/*
* 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/common.h"
#include "libavutil/intreadwrite.h"
+#include "libavutil/pixdesc.h"
#include "libavutil/log.h"
+#include "libavutil/base64.h"
#include "avcodec.h"
+#include "internal.h"
/* libtheora includes */
-#include <theora/theora.h>
-
-typedef struct TheoraContext{
- theora_state t_state;
+#include <theora/theoraenc.h>
+
+typedef struct TheoraContext {
+ th_enc_ctx *t_state;
+ uint8_t *stats;
+ int stats_size;
+ int stats_offset;
+ int uv_hshift;
+ int uv_vshift;
+ int keyframe_mask;
} TheoraContext;
-/*!
- Concatenates an ogg_packet into the extradata.
-*/
-static int concatenate_packet(unsigned int* offset, AVCodecContext* avc_context, const ogg_packet* packet)
+/** Concatenate an ogg_packet into the extradata. */
+static int concatenate_packet(unsigned int* offset,
+ AVCodecContext* avc_context,
+ const ogg_packet* packet)
{
const char* message = NULL;
- uint8_t* newdata = NULL;
int newsize = avc_context->extradata_size + 2 + packet->bytes;
+ int err = AVERROR_INVALIDDATA;
if (packet->bytes < 0) {
message = "ogg_packet has negative size";
} else if (newsize < avc_context->extradata_size) {
message = "extradata_size would overflow";
} else {
- newdata = av_realloc(avc_context->extradata, newsize);
- if (newdata == NULL)
+ if ((err = av_reallocp(&avc_context->extradata, newsize)) < 0) {
+ avc_context->extradata_size = 0;
message = "av_realloc failed";
+ }
}
- if (message != NULL) {
+ if (message) {
av_log(avc_context, AV_LOG_ERROR, "concatenate_packet failed: %s\n", message);
- return -1;
+ return err;
}
- avc_context->extradata = newdata;
avc_context->extradata_size = newsize;
AV_WB16(avc_context->extradata + (*offset), packet->bytes);
*offset += 2;
- memcpy( avc_context->extradata + (*offset), packet->packet, packet->bytes );
+ memcpy(avc_context->extradata + (*offset), packet->packet, packet->bytes);
(*offset) += packet->bytes;
return 0;
}
+static int get_stats(AVCodecContext *avctx, int eos)
+{
+#ifdef TH_ENCCTL_2PASS_OUT
+ TheoraContext *h = avctx->priv_data;
+ uint8_t *buf;
+ int bytes;
+
+ bytes = th_encode_ctl(h->t_state, TH_ENCCTL_2PASS_OUT, &buf, sizeof(buf));
+ if (bytes < 0) {
+ av_log(avctx, AV_LOG_ERROR, "Error getting first pass stats\n");
+ return -1;
+ }
+ if (!eos) {
+ h->stats = av_fast_realloc(h->stats, &h->stats_size,
+ h->stats_offset + bytes);
+ if (!h->stats)
+ return AVERROR(ENOMEM);
+ memcpy(h->stats + h->stats_offset, buf, bytes);
+ h->stats_offset += bytes;
+ } else {
+ 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);
+ if (!avctx->stats_out)
+ return AVERROR(ENOMEM);
+ 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) {
+ if (!avctx->stats_in) {
+ av_log(avctx, AV_LOG_ERROR, "No statsfile for second pass\n");
+ return -1;
+ }
+ h->stats_size = strlen(avctx->stats_in) * 3/4;
+ h->stats = av_malloc(h->stats_size);
+ if (!h->stats)
+ return AVERROR(ENOMEM);
+ h->stats_size = av_base64_decode(h->stats, avctx->stats_in, h->stats_size);
+ }
+ while (h->stats_size - h->stats_offset > 0) {
+ bytes = th_encode_ctl(h->t_state, TH_ENCCTL_2PASS_IN,
+ h->stats + h->stats_offset,
+ h->stats_size - h->stats_offset);
+ if (bytes < 0) {
+ av_log(avctx, AV_LOG_ERROR, "Error submitting stats\n");
+ return -1;
+ }
+ if (!bytes)
+ return 0;
+ 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)
{
- theora_info t_info;
