[FFmpeg-cvslog] r13046 - in trunk: configure libavcodec/Makefile libavcodec/allcodecs.c libavcodec/libschroedinger.c libavcodec/libschroedinger.h libavcodec/libschroedingerdec.c libavcodec/libschroedingerenc.c
diego
subversion
Sat May 3 15:59:46 CEST 2008
Author: diego
Date: Sat May 3 15:59:45 2008
New Revision: 13046
Log:
Add Dirac support through libschroedinger.
patch by Anuradha Suraparaju, anuradha rd.bbc.co uk
Added:
trunk/libavcodec/libschroedinger.c
trunk/libavcodec/libschroedinger.h
trunk/libavcodec/libschroedingerdec.c
trunk/libavcodec/libschroedingerenc.c
Modified:
trunk/configure
trunk/libavcodec/Makefile
trunk/libavcodec/allcodecs.c
Modified: trunk/configure
==============================================================================
--- trunk/configure (original)
+++ trunk/configure Sat May 3 15:59:45 2008
@@ -98,6 +98,7 @@ show_help(){
echo " --enable-libmp3lame enable MP3 encoding via libmp3lame [default=no]"
echo " --enable-libnut enable NUT (de)muxing via libnut,"
echo " native demuxer exists [default=no]"
+ echo " --enable-libschroedinger enable Dirac support via libschroedinger [default=no]"
echo " --enable-libtheora enable Theora encoding via libtheora [default=no]"
echo " --enable-libvorbis enable Vorbis encoding via libvorbis,"
echo " native implementation exists [default=no]"
@@ -649,6 +650,7 @@ CONFIG_LIST="
libgsm
libmp3lame
libnut
+ libschroedinger
libtheora
libvorbis
libx264
@@ -834,6 +836,8 @@ libgsm_encoder_deps="libgsm"
libgsm_ms_decoder_deps="libgsm"
libgsm_ms_encoder_deps="libgsm"
libmp3lame_encoder_deps="libmp3lame"
+libschroedinger_decoder_deps="libschroedinger"
+libschroedinger_encoder_deps="libschroedinger"
libtheora_encoder_deps="libtheora"
libvorbis_encoder_deps="libvorbis"
libx264_encoder_deps="libx264"
@@ -1637,6 +1641,8 @@ enabled libfaad && require2 libfaad f
enabled libgsm && require libgsm gsm.h gsm_create -lgsm
enabled libmp3lame && require LAME lame/lame.h lame_init -lmp3lame -lm
enabled libnut && require libnut libnut.h nut_demuxer_init -lnut
+enabled libschroedinger && add_cflags $(pkg-config --cflags schroedinger-1.0) \
+ && require libschroedinger schroedinger/schro.h schro_init -lschroedinger-1.0 -lpthread -loil-0.3 -lm -lrt
enabled libtheora && require libtheora theora/theora.h theora_info_init -ltheora -logg
enabled libvorbis && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
enabled libx264 && require x264 x264.h x264_encoder_open -lx264 -lm
@@ -1923,6 +1929,7 @@ echo "libfaad dlopened ${libfaa
echo "libgsm enabled ${libgsm-no}"
echo "libmp3lame enabled ${libmp3lame-no}"
echo "libnut enabled ${libnut-no}"
+echo "libschroedinger enabled ${libschroedinger-no}"
echo "libtheora enabled ${libtheora-no}"
echo "libvorbis enabled ${libvorbis-no}"
echo "x264 enabled ${libx264-no}"
Modified: trunk/libavcodec/Makefile
