/* * Copyright (c) 2008 BBC, Anuradha Suraparaju <asuraparaju at gmail dot 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 Street, Fifth Floor, Boston, MA 02110-1301 USA */ /** * @file * function definitions common to libschroedinger decoder and encoder */ #include "libavutil/attributes.h" #include "libavutil/mem.h" #include "libschroedinger.h" static const SchroVideoFormatInfo ff_schro_video_format_info[] = { { 640, 480, 24000, 1001}, { 176, 120, 15000, 1001}, { 176, 144, 25, 2 }, { 352, 240, 15000, 1001}, { 352, 288, 25, 2 }, { 704, 480, 15000, 1001}, { 704, 576, 25, 2 }, { 720, 480, 30000, 1001}, { 720, 576, 25, 1 }, { 1280, 720, 60000, 1001}, { 1280, 720, 50, 1 }, { 1920, 1080, 30000, 1001}, { 1920, 1080, 25, 1 }, { 1920, 1080, 60000, 1001}, { 1920, 1080, 50, 1 }, { 2048, 1080, 24, 1 }, { 4096, 2160, 24, 1 }, }; static unsigned int get_video_format_idx(AVCodecContext *avctx) { unsigned int ret_idx = 0; unsigned int idx; unsigned int num_formats = sizeof(ff_schro_video_format_info) / sizeof(ff_schro_video_format_info[0]); for (idx = 1; idx < num_formats; ++idx) { const SchroVideoFormatInfo *vf = &ff_schro_video_format_info[idx]; if (avctx->width == vf->width && avctx->height == vf->height) { ret_idx = idx; if (avctx->time_base.den == vf->frame_rate_num && avctx->time_base.num == vf->frame_rate_denom) return idx; } } return ret_idx; } av_cold void ff_schro_queue_init(FFSchroQueue *queue) { queue->p_head = queue->p_tail = NULL; queue->size = 0; } void ff_schro_queue_free(FFSchroQueue *queue, void (*free_func)(void *)) { while (queue->p_head) free_func(ff_schro_queue_pop(queue)); } int ff_schro_queue_push_back(FFSchroQueue *queue, void *p_data) { FFSchroQueueElement *p_new = av_mallocz(sizeof(FFSchroQueueElement)); if (!p_new) return -1; p_new->data = p_data; if (!queue->p_head) queue->p_head = p_new; else queue->p_tail->next = p_new; queue->p_tail = p_new; ++queue->size; return 0; } void *ff_schro_queue_pop(FFSchroQueue *queue) { FFSchroQueueElement *top = queue->p_head; if (top) { void *data = top->data; queue->p_head = queue->p_head->next; --queue->size; av_freep(&top); return data; } return NULL; } /** * Schroedinger video preset table. Ensure that this tables matches up correctly * with the ff_schro_video_format_info table. */ static const SchroVideoFormatEnum ff_schro_video_formats[]={ SCHRO_VIDEO_FORMAT_CUSTOM , SCHRO_VIDEO_FORMAT_QSIF , SCHRO_VIDEO_FORMAT_QCIF , SCHRO_VIDEO_FORMAT_SIF , SCHRO_VIDEO_FORMAT_CIF , SCHRO_VIDEO_FORMAT_4SIF , SCHRO_VIDEO_FORMAT_4CIF , SCHRO_VIDEO_FORMAT_SD480I_60 , SCHRO_VIDEO_FORMAT_SD576I_50 , SCHRO_VIDEO_FORMAT_HD720P_60 , SCHRO_VIDEO_FORMAT_HD720P_50 , SCHRO_VIDEO_FORMAT_HD1080I_60 , SCHRO_VIDEO_FORMAT_HD1080I_50 , SCHRO_VIDEO_FORMAT_HD1080P_60 , SCHRO_VIDEO_FORMAT_HD1080P_50 , SCHRO_VIDEO_FORMAT_DC2K_24 , SCHRO_VIDEO_FORMAT_DC4K_24 , }; SchroVideoFormatEnum ff_get_schro_video_format_preset(AVCodecContext *avctx) { unsigned int num_formats = sizeof(ff_schro_video_formats) / sizeof(ff_schro_video_formats[0]); unsigned int idx = get_video_format_idx(avctx); return (idx < num_formats) ? ff_schro_video_formats[idx] : SCHRO_VIDEO_FORMAT_CUSTOM; } int ff_get_schro_frame_format (SchroChromaFormat schro_pix_fmt, SchroFrameFormat *schro_frame_fmt) { unsigned int num_formats = sizeof(schro_pixel_format_map) / sizeof(schro_pixel_format_map[0]); int idx; for (idx = 0; idx < num_formats; ++idx) { if (schro_pixel_format_map[idx].schro_pix_fmt == schro_pix_fmt) { *schro_frame_fmt = schro_pixel_format_map[idx].schro_frame_fmt; return 0; } } return -1; } static void free_schro_frame(SchroFrame *frame, void *priv) { AVPicture *p_pic = priv; if (!p_pic) return; avpicture_free(p_pic); av_freep(&p_pic); } SchroFrame *ff_create_schro_frame(AVCodecContext *avctx, SchroFrameFormat schro_frame_fmt) { AVPicture *p_pic; SchroFrame *p_frame; int y_width, uv_width; int y_height, uv_height; int i; y_width = avctx->width; y_height = avctx->height; uv_width = y_width >> (SCHRO_FRAME_FORMAT_H_SHIFT(schro_frame_fmt)); uv_height = y_height >> (SCHRO_FRAME_FORMAT_V_SHIFT(schro_frame_fmt)); p_pic = av_mallocz(sizeof(AVPicture)); if (!p_pic || avpicture_alloc(p_pic, avctx->pix_fmt, y_width, y_height) < 0) { av_free(p_pic); return NULL; } p_frame = schro_frame_new(); p_frame->format = schro_frame_fmt; p_frame->width = y_width; p_frame->height = y_height; schro_frame_set_free_callback(p_frame, free_schro_frame, (void *)p_pic); for (i = 0; i < 3; ++i) { p_frame->components[i].width = i ? uv_width : y_width; p_frame->components[i].stride = p_pic->linesize[i]; p_frame->components[i].height = i ? uv_height : y_height; p_frame->components[i].length = p_frame->components[i].stride * p_frame->components[i].height; p_frame->components[i].data = p_pic->data[i]; if (i) { p_frame->components[i].v_shift = SCHRO_FRAME_FORMAT_V_SHIFT(p_frame->format); p_frame->components[i].h_shift = SCHRO_FRAME_FORMAT_H_SHIFT(p_frame->format); } } return p_frame; }