Lines Matching defs:frame

44 #define MAX_FRAMESIZE       32768                       ///< maximum compressed frame size
55  * @brief frame-specific decoder context for a single channel
62     uint16_t    subframe_offsets[MAX_SUBFRAMES];        ///< subframe positions in the current frame
75     AVFrame         *frame;
77     uint8_t         *frame_data;                    ///< compressed frame data
81     /* frame size dependent frame information (set during initialization) */
83     int             len_prefix;                     ///< frame is prefixed with its length
84     int             dynamic_range_compression;      ///< frame contains DRC data
98     uint8_t         packet_offset;                  ///< offset to the frame in the packet
101     int             frame_offset;                   ///< frame offset in the bit reservoir
106     /* frame decode state */
107     uint32_t        frame_num;                      ///< current frame number (not used for decoding)
253     /* frame info */
254     s->skip_frame  = 1; /* skip first frame */
258     /* get frame len */
283     s->frame = av_frame_alloc();
284     if (!s->frame)
293  * @param offset sample offset in the frame
311         av_log(s->avctx, AV_LOG_ERROR, "broken frame: subframe_len %i\n",
319  * @brief Decode how the data in the frame is split into subframes.
320  *       Every WMA frame contains the encoded data for a fixed number of
332  *       The algorithm repeats these steps until the frame is properly divided
355     /* loop until the frame data is split between the subframes */
390                            "broken frame: num subframes > 31\n");
397                     av_log(s->avctx, AV_LOG_ERROR, "broken frame: "
878     /* check if the frame will be complete after processing the
916         av_frame_unref(s->frame);
1021  * @brief Decode one WMA frame.
1023  * @return 0 if the trailer bit indicates that this is the last frame,
1031     s->frame->nb_samples = s->samples_per_frame;
1032     if ((ret = ff_get_buffer(s->avctx, s->frame, 0)) < 0) {
1033         /* return an error if no frame could be decoded at all */
1035         s->frame->nb_samples = 0;
1039         s->samples_16[i] = (int16_t *)s->frame->extended_data[i];
1040         s->samples_32[i] = (int32_t *)s->frame->extended_data[i];
1043     /* get frame length */
1050         av_frame_unref(s->frame);
1063         /* usually true for the first frame */
1069         /* sometimes true for the last frame */
1073             s->frame->nb_samples -= skip;
1074             if (s->frame->nb_samples <= 0)
1092             if (s->frame->nb_samples)
1093                 s->frame->nb_samples = decoded_samples;
1106                    "frame[%"PRIu32"] would have to skip %i bits\n",
1113         /* skip the rest of the frame data */
1135  * @brief Fill the bit reservoir with a (partial) frame.
1138  * @param len    length of the partial frame
1147     /* when the frame data does not need to be concatenated, the input buffer
1148         is reset and additional bits from the previous frame are copied
1195     s->frame->nb_samples = 0;
1219         /* get number of bits that need to be added to the previous frame */
1239             /* Append the previous frame data to the remaining data from the
1240              * previous packet to create a full frame. */
1243             /* decode the cross packet frame if it is valid */
1277              * part of a new packet belongs to the previous frame therefore we
1279              * frame" data from the next packet so that we get a buffer that
1299     *got_frame_ptr   = s->frame->nb_samples > 0;
1300     av_frame_move_ref(rframe, s->frame);
1316     s->frame->nb_samples = 0;
1324     av_frame_free(&s->frame);