echo " --enable-mp3lame enable MP3 encoding via libmp3lame [default=no]"
echo " --enable-libnut enable NUT support via libnut [default=no]"
echo " --enable-libogg enable Ogg support via libogg [default=no]"
+ echo " --enable-libtheora enable Theora support via libtheora [default=no]"
echo " --enable-vorbis enable Vorbis support via libvorbis [default=no]"
echo " --enable-x264 enable H.264 encoding via x264 [default=no]"
echo " --enable-xvid enable Xvid encoding via xvidcore [default=no]"
libmp3lame
libnut
libogg
+ libtheora
libvorbis
memalign_hack
mpegaudio_hp
faac_encoder_deps="libfaac"
libgsm_decoder_deps="libgsm"
libgsm_encoder_deps="libgsm"
+libtheora_encoder_deps="libtheora"
mp3lame_encoder_deps="libmp3lame"
oggvorbis_decoder_deps="libvorbis"
oggvorbis_encoder_deps="libvorbis"
libmp3lame="no"
libnut="no"
libogg="no"
+libtheora="no"
libvorbis="no"
xvid="no"
x264="no"
--enable-libogg) libogg="yes"
pkg_requires="$pkg_requires ogg >= 1.1"
;;
+ --enable-libtheora) libtheora="yes"
+ pkg_requires="$pkg_requires theora"
+ ;;
--enable-vorbis) libvorbis="yes"
pkg_requires="$pkg_requires vorbis vorbisenc"
;;
exit 1;
fi
+if test "$libtheora" = "yes" && test "$libogg" = "no"; then
+ die "libogg must be enabled to enable libtheora."
+fi
+
if test "$libvorbis" = "yes" && test "$libogg" = "no"; then
die "libogg must be enabled to enable libvorbis."
fi
enabled libdts && require libdts dts.h dts_init -ldts -lm
enabled libgsm && require libgsm gsm.h gsm_create -lgsm
enabled libmp3lame && require LAME lame/lame.h lame_init -lmp3lame -lm
+enabled libtheora && require libtheora theora/theora.h theora_info_init -ltheora -logg
enabled libvorbis && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbis -lvorbisenc -logg
enabled libogg && require libogg ogg/ogg.h ogg_sync_init -logg
enabled libnut && require libnut libnut.h nut_demuxer_init -lnut
echo "libmp3lame enabled $libmp3lame"
echo "libnut enabled $libnut"
echo "libogg enabled $libogg"
+echo "libtheora enabled $libtheora"
echo "libvorbis enabled $libvorbis"
echo "x264 enabled $x264"
echo "XviD enabled $xvid"
--- /dev/null
+/*
+ * Copyright (c) 2006 Paul Richards <paul.richards@gmail.com>
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg 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,
+ * 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
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+/*!
+ * \file theoraenc.c
+ * \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).
+ *
+ * I have used t_ prefixes on variables which are libtheora types
+ * and o_ prefixes on variables which are libogg types.
+ */
+
+/* FFmpeg includes */
+#include "avcodec.h"
+#include "log.h"
+
+/* libtheora includes */
+#include <theora/theora.h>
+
+typedef struct TheoraContext{
+ theora_state t_state;
+} TheoraContext;
+
+/*!
+ Concatenates an ogg_packet into the extradata.