==============================================================================
--- trunk/libavcodec/Makefile (original)
+++ trunk/libavcodec/Makefile Sat May 3 15:59:45 2008
@@ -325,6 +325,8 @@ OBJS-$(CONFIG_LIBFAAC) +
OBJS-$(CONFIG_LIBFAAD) += libfaad.o
OBJS-$(CONFIG_LIBGSM) += libgsm.o
OBJS-$(CONFIG_LIBMP3LAME) += libmp3lame.o
+OBJS-$(CONFIG_LIBSCHROEDINGER_DECODER) += libschroedingerdec.o libschroedinger.o libdirac_libschro.o
+OBJS-$(CONFIG_LIBSCHROEDINGER_ENCODER) += libschroedingerenc.o libschroedinger.o libdirac_libschro.o
OBJS-$(CONFIG_LIBTHEORA) += libtheoraenc.o
OBJS-$(CONFIG_LIBVORBIS) += libvorbis.o
OBJS-$(CONFIG_LIBX264) += libx264.o
Modified: trunk/libavcodec/allcodecs.c
==============================================================================
--- trunk/libavcodec/allcodecs.c (original)
+++ trunk/libavcodec/allcodecs.c Sat May 3 15:59:45 2008
@@ -283,6 +283,7 @@ void avcodec_register_all(void)
REGISTER_ENCDEC (LIBGSM, libgsm);
REGISTER_ENCDEC (LIBGSM_MS, libgsm_ms);
REGISTER_ENCODER (LIBMP3LAME, libmp3lame);
+ REGISTER_ENCDEC (LIBSCHROEDINGER, libschroedinger);
REGISTER_ENCODER (LIBTHEORA, libtheora);
REGISTER_ENCODER (LIBVORBIS, libvorbis);
REGISTER_ENCODER (LIBX264, libx264);
Added: trunk/libavcodec/libschroedinger.c
==============================================================================
--- (empty file)
+++ trunk/libavcodec/libschroedinger.c Sat May 3 15:59:45 2008
@@ -0,0 +1,80 @@
+/*
+ * Copyright (c) 2008 BBC, Anuradha Suraparaju <asuraparaju at gmail dot 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 Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+/**
+* @file libschroedinger.c
+* function definitions common to libschroedingerdec.c and libschroedingerenc.c
+*/
+
+#include "libdirac_libschro.h"
+#include "libschroedinger.h"
+
+/**
+* Schroedinger video preset table. Ensure that this tables matches up correctly
+* with the ff_dirac_schro_video_format_info table in libdirac_libschro.c.
+*/
+static const SchroVideoFormatEnum ff_schro_video_formats[]={
+ SCHRO_VIDEO_FORMAT_CUSTOM ,
+ SCHRO_VIDEO_FORMAT_QSIF ,
+ SCHRO_VIDEO_FORMAT_QCIF ,
+ SCHRO_VIDEO_FORMAT_SIF ,
+ SCHRO_VIDEO_FORMAT_CIF ,
+ SCHRO_VIDEO_FORMAT_4SIF ,
+ SCHRO_VIDEO_FORMAT_4CIF ,
+ SCHRO_VIDEO_FORMAT_SD480I_60 ,
+ SCHRO_VIDEO_FORMAT_SD576I_50 ,
+ SCHRO_VIDEO_FORMAT_HD720P_60 ,
+ SCHRO_VIDEO_FORMAT_HD720P_50 ,
+ SCHRO_VIDEO_FORMAT_HD1080I_60 ,
+ SCHRO_VIDEO_FORMAT_HD1080I_50 ,
+ SCHRO_VIDEO_FORMAT_HD1080P_60 ,
+ SCHRO_VIDEO_FORMAT_HD1080P_50 ,
+ SCHRO_VIDEO_FORMAT_DC2K_24 ,
+ SCHRO_VIDEO_FORMAT_DC4K_24 ,
+};
+
+SchroVideoFormatEnum ff_get_schro_video_format_preset(AVCodecContext *avccontext)
+{
+ unsigned int num_formats = sizeof(ff_schro_video_formats) /
+ sizeof(ff_schro_video_formats[0]);
+
+ unsigned int idx = ff_dirac_schro_get_video_format_idx (avccontext);
+
+ return (idx < num_formats) ?
