/*
* Copyright (c) 2006 Paul Richards <paul.richards@gmail.com>
*
- * This file is part of FFmpeg.
+ * This file is part of Libav.
*
- * FFmpeg is free software; you can redistribute it and/or
+ * Libav is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
- * FFmpeg is distributed in the hope that it will be useful,
+ * Libav is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
- * License along with FFmpeg; if not, write to the Free Software
+ * License along with Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
-/*!
- * \file libtheoraenc.c
- * \brief Theora encoder using libtheora.
- *
\author Paul Richards <paul.richards@gmail.com>
+/**
+ * @file
+ * @brief Theora encoder using libtheora.
+ *
@author Paul Richards <paul.richards@gmail.com>
*
* A lot of this is copy / paste from other output codecs in
* libavcodec or pure guesswork (or both).
* and o_ prefixes on variables which are libogg types.
*/
-/* FFmpeg includes */
+/* Libav includes */
#include "libavutil/intreadwrite.h"
#include "libavutil/log.h"
#include "libavutil/base64.h"
#include "avcodec.h"
+#include "internal.h"
/* libtheora includes */
#include <theora/theoraenc.h>
int stats_offset;
int uv_hshift;
int uv_vshift;
+ int keyframe_mask;
} TheoraContext;
-/*!
- Concatenates an ogg_packet into the extradata.
-*/
+/** Concatenate an ogg_packet into the extradata. */
static int concatenate_packet(unsigned int* offset,
AVCodecContext* avc_context,
const ogg_packet* packet)
static int get_stats(AVCodecContext *avctx, int eos)
{
+#ifdef TH_ENCCTL_2PASS_OUT
TheoraContext *h = avctx->priv_data;
uint8_t *buf;
int bytes;
memcpy(h->stats + h->stats_offset, buf, bytes);
h->stats_offset += bytes;
} else {
- int b64_size = ((h->stats_offset + 2) / 3) * 4 + 1;
+ int b64_size = AV_BASE64_SIZE(h->stats_offset);
// libtheora generates a summary header at the end
memcpy(h->stats, buf, bytes);
avctx->stats_out = av_malloc(b64_size);
av_base64_encode(avctx->stats_out, b64_size, h->stats, h->stats_offset);
}
return 0;
+#else
+ av_log(avctx, AV_LOG_ERROR, "libtheora too old to support 2pass\n");
+ return -1;
+#endif
}
// libtheora won't read the entire buffer we give it at once, so we have to
// repeatedly submit it...
static int submit_stats(AVCodecContext *avctx)
{
+#ifdef TH_ENCCTL_2PASS_IN
TheoraContext *h = avctx->priv_data;
int bytes;
if (!h->stats) {
h->stats_offset += bytes;
}
return 0;
+#else
+ av_log(avctx, AV_LOG_ERROR, "libtheora too old to support 2pass\n");
+ return -1;
+#endif
}
static av_cold int encode_init(AVCodecContext* avc_context)
return -1;
}
+ h->keyframe_mask = (1 << t_info.keyframe_granule_shift) - 1;
/* Clear up theora_info struct */
th_info_clear(&t_info);
header, comment, and tables.
Each one is prefixed with a 16bit size, then they
- are concatenated together into ffmpeg's extradata.
+ are concatenated together into libavcodec's extradata.
*/
offset = 0;
return 0;
}
-static int encode_frame(AVCodecContext* avc_context, uint8_t *outbuf,
- int buf_size, void *data)
+static int encode_frame(AVCodecContext* avc_context, AVPacket *pkt,
+ const AVFrame *frame, int *got_packet)
{
th_ycbcr_buffer t_yuv_buffer;
TheoraContext *h = avc_context->priv_data;
- AVFrame *frame = data;
ogg_packet o_packet;
- int result, i;
+ int result, i, ret;
// EOS, finish and get 1st pass stats if applicable
if (!frame) {
}
/* Copy ogg_packet content out to buffer */
- if (buf_size < o_packet.bytes) {
- av_log(avc_context, AV_LOG_ERROR, "encoded frame too large\n");
- return -1;
+ if ((ret = ff_alloc_packet(pkt, o_packet.bytes)) < 0) {
+ av_log(avc_context, AV_LOG_ERROR, "Error getting output packet of size %ld.\n", o_packet.bytes);
+ return ret;
}
- memcpy(outbuf, o_packet.packet, o_packet.bytes);
+ memcpy(pkt->data, o_packet.packet, o_packet.bytes);
- // HACK: does not take codec delay into account (neither does the decoder though)
- avc_context->coded_frame->pts = frame->pts;
+ // HACK: assumes no encoder delay, this is true until libtheora becomes
+ // multithreaded (which will be disabled unless explictly requested)
+ pkt->pts = pkt->dts = frame->pts;
+ avc_context->coded_frame->key_frame = !(o_packet.granulepos & h->keyframe_mask);
+ if (avc_context->coded_frame->key_frame)
+ pkt->flags |= AV_PKT_FLAG_KEY;
+ *got_packet = 1;
- return o_packet.bytes;
+ return 0;
}
static av_cold int encode_close(AVCodecContext* avc_context)
return 0;
}
-/*! AVCodec struct exposed to libavcodec */
-AVCodec libtheora_encoder = {
- .name = "libtheora",
- .type = CODEC_TYPE_VIDEO,
- .id = CODEC_ID_THEORA,
+/** AVCodec struct exposed to libavcodec */
+AVCodec ff_libtheora_encoder = {
+ .name = "libtheora",
+ .type = AVMEDIA_TYPE_VIDEO,
+ .id = CODEC_ID_THEORA,
.priv_data_size = sizeof(TheoraContext),
- .init = encode_init,
- .close = encode_close,
- .encode = encode_frame,
- .capabilities = CODEC_CAP_DELAY, // needed to get the statsfile summary
- .pix_fmts= (const enum PixelFormat[]){PIX_FMT_YUV420P, PIX_FMT_YUV422P, PIX_FMT_YUV444P, PIX_FMT_NONE},
- .long_name = NULL_IF_CONFIG_SMALL("libtheora Theora"),
+ .init = encode_init,
+ .close = encode_close,
+ .encode2 = encode_frame,
+ .capabilities = CODEC_CAP_DELAY, // needed to get the statsfile summary
+ .pix_fmts = (const enum PixelFormat[]){
+ PIX_FMT_YUV420P, PIX_FMT_YUV422P, PIX_FMT_YUV444P, PIX_FMT_NONE
+ },
+ .long_name = NULL_IF_CONFIG_SMALL("libtheora Theora"),
};
projects / ffmpeg / blobdiff