220 lines
6.4 KiB
C
220 lines
6.4 KiB
C
/*
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* Copyright (c) 2008 BBC, Anuradha Suraparaju <asuraparaju at gmail dot com >
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*
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* This file is part of Libav.
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*
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* Libav is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* Libav is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with Libav; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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/**
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* @file
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* function definitions common to libschroedinger decoder and encoder
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*/
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#include "libavutil/attributes.h"
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#include "libavutil/mem.h"
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#include "libschroedinger.h"
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static const SchroVideoFormatInfo ff_schro_video_format_info[] = {
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{ 640, 480, 24000, 1001},
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{ 176, 120, 15000, 1001},
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{ 176, 144, 25, 2 },
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{ 352, 240, 15000, 1001},
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{ 352, 288, 25, 2 },
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{ 704, 480, 15000, 1001},
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{ 704, 576, 25, 2 },
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{ 720, 480, 30000, 1001},
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{ 720, 576, 25, 1 },
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{ 1280, 720, 60000, 1001},
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{ 1280, 720, 50, 1 },
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{ 1920, 1080, 30000, 1001},
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{ 1920, 1080, 25, 1 },
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{ 1920, 1080, 60000, 1001},
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{ 1920, 1080, 50, 1 },
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{ 2048, 1080, 24, 1 },
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{ 4096, 2160, 24, 1 },
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};
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static unsigned int get_video_format_idx(AVCodecContext *avctx)
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{
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unsigned int ret_idx = 0;
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unsigned int idx;
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unsigned int num_formats = sizeof(ff_schro_video_format_info) /
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sizeof(ff_schro_video_format_info[0]);
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for (idx = 1; idx < num_formats; ++idx) {
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const SchroVideoFormatInfo *vf = &ff_schro_video_format_info[idx];
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if (avctx->width == vf->width &&
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avctx->height == vf->height) {
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ret_idx = idx;
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if (avctx->time_base.den == vf->frame_rate_num &&
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avctx->time_base.num == vf->frame_rate_denom)
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return idx;
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}
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}
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return ret_idx;
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}
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av_cold void ff_schro_queue_init(FFSchroQueue *queue)
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{
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queue->p_head = queue->p_tail = NULL;
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queue->size = 0;
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}
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void ff_schro_queue_free(FFSchroQueue *queue, void (*free_func)(void *))
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{
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while (queue->p_head)
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free_func(ff_schro_queue_pop(queue));
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}
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int ff_schro_queue_push_back(FFSchroQueue *queue, void *p_data)
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{
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FFSchroQueueElement *p_new = av_mallocz(sizeof(FFSchroQueueElement));
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if (!p_new)
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return -1;
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p_new->data = p_data;
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if (!queue->p_head)
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queue->p_head = p_new;
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else
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queue->p_tail->next = p_new;
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queue->p_tail = p_new;
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++queue->size;
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return 0;
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}
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void *ff_schro_queue_pop(FFSchroQueue *queue)
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{
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FFSchroQueueElement *top = queue->p_head;
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if (top) {
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void *data = top->data;
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queue->p_head = queue->p_head->next;
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--queue->size;
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av_freep(&top);
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return data;
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}
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return NULL;
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}
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/**
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* Schroedinger video preset table. Ensure that this tables matches up correctly
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* with the ff_schro_video_format_info table.
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*/
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static const SchroVideoFormatEnum ff_schro_video_formats[]={
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SCHRO_VIDEO_FORMAT_CUSTOM ,
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SCHRO_VIDEO_FORMAT_QSIF ,
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SCHRO_VIDEO_FORMAT_QCIF ,
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SCHRO_VIDEO_FORMAT_SIF ,
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SCHRO_VIDEO_FORMAT_CIF ,
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SCHRO_VIDEO_FORMAT_4SIF ,
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SCHRO_VIDEO_FORMAT_4CIF ,
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SCHRO_VIDEO_FORMAT_SD480I_60 ,
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SCHRO_VIDEO_FORMAT_SD576I_50 ,
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SCHRO_VIDEO_FORMAT_HD720P_60 ,
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SCHRO_VIDEO_FORMAT_HD720P_50 ,
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SCHRO_VIDEO_FORMAT_HD1080I_60 ,
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SCHRO_VIDEO_FORMAT_HD1080I_50 ,
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SCHRO_VIDEO_FORMAT_HD1080P_60 ,
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SCHRO_VIDEO_FORMAT_HD1080P_50 ,
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SCHRO_VIDEO_FORMAT_DC2K_24 ,
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SCHRO_VIDEO_FORMAT_DC4K_24 ,
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};
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SchroVideoFormatEnum ff_get_schro_video_format_preset(AVCodecContext *avctx)
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{
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unsigned int num_formats = sizeof(ff_schro_video_formats) /
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sizeof(ff_schro_video_formats[0]);
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unsigned int idx = get_video_format_idx(avctx);
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return (idx < num_formats) ? ff_schro_video_formats[idx] :
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SCHRO_VIDEO_FORMAT_CUSTOM;
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}
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int ff_get_schro_frame_format (SchroChromaFormat schro_pix_fmt,
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SchroFrameFormat *schro_frame_fmt)
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{
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unsigned int num_formats = sizeof(schro_pixel_format_map) /
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sizeof(schro_pixel_format_map[0]);
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int idx;
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for (idx = 0; idx < num_formats; ++idx) {
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if (schro_pixel_format_map[idx].schro_pix_fmt == schro_pix_fmt) {
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*schro_frame_fmt = schro_pixel_format_map[idx].schro_frame_fmt;
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return 0;
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}
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}
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return -1;
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}
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static void free_schro_frame(SchroFrame *frame, void *priv)
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{
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AVPicture *p_pic = priv;
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if (!p_pic)
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return;
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avpicture_free(p_pic);
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av_freep(&p_pic);
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}
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SchroFrame *ff_create_schro_frame(AVCodecContext *avctx,
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SchroFrameFormat schro_frame_fmt)
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{
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AVPicture *p_pic;
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SchroFrame *p_frame;
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int y_width, uv_width;
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int y_height, uv_height;
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int i;
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y_width = avctx->width;
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y_height = avctx->height;
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uv_width = y_width >> (SCHRO_FRAME_FORMAT_H_SHIFT(schro_frame_fmt));
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uv_height = y_height >> (SCHRO_FRAME_FORMAT_V_SHIFT(schro_frame_fmt));
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p_pic = av_mallocz(sizeof(AVPicture));
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avpicture_alloc(p_pic, avctx->pix_fmt, y_width, y_height);
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p_frame = schro_frame_new();
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p_frame->format = schro_frame_fmt;
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p_frame->width = y_width;
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p_frame->height = y_height;
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schro_frame_set_free_callback(p_frame, free_schro_frame, (void *)p_pic);
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for (i = 0; i < 3; ++i) {
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p_frame->components[i].width = i ? uv_width : y_width;
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p_frame->components[i].stride = p_pic->linesize[i];
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p_frame->components[i].height = i ? uv_height : y_height;
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p_frame->components[i].length =
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p_frame->components[i].stride * p_frame->components[i].height;
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p_frame->components[i].data = p_pic->data[i];
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if (i) {
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p_frame->components[i].v_shift =
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SCHRO_FRAME_FORMAT_V_SHIFT(p_frame->format);
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p_frame->components[i].h_shift =
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SCHRO_FRAME_FORMAT_H_SHIFT(p_frame->format);
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}
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}
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return p_frame;
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}
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