+ ff_schro_video_formats[idx] : SCHRO_VIDEO_FORMAT_CUSTOM;
+}
+
+int ff_get_schro_frame_format (SchroChromaFormat schro_pix_fmt,
+ SchroFrameFormat *schro_frame_fmt)
+{
+ unsigned int num_formats = sizeof(ffmpeg_schro_pixel_format_map) /
+ sizeof(ffmpeg_schro_pixel_format_map[0]);
+
+ int idx;
+
+ for (idx = 0; idx < num_formats; ++idx) {
+ if (ffmpeg_schro_pixel_format_map[idx].schro_pix_fmt == schro_pix_fmt) {
+ *schro_frame_fmt =
+ ffmpeg_schro_pixel_format_map[idx].schro_frame_fmt;
+ return 0;
+ }
+ }
+ return -1;
+}
Added: trunk/libavcodec/libschroedinger.h
==============================================================================
--- (empty file)
+++ trunk/libavcodec/libschroedinger.h Sat May 3 15:59:45 2008
@@ -0,0 +1,61 @@
+/*
+ * Copyright (c) 2008 BBC, Anuradha Suraparaju <asuraparaju at gmail dot 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 Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+/**
+* @file libschroedinger.h
+* data structures common to libschroedingerdec.c and libschroedingerenc.c
+*/
+
+#ifndef FFMPEG_LIBSCHROEDINGER_H
+#define FFMPEG_LIBSCHROEDINGER_H
+
+#include "config.h"
+
+#ifdef CONFIG_LIBSCHROEDINGER
+
+#include <schroedinger/schrobitstream.h>
+#include <schroedinger/schroframe.h>
+#include "avcodec.h"
+
+static const struct {
+ enum PixelFormat ff_pix_fmt;
+ SchroChromaFormat schro_pix_fmt;
+ SchroFrameFormat schro_frame_fmt;
+} ffmpeg_schro_pixel_format_map[] = {
+ { PIX_FMT_YUV420P, SCHRO_CHROMA_420, SCHRO_FRAME_FORMAT_U8_420 },
+ { PIX_FMT_YUV422P, SCHRO_CHROMA_422, SCHRO_FRAME_FORMAT_U8_422 },
+ { PIX_FMT_YUV444P, SCHRO_CHROMA_444, SCHRO_FRAME_FORMAT_U8_444 },
+};
+
+/**
+* Returns the video format preset matching the input video dimensions and
+* time base.
+*/
+SchroVideoFormatEnum ff_get_schro_video_format_preset (AVCodecContext *avccontext);
+
+/**
+* Sets the Schroedinger frame format corresponding to the Schro chroma format
+* passed. Returns 0 on success, -1 on failure.
+*/
+int ff_get_schro_frame_format (SchroChromaFormat schro_chroma_fmt,
+ SchroFrameFormat *schro_frame_fmt);
+
+#endif /* CONFIG_LIBSCHROEDINGER */
+#endif /* FFMPEG_LIBSCHROEDINGER_H */
Added: trunk/libavcodec/libschroedingerdec.c
==============================================================================
--- (empty file)
+++ trunk/libavcodec/libschroedingerdec.c Sat May 3 15:59:45 2008
@@ -0,0 +1,310 @@
+/*
+ * Dirac decoder support via Schroedinger libraries
+ * Copyright (c) 2008 BBC, Anuradha Suraparaju <asuraparaju at gmail dot 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 Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+/**
+* @file libschroedingerdec.c
+* Dirac decoder support via libschroedinger-1.0 libraries. More details about
+* the Schroedinger project can be found at http://www.diracvideo.org/.
+* The library implements Dirac Specification Version 2.2.
+* (http://dirac.sourceforge.net/specification.html).
+*/
+
+#include "avcodec.h"
+#include "libdirac_libschro.h"
+#include "libschroedinger.h"
+
+#undef NDEBUG
+#include <assert.h>
+
+
+#include <schroedinger/schro.h>
+#include <schroedinger/schrodebug.h>
+#include <schroedinger/schrovideoformat.h>
+
+/** libschroedinger decoder private data */
+typedef struct FfmpegSchroDecoderParams
+{
+ /** Schroedinger video format */
+ SchroVideoFormat *format;
+
+ /** Schroedinger frame format */
+ SchroFrameFormat frame_format;
+
+ /** decoder handle */
+ SchroDecoder* decoder;
+
+ /** queue storing decoded frames */
+ FfmpegDiracSchroQueue dec_frame_queue;
+
+ /** end of sequence signalled */
+ int eos_signalled;
+
+ /** end of sequence pulled */
+ int eos_pulled;
+
+ /** decoded picture */
+ AVPicture dec_pic;
+} FfmpegSchroDecoderParams;
+
+/**
+* Returns FFmpeg chroma format.
