Details | Last modification | View Log | RSS feed
| Rev | Author | Line No. | Line |
|---|---|---|---|
| 4349 | Serge | 1 | /* |
| 2 | * Copyright (c) 2010, Google, Inc. |
||
| 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 Lesser General Public |
||
| 8 | * License as published by the Free Software Foundation; either |
||
| 9 | * version 2.1 of the License, or (at your option) any later version. |
||
| 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 | * Lesser General Public License for more details. |
||
| 15 | * |
||
| 16 | * You should have received a copy of the GNU Lesser 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 | * VP8 decoder support via libvpx |
||
| 24 | */ |
||
| 25 | |||
| 26 | #define VPX_CODEC_DISABLE_COMPAT 1 |
||
| 27 | #include |
||
| 28 | #include |
||
| 29 | |||
| 30 | #include "libavutil/common.h" |
||
| 31 | #include "libavutil/imgutils.h" |
||
| 32 | #include "avcodec.h" |
||
| 33 | #include "internal.h" |
||
| 34 | |||
| 35 | typedef struct VP8DecoderContext { |
||
| 36 | struct vpx_codec_ctx decoder; |
||
| 37 | } VP8Context; |
||
| 38 | |||
| 39 | static av_cold int vpx_init(AVCodecContext *avctx, |
||
| 40 | const struct vpx_codec_iface *iface) |
||
| 41 | { |
||
| 42 | VP8Context *ctx = avctx->priv_data; |
||
| 43 | struct vpx_codec_dec_cfg deccfg = { |
||
| 44 | /* token partitions+1 would be a decent choice */ |
||
| 45 | .threads = FFMIN(avctx->thread_count, 16) |
||
| 46 | }; |
||
| 47 | |||
| 48 | av_log(avctx, AV_LOG_INFO, "%s\n", vpx_codec_version_str()); |
||
| 49 | av_log(avctx, AV_LOG_VERBOSE, "%s\n", vpx_codec_build_config()); |
||
| 50 | |||
| 51 | if (vpx_codec_dec_init(&ctx->decoder, iface, &deccfg, 0) != VPX_CODEC_OK) { |
||
| 52 | const char *error = vpx_codec_error(&ctx->decoder); |
||
| 53 | av_log(avctx, AV_LOG_ERROR, "Failed to initialize decoder: %s\n", |
||
| 54 | error); |
||
| 55 | return AVERROR(EINVAL); |
||
| 56 | } |
||
| 57 | |||
| 58 | avctx->pix_fmt = AV_PIX_FMT_YUV420P; |
||
| 59 | return 0; |
||
| 60 | } |
||
| 61 | |||
| 62 | static int vp8_decode(AVCodecContext *avctx, |
||
| 63 | void *data, int *got_frame, AVPacket *avpkt) |
||
| 64 | { |
||
| 65 | VP8Context *ctx = avctx->priv_data; |
||
| 66 | AVFrame *picture = data; |
||
| 67 | const void *iter = NULL; |
||
| 68 | struct vpx_image *img; |
||
| 69 | int ret; |
||
| 70 | |||
| 71 | if (vpx_codec_decode(&ctx->decoder, avpkt->data, avpkt->size, NULL, 0) != |
||
| 72 | VPX_CODEC_OK) { |
||
| 73 | const char *error = vpx_codec_error(&ctx->decoder); |
||
| 74 | const char *detail = vpx_codec_error_detail(&ctx->decoder); |
||
| 75 | |||
| 76 | av_log(avctx, AV_LOG_ERROR, "Failed to decode frame: %s\n", error); |
||
| 77 | if (detail) |
||
| 78 | av_log(avctx, AV_LOG_ERROR, " Additional information: %s\n", |
||