+*/
+static int concatenate_packet(unsigned int* offset, AVCodecContext* avc_context, const ogg_packet* packet)
+{
+ char* message = NULL;
+ uint8_t* newdata = NULL;
+ int newsize = avc_context->extradata_size + 2 + packet->bytes;
+
+ if (packet->bytes < 0) {
+ message = "ogg_packet has negative size";
+ } else if (packet->bytes > 0xffff) {
+ message = "ogg_packet is larger than 65535 bytes";
+ } else if (newsize < avc_context->extradata_size) {
+ message = "extradata_size would overflow";
+ } else {
+ newdata = av_realloc(avc_context->extradata, newsize);
+ if (newdata == NULL) {
+ message = "av_realloc failed";
+ }
+ }
+ if (message != NULL) {
+ av_log(avc_context, AV_LOG_ERROR, "concatenate_packet failed: %s\n", message);
+ return -1;
+ }
+
+ avc_context->extradata = newdata;
+ avc_context->extradata_size = newsize;
+ avc_context->extradata[ (*offset)++ ] = packet->bytes >> 8;
+ avc_context->extradata[ (*offset)++ ] = packet->bytes & 0xff;
+ memcpy( avc_context->extradata + (*offset), packet->packet, packet->bytes );
+ (*offset) += packet->bytes;
+ return 0;
+}
+
+static int encode_init(AVCodecContext* avc_context)
+{
+ theora_info t_info;
+ theora_comment t_comment;
+ ogg_packet o_packet;
+ unsigned int offset;
+ TheoraContext *h = avc_context->priv_data;
+
+ /* Set up the theora_info struct */
+ theora_info_init( &t_info );
+ t_info.width = avc_context->width;
+ t_info.height = avc_context->height;
+ t_info.frame_width = avc_context->width;
+ t_info.frame_height = avc_context->height;
+ t_info.offset_x = 0;
+ t_info.offset_y = 0;
+ t_info.fps_numerator = avc_context->time_base.den;
+ t_info.fps_denominator = avc_context->time_base.num;
+ if (avc_context->sample_aspect_ratio.num != 0) {
+ t_info.aspect_numerator = avc_context->sample_aspect_ratio.num;
+ t_info.aspect_denominator = avc_context->sample_aspect_ratio.den;
+ } else {
+ t_info.aspect_numerator = 1;
+ t_info.aspect_denominator = 1;
+ }
+ t_info.colorspace = OC_CS_UNSPECIFIED;
+ t_info.pixelformat = OC_PF_420;
+ t_info.target_bitrate = avc_context->bit_rate;
+ t_info.keyframe_frequency = avc_context->gop_size;
+ t_info.keyframe_frequency_force = avc_context->gop_size;
+ t_info.keyframe_mindistance = avc_context->keyint_min;
+ t_info.quality = 0;
+
+ t_info.quick_p = 1;
+ t_info.dropframes_p = 0;
+ t_info.keyframe_auto_p = 1;
+ t_info.keyframe_data_target_bitrate = t_info.target_bitrate * 1.5;
+ t_info.keyframe_auto_threshold = 80;
+ t_info.noise_sensitivity = 1;
+ t_info.sharpness = 0;
+
+ /* Now initialise libtheora */
+ if (theora_encode_init( &(h->t_state), &t_info ) != 0) {
+ av_log(avc_context, AV_LOG_ERROR, "theora_encode_init failed\n");
+ return -1;
+ }
+
+ /* Clear up theora_info struct */
+ theora_info_clear( &t_info );
+
+ /*
+ Output first header packet consisting of theora
+ header, comment, and tables.
+
+ Each one is prefixed with a 16bit size, then they
+ are concatenated together into ffmpeg's extradata.