+*/
+static enum PixelFormat GetFfmpegChromaFormat(SchroChromaFormat schro_pix_fmt)
+{
+ int num_formats = sizeof(ffmpeg_schro_pixel_format_map) /
+ sizeof(ffmpeg_schro_pixel_format_map[0]);
+ int idx;
+
+ for (idx = 0; idx < num_formats; ++idx) {
+ if (ffmpeg_schro_pixel_format_map[idx].schro_pix_fmt == schro_pix_fmt) {
+ return ffmpeg_schro_pixel_format_map[idx].ff_pix_fmt;
+ }
+ }
+ return PIX_FMT_NONE;
+}
+
+/*-------------------------DECODER------------------------------------------*/
+
+static int libschroedinger_decode_init(AVCodecContext *avccontext)
+{
+
+ FfmpegSchroDecoderParams *p_schro_params = avccontext->priv_data ;
+ /* First of all, initialize our supporting libraries. */
+ schro_init();
+
+ schro_debug_set_level(avccontext->debug);
+ p_schro_params->decoder = schro_decoder_new();
+ schro_decoder_set_skip_ratio(p_schro_params->decoder, 1);
+
+ if (!p_schro_params->decoder)
+ return -1;
+
+ /* Initialize the decoded frame queue. */
+ ff_dirac_schro_queue_init (&p_schro_params->dec_frame_queue);
+ return 0 ;
+}
+
+static void libschroedinger_decode_buffer_free (SchroBuffer *schro_buf,
+ void *priv)
+{
+ av_freep(&priv);
+}
+
+static void libschroedinger_decode_frame_free (void *frame)
+{
+ schro_frame_unref(frame);
+}
+
+static void libschroedinger_handle_first_access_unit(AVCodecContext *avccontext)
+{
+ FfmpegSchroDecoderParams *p_schro_params = avccontext->priv_data;
+ SchroDecoder *decoder = p_schro_params->decoder;
+
+ p_schro_params->format = schro_decoder_get_video_format (decoder);
+
+ /* Tell FFmpeg about sequence details. */
+ if(avcodec_check_dimensions(avccontext, p_schro_params->format->width,
+ p_schro_params->format->height) < 0) {
+ av_log(avccontext, AV_LOG_ERROR, "invalid dimensions (%dx%d)\n",
+ p_schro_params->format->width, p_schro_params->format->height);
+ avccontext->height = avccontext->width = 0;
+ return -1;
+ }
+ avccontext->height = p_schro_params->format->height;
+ avccontext->width = p_schro_params->format->width;
+ avccontext->pix_fmt =
+ GetFfmpegChromaFormat(p_schro_params->format->chroma_format);
+
+ if (ff_get_schro_frame_format( p_schro_params->format->chroma_format,
+ &p_schro_params->frame_format) == -1) {
+ av_log (avccontext, AV_LOG_ERROR,
+ "This codec currently only supports planar YUV 4:2:0, 4:2:2 "
+ "and 4:4:4 formats.\n");
+ return -1;
+ }
+
+ avccontext->time_base.den = p_schro_params->format->frame_rate_numerator;
+ avccontext->time_base.num = p_schro_params->format->frame_rate_denominator;
+
+ if (p_schro_params->dec_pic.data[0] == NULL)
+ {
+ avpicture_alloc(&p_schro_params->dec_pic,
+ avccontext->pix_fmt,
+ avccontext->width,
+ avccontext->height);
+ }
+}
+
+static int libschroedinger_decode_frame(AVCodecContext *avccontext,
+ void *data, int *data_size,
+ const uint8_t *buf, int buf_size)
+{
+
+ FfmpegSchroDecoderParams *p_schro_params = avccontext->priv_data;
+ SchroDecoder *decoder = p_schro_params->decoder;
+ SchroVideoFormat *format;
+ AVPicture *picture = data;
+ SchroBuffer *enc_buf;
+ SchroFrame* frame;
+ int state;
+ int go = 1;
+
+ *data_size = 0;
+
+ if (buf_size>0) {
+ unsigned char *in_buf = av_malloc(buf_size);
+ memcpy (in_buf, buf, buf_size);
+ enc_buf = schro_buffer_new_with_data (in_buf, buf_size);
+ enc_buf->free = libschroedinger_decode_buffer_free;
+ enc_buf->priv = in_buf;
+ /* Push buffer into decoder. */
+ state = schro_decoder_push (decoder, enc_buf);
+ if (state == SCHRO_DECODER_FIRST_ACCESS_UNIT)
+ libschroedinger_handle_first_access_unit(avccontext);
+ } else {
+ if (!p_schro_params->eos_signalled) {
+ state = schro_decoder_push_end_of_stream(decoder);
+ p_schro_params->eos_signalled = 1;
+ }
+ }
+
+ format = p_schro_params->format;
+
+ while (go) {
+ /* Parse data and process result. */
+ state = schro_decoder_wait (decoder);
