* Dirac encoder support via Schroedinger libraries
* Copyright (c) 2008 BBC, Anuradha Suraparaju <asuraparaju at gmail dot 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 libavcodec/libschroedingerenc.c
+* @file
* 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
#include <schroedinger/schrovideoformat.h>
#include "avcodec.h"
-#include "libdirac_libschro.h"
+#include "internal.h"
#include "libschroedinger.h"
+#include "bytestream.h"
/** libschroedinger encoder private data */
-typedef struct FfmpegSchroEncoderParams
-{
+typedef struct SchroEncoderParams {
/** Schroedinger video format */
SchroVideoFormat *format;
int enc_buf_size;
/** queue storing encoded frames */
- FfmpegDiracSchroQueue enc_frame_queue;
+ FFSchroQueue enc_frame_queue;
/** end of sequence signalled */
int eos_signalled;
/** end of sequence pulled */
int eos_pulled;
-} FfmpegSchroEncoderParams;
+
+ /* counter for frames submitted to encoder, used as dts */
+ int64_t dts;
+} SchroEncoderParams;
/**
* Works out Schro-compatible chroma format.
*/
-static int SetSchroChromaFormat(AVCodecContext *avccontext)
+static int set_chroma_format(AVCodecContext *avccontext)
{
- int num_formats = sizeof(ffmpeg_schro_pixel_format_map) /
- sizeof(ffmpeg_schro_pixel_format_map[0]);
+ int num_formats = sizeof(schro_pixel_format_map) /
+ sizeof(schro_pixel_format_map[0]);
int idx;
- FfmpegSchroEncoderParams* p_schro_params = avccontext->priv_data;
+ SchroEncoderParams *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) {
+ if (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;
+ 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");
+ 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;
+ SchroEncoderParams *p_schro_params = avccontext->priv_data;
SchroVideoFormatEnum preset;
/* Initialize the libraries that libschroedinger depends on. */
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;
+ 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)
+ if (set_chroma_format(avccontext) == -1)
return -1;
+ if (avccontext->color_primaries == AVCOL_PRI_BT709) {
+ p_schro_params->format->colour_primaries = SCHRO_COLOUR_PRIMARY_HDTV;
+ } else if (avccontext->color_primaries == AVCOL_PRI_BT470BG) {
+ p_schro_params->format->colour_primaries = SCHRO_COLOUR_PRIMARY_SDTV_625;
+ } else if (avccontext->color_primaries == AVCOL_PRI_SMPTE170M) {
+ p_schro_params->format->colour_primaries = SCHRO_COLOUR_PRIMARY_SDTV_525;
+ }
+
+ if (avccontext->colorspace == AVCOL_SPC_BT709) {
+ p_schro_params->format->colour_matrix = SCHRO_COLOUR_MATRIX_HDTV;
+ } else if (avccontext->colorspace == AVCOL_SPC_BT470BG) {
+ p_schro_params->format->colour_matrix = SCHRO_COLOUR_MATRIX_SDTV;
+ }
+
+ if (avccontext->color_trc == AVCOL_TRC_BT709) {
+ p_schro_params->format->transfer_function = SCHRO_TRANSFER_CHAR_TV_GAMMA;
+ }
+
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");
+ 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;
}
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);
+ if (!avccontext->gop_size) {
+ schro_encoder_setting_set_double(p_schro_params->encoder,
+ "gop_structure",
+ SCHRO_ENCODER_GOP_INTRA_ONLY);
- if (avccontext->coder_type == FF_CODER_TYPE_VLC) {
- schro_encoder_setting_set_double (p_schro_params->encoder,
- "enable_noarith", 1);
- }
- }
- else {
- schro_encoder_setting_set_double (p_schro_params->encoder,
- "gop_structure",
- SCHRO_ENCODER_GOP_BIREF);
+ if (avccontext->coder_type == FF_CODER_TYPE_VLC)
+ schro_encoder_setting_set_double(p_schro_params->encoder,
+ "enable_noarith", 1);
+ } else {
+ schro_encoder_setting_set_double(p_schro_params->encoder,
+ "au_distance", avccontext->gop_size);
avccontext->has_b_frames = 1;
+ p_schro_params->dts = -1;
}
/* FIXME - Need to handle SCHRO_ENCODER_RATE_CONTROL_LOW_DELAY. */
if (avccontext->flags & CODEC_FLAG_QSCALE) {
- if (avccontext->global_quality == 0) {
+ if (!avccontext->global_quality) {
/* lossless coding */
- schro_encoder_setting_set_double (p_schro_params->encoder,
- "rate_control",
- SCHRO_ENCODER_RATE_CONTROL_LOSSLESS);
+ 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);
