mirror of
https://github.com/mpv-player/mpv
synced 2024-11-18 21:16:10 +01:00
316 lines
8.5 KiB
C
316 lines
8.5 KiB
C
/*
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* stats.c
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* Copyright (C) 1999-2001 Aaron Holtzman <aholtzma@ess.engr.uvic.ca>
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*
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* This file is part of mpeg2dec, a free MPEG-2 video stream decoder.
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*
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* mpeg2dec is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* mpeg2dec 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
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include "config.h"
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#include <stdio.h>
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#include <stdlib.h>
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#include <inttypes.h>
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#include "mpeg2_internal.h"
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static int debug_level = -1;
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/* Determine is debug output is required. */
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/* We could potentially have multiple levels of debug info */
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static int debug_is_on (void)
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{
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char * env_var;
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if (debug_level < 0) {
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env_var = getenv ("MPEG2_DEBUG");
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if (env_var)
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debug_level = 1;
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else
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debug_level = 0;
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}
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return debug_level;
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}
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static void stats_picture (uint8_t * buffer)
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{
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static char * picture_coding_type_str [8] = {
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"Invalid picture type",
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"I-type",
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"P-type",
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"B-type",
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"D (very bad)",
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"Invalid","Invalid","Invalid"
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};
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int picture_coding_type;
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int temporal_reference;
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int vbv_delay;
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temporal_reference = (buffer[0] << 2) | (buffer[1] >> 6);
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picture_coding_type = (buffer [1] >> 3) & 7;
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vbv_delay = ((buffer[1] << 13) | (buffer[2] << 5) |
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(buffer[3] >> 3)) & 0xffff;
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fprintf (stderr, " (picture) %s temporal_reference %d, vbv_delay %d\n",
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picture_coding_type_str [picture_coding_type],
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temporal_reference, vbv_delay);
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}
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static void stats_user_data (uint8_t * buffer)
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{
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fprintf (stderr, " (user_data)\n");
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}
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static void stats_sequence (uint8_t * buffer)
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{
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static char * aspect_ratio_information_str[8] = {
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"Invalid Aspect Ratio",
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"1:1",
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"4:3",
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"16:9",
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"2.21:1",
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"Invalid Aspect Ratio",
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"Invalid Aspect Ratio",
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"Invalid Aspect Ratio"
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};
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static char * frame_rate_str[16] = {
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"Invalid frame_rate_code",
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"23.976", "24", "25" , "29.97",
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"30" , "50", "59.94", "60" ,
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"Invalid frame_rate_code", "Invalid frame_rate_code",
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"Invalid frame_rate_code", "Invalid frame_rate_code",
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"Invalid frame_rate_code", "Invalid frame_rate_code",
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"Invalid frame_rate_code"
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};
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int horizontal_size;
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int vertical_size;
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int aspect_ratio_information;
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int frame_rate_code;
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int bit_rate_value;
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int vbv_buffer_size_value;
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int constrained_parameters_flag;
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int load_intra_quantizer_matrix;
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int load_non_intra_quantizer_matrix;
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vertical_size = (buffer[0] << 16) | (buffer[1] << 8) | buffer[2];
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horizontal_size = vertical_size >> 12;
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vertical_size &= 0xfff;
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aspect_ratio_information = buffer[3] >> 4;
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frame_rate_code = buffer[3] & 15;
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bit_rate_value = (buffer[4] << 10) | (buffer[5] << 2) | (buffer[6] >> 6);
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vbv_buffer_size_value = ((buffer[6] << 5) | (buffer[7] >> 3)) & 0x3ff;
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constrained_parameters_flag = buffer[7] & 4;
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load_intra_quantizer_matrix = buffer[7] & 2;
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if (load_intra_quantizer_matrix)
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buffer += 64;
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load_non_intra_quantizer_matrix = buffer[7] & 1;
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fprintf (stderr, " (seq) %dx%d %s, %s fps, %5.0f kbps, VBV %d kB%s%s%s\n",
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horizontal_size, vertical_size,
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aspect_ratio_information_str [aspect_ratio_information],
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frame_rate_str [frame_rate_code],
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bit_rate_value * 400.0 / 1000.0,
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2 * vbv_buffer_size_value,
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constrained_parameters_flag ? " , CP":"",
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load_intra_quantizer_matrix ? " , Custom Intra Matrix":"",
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load_non_intra_quantizer_matrix ? " , Custom Non-Intra Matrix":"");
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}
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static void stats_sequence_error (uint8_t * buffer)
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{
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fprintf (stderr, " (sequence_error)\n");
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}
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static void stats_sequence_end (uint8_t * buffer)
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{
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fprintf (stderr, " (sequence_end)\n");
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}
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static void stats_group (uint8_t * buffer)
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{
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fprintf (stderr, " (group)%s%s\n",
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(buffer[4] & 0x40) ? " closed_gop" : "",
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(buffer[4] & 0x20) ? " broken_link" : "");
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}
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static void stats_slice (uint8_t code, uint8_t * buffer)
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{
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/* fprintf (stderr, " (slice %d)\n", code); */
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}
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static void stats_sequence_extension (uint8_t * buffer)
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{
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static char * chroma_format_str[4] = {
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"Invalid Chroma Format",
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"4:2:0 Chroma",
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"4:2:2 Chroma",
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"4:4:4 Chroma"
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};
