc_packet2(avctx, pkt, avctx->width * avctx->height * 4)) < 0)

47 return ret;

48 dst = pkt->data;

50 avctx->coded_frame->key_frame = 1;

51 avctx->coded_frame->pict_type = AV_PICTURE_TYPE_I;

53 y = pic->data[0];

54 u = pic->data[1];

55 v = pic->data[2];

56 a = pic->data[3];

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

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

60 if (avctx->codec_id==AV_CODEC_ID_AYUV) {

61 *dst++ = v[j];

62 *dst++ = u[j];

63 *dst++ = y[j];

64 *dst++ = a[j];

65 } else {

66 *dst++ = u[j];

67 *dst++ = y[j];

68 *dst++ = v[j];

69 *dst++ = a[j];

70 }

71 }

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

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

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

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

76 }

78 pkt->flags |= AV_PKT_FLAG_KEY;

79 *got_packet = 1;

80 return 0;

81 }

83 static av_cold int v408_encode_close(AVCodecContext *avctx)

84 {

85 av_freep(&avctx->coded_frame);

87 return 0;

88 }

90 #if CONFIG_AYUV_ENCODER

91 AVCodec ff_ayuv_encoder = {

92 .name = "ayuv",

93 .type = AVMEDIA_TYPE_VIDEO,

94 .id = AV_CODEC_ID_AYUV,

95 .init = v408_encode_init,

96 .encode2 = v408_encode_frame,

97 .close = v408_encode_close,

98 .pix_fmts = (const enum AVPixelFormat[]){ AV_PIX_FMT_YUVA444P, AV_PIX_FMT_NONE },

99 .long_name = NULL_IF_CONFIG_SMALL("Uncompressed packed MS 4:4:4:4"),

100 };

101 #endif

102 #if CONFIG_V408_ENCODER

103 AVCodec ff_v408_encoder = {

104 .name = "v408",

105 .type = AVMEDIA_TYPE_VIDEO,

106 .id = AV_CODEC_ID_V408,

107 .init = v408_encode_init,

108 .encode2 = v408_encode_frame,

109 .close = v408_encode_close,

110 .pix_fmts = (const enum AVPixelFormat[]){ AV_PIX_FMT_YUVA444P, AV_PIX_FMT_NONE },

111 .long_name = NULL_IF_CONFIG_SMALL("Uncompressed packed QT 4:4:4:4"),

112 };

113 #endif

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