- theora_comment t_comment;
+ th_info t_info;
+ th_comment t_comment;
ogg_packet o_packet;
unsigned int offset;
TheoraContext *h = avc_context->priv_data;
+ uint32_t gop_size = avc_context->gop_size;
/* Set up the theora_info struct */
- theora_info_init( &t_info );
- t_info.width = FFALIGN(avc_context->width, 16);
- t_info.height = FFALIGN(avc_context->height, 16);
- t_info.frame_width = avc_context->width;
- t_info.frame_height = avc_context->height;
- t_info.offset_x = 0;
- t_info.offset_y = avc_context->height & 0xf;
+ th_info_init(&t_info);
+ t_info.frame_width = FFALIGN(avc_context->width, 16);
+ t_info.frame_height = FFALIGN(avc_context->height, 16);
+ t_info.pic_width = avc_context->width;
+ t_info.pic_height = avc_context->height;
+ t_info.pic_x = 0;
+ t_info.pic_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_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;
+ if (avc_context->sample_aspect_ratio.num) {
+ 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_numerator = 1;
t_info.aspect_denominator = 1;
}
- t_info.colorspace = OC_CS_UNSPECIFIED;
- t_info.pixelformat = OC_PF_420;
- 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.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;
+
+ if (avc_context->color_primaries == AVCOL_PRI_BT470M)
+ t_info.colorspace = TH_CS_ITU_REC_470M;
+ else if (avc_context->color_primaries == AVCOL_PRI_BT470BG)
+ t_info.colorspace = TH_CS_ITU_REC_470BG;
+ else
+ t_info.colorspace = TH_CS_UNSPECIFIED;
+
+ if (avc_context->pix_fmt == AV_PIX_FMT_YUV420P)
+ t_info.pixel_fmt = TH_PF_420;
+ else if (avc_context->pix_fmt == AV_PIX_FMT_YUV422P)
+ t_info.pixel_fmt = TH_PF_422;
+ else if (avc_context->pix_fmt == AV_PIX_FMT_YUV444P)
+ t_info.pixel_fmt = TH_PF_444;
+ else {
+ av_log(avc_context, AV_LOG_ERROR, "Unsupported pix_fmt\n");
+ return -1;
+ }
+ av_pix_fmt_get_chroma_sub_sample(avc_context->pix_fmt,
+ &h->uv_hshift, &h->uv_vshift);
if (avc_context->flags & CODEC_FLAG_QSCALE) {
/* to be constant with the libvorbis implementation, clip global_quality to 0 - 10
* 0 <= p <=63
* an int value
*/
- t_info.quality = av_clip(avc_context->global_quality / (float)FF_QP2LAMBDA, 0, 10) * 6.3;
+ t_info.quality = av_clipf(avc_context->global_quality / (float)FF_QP2LAMBDA, 0, 10) * 6.3;
t_info.target_bitrate = 0;
} else {
t_info.target_bitrate = avc_context->bit_rate;
- t_info.quality = 0;
+ t_info.quality = 0;
}
/* Now initialise libtheora */
- if (theora_encode_init( &(h->t_state), &t_info ) != 0) {
+ h->t_state = th_encode_alloc(&t_info);
+ if (!h->t_state) {
av_log(avc_context, AV_LOG_ERROR, "theora_encode_init failed\n");
return -1;
}
+ h->keyframe_mask = (1 << t_info.keyframe_granule_shift) - 1;
/* Clear up theora_info struct */
- theora_info_clear( &t_info );
+ th_info_clear(&t_info);
+
+ if (th_encode_ctl(h->t_state, TH_ENCCTL_SET_KEYFRAME_FREQUENCY_FORCE,
+ &gop_size, sizeof(gop_size))) {
+ av_log(avc_context, AV_LOG_ERROR, "Error setting GOP size\n");
+ return -1;
+ }
+
+ // need to enable 2 pass (via TH_ENCCTL_2PASS_) before encoding headers
+ if (avc_context->flags & CODEC_FLAG_PASS1) {
+ if (get_stats(avc_context, 0))
+ return -1;
+ } else if (avc_context->flags & CODEC_FLAG_PASS2) {
+ if (submit_stats(avc_context))
+ return -1;
+ }
/*
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.
+ are concatenated together into libavcodec's extradata.
