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Diffstat (limited to 'contrib/ffmpeg/libavcodec/libtheoraenc.c')
-rw-r--r--contrib/ffmpeg/libavcodec/libtheoraenc.c280
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diff --git a/contrib/ffmpeg/libavcodec/libtheoraenc.c b/contrib/ffmpeg/libavcodec/libtheoraenc.c
deleted file mode 100644
index 7f531dbee..000000000
--- a/contrib/ffmpeg/libavcodec/libtheoraenc.c
+++ /dev/null
@@ -1,280 +0,0 @@
-/*
- * 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;
- /* Swap numerator and denominator as time_base in AVCodecContext gives the
- * time period between frames, but theora_info needs the framerate. */
- 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,
-};
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