+ int quality;
+ schro_encoder_setting_set_double(p_schro_params->encoder,
+ "rate_control",
+ SCHRO_ENCODER_RATE_CONTROL_CONSTANT_QUALITY);
+
+ quality = avccontext->global_quality / FF_QP2LAMBDA;
+ if (quality > 10)
+ quality = 10;
+ schro_encoder_setting_set_double(p_schro_params->encoder,
+ "quality", quality);
}
- }
- else {
- schro_encoder_setting_set_double ( p_schro_params->encoder,
- "rate_control",
- SCHRO_ENCODER_RATE_CONTROL_CONSTANT_BITRATE);
+ } 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);
+ schro_encoder_setting_set_double(p_schro_params->encoder,
+ "bitrate",
+ avccontext->bit_rate);
}
- if (avccontext->flags & CODEC_FLAG_INTERLACED_ME) {
+ 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);
- }
+ schro_encoder_setting_set_double(p_schro_params->encoder,
+ "interlaced_coding", 1);
+
+ schro_encoder_setting_set_double(p_schro_params->encoder, "open_gop",
+ !(avccontext->flags & CODEC_FLAG_CLOSED_GOP));
/* 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_debug_set_level(avccontext->debug);
- schro_encoder_start (p_schro_params->encoder);
+ 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 ;
+ ff_schro_queue_init(&p_schro_params->enc_frame_queue);
+ return 0;
}
-static SchroFrame *libschroedinger_frame_from_data (AVCodecContext *avccontext,
- void *in_data)
+static SchroFrame *libschroedinger_frame_from_data(AVCodecContext *avccontext,
+ const AVFrame *frame)
{
- FfmpegSchroEncoderParams* p_schro_params = avccontext->priv_data;
+ SchroEncoderParams *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);
+ in_frame = ff_create_schro_frame(avccontext, p_schro_params->frame_format);
- avpicture_layout ((AVPicture *)in_data, avccontext->pix_fmt,
- avccontext->width, avccontext->height,
- in_frame->components[0].data,
- p_schro_params->frame_size);
+ if (in_frame)
+ avpicture_layout((const AVPicture *)frame, 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)
+static void libschroedinger_free_frame(void *data)
{
- FfmpegDiracSchroEncodedFrame *enc_frame = data;
+ FFSchroEncodedFrame *enc_frame = data;
- av_freep (&(enc_frame->p_encbuf));
+ 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)
+static int libschroedinger_encode_frame(AVCodecContext *avccontext, AVPacket *pkt,
+ const AVFrame *frame, int *got_packet)
{
int enc_size = 0;
- FfmpegSchroEncoderParams* p_schro_params = avccontext->priv_data;
+ SchroEncoderParams *p_schro_params = avccontext->priv_data;
SchroEncoder *encoder = p_schro_params->encoder;
- struct FfmpegDiracSchroEncodedFrame* p_frame_output = NULL;
+ struct FFSchroEncodedFrame *p_frame_output = NULL;
int go = 1;
SchroBuffer *enc_buf;
int presentation_frame;
int parse_code;
int last_frame_in_sequence = 0;
+ int pkt_size, ret;
- if(data == NULL) {
+ if (!frame) {
/* Push end of sequence if not already signalled. */
if (!p_schro_params->eos_signalled) {
schro_encoder_end_of_stream(encoder);
}
} else {
/* Allocate frame data to schro input buffer. */
- SchroFrame *in_frame = libschroedinger_frame_from_data (avccontext,
- data);
+ SchroFrame *in_frame = libschroedinger_frame_from_data(avccontext,
+ frame);
/* Load next frame. */
schro_encoder_push_frame(encoder, in_frame);
}
/* Now check to see if we have any output from the encoder. */
while (go) {
- SchroStateEnum state;
+ SchroStateEnum state;
state = schro_encoder_wait(encoder);
- switch (state)
- {
+ 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);
+ enc_buf = schro_encoder_pull(encoder, &presentation_frame);
+ assert(enc_buf->length > 0);
+ assert(enc_buf->length <= buf_size);
parse_code = enc_buf->data[4];
/* All non-frame data is prepended to actual frame data to
* be able to set the pts correctly. So we don't write data
* to the frame output queue until we actually have a frame
*/
- p_schro_params->enc_buf = av_realloc (
- p_schro_params->enc_buf,
- p_schro_params->enc_buf_size + enc_buf->length
- );
+ p_schro_params->enc_buf = av_realloc(p_schro_params->enc_buf,
+ p_schro_params->enc_buf_size + enc_buf->length);
- memcpy(p_schro_params->enc_buf+p_schro_params->enc_buf_size,