+ */
+ offset = 0;
+
+ /* Header */
+ theora_encode_header( &(h->t_state), &o_packet );
+ if (concatenate_packet( &offset, avc_context, &o_packet ) != 0) {
+ return -1;
+ }
+
+ /* Comment */
+ theora_comment_init( &t_comment );
+ theora_encode_comment( &t_comment, &o_packet );
+ if (concatenate_packet( &offset, avc_context, &o_packet ) != 0) {
+ return -1;
+ }
+
+ /* Tables */
+ theora_encode_tables( &(h->t_state), &o_packet );
+ if (concatenate_packet( &offset, avc_context, &o_packet ) != 0) {
+ return -1;
+ }
+
+ /* Clear up theora_comment struct */
+ theora_comment_clear( &t_comment );
+
+ /* Set up the output AVFrame */
+ avc_context->coded_frame= avcodec_alloc_frame();
+
+ return 0;
+}
+
+static int encode_frame(
+ AVCodecContext* avc_context,
+ uint8_t *outbuf,
+ int buf_size,
+ void *data)
+{
+ yuv_buffer t_yuv_buffer;
+ TheoraContext *h = avc_context->priv_data;
+ AVFrame *frame = data;
+ ogg_packet o_packet;
+ int result;
+
+ assert(avc_context->pix_fmt == PIX_FMT_YUV420P);
+
+ /* Copy planes to the theora yuv_buffer */
+ if (frame->linesize[1] != frame->linesize[2]) {
+ av_log(avc_context, AV_LOG_ERROR, "U and V stride differ\n");
+ return -1;
+ }
+
+ t_yuv_buffer.y_width = avc_context->width;
+ t_yuv_buffer.y_height = avc_context->height;
+ t_yuv_buffer.y_stride = frame->linesize[0];
+ t_yuv_buffer.uv_width = t_yuv_buffer.y_width / 2;
+ t_yuv_buffer.uv_height = t_yuv_buffer.y_height / 2;
+ t_yuv_buffer.uv_stride = frame->linesize[1];
+
+ t_yuv_buffer.y = frame->data[0];
+ t_yuv_buffer.u = frame->data[1];
+ t_yuv_buffer.v = frame->data[2];
+
+ /* Now call into theora_encode_YUVin */
+ result = theora_encode_YUVin( &(h->t_state), &t_yuv_buffer );
+ if (result != 0) {
+ const char* message;
+ switch (result) {
+ case -1:
+ message = "differing frame sizes";
+ break;
+ case OC_EINVAL:
+ message = "encoder is not ready or is finished";
+ break;
+ default:
+ message = "unknown reason";
+ break;
+ }
+ av_log(avc_context, AV_LOG_ERROR, "theora_encode_YUVin failed (%s) [%d]\n", message, result);
+ return -1;
+ }
+
+ /* Pick up returned ogg_packet */
+ result = theora_encode_packetout( &(h->t_state), 0, &o_packet );
+ switch (result) {
+ case 0:
+ /* No packet is ready */
+ return 0;
+ case 1:
+ /* Success, we have a packet */
+ break;
+ default:
+ av_log(avc_context, AV_LOG_ERROR, "theora_encode_packetout failed [%d]\n", result);
+ return -1;
+ }
+
+ /* 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;
+ }
+ memcpy(outbuf, o_packet.packet, o_packet.bytes);
+
+ return o_packet.bytes;
+}
+
+static int encode_close(AVCodecContext* avc_context)
+{
+ ogg_packet o_packet;
+ TheoraContext *h = avc_context->priv_data;
+ int result;
+ const char* message;
+
+ result = theora_encode_packetout( &(h->t_state), 1, &o_packet );
+ theora_clear( &(h->t_state) );
+ switch (result) {
+ case 0:/* No packet is ready */
+ case -1:/* Encoding finished */
+ return 0;
+ case 1:
+ /* We have a packet */
+ message = "gave us a packet";
+ break;
+ default:
+ message = "unknown reason";
+ break;
+ }
+ av_log(avc_context, AV_LOG_ERROR, "theora_encode_packetout failed (%s) [%d]\n", message, result);
+ return -1;
+}
+
+static const enum PixelFormat supported_pixel_formats[] = { PIX_FMT_YUV420P, -1 };
+
+/*! AVCodec struct exposed to libavcodec */
+AVCodec libtheora_encoder =
+{
+ .name = "libtheora",
+ .type = CODEC_TYPE_VIDEO,
+ .id = CODEC_ID_THEORA,
+ .priv_data_size = sizeof(TheoraContext),
+ .init = encode_init,
+ .close = encode_close,
+ .encode = encode_frame,
+ .pix_fmts = supported_pixel_formats,
+};
projects / ffmpeg / commitdiff