+ switch (state)
+ {
+ case SCHRO_DECODER_FIRST_ACCESS_UNIT:
+ libschroedinger_handle_first_access_unit (avccontext);
+ break;
+
+ case SCHRO_DECODER_NEED_BITS:
+ /* Need more input data - stop iterating over what we have. */
+ go = 0;
+ break;
+
+ case SCHRO_DECODER_NEED_FRAME:
+ /* Decoder needs a frame - create one and push it in. */
+
+ frame = schro_frame_new_and_alloc(NULL,
+ p_schro_params->frame_format,
+ format->width,
+ format->height);
+ schro_decoder_add_output_picture (decoder, frame);
+ break;
+
+ case SCHRO_DECODER_OK:
+ /* Pull a frame out of the decoder. */
+ frame = schro_decoder_pull (decoder);
+
+ if (frame) {
+ ff_dirac_schro_queue_push_back(
+ &p_schro_params->dec_frame_queue,
+ frame);
+ }
+ break;
+ case SCHRO_DECODER_EOS:
+ go = 0;
+ p_schro_params->eos_pulled = 1;
+ schro_decoder_reset (decoder);
+ break;
+
+ case SCHRO_DECODER_ERROR:
+ return -1;
+ break;
+ }
+ }
+
+ /* Grab next frame to be returned from the top of the queue. */
+ frame = ff_dirac_schro_queue_pop(&p_schro_params->dec_frame_queue);
+
+ if (frame != NULL) {
+ memcpy (p_schro_params->dec_pic.data[0],
+ frame->components[0].data,
+ frame->components[0].length);
+
+ memcpy (p_schro_params->dec_pic.data[1],
+ frame->components[1].data,
+ frame->components[1].length);
+
+ memcpy (p_schro_params->dec_pic.data[2],
+ frame->components[2].data,
+ frame->components[2].length);
+
+ /* Fill picture with current buffer data from Schroedinger. */
+ avpicture_fill(picture, p_schro_params->dec_pic.data[0],
+ avccontext->pix_fmt,
+ avccontext->width, avccontext->height);
+
+ *data_size = sizeof(AVPicture);
+
+ /* Now free the frame resources. */
+ libschroedinger_decode_frame_free (frame);
+ }
+ return buf_size;
+}
+
+
+static int libschroedinger_decode_close(AVCodecContext *avccontext)
+{
+ FfmpegSchroDecoderParams *p_schro_params = avccontext->priv_data;
+ /* Free the decoder. */
+ schro_decoder_free (p_schro_params->decoder);
+ av_freep(&p_schro_params->format);
+
+ avpicture_free (&p_schro_params->dec_pic);
+
+ /* Free data in the output frame queue. */
+ ff_dirac_schro_queue_free (&p_schro_params->dec_frame_queue,
+ libschroedinger_decode_frame_free);
+
+ return 0 ;
+}
+
+static void libschroedinger_flush (AVCodecContext *avccontext)
+{
+ /* Got a seek request. Free the decoded frames queue and then reset
+ * the decoder */
+ FfmpegSchroDecoderParams *p_schro_params = avccontext->priv_data;
+
+ /* Free data in the output frame queue. */
+ ff_dirac_schro_queue_free (&p_schro_params->dec_frame_queue,
+ libschroedinger_decode_frame_free);
+
+ ff_dirac_schro_queue_init (&p_schro_params->dec_frame_queue);
+ schro_decoder_reset(p_schro_params->decoder);
+ p_schro_params->eos_pulled = 0;
+ p_schro_params->eos_signalled = 0;
+}
+
+AVCodec libschroedinger_decoder = {
+ "libschroedinger",
+ CODEC_TYPE_VIDEO,
+ CODEC_ID_DIRAC,
+ sizeof(FfmpegSchroDecoderParams),
+ libschroedinger_decode_init,
+ NULL,
+ libschroedinger_decode_close,
+ libschroedinger_decode_frame,
+ CODEC_CAP_DELAY,
+ .flush = libschroedinger_flush
+};
Added: trunk/libavcodec/libschroedingerenc.c
==============================================================================
--- (empty file)
+++ trunk/libavcodec/libschroedingerenc.c Sat May 3 15:59:45 2008
@@ -0,0 +1,387 @@
+/*
+ * Dirac encoder support via Schroedinger libraries
+ * Copyright (c) 2008 BBC, Anuradha Suraparaju <asuraparaju at gmail dot 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 Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+/**
+* @file libschroedingerenc.c
+* Dirac encoder support via libschroedinger-1.0 libraries. More details about
+* the Schroedinger project can be found at http://www.diracvideo.org/.
+* The library implements Dirac Specification Version 2.2
+* (http://dirac.sourceforge.net/specification.html).