*/
offset = 0;
- /* Header */
- theora_encode_header( &(h->t_state), &o_packet );
- if (concatenate_packet( &offset, avc_context, &o_packet ) != 0)
- return -1;
+ /* Headers */
+ th_comment_init(&t_comment);
- /* Comment */
- theora_comment_init( &t_comment );
- theora_encode_comment( &t_comment, &o_packet );
- if (concatenate_packet( &offset, avc_context, &o_packet ) != 0)
- return -1;
- /* Clear up theora_comment struct before we reset the packet */
- theora_comment_clear( &t_comment );
- /* And despite documentation to the contrary, theora_comment_clear
- * does not release the packet */
- ogg_packet_clear(&o_packet);
-
- /* Tables */
- theora_encode_tables( &(h->t_state), &o_packet );
- if (concatenate_packet( &offset, avc_context, &o_packet ) != 0)
- return -1;
+ while (th_encode_flushheader(h->t_state, &t_comment, &o_packet))
+ if (concatenate_packet(&offset, avc_context, &o_packet))
+ return -1;
- /* Set up the output AVFrame */
- avc_context->coded_frame= avcodec_alloc_frame();
+ th_comment_clear(&t_comment);
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)
{
- yuv_buffer t_yuv_buffer;
+ th_ycbcr_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);
+ int result, i, ret;
+
+ // EOS, finish and get 1st pass stats if applicable
+ if (!frame) {
+ th_encode_packetout(h->t_state, 1, &o_packet);
+ if (avc_context->flags & CODEC_FLAG_PASS1)
+ if (get_stats(avc_context, 1))
+ return -1;
+ return 0;
+ }
/* 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;
+ for (i = 0; i < 3; i++) {
+ t_yuv_buffer[i].width = FFALIGN(avc_context->width, 16) >> (i && h->uv_hshift);
+ t_yuv_buffer[i].height = FFALIGN(avc_context->height, 16) >> (i && h->uv_vshift);
+ t_yuv_buffer[i].stride = frame->linesize[i];
+ t_yuv_buffer[i].data = frame->data[i];
}
- t_yuv_buffer.y_width = FFALIGN(avc_context->width, 16);
- t_yuv_buffer.y_height = FFALIGN(avc_context->height, 16);
- 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];
+ if (avc_context->flags & CODEC_FLAG_PASS2)
+ if (submit_stats(avc_context))
+ return -1;
/* Now call into theora_encode_YUVin */
- result = theora_encode_YUVin( &(h->t_state), &t_yuv_buffer );
- if (result != 0) {
+ result = th_encode_ycbcr_in(h->t_state, t_yuv_buffer);
+ if (result) {
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;
+ case -1:
+ message = "differing frame sizes";
+ break;
+ case TH_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;
}
+ if (avc_context->flags & CODEC_FLAG_PASS1)
+ if (get_stats(avc_context, 0))
+ return -1;
+
/* Pick up returned ogg_packet */
- result = theora_encode_packetout( &(h->t_state), 0, &o_packet );
+ result = th_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;
+ 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;
+ 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: assumes no encoder delay, this is true until libtheora becomes
+ // multithreaded (which will be disabled unless explicitly requested)
+ pkt->pts = pkt->dts = frame->pts;
+#if FF_API_CODED_FRAME
+FF_DISABLE_DEPRECATION_WARNINGS
+ avc_context->coded_frame->key_frame = !(o_packet.granulepos & h->keyframe_mask);
+FF_ENABLE_DEPRECATION_WARNINGS
+#endif
+ if (!(o_packet.granulepos & h->keyframe_mask))
+ pkt->flags |= AV_PKT_FLAG_KEY;
+ *got_packet = 1;
- // HACK: does not take codec delay into account (neither does the decoder though)
- avc_context->coded_frame->pts= frame->pts;
-
- return o_packet.bytes;
+ return 0;
}
static av_cold 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) );
- av_freep(&avc_context->coded_frame);
+ th_encode_free(h->t_state);
+ av_freep(&h->stats);
+ av_freep(&avc_context->stats_out);
av_freep(&avc_context->extradata);
avc_context->extradata_size = 0;
- 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;
+ return 0;
}
-static const enum PixelFormat supported_pixel_formats[] = { PIX_FMT_YUV420P, PIX_FMT_NONE };
-
-/*! 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",
+ .long_name = NULL_IF_CONFIG_SMALL("libtheora Theora"),
+ .type = AVMEDIA_TYPE_VIDEO,
+ .id = AV_CODEC_ID_THEORA,
.priv_data_size = sizeof(TheoraContext),
- .init = encode_init,
- .close = encode_close,
- .encode = encode_frame,
- .pix_fmts = supported_pixel_formats,
- .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 AVPixelFormat[]){
+ AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUV444P, AV_PIX_FMT_NONE
+ },
};
projects / ffmpeg / blobdiff