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-rw-r--r--libavcodec/libdiracdec.c208
1 files changed, 0 insertions, 208 deletions
diff --git a/libavcodec/libdiracdec.c b/libavcodec/libdiracdec.c
deleted file mode 100644
index cbd29850f3..0000000000
--- a/libavcodec/libdiracdec.c
+++ /dev/null
@@ -1,208 +0,0 @@
-/*
- * Dirac decoder support via libdirac library
- * Copyright (c) 2005 BBC, Andrew Kennedy <dirac at rd dot bbc dot co dot uk>
- * Copyright (c) 2006-2008 BBC, Anuradha Suraparaju <asuraparaju at gmail dot com >
- *
- * This file is part of Libav.
- *
- * 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.
- *
- * 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 Libav; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- */
-
-/**
-* @file
-* Dirac decoder support via libdirac library; more details about the Dirac
-* project can be found at http://dirac.sourceforge.net/.
-* The libdirac_decoder library implements Dirac specification version 2.2
-* (http://dirac.sourceforge.net/specification.html).
-*/
-
-#include "libavutil/imgutils.h"
-#include "libdirac.h"
-
-#undef NDEBUG
-#include <assert.h>
-
-#include <libdirac_decoder/dirac_parser.h>
-
-/** contains a single frame returned from Dirac */
-typedef struct DiracDecoderParams {
- /** decoder handle */
- dirac_decoder_t* p_decoder;
-
- /** buffer to hold decoded frame */
- unsigned char* p_out_frame_buf;
-} DiracDecoderParams;
-
-
-/**
-* returns Libav chroma format
-*/
-static enum PixelFormat get_chroma_format(dirac_chroma_t dirac_pix_fmt)
-{
- int num_formats = sizeof(dirac_pixel_format_map) /
- sizeof(dirac_pixel_format_map[0]);
- int idx;
-
- for (idx = 0; idx < num_formats; ++idx)
- if (dirac_pixel_format_map[idx].dirac_pix_fmt == dirac_pix_fmt)
- return dirac_pixel_format_map[idx].ff_pix_fmt;
- return PIX_FMT_NONE;
-}
-
-static av_cold int libdirac_decode_init(AVCodecContext *avccontext)
-{
-
- DiracDecoderParams *p_dirac_params = avccontext->priv_data;
- p_dirac_params->p_decoder = dirac_decoder_init(avccontext->debug);
-
- if (!p_dirac_params->p_decoder)
- return -1;
-
- return 0;
-}
-
-static int libdirac_decode_frame(AVCodecContext *avccontext,
- void *data, int *data_size,
- AVPacket *avpkt)
-{
- const uint8_t *buf = avpkt->data;
- int buf_size = avpkt->size;
-
- DiracDecoderParams *p_dirac_params = avccontext->priv_data;
- AVPicture *picture = data;
- AVPicture pic;
- int pict_size;
- unsigned char *buffer[3];
-
- *data_size = 0;
-
- if (buf_size > 0) {
- /* set data to decode into buffer */
- dirac_buffer(p_dirac_params->p_decoder, buf, buf + buf_size);
- if ((buf[4] & 0x08) == 0x08 && (buf[4] & 0x03))
- avccontext->has_b_frames = 1;
- }
- while (1) {
- /* parse data and process result */
- DecoderState state = dirac_parse(p_dirac_params->p_decoder);
- switch (state) {
- case STATE_BUFFER:
- return buf_size;
-
- case STATE_SEQUENCE:
- {
- /* tell Libav about sequence details */
- dirac_sourceparams_t *src_params = &p_dirac_params->p_decoder->src_params;
-
- if (av_image_check_size(src_params->width, src_params->height,
- 0, avccontext) < 0) {
- av_log(avccontext, AV_LOG_ERROR, "Invalid dimensions (%dx%d)\n",
- src_params->width, src_params->height);
- avccontext->height = avccontext->width = 0;
- return -1;
- }
-
- avccontext->height = src_params->height;
- avccontext->width = src_params->width;
-
- avccontext->pix_fmt = get_chroma_format(src_params->chroma);
- if (avccontext->pix_fmt == PIX_FMT_NONE) {
- av_log(avccontext, AV_LOG_ERROR,
- "Dirac chroma format %d not supported currently\n",
- src_params->chroma);
- return -1;
- }
-
- avccontext->time_base.den = src_params->frame_rate.numerator;
- avccontext->time_base.num = src_params->frame_rate.denominator;
-
- /* calculate output dimensions */
- avpicture_fill(&pic, NULL, avccontext->pix_fmt,
- avccontext->width, avccontext->height);
-
- pict_size = avpicture_get_size(avccontext->pix_fmt,
- avccontext->width,
- avccontext->height);
-
- /* allocate output buffer */
- if (!p_dirac_params->p_out_frame_buf)
- p_dirac_params->p_out_frame_buf = av_malloc(pict_size);
- buffer[0] = p_dirac_params->p_out_frame_buf;
- buffer[1] = p_dirac_params->p_out_frame_buf +
- pic.linesize[0] * avccontext->height;
- buffer[2] = buffer[1] +
- pic.linesize[1] * src_params->chroma_height;
-
- /* tell Dirac about output destination */
- dirac_set_buf(p_dirac_params->p_decoder, buffer, NULL);
- break;
- }
- case STATE_SEQUENCE_END:
- break;
-
- case STATE_PICTURE_AVAIL:
- /* fill picture with current buffer data from Dirac */
- avpicture_fill(picture, p_dirac_params->p_out_frame_buf,
- avccontext->pix_fmt,
- avccontext->width, avccontext->height);
- *data_size = sizeof(AVPicture);
- return buf_size;
-
- case STATE_INVALID:
- return -1;
-
- default:
- break;
- }
- }
-
- return buf_size;
-}
-
-
-static av_cold int libdirac_decode_close(AVCodecContext *avccontext)
-{
- DiracDecoderParams *p_dirac_params = avccontext->priv_data;
- dirac_decoder_close(p_dirac_params->p_decoder);
-
- av_freep(&p_dirac_params->p_out_frame_buf);
-
- return 0;
-}
-
-static void libdirac_flush(AVCodecContext *avccontext)
-{
- /* Got a seek request. We will need free memory held in the private
- * context and free the current Dirac decoder handle and then open
- * a new decoder handle. */
- libdirac_decode_close(avccontext);
- libdirac_decode_init(avccontext);
- return;
-}
-
-
-
-AVCodec ff_libdirac_decoder = {
- .name = "libdirac",
- .type = AVMEDIA_TYPE_VIDEO,
- .id = CODEC_ID_DIRAC,
- .priv_data_size = sizeof(DiracDecoderParams),
- .init = libdirac_decode_init,
- .close = libdirac_decode_close,
- .decode = libdirac_decode_frame,
- .capabilities = CODEC_CAP_DELAY,
- .flush = libdirac_flush,
- .long_name = NULL_IF_CONFIG_SMALL("libdirac Dirac 2.2"),
-};
generated by cgit v1.2.3 (git 2.39.1) at 2024-07-01 04:21:36 +0000