+*/
+
+#undef NDEBUG
+#include <assert.h>
+
+#include <schroedinger/schro.h>
+#include <schroedinger/schrodebug.h>
+#include <schroedinger/schrovideoformat.h>
+
+#include "avcodec.h"
+#include "libdirac_libschro.h"
+#include "libschroedinger.h"
+
+
+/** libschroedinger encoder private data */
+typedef struct FfmpegSchroEncoderParams
+{
+ /** Schroedinger video format */
+ SchroVideoFormat *format;
+
+ /** Schroedinger frame format */
+ SchroFrameFormat frame_format;
+
+ /** frame being encoded */
+ AVFrame picture;
+
+ /** frame size */
+ int frame_size;
+
+ /** Schroedinger encoder handle*/
+ SchroEncoder* encoder;
+
+ /** queue storing encoded frames */
+ FfmpegDiracSchroQueue enc_frame_queue;
+
+ /** end of sequence signalled */
+ int eos_signalled;
+
+ /** end of sequence pulled */
+ int eos_pulled;
+} FfmpegSchroEncoderParams;
+
+/**
+* Works out Schro-compatible chroma format.
+*/
+static int SetSchroChromaFormat(AVCodecContext *avccontext)
+{
+ int num_formats = sizeof(ffmpeg_schro_pixel_format_map) /
+ sizeof(ffmpeg_schro_pixel_format_map[0]);
+ int idx;
+
+ FfmpegSchroEncoderParams* p_schro_params = avccontext->priv_data;
+
+ for (idx = 0; idx < num_formats; ++idx) {
+ if (ffmpeg_schro_pixel_format_map[idx].ff_pix_fmt ==
+ avccontext->pix_fmt) {
+ p_schro_params->format->chroma_format =
+ ffmpeg_schro_pixel_format_map[idx].schro_pix_fmt;
+ return 0;
+ }
+ }
+
+ av_log (avccontext, AV_LOG_ERROR,
+ "This codec currently only supports planar YUV 4:2:0, 4:2:2"
+ " and 4:4:4 formats.\n");
+
+ return -1;
+}
+
+static int libschroedinger_encode_init(AVCodecContext *avccontext)
+{
+ FfmpegSchroEncoderParams* p_schro_params = avccontext->priv_data;
+ SchroVideoFormatEnum preset;
+
+ /* Initialize the libraries that libschroedinger depends on. */
+ schro_init();
+
+ /* Create an encoder object. */
+ p_schro_params->encoder = schro_encoder_new();
+
+ if (!p_schro_params->encoder) {
+ av_log(avccontext, AV_LOG_ERROR,
+ "Unrecoverable Error: schro_encoder_new failed. ");
+ return -1;
+ }
+
+ /* Initialize the format. */
+ preset = ff_get_schro_video_format_preset(avccontext);
+ p_schro_params->format =
+ schro_encoder_get_video_format(p_schro_params->encoder);
+ schro_video_format_set_std_video_format (p_schro_params->format, preset);
+ p_schro_params->format->width = avccontext->width;
+ p_schro_params->format->height = avccontext->height;
+
+ if (SetSchroChromaFormat(avccontext) == -1)
+ return -1;
+
+ if (ff_get_schro_frame_format(p_schro_params->format->chroma_format,
+ &p_schro_params->frame_format) == -1) {
+ av_log (avccontext, AV_LOG_ERROR,
+ "This codec currently supports only planar YUV 4:2:0, 4:2:2"
+ " and 4:4:4 formats.\n");
+ return -1;
+ }
+
+ p_schro_params->format->frame_rate_numerator = avccontext->time_base.den;
+ p_schro_params->format->frame_rate_denominator = avccontext->time_base.num;
+
+ p_schro_params->frame_size = avpicture_get_size(avccontext->pix_fmt,
+ avccontext->width,
+ avccontext->height);
+
+ avccontext->coded_frame = &p_schro_params->picture;
+
+ if (avccontext->gop_size == 0){
+ schro_encoder_setting_set_double (p_schro_params->encoder,
+ "gop_structure",
+ SCHRO_ENCODER_GOP_INTRA_ONLY);
+ }
+ else {
+ schro_encoder_setting_set_double (p_schro_params->encoder,
+ "gop_structure",
+ SCHRO_ENCODER_GOP_BIREF);
+ avccontext->has_b_frames = 1;
+ }
+
+ /* FIXME - Need to handle SCHRO_ENCODER_RATE_CONTROL_LOW_DELAY. */