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int progressive_sequence;
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int chroma_format;
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progressive_sequence = (buffer[1] >> 3) & 1;
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chroma_format = (buffer[1] >> 1) & 3;
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fprintf (stderr, " (seq_ext) progressive_sequence %d, %s\n",
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progressive_sequence, chroma_format_str [chroma_format]);
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}
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static void stats_sequence_display_extension (uint8_t * buffer)
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{
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fprintf (stderr, " (sequence_display_extension)\n");
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}
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static void stats_quant_matrix_extension (uint8_t * buffer)
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{
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fprintf (stderr, " (quant_matrix_extension)\n");
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}
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static void stats_copyright_extension (uint8_t * buffer)
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{
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fprintf (stderr, " (copyright_extension)\n");
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}
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static void stats_sequence_scalable_extension (uint8_t * buffer)
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{
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fprintf (stderr, " (sequence_scalable_extension)\n");
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}
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static void stats_picture_display_extension (uint8_t * buffer)
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{
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fprintf (stderr, " (picture_display_extension)\n");
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}
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static void stats_picture_coding_extension (uint8_t * buffer)
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{
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static char * picture_structure_str[4] = {
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"Invalid Picture Structure",
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"Top field",
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"Bottom field",
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"Frame Picture"
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};
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int f_code[2][2];
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int intra_dc_precision;
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int picture_structure;
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int top_field_first;
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int frame_pred_frame_dct;
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int concealment_motion_vectors;
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int q_scale_type;
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int intra_vlc_format;
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int alternate_scan;
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int repeat_first_field;
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int progressive_frame;
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f_code[0][0] = buffer[0] & 15;
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f_code[0][1] = buffer[1] >> 4;
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f_code[1][0] = buffer[1] & 15;
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f_code[1][1] = buffer[2] >> 4;
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intra_dc_precision = (buffer[2] >> 2) & 3;
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picture_structure = buffer[2] & 3;
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top_field_first = buffer[3] >> 7;
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frame_pred_frame_dct = (buffer[3] >> 6) & 1;
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concealment_motion_vectors = (buffer[3] >> 5) & 1;
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q_scale_type = (buffer[3] >> 4) & 1;
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intra_vlc_format = (buffer[3] >> 3) & 1;
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alternate_scan = (buffer[3] >> 2) & 1;
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repeat_first_field = (buffer[3] >> 1) & 1;
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progressive_frame = buffer[4] >> 7;
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fprintf (stderr,
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" (pic_ext) %s\n", picture_structure_str [picture_structure]);
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fprintf (stderr,
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" (pic_ext) forward horizontal f_code % d, forward vertical f_code % d\n",
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f_code[0][0], f_code[0][1]);
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fprintf (stderr,
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" (pic_ext) backward horizontal f_code % d, backward vertical f_code % d\n",
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f_code[1][0], f_code[1][1]);
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fprintf (stderr,
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" (pic_ext) intra_dc_precision %d, top_field_first %d, frame_pred_frame_dct %d\n",
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intra_dc_precision, top_field_first, frame_pred_frame_dct);
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fprintf (stderr,
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" (pic_ext) concealment_motion_vectors %d, q_scale_type %d, intra_vlc_format %d\n",
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concealment_motion_vectors, q_scale_type, intra_vlc_format);
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fprintf (stderr,
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" (pic_ext) alternate_scan %d, repeat_first_field %d, progressive_frame %d\n",
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alternate_scan, repeat_first_field, progressive_frame);
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}
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void stats_header (uint8_t code, uint8_t * buffer)
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{
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if (! (debug_is_on ()))
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return;
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switch (code) {
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case 0x00:
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stats_picture (buffer);
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break;
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case 0xb2:
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stats_user_data (buffer);
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break;
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case 0xb3:
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stats_sequence (buffer);
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break;
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case 0xb4:
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stats_sequence_error (buffer);
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break;
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case 0xb5:
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switch (buffer[0] >> 4) {
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case 1:
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stats_sequence_extension (buffer);
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break;
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case 2:
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stats_sequence_display_extension (buffer);
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break;
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case 3:
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stats_quant_matrix_extension (buffer);
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break;
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case 4:
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stats_copyright_extension (buffer);
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break;
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case 5:
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stats_sequence_scalable_extension (buffer);
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break;
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case 7:
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stats_picture_display_extension (buffer);
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break;
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case 8:
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stats_picture_coding_extension (buffer);
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break;
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default:
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fprintf (stderr, " (unknown extension %#x)\n", buffer[0] >> 4);
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}
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break;
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case 0xb7:
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stats_sequence_end (buffer);
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break;
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case 0xb8:
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stats_group (buffer);
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break;
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default:
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if (code < 0xb0)
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stats_slice (code, buffer);
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else
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fprintf (stderr, " (unknown start code %#02x)\n", code);
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}
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}
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