| 79 | detail); |
||
| 80 | return AVERROR_INVALIDDATA; |
||
| 81 | } |
||
| 82 | |||
| 83 | if ((img = vpx_codec_get_frame(&ctx->decoder, &iter))) { |
||
| 84 | if (img->fmt != VPX_IMG_FMT_I420) { |
||
| 85 | av_log(avctx, AV_LOG_ERROR, "Unsupported output colorspace (%d)\n", |
||
| 86 | img->fmt); |
||
| 87 | return AVERROR_INVALIDDATA; |
||
| 88 | } |
||
| 89 | |||
| 90 | if ((int) img->d_w != avctx->width || (int) img->d_h != avctx->height) { |
||
| 91 | av_log(avctx, AV_LOG_INFO, "dimension change! %dx%d -> %dx%d\n", |
||
| 92 | avctx->width, avctx->height, img->d_w, img->d_h); |
||
| 93 | if (av_image_check_size(img->d_w, img->d_h, 0, avctx)) |
||
| 94 | return AVERROR_INVALIDDATA; |
||
| 95 | avcodec_set_dimensions(avctx, img->d_w, img->d_h); |
||
| 96 | } |
||
| 97 | if ((ret = ff_get_buffer(avctx, picture, 0)) < 0) |
||
| 98 | return ret; |
||
| 99 | av_image_copy(picture->data, picture->linesize, (const uint8_t **)img->planes, |
||
| 100 | img->stride, avctx->pix_fmt, img->d_w, img->d_h); |
||
| 101 | *got_frame = 1; |
||
| 102 | } |
||
| 103 | return avpkt->size; |
||
| 104 | } |
||
| 105 | |||
| 106 | static av_cold int vp8_free(AVCodecContext *avctx) |
||
| 107 | { |
||
| 108 | VP8Context *ctx = avctx->priv_data; |
||
| 109 | vpx_codec_destroy(&ctx->decoder); |
||
| 110 | return 0; |
||
| 111 | } |
||
| 112 | |||
| 113 | #if CONFIG_LIBVPX_VP8_DECODER |
||
| 114 | static av_cold int vp8_init(AVCodecContext *avctx) |
||
| 115 | { |
||
| 116 | return vpx_init(avctx, &vpx_codec_vp8_dx_algo); |
||
| 117 | } |
||
| 118 | |||
| 119 | AVCodec ff_libvpx_vp8_decoder = { |
||
| 120 | .name = "libvpx", |
||
| 121 | .long_name = NULL_IF_CONFIG_SMALL("libvpx VP8"), |
||
| 122 | .type = AVMEDIA_TYPE_VIDEO, |
||
| 123 | .id = AV_CODEC_ID_VP8, |
||
| 124 | .priv_data_size = sizeof(VP8Context), |
||
| 125 | .init = vp8_init, |
||
| 126 | .close = vp8_free, |
||
| 127 | .decode = vp8_decode, |
||
| 128 | .capabilities = CODEC_CAP_AUTO_THREADS | CODEC_CAP_DR1, |
||
| 129 | }; |
||
| 130 | #endif /* CONFIG_LIBVPX_VP8_DECODER */ |
||
| 131 | |||
| 132 | #if CONFIG_LIBVPX_VP9_DECODER |
||
| 133 | static av_cold int vp9_init(AVCodecContext *avctx) |
||
| 134 | { |
||
| 135 | return vpx_init(avctx, &vpx_codec_vp9_dx_algo); |
||
| 136 | } |
||
| 137 | |||
| 138 | AVCodec ff_libvpx_vp9_decoder = { |
||
| 139 | .name = "libvpx-vp9", |
||
| 140 | .long_name = NULL_IF_CONFIG_SMALL("libvpx VP9"), |
||
| 141 | .type = AVMEDIA_TYPE_VIDEO, |
||
| 142 | .id = AV_CODEC_ID_VP9, |
||
| 143 | .priv_data_size = sizeof(VP8Context), |
||
| 144 | .init = vp9_init, |
||
| 145 | .close = vp8_free, |
||
| 146 | .decode = vp8_decode, |
||
| 147 | .capabilities = CODEC_CAP_AUTO_THREADS | CODEC_CAP_EXPERIMENTAL, |
||
| 148 | }; |
||
| 149 | #endif /* CONFIG_LIBVPX_VP9_DECODER */ |