+ memcpy(p_schro_params->enc_buf + p_schro_params->enc_buf_size,
enc_buf->data, enc_buf->length);
p_schro_params->enc_buf_size += enc_buf->length;
}
if (!SCHRO_PARSE_CODE_IS_PICTURE(parse_code)) {
- schro_buffer_unref (enc_buf);
+ schro_buffer_unref(enc_buf);
break;
}
/* Create output frame. */
- p_frame_output = av_mallocz(sizeof(FfmpegDiracSchroEncodedFrame));
+ p_frame_output = av_mallocz(sizeof(FFSchroEncodedFrame));
/* Set output data. */
p_frame_output->size = p_schro_params->enc_buf_size;
p_frame_output->p_encbuf = p_schro_params->enc_buf;
if (SCHRO_PARSE_CODE_IS_INTRA(parse_code) &&
- SCHRO_PARSE_CODE_IS_REFERENCE(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. */
- p_frame_output->frame_num = (enc_buf->data[13] << 24) +
- (enc_buf->data[14] << 16) +
- (enc_buf->data[15] << 8) +
- enc_buf->data[16];
+ p_frame_output->frame_num = AV_RB32(enc_buf->data + 13);
- ff_dirac_schro_queue_push_back (&p_schro_params->enc_frame_queue,
- p_frame_output);
+ ff_schro_queue_push_back(&p_schro_params->enc_frame_queue,
+ p_frame_output);
p_schro_params->enc_buf_size = 0;
p_schro_params->enc_buf = NULL;
- schro_buffer_unref (enc_buf);
+ schro_buffer_unref(enc_buf);
break;
p_schro_params->eos_pulled)
last_frame_in_sequence = 1;
- p_frame_output =
- ff_dirac_schro_queue_pop (&p_schro_params->enc_frame_queue);
+ p_frame_output = ff_schro_queue_pop(&p_schro_params->enc_frame_queue);
- if (p_frame_output == NULL)
+ if (!p_frame_output)
return 0;
- memcpy(frame, p_frame_output->p_encbuf, p_frame_output->size);
+ pkt_size = p_frame_output->size;
+ if (last_frame_in_sequence && p_schro_params->enc_buf_size > 0)
+ pkt_size += p_schro_params->enc_buf_size;
+ if ((ret = ff_alloc_packet(pkt, pkt_size)) < 0) {
+ av_log(avccontext, AV_LOG_ERROR, "Error getting output packet of size %d.\n", pkt_size);
+ goto error;
+ }
+
+ memcpy(pkt->data, 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. */
+ pkt->pts =
avccontext->coded_frame->pts = p_frame_output->frame_num;
+ pkt->dts = p_schro_params->dts++;
enc_size = p_frame_output->size;
/* Append the end of sequence information to the last frame in the
* sequence. */
- if (last_frame_in_sequence && p_schro_params->enc_buf_size > 0)
- {
- memcpy (frame + enc_size, p_schro_params->enc_buf,
- p_schro_params->enc_buf_size);
+ if (last_frame_in_sequence && p_schro_params->enc_buf_size > 0) {
+ memcpy(pkt->data + enc_size, p_schro_params->enc_buf,
+ p_schro_params->enc_buf_size);
enc_size += p_schro_params->enc_buf_size;
- av_freep (&p_schro_params->enc_buf);
+ av_freep(&p_schro_params->enc_buf);
p_schro_params->enc_buf_size = 0;
}
- /* free frame */
- SchroedingerFreeFrame (p_frame_output);
+ if (p_frame_output->key_frame)
+ pkt->flags |= AV_PKT_FLAG_KEY;
+ *got_packet = 1;
- return enc_size;
+error:
+ /* free frame */
+ libschroedinger_free_frame(p_frame_output);
+ return ret;
}
static int libschroedinger_encode_close(AVCodecContext *avccontext)
{
+ SchroEncoderParams *p_schro_params = avccontext->priv_data;
- FfmpegSchroEncoderParams* p_schro_params = avccontext->priv_data;
-
- /* Close the encoder. */
+ /* 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);
+ ff_schro_queue_free(&p_schro_params->enc_frame_queue,
+ libschroedinger_free_frame);
/* Free the encoder buffer. */
/* Free the video format structure. */
av_freep(&p_schro_params->format);
- return 0 ;
+ 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, PIX_FMT_NONE},
- .long_name= NULL_IF_CONFIG_SMALL("libschroedinger Dirac 2.2"),
+AVCodec ff_libschroedinger_encoder = {
+ .name = "libschroedinger",
+ .type = AVMEDIA_TYPE_VIDEO,
+ .id = AV_CODEC_ID_DIRAC,
+ .priv_data_size = sizeof(SchroEncoderParams),
+ .init = libschroedinger_encode_init,
+ .encode2 = libschroedinger_encode_frame,
+ .close = libschroedinger_encode_close,
+ .capabilities = CODEC_CAP_DELAY,
+ .pix_fmts = (const enum AVPixelFormat[]){
+ AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUV444P, AV_PIX_FMT_NONE
+ },
+ .long_name = NULL_IF_CONFIG_SMALL("libschroedinger Dirac 2.2"),
};
projects / ffmpeg / blobdiff