+ if (avccontext->flags & CODEC_FLAG_QSCALE) {
+ if (avccontext->global_quality == 0) {
+ /* lossless coding */
+ schro_encoder_setting_set_double (p_schro_params->encoder,
+ "rate_control",
+ SCHRO_ENCODER_RATE_CONTROL_LOSSLESS);
+ } else {
+ int noise_threshold;
+ schro_encoder_setting_set_double (p_schro_params->encoder,
+ "rate_control",
+ SCHRO_ENCODER_RATE_CONTROL_CONSTANT_NOISE_THRESHOLD);
+
+ noise_threshold = avccontext->global_quality/FF_QP2LAMBDA;
+ if (noise_threshold > 100)
+ noise_threshold = 100;
+ schro_encoder_setting_set_double (p_schro_params->encoder,
+ "noise_threshold",
+ noise_threshold);
+ }
+ }
+ else {
+ schro_encoder_setting_set_double ( p_schro_params->encoder,
+ "rate_control",
+ SCHRO_ENCODER_RATE_CONTROL_CONSTANT_BITRATE);
+
+ schro_encoder_setting_set_double (p_schro_params->encoder,
+ "bitrate",
+ avccontext->bit_rate);
+
+ }
+
+ if (avccontext->flags & CODEC_FLAG_INTERLACED_ME) {
+ /* All material can be coded as interlaced or progressive
+ irrespective of the type of source material. */
+ schro_encoder_setting_set_double (p_schro_params->encoder,
+ "interlaced_coding", 1);
+ }
+
+ /* FIXME: Signal range hardcoded to 8-bit data until both libschroedinger
+ * and libdirac support other bit-depth data. */
+ schro_video_format_set_std_signal_range(p_schro_params->format,
+ SCHRO_SIGNAL_RANGE_8BIT_VIDEO);
+
+
+ /* Hardcode motion vector precision to quarter pixel. */
+ schro_encoder_setting_set_double (p_schro_params->encoder,
+ "mv_precision", 2);
+
+ /* Set the encoder format. */
+ schro_encoder_set_video_format(p_schro_params->encoder,
+ p_schro_params->format);
+
+ /* Set the debug level. */
+ schro_debug_set_level (avccontext->debug);
+
+ schro_encoder_start (p_schro_params->encoder);
+
+ /* Initialize the encoded frame queue. */
+ ff_dirac_schro_queue_init (&p_schro_params->enc_frame_queue);
+ return 0 ;
+}
+
+static SchroFrame *libschroedinger_frame_from_data (AVCodecContext *avccontext,
+ void *in_data)
+{
+ FfmpegSchroEncoderParams* p_schro_params = avccontext->priv_data;
+ SchroFrame *in_frame;
+ /* Input line size may differ from what the codec supports. Especially
+ * when transcoding from one format to another. So use avpicture_layout
+ * to copy the frame. */
+ in_frame = schro_frame_new_and_alloc (NULL,
+ p_schro_params->frame_format,
+ p_schro_params->format->width,
+ p_schro_params->format->height);
+
+ avpicture_layout ((AVPicture *)in_data, avccontext->pix_fmt,
+ avccontext->width, avccontext->height,
+ in_frame->components[0].data,
+ p_schro_params->frame_size);
+
+ return in_frame;
+}
+
+static void SchroedingerFreeFrame(void *data)
+{
+ FfmpegDiracSchroEncodedFrame *enc_frame = data;
+
+ av_freep (&(enc_frame->p_encbuf));
+ av_free(enc_frame);
+}
+
+static int libschroedinger_encode_frame(AVCodecContext *avccontext,
+ unsigned char *frame,
+ int buf_size, void *data)
+{
+ int enc_size = 0;
+ FfmpegSchroEncoderParams* p_schro_params = avccontext->priv_data;
+ SchroEncoder *encoder = p_schro_params->encoder;
+ struct FfmpegDiracSchroEncodedFrame* p_frame_output = NULL;
+ int go = 1;
+ SchroBuffer *enc_buf;
+ int presentation_frame;
+ int parse_code;
+
+ if(data == NULL) {
+ /* Push end of sequence if not already signalled. */
+ if (!p_schro_params->eos_signalled) {
+ schro_encoder_end_of_stream(encoder);
+ p_schro_params->eos_signalled = 1;
+ }
+ } else {
+ /* Allocate frame data to schro input buffer. */
+ SchroFrame *in_frame = libschroedinger_frame_from_data (avccontext,
+ data);
+ /* Load next frame. */
+ schro_encoder_push_frame(encoder, in_frame);
+ }
+
+ if (p_schro_params->eos_pulled)
+ go = 0;
+
+ /* Now check to see if we have any output from the encoder. */
+ while (go) {
+ SchroStateEnum state;
+ state = schro_encoder_wait(encoder);
+ switch (state)
+ {
+ case SCHRO_STATE_HAVE_BUFFER:
+ case SCHRO_STATE_END_OF_STREAM:
+ enc_buf = schro_encoder_pull (encoder,
+ &presentation_frame);
+ assert (enc_buf->length > 0);
+ assert (enc_buf->length <= buf_size);
+
+ /* Create output frame. */
+ p_frame_output = av_mallocz(sizeof(FfmpegDiracSchroEncodedFrame));
+ /* Set output data. */
+ p_frame_output->size = enc_buf->length;
+ p_frame_output->p_encbuf = av_malloc(enc_buf->length);
+ memcpy(p_frame_output->p_encbuf, enc_buf->data, enc_buf->length);
+
+ parse_code = enc_buf->data[4];
+ if (SCHRO_PARSE_CODE_IS_INTRA(parse_code) &&
+ SCHRO_PARSE_CODE_IS_REFERENCE(parse_code)) {
+ p_frame_output->key_frame = 1;
+ }
+
+ /* Parse the coded frame number from the bitstream. Bytes 14
+ * through 17 represesent the frame number. */
+ if (SCHRO_PARSE_CODE_IS_PICTURE(parse_code))
+ {
+ assert (enc_buf->length >= 17);
+ p_frame_output->frame_num = (enc_buf->data[13] << 24) +
+ (enc_buf->data[14] << 16) +
+ (enc_buf->data[15] << 8) +
+ enc_buf->data[16];
+ }
+
+ ff_dirac_schro_queue_push_back (&p_schro_params->enc_frame_queue,
+ p_frame_output);
+ schro_buffer_unref (enc_buf);
+
+ if (state == SCHRO_STATE_END_OF_STREAM) {
+ p_schro_params->eos_pulled = 1;
+ go = 0;
+ }
+ break;
+
+ case SCHRO_STATE_NEED_FRAME:
+ go = 0;
+ break;
+
+ case SCHRO_STATE_AGAIN:
+ break;
+
+ default:
+ av_log(avccontext, AV_LOG_ERROR, "Unknown Schro Encoder state\n");
+ return -1;
+ }
+ }
+
+ /* Copy 'next' frame in queue. */
+ p_frame_output =
+ ff_dirac_schro_queue_pop (&p_schro_params->enc_frame_queue);
+
+ if (p_frame_output == NULL)
+ return 0;
+
+ memcpy(frame, p_frame_output->p_encbuf, p_frame_output->size);
+ avccontext->coded_frame->key_frame = p_frame_output->key_frame;
+ /* Use the frame number of the encoded frame as the pts. It is OK to
+ * do so since Dirac is a constant frame rate codec. It expects input
+ * to be of constant frame rate. */
+ avccontext->coded_frame->pts = p_frame_output->frame_num;
+ enc_size = p_frame_output->size;
+
+ /* free frame */
+ SchroedingerFreeFrame (p_frame_output);
+
+ return enc_size;
+}
+
+
+static int libschroedinger_encode_close(AVCodecContext *avccontext)
+{
+
+ FfmpegSchroEncoderParams* p_schro_params = avccontext->priv_data;
+
+ /* Close the encoder. */
+ schro_encoder_free(p_schro_params->encoder);
+
+ /* Free data in the output frame queue. */
+ ff_dirac_schro_queue_free (&p_schro_params->enc_frame_queue,
+ SchroedingerFreeFrame);
+
+ /* Free the video format structure. */
+ av_freep(&p_schro_params->format);
+
+ return 0 ;
+}
+
+
+AVCodec libschroedinger_encoder = {
+ "libschroedinger",
+ CODEC_TYPE_VIDEO,
+ CODEC_ID_DIRAC,
+ sizeof(FfmpegSchroEncoderParams),
+ libschroedinger_encode_init,
+ libschroedinger_encode_frame,
+ libschroedinger_encode_close,
+ .capabilities= CODEC_CAP_DELAY,
+ .pix_fmts= (enum PixelFormat[]){PIX_FMT_YUV420P, PIX_FMT_YUV422P, PIX_FMT_YUV444P, -1},
+};
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