4 * Copyright (c) 2015 Tampere University of Technology
6 * This file is part of FFmpeg.
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.
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.
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
26 #include "libavutil/avassert.h"
27 #include "libavutil/dict.h"
28 #include "libavutil/error.h"
29 #include "libavutil/imgutils.h"
30 #include "libavutil/internal.h"
31 #include "libavutil/pixdesc.h"
32 #include "libavutil/opt.h"
37 typedef struct LibkvazaarContext {
47 static av_cold int libkvazaar_init(AVCodecContext *avctx)
49 LibkvazaarContext *const ctx = avctx->priv_data;
50 const kvz_api *const api = ctx->api = kvz_api_get(8);
51 kvz_config *cfg = NULL;
52 kvz_encoder *enc = NULL;
54 /* Kvazaar requires width and height to be multiples of eight. */
55 if (avctx->width % 8 || avctx->height % 8) {
56 av_log(avctx, AV_LOG_ERROR,
57 "Video dimensions are not a multiple of 8 (%dx%d).\n",
58 avctx->width, avctx->height);
59 return AVERROR(ENOSYS);
62 ctx->config = cfg = api->config_alloc();
64 av_log(avctx, AV_LOG_ERROR,
65 "Could not allocate kvazaar config structure.\n");
66 return AVERROR(ENOMEM);
69 if (!api->config_init(cfg)) {
70 av_log(avctx, AV_LOG_ERROR,
71 "Could not initialize kvazaar config structure.\n");
75 cfg->width = avctx->width;
76 cfg->height = avctx->height;
79 avctx->time_base.den / (double)(avctx->time_base.num * avctx->ticks_per_frame);
80 cfg->target_bitrate = avctx->bit_rate;
81 cfg->vui.sar_width = avctx->sample_aspect_ratio.num;
82 cfg->vui.sar_height = avctx->sample_aspect_ratio.den;
84 if (ctx->kvz_params) {
85 AVDictionary *dict = NULL;
86 if (!av_dict_parse_string(&dict, ctx->kvz_params, "=", ",", 0)) {
87 AVDictionaryEntry *entry = NULL;
88 while ((entry = av_dict_get(dict, "", entry, AV_DICT_IGNORE_SUFFIX))) {
89 if (!api->config_parse(cfg, entry->key, entry->value)) {
90 av_log(avctx, AV_LOG_WARNING, "Invalid option: %s=%s.\n",
91 entry->key, entry->value);
98 ctx->encoder = enc = api->encoder_open(cfg);
100 av_log(avctx, AV_LOG_ERROR, "Could not open kvazaar encoder.\n");
104 if (avctx->flags & AV_CODEC_FLAG_GLOBAL_HEADER) {
105 kvz_data_chunk *data_out = NULL;
106 kvz_data_chunk *chunk = NULL;
110 if (!api->encoder_headers(enc, &data_out, &len_out))
111 return AVERROR(ENOMEM);
113 avctx->extradata = p = av_mallocz(len_out + AV_INPUT_BUFFER_PADDING_SIZE);
115 ctx->api->chunk_free(data_out);
116 return AVERROR(ENOMEM);
119 avctx->extradata_size = len_out;
121 for (chunk = data_out; chunk != NULL; chunk = chunk->next) {
122 memcpy(p, chunk->data, chunk->len);
126 ctx->api->chunk_free(data_out);
132 static av_cold int libkvazaar_close(AVCodecContext *avctx)
134 LibkvazaarContext *ctx = avctx->priv_data;
137 ctx->api->encoder_close(ctx->encoder);
138 ctx->api->config_destroy(ctx->config);
141 if (avctx->extradata)
142 av_freep(&avctx->extradata);
147 static int libkvazaar_encode(AVCodecContext *avctx,
149 const AVFrame *frame,
152 LibkvazaarContext *ctx = avctx->priv_data;
153 kvz_picture *input_pic = NULL;
154 kvz_picture *recon_pic = NULL;
155 kvz_frame_info frame_info;
156 kvz_data_chunk *data_out = NULL;
157 uint32_t len_out = 0;
163 if (frame->width != ctx->config->width ||
164 frame->height != ctx->config->height) {
165 av_log(avctx, AV_LOG_ERROR,
166 "Changing video dimensions during encoding is not supported. "
167 "(changed from %dx%d to %dx%d)\n",
168 ctx->config->width, ctx->config->height,
169 frame->width, frame->height);
170 retval = AVERROR_INVALIDDATA;
174 if (frame->format != avctx->pix_fmt) {
175 av_log(avctx, AV_LOG_ERROR,
176 "Changing pixel format during encoding is not supported. "
177 "(changed from %s to %s)\n",
178 av_get_pix_fmt_name(avctx->pix_fmt),
179 av_get_pix_fmt_name(frame->format));
180 retval = AVERROR_INVALIDDATA;
184 // Allocate input picture for kvazaar.
185 input_pic = ctx->api->picture_alloc(frame->width, frame->height);
187 av_log(avctx, AV_LOG_ERROR, "Failed to allocate picture.\n");
188 retval = AVERROR(ENOMEM);
192 // Copy pixels from frame to input_pic.
194 int dst_linesizes[4] = {
200 av_image_copy(input_pic->data, dst_linesizes,
201 frame->data, frame->linesize,
202 frame->format, frame->width, frame->height);
205 input_pic->pts = frame->pts;
208 retval = ctx->api->encoder_encode(ctx->encoder,
214 av_log(avctx, AV_LOG_ERROR, "Failed to encode frame.\n");
215 retval = AVERROR_INVALIDDATA;
219 retval = 0; /* kvazaar returns 1 on success */
222 kvz_data_chunk *chunk = NULL;
223 uint64_t written = 0;
225 retval = ff_alloc_packet(avpkt, len_out);
227 av_log(avctx, AV_LOG_ERROR, "Failed to allocate output packet.\n");
231 for (chunk = data_out; chunk != NULL; chunk = chunk->next) {
232 av_assert0(written + chunk->len <= len_out);
233 memcpy(avpkt->data + written, chunk->data, chunk->len);
234 written += chunk->len;
237 avpkt->pts = recon_pic->pts;
238 avpkt->dts = recon_pic->dts;
240 // IRAP VCL NAL unit types span the range
241 // [BLA_W_LP (16), RSV_IRAP_VCL23 (23)].
242 if (frame_info.nal_unit_type >= KVZ_NAL_BLA_W_LP &&
243 frame_info.nal_unit_type <= KVZ_NAL_RSV_IRAP_VCL23) {
244 avpkt->flags |= AV_PKT_FLAG_KEY;
251 ctx->api->picture_free(input_pic);
252 ctx->api->picture_free(recon_pic);
253 ctx->api->chunk_free(data_out);
257 static const enum AVPixelFormat pix_fmts[] = {
262 #define OFFSET(x) offsetof(LibkvazaarContext, x)
263 #define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM
264 static const AVOption options[] = {
265 { "kvazaar-params", "Set kvazaar parameters as a comma-separated list of key=value pairs.",
266 OFFSET(kvz_params), AV_OPT_TYPE_STRING, { .str = NULL }, 0, 0, VE },
270 static const AVClass class = {
271 .class_name = "libkvazaar",
272 .item_name = av_default_item_name,
274 .version = LIBAVUTIL_VERSION_INT,
277 static const AVCodecDefault defaults[] = {
282 AVCodec ff_libkvazaar_encoder = {
283 .name = "libkvazaar",
284 .long_name = NULL_IF_CONFIG_SMALL("libkvazaar H.265 / HEVC"),
285 .type = AVMEDIA_TYPE_VIDEO,
286 .id = AV_CODEC_ID_HEVC,
287 .capabilities = AV_CODEC_CAP_DELAY,
288 .pix_fmts = pix_fmts,
290 .priv_class = &class,
291 .priv_data_size = sizeof(LibkvazaarContext),
292 .defaults = defaults,
294 .init = libkvazaar_init,
295 .encode2 = libkvazaar_encode,
296 .close = libkvazaar_close,
298 .caps_internal = FF_CODEC_CAP_INIT_THREADSAFE | FF_CODEC_CAP_INIT